阅读说明：本技术 一种基于分区调速的车辆控制方法、装置和计算机设备 (Vehicle control method and device based on zone speed regulation and computer equipment ) 是由 石正发 郭平 朱启昕 王皓 施井才 陆帅 李振雷 张健 王明剑 于 2021-10-09 设计创作，主要内容包括：本申请涉及一种基于分区调速的车辆控制方法、装置、计算机设备和存储介质。所述方法包括：获取分区规则、以及分区限定参数；分区限定参数包括常用油门开度、最大扭矩上限转速、最大扭矩下限转速、以及根据最大扭矩上限转速和最大扭矩下限转速所确定的最大扭矩转速区间；根据分区规则、以及分区限定参数,对发动机的工况总区进行划分,得到多个工况分区；针对各工况分区,分别设置相匹配的调速方案控制发动机转速,以使得车辆在行驶过程中采用与所属工况分区相匹配的调速方案控制车辆的稳定运行；调速方案包括全程调速方案、以及等扭矩调速方案。采用本方法能够提高车辆控制稳定性。(The application relates to a vehicle control method and device based on zone speed regulation, computer equipment and a storage medium. The method comprises the following steps: acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed; dividing a total working condition area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions; aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises a full-range speed regulation scheme and an equal-torque speed regulation scheme. By adopting the method, the control stability of the vehicle can be improved.)

1. A vehicle control method based on zone speed regulation is characterized by comprising the following steps:

acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed;

dividing the working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions;

aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-range speed regulation scheme and an equal-torque speed regulation scheme.

2. The method of claim 1, wherein the partitioning rules comprise a first partitioning rule, a second partitioning rule, a third partitioning rule, and a fourth partitioning rule, wherein:

the first partition rule comprises the steps that when the vehicle is determined to run in a common rotating speed interval and a torsion speed interval, the linear correspondence between the output torque of the engine and the opening degree of an accelerator is ensured, and full load and torque fluctuation are avoided;

the second partition rule comprises the steps that when the accelerator opening is controlled below the common accelerator opening, the rotating speed of an engine is controlled at a preset level in the gear shifting process of the vehicle, so that the drivability of the gear shifting process is improved;

the third partition rule includes ensuring an adaptive increase in engine torque to increase a high end utilization of the vehicle when it is determined that road load is increasing;

the fourth partition rule includes ensuring that the engine adaptively reduces the amount of oil when it is determined that the road load is decreasing to avoid an increase in fuel consumption caused by an increase in engine speed.

3. The method of claim 2, wherein the operating regime zones comprise a fuel-efficient zone, a driving zone, a power zone, and a fuel-limited zone; dividing the total working condition area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions, wherein the method comprises the following steps:

dividing the working condition total area of the engine according to the first partition rule and the partition limiting parameters to obtain an oil saving area with the accelerator opening larger than the common accelerator opening and the engine rotating speed within the maximum torque rotating speed interval;

dividing the working condition total area of the engine according to the second partition rule and the partition limiting parameters to obtain a driving area with the accelerator opening smaller than the common accelerator opening and the engine rotating speed smaller than the maximum torque upper limit rotating speed;

dividing the total working condition area of the engine according to the third partition rule and the partition limiting parameters to obtain a power area with the accelerator opening larger than the common accelerator opening and the engine rotating speed smaller than the maximum torque lower limit rotating speed;

and dividing the working condition total area of the engine according to the fourth partition rule and the partition limiting parameters to obtain an oil limiting area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is larger than the maximum torque lower limit rotating speed.

4. The method according to claim 3, wherein the step of respectively setting a matched speed regulation scheme for each working condition subarea to control the engine speed comprises the following steps:

the constant torque speed regulation scheme is determined by the following formula (1):

T(n,acc)＝δ₁*T_{n_max}*acc；(1)

wherein n is the engine speed, and acc is the accelerator opening; delta₁Is a preset first correction coefficient, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc;

and setting the constant-torque speed regulation scheme as a speed regulation scheme matched with the oil saving area, and ensuring the stable operation of the vehicle when the output torque T (n, acc) of the engine is linearly corresponding to the opening acc of the accelerator.

5. The method according to claim 3, wherein the step of respectively setting a matched speed regulation scheme for each working condition subarea to control the engine speed comprises the following steps:

the first full throttle schedule is determined by equation (2) as follows:

wherein n is_accThe maximum idling speed correspondingly reached by the engine under the accelerator opening acc; delta₂Is a preset second correction coefficient, delta₃Is a preset third correction coefficient; n is_idleAt idle speed, n_pmaxIs a rated rotating speed; t (n, acc) is the engine speed n and the accelerator opening isThe corresponding engine output torque at acc;

and setting the first whole-course speed regulation scheme as a speed regulation scheme matched with a driving area, so that the rising of the rotating speed of the engine and the falling of the rotating speed of the engine are controlled to reach a preset control level in the gear shifting process of the vehicle, and the drivability in the gear shifting process and the stable operation of the vehicle are ensured.

6. The method according to claim 5, wherein the step of respectively setting a matched speed regulation scheme for each working condition subarea to control the engine speed comprises the following steps:

the second full range speed schedule is determined by the following equation:

wherein n is_{e_max}Maximum torque upper limit speed, δ₄Is a preset fourth correction coefficient, delta₅Is a preset fifth correction coefficient, delta₆The correction coefficient is a preset sixth correction coefficient;

and the second whole-course speed regulation scheme is set to be a speed regulation scheme matched with the oil limit area, so that the rotating speed of the engine is controlled when the road load is determined to be reduced in the running process of the vehicle, the oil quantity of the engine is reduced timely, and the stable running of the vehicle is ensured.

7. The method according to claim 3, wherein the step of respectively setting a matched speed regulation scheme for each working condition subarea to control the engine speed comprises the following steps:

the third full throttle schedule is determined by equation (4) as follows:

T(n,acc)＝min(δ₇*(n_{e_min}-n)+T(n_{e_min}，acc),T_{n_max})； (4)

wherein, delta₇The fourth correction coefficient is preset; n is_{e_min}The maximum torque lower limit rotating speed is obtained, and n is the rotating speed of the engine; acc is the throttle opening, T_{n_}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc;

and the third whole-course speed regulation scheme is set to be a speed regulation scheme matched with the power area, so that the rotating speed of the engine is controlled when the road load is determined to be increased in the running process of the vehicle, the speed of the vehicle is delayed to be reduced under the condition that the output torque of the engine is adaptively improved, and the stable running of the vehicle is ensured.

8. The utility model provides a vehicle speed adjusting device based on subregion control, its characterized in that, the device is including obtaining module, subregion module and setting module, wherein:

the acquisition module is used for acquiring the partition rule and the partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed;

the partition module is used for dividing a working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions;

the setting module is used for respectively setting a matched speed regulation scheme for controlling the rotating speed of the engine aiming at each working condition subarea so as to ensure that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable running of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-range speed regulation scheme and an equal-torque speed regulation scheme.

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.

Technical Field

The application relates to the technical field of vehicle control, in particular to a vehicle speed regulation method and device based on zone control and computer equipment.

Background

At present, the commonly used speed regulation characteristics of commercial vehicles are the speed regulation characteristics of the original mechanical pump period, and only the requirements of driving characteristics are met, and the influence of different speed regulation characteristics on power feeling and actual operation oil consumption is not considered. However, the improper speed regulation characteristic easily causes the problems that a driver feels lack of power, the oil consumption is higher, gear shifting is difficult to operate, the vehicle speed is difficult to control and the like. At present, related researchers propose to improve the oil consumption and emission level of an engine based on controlling the engine not to enter a high rotating speed region under an original speed regulation characteristic curve. However, since it limits the maximum idling rotation speed and is not associated with the driving demand of the user, there is a problem that the vehicle control is unstable.

Disclosure of Invention

In view of the above, it is necessary to provide a vehicle speed control method, device and computer equipment based on zone control, which can improve the control stability of the vehicle.

A method of vehicle control based on zone speed regulation, the method comprising:

acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed;

dividing the working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions;

aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-range speed regulation scheme and an equal-torque speed regulation scheme.

A vehicle speed regulation device based on zone control comprises an acquisition module, a zone module and a setting module, wherein:

the acquisition module is used for acquiring the partition rule and the partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed;

the partition module is used for dividing a working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions;

the setting module is used for respectively setting a matched speed regulation scheme for controlling the rotating speed of the engine aiming at each working condition subarea so as to ensure that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable running of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-range speed regulation scheme and an equal-torque speed regulation scheme.

A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed;

dividing the working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions;

aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-range speed regulation scheme and an equal-torque speed regulation scheme.

A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:

acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed;

dividing the working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions;

aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-range speed regulation scheme and an equal-torque speed regulation scheme.

According to the vehicle speed regulation method and device based on the zone control, the computer equipment and the storage medium, the total working condition zone of the engine is divided through the obtained zone rules and the zone limiting parameters, and then a matched speed regulation scheme is set for each zone obtained through division. Therefore, a speed regulation scheme with pertinence can be designed according to the driving requirements of users in different subareas, good driving feeling is guaranteed in the vehicle gear shifting process, and the vehicle control stability is improved. And the vehicle naturally runs in an oil-saving area of the engine, so that the actual use oil consumption of the vehicle is reduced, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the stable running of the vehicle is ensured.

Drawings

FIG. 1 is a diagram of an application environment of a vehicle speed regulation method based on zone control according to an embodiment;

FIG. 2 is a schematic flow chart of a vehicle speed control method based on zone control according to one embodiment;

FIG. 3 is a schematic illustration of the speed governing feature zoning in one embodiment;

FIG. 4 is a block diagram of a vehicle governor device based on zone control according to an embodiment;

FIG. 5 is a diagram illustrating an internal structure of a computer device according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The vehicle speed regulation method based on zone control can be applied to the application environment shown in fig. 1. In the current application scenario, the vehicle 102 is connected to the computer device 104, wherein the computer device 104 obtains the partition rule and the partition defining parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed; the computer device 104 divides the total working condition zone of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions; the computer device 104 sets a speed regulation scheme matched with each working condition zone respectively, and transmits the speed regulation scheme to the vehicle 102, so that the vehicle 102 adopts the speed regulation scheme matched with the working condition zone to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-stroke speed regulation scheme and an equal-torque speed regulation scheme.

Note that the computer device 104 may be a terminal or a server; the terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices, and the server can be implemented by an independent server or a server cluster formed by a plurality of servers.

In another application scenario, the processor may also obtain the partition rule and the partition defining parameter based on a processor provided inside the vehicle, and perform the total operating condition partition of the engine and set the corresponding speed regulation scheme for each operating condition partition based on the partition rule and the partition defining parameter. Of course, the present application is not limited to the above two application scenarios, and may be applied to other application scenarios, and the present application is not limited thereto in the embodiments.

In one embodiment, as shown in fig. 2, a vehicle control method based on zone speed regulation is provided, which is described by taking the method as an example applied to the computer device in fig. 1, and comprises the following steps:

step S202, obtaining a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed.

Specifically, the partitioning rule specifically refers to some limiting conditions that are required to be used for partitioning the working condition area of the engine, for example, unnecessary full load and torque fluctuation during the vehicle running process are avoided; for another example, in a low rotation speed region, when an increase in road load occurs, it is necessary that the vehicle be able to avoid a rapid decrease in vehicle speed and avoid unnecessary downshifts by itself. The divisional definition parameter refers to a definition parameter that corresponds to a reference when dividing a working condition region of the engine, for example, a common throttle opening (i.e., a throttle opening that is controlled by an accelerator pedal, and a gasoline engine controls an amount of fuel injection according to the throttle opening). After the computer equipment acquires the partition rule and the partition limiting parameters, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the working condition total area of the engine is divided.

And S204, dividing the working condition total area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions.

Specifically, the computer device divides the total working condition zone of the engine according to the obtained partition rule and the partition limiting parameter, so as to obtain a plurality of working condition partitions suitable for the partition rule and the partition limiting parameter. The divided working condition zones can be fuel-saving zones which are beneficial to the fuel economy under the steady-state working condition of a driver, for example; for another example, it may be a power zone that is adaptive to a road load increase demand, and of course, in the present embodiment, the power zone is not specifically limited to the above-described zone, and the present embodiment does not limit this.

In one embodiment, the total number of the working condition zones obtained by dividing the computer equipment can be correspondingly and reasonably increased and decreased according to the adjustment of an actual application scene and user requirements, and the design of the speed regulation characteristic is carried out according to the detailed driving requirements of different areas so as to take the driving performance of the vehicle into consideration and improve the control stability of the vehicle.

Step S206, respectively setting a matched speed regulation scheme to control the rotating speed of the engine aiming at each working condition subarea, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises a full-range speed regulation scheme and an equal-torque speed regulation scheme.

Specifically, for each working condition partition, the computer device sets a corresponding matching speed regulation scheme, for example, for the divided oil saving areas, a corresponding matching equal torque speed regulation scheme is set, wherein the equal torque speed regulation scheme includes that when the torque speed regulation slope is 0Nm/(r/min), and the optimal oil saving area under the vehicle state is reached, the engine is accurately controlled to operate in the area according to the road load state, so that the linear correspondence between the output torque of the engine and the opening degree of the accelerator is realized, and the steady-state working condition operation is ensured. For another example, a corresponding and matched full-range speed regulation scheme is set for the power area obtained by division, wherein the full-range speed regulation scheme comprises that when the road load is determined to be increased, the engine is adaptive to the load increase demand, at the moment, the torque output is improved, and the unnecessary gear reduction caused by the untimely refueling of the driver is avoided by delaying the speed reduction.

According to the vehicle control method based on the partition speed regulation, the working condition total area of the engine is divided through the obtained partition rule and the partition limiting parameter, and then a matched speed regulation scheme is set for each partition obtained through division. Therefore, a speed regulation scheme with pertinence can be designed according to the driving requirements of users in different subareas, good driving feeling is guaranteed in the vehicle gear shifting process, and the vehicle control stability is improved. And the vehicle naturally runs in an oil-saving area of the engine, so that the actual use oil consumption of the vehicle is reduced, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the stable running of the vehicle is ensured.

In one embodiment, the partition rules include a first partition rule, a second partition rule, a third partition rule, and a fourth partition rule, wherein: the first partition rule comprises the steps of ensuring the linear correspondence between the output torque of the engine and the opening degree of the accelerator when the vehicle is determined to run in a common rotating speed interval and a torsion speed interval, and avoiding full load and torque fluctuation; the second partition rule comprises the steps that when the accelerator opening is controlled below the common accelerator opening, the rotating speed of an engine is controlled at a preset level in the gear shifting process of the vehicle, so that the drivability in the gear shifting process is improved; the third partition rule includes ensuring an adaptive increase in engine torque to increase a high-end utilization of the vehicle when it is determined that road load is increasing; the fourth partition rule includes ensuring that the engine adaptively reduces the amount of fuel to avoid increased fuel consumption due to increased engine speed when it is determined that the road load is decreasing.

Specifically, the first partition rule may be considered as: in the usual speed and torque intervals of vehicle operation, the driver needs to fully control the vehicle to avoid unnecessary full load and torque fluctuations. The second partitioning rule may be considered as: under the condition of common accelerator opening, a driver is required to accurately control the rotating speed of the engine, and the rotating speed can be rapidly reduced during oil collection so as to realize smooth and rapid gear shifting process. The third partitioning rule may be considered as: in the low speed region, when the road load is increased, the vehicle is required to be capable of avoiding the rapid speed (speed) reduction and avoiding the gear reduction more than necessary. The fourth partition rule may be considered as: the driver needs to avoid high-speed operation as much as possible, and unnecessary fuel waste is avoided.

In the above embodiment, the actual use demand of actual vehicle is combined, the drivability, the oil consumption in use and the power of vehicle are considered, the operating mode total area of the engine is divided, different speed regulation characteristics are set for different areas, the effective control of the driver on the vehicle can be guaranteed, and the stability control on the vehicle is improved.

In one embodiment, the working condition subarea comprises an oil saving area, a driving area, a power area and an oil limiting area; dividing the total working condition area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions, wherein the method comprises the following steps: dividing a working condition total area of the engine according to a first partition rule and partition limiting parameters to obtain an oil saving area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is in a maximum torque rotating speed interval; dividing the working condition total area of the engine according to a second partition rule and partition limiting parameters to obtain a driving area with the accelerator opening smaller than the common accelerator opening and the engine rotating speed smaller than the maximum torque upper limit rotating speed; dividing the total working condition area of the engine according to a third partition rule and partition limiting parameters to obtain a power area with the accelerator opening larger than the common accelerator opening and the engine rotating speed smaller than the maximum torque lower limit rotating speed; and dividing the working condition total area of the engine according to the fourth partition rule and the partition limiting parameters to obtain an oil limiting area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is larger than the maximum torque lower limit rotating speed.

Specifically, according to the first partition rule and the partition limiting parameter, when performing the total partition of the operating conditions, please refer to the area E in fig. 3 (the area is the oil saving area E obtained by partitioning), where the reference rule may be: when the current throttle opening is determined to be larger than the common throttle opening (namely, the current throttle opening is larger than the common throttle opening) and the engine speed is in the maximum torque speed interval, the area is divided into an oil saving area. In fig. 3, the abscissa indicates the engine speed, the ordinate indicates the output torque of the engine, and one coordinate point where the abscissa and the ordinate intersect represents the accelerator opening degree. As shown in fig. 3, each curve in the oil saving area E is relatively smooth, that is, there is a linear correspondence between the output torque of the engine and the accelerator opening in the area, and at this time, the driver can accurately control the engine to operate in the area according to the road load state under the condition of completely controlling the vehicle, for example, when the road load is increased, by increasing the accelerator opening, under the condition of increasing the output torque of the engine, the speed drop is slowed down, and the power feeling of the vehicle is improved.

In one embodiment, it can be further understood, based on fig. 3, that the fuel limit zone (i.e., zone E' illustrated in fig. 3), the power zone (i.e., zone P illustrated in fig. 3), and the driving zone (i.e., zone D illustrated in fig. 3) are divided into zones, and in the manner described above, how to control the stable operation of the vehicle in the case of adjusting the engine speed, for example, in the power zone P, it is necessary to avoid the high-speed operation of the vehicle, avoid unnecessary fuel waste, and delay the vehicle speed reduction in the case of increasing the engine output torque.

In the above embodiment, the area division is performed according to the specific requirements of the user on different engine working condition areas, the drivability, the fuel consumption and the power feeling of the vehicle are considered, and the vehicle stability control is improved.

In one embodiment, the setting of a matched speed regulation scheme for controlling the engine speed for each working condition partition comprises the following steps: the constant torque speed regulation scheme is determined by the following formula (1):

T(n,acc)＝δ₁*T_{n_max}*acc； (1)

wherein n is the engine speed, and acc is the accelerator opening; delta₁Is a preset first correction coefficient, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; the constant-torque speed regulation scheme is set to be matched with the oil saving area, so that the engine can be startedWhen the output torque T (n, acc) is linearly corresponding to the accelerator opening acc, the stable operation of the vehicle is ensured.

In particular, the computer device is known at T_{n_max}And a first correction coefficient delta₁That is, in the case of determining that the two parameters are known quantities, at this time, the engine output torque T (n, acc) is linearly related to the accelerator opening acc, that is, in the case of adjusting to make the accelerator opening acc larger, the engine output torque will be further made larger, wherein the above change rule can be further understood with reference to fig. 3, which is not described in detail in the embodiments of the present application. It should be noted that, under the condition that the torque speed regulation slope is basically 0Nm/(r/min), the corresponding working condition region is the optimal oil saving region in the state of the whole vehicle, and under the region, the driver can completely control the vehicle.

In the embodiment, the linear correspondence between the output torque of the engine and the opening degree of the accelerator is realized, so that the steady-state operation of a driver is facilitated, and the fuel economy is facilitated.

In one embodiment, the setting of a matched speed regulation scheme for controlling the engine speed for each working condition partition comprises the following steps: the first full throttle schedule is determined by equation (2) as follows:

wherein n is_accThe maximum idling speed correspondingly reached by the engine under the accelerator opening acc; delta₂Is a preset second correction coefficient, delta₃Is a preset third correction coefficient; n is_idleAt idle speed, n_pmaxIs a rated rotating speed; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and setting the first whole-course speed regulation scheme as a speed regulation scheme matched with the driving area, so that the rising of the rotating speed of the engine and the falling of the rotating speed of the engine are controlled to reach a preset control level in the gear shifting process of the vehicle, and the drivability in the gear shifting process and the stable operation of the vehicle are ensured.

Specifically, based on the above equation (2), the computer device sets the maximum idling rotation speed n of the engine_acc(i.e., each coordinate point included on the axis of abscissa in FIG. 3), is defined at the rated rotation speed n_pmaxIn (based on FIG. 3, it can be seen that in the current embodiment, n_pmax2300) to avoid vehicle damage caused by excessive idling speed. The idling speed is a speed reached when the engine is idling, and the height of the idling speed can be adjusted by adjusting the size of the throttle and the like. Wherein, when the engine is running, if the accelerator pedal is completely released, the engine is in an idling state. In addition, when the idle speed is adjusted, the rotating speed cannot be suddenly increased or decreased, and early abrasion to the engine can be caused.

In the embodiment, the whole-process speed regulation characteristic is adopted, so that the condition that a driver accurately controls the rising and the falling of the rotating speed of the engine in the gear shifting process of the vehicle is ensured, and the drivability in the gear shifting process is improved.

In one embodiment, the setting of a matched speed regulation scheme for controlling the engine speed for each working condition partition comprises the following steps: the second full range speed schedule is determined by the following equation:

wherein n is_{e_max}Maximum torque upper limit speed, δ₄Is a preset fourth correction coefficient, delta₅Is a preset fifth correction coefficient, delta₆The correction coefficient is a preset sixth correction coefficient; and the second whole-course speed regulation scheme is set to be a speed regulation scheme matched with the oil limit area, so that the rotating speed of the engine is controlled when the road load is determined to be reduced in the running process of the vehicle, the oil quantity of the engine is reduced timely, and the stable running of the vehicle is ensured.

Specifically, the computer equipment adopts a whole-course speed regulation scheme aiming at the working condition subarea above the maximum torque and the rotating speed of the engine, on one hand, when the road load is reduced, the oil quantity is timely reduced, the increase of oil consumption caused by too fast rising of the rotating speed is avoided, and the oil-saving effect is achieved. It should be noted that road load refers to the power required to move the vehicle, and it directly affects the fuel consumption of the vehicle. In one embodiment, road loads include inertial loads, rolling resistance, air resistance, and grade resistance. The inertial load is mainly related to the weight of the vehicle, and the larger the vehicle weight is, the larger the inertial load is. For a given vehicle, the inertial load varies widely under urban road conditions, but on a freeway, the inertial load can be considered to be a constant given the speed of the vehicle in steady operation. It is generally believed that: the most effective way to reduce the inertial load is to reduce the weight of the vehicle. The slope resistance is mainly a component of the gravity along the slope of the slope when the automobile runs on the slope, which represents a resistance to the running of the automobile, and in one embodiment, the road load synchronously changes along with the change of the slope resistance, and mainly represents that: when the encountered gradient resistance is larger, the road load is also increased; however, as the gradient resistance encountered is lower, the road load is also lower. Therefore, in the face of different driving states, a speed regulation scheme with pertinence needs to be designed so as to improve the stability control of the vehicle.

In the embodiment, when the road load is reduced, the engine is controlled to reduce the oil quantity timely so as to avoid the increase of oil consumption caused by too fast increase of the rotating speed, reduce the oil consumption of the vehicle to the maximum extent and reduce the running cost of the vehicle.

In one embodiment, the setting of a matched speed regulation scheme for controlling the engine speed for each working condition partition comprises the following steps: the third full throttle schedule is determined by equation (4) as follows:

T(n,acc)＝min(δ₇*(n_{e_min}-n)+T(n_{e_min},acc),T_{n_max})； (4)

wherein, delta₇The fourth correction coefficient is preset; n is_{e_min}The maximum torque lower limit rotating speed is obtained, and n is the rotating speed of the engine; acc is the throttle opening, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; setting the third whole-course speed regulation scheme as a power zoneThe matched speed regulation scheme ensures that the rotating speed of the engine is controlled when the road load is determined to be increased in the running process of the vehicle, the speed of the vehicle is delayed to be reduced under the condition that the output torque of the engine is adaptively improved, and the stable running of the vehicle is ensured.

Specifically, the computer equipment sets up corresponding whole journey speed governing scheme to the power district that the division obtained for the vehicle is meeting under the condition of road load grow for the engine can adapt to load increase demand and improve torque output, descends through delaying the speed of a motor vehicle, in order to avoid because the driver refuels the unnecessary that leads to in time and subtract the shelves, promotes the power impression of vehicle. In addition, by limiting the engine output torque to T_{n_max}Within to avoid the moment of torsion output too big, cause the influence to acceleration, load capacity, climbing ability, the power size of car, reduce the driving experience and feel.

In the embodiment, the torque output is improved by controlling the engine to adapt to the load increasing demand, the speed of the vehicle is delayed to be reduced, unnecessary gear reduction caused by untimely refueling of a driver is avoided, the power feeling of the vehicle is improved, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the stable running of the vehicle is ensured.

In one embodiment, the vehicle speed regulation method based on zone control disclosed in the embodiments of the present application specifically includes, in an overall aspect, the following steps:

(1) determining that the driver has different requirements for different working condition areas of the engine in the actual running process of the vehicle, wherein the requirements are specifically represented in the following 4 aspects:

(11) in the usual speed and torque range of vehicle operation, the driver needs to control the vehicle completely to avoid unnecessary full load and torque fluctuation.

(12) The driver is required to accurately control the rotating speed of the engine under the common throttle opening degree, and the rotating speed can be rapidly reduced during oil collection so as to realize smooth and rapid gear shifting process.

(13) In the low speed region, when the road load is increased, the vehicle is required to be capable of automatically avoiding the rapid speed (speed) reduction and avoiding unnecessary gear reduction.

(14) The driver needs to avoid high-speed operation as much as possible, and unnecessary fuel waste is avoided.

(2) Based on the different requirements of the different working condition areas, the working condition area of the engine is divided into 4 areas according to the actual use requirement of the actual vehicle (refer to fig. 3 specifically). Wherein, different speed governing characteristics are designed for different regions as follows:

(21) the area below the maximum torque upper limit rotating speed and below the accelerator opening degree of 30% is divided into a driving area D, wherein a full-range speed regulation scheme is adopted in the driving area D, so that a driver can accurately control the rising and falling of the rotating speed of an engine in the gear shifting process of the vehicle, and the drivability in the gear shifting process is improved.

(22) Dividing a region of the engine speed in a maximum torque and speed interval with the accelerator opening of more than 30% into an oil saving region E, wherein an equal torque speed regulation scheme is adopted in the oil saving region E, and the region is characterized in that: the torque speed regulation slope is basically 0Nm/(r/min), the area is the optimal oil saving area under the whole vehicle state, the driver can completely control the vehicle, the engine can be accurately controlled to operate in the area according to the road load state, and the linear correspondence between the output torque of the engine and the opening degree of the accelerator is realized.

(23) The method comprises the steps of dividing an area with the throttle opening being more than 30% and below the maximum torque lower limit rotating speed into a power area P, wherein a whole-process speed regulation scheme is adopted in the power area P, wherein it needs to be explained that when the road load is determined to be increased, the engine adapts to the load increase demand, the speed reduction of the vehicle is delayed by improving the torque output, unnecessary gear reduction caused by untimely refueling of a driver is avoided, and the utilization rate of high gears of the vehicle is improved.

(24) The region above the maximum torque and the rotating speed of the engine is divided into an oil limiting zone E ', wherein a whole-process speed regulation scheme is adopted in the oil limiting zone E', and it needs to be explained that when the road load is reduced, the oil quantity of the engine can be timely reduced, the increase of oil consumption caused by too fast rising of the rotating speed is avoided, and the oil saving effect is achieved.

According to the vehicle speed regulation method, a speed regulation scheme with pertinence is designed according to the requirements of different areas, good driving feeling can be guaranteed in the vehicle gear shifting process, the high gear utilization rate of the vehicle can be improved, good power feeling can be achieved, meanwhile, the vehicle can naturally run in an oil saving area of an engine, and therefore the actual use oil consumption of the vehicle is reduced.

It should be understood that, although the steps in the flowchart of fig. 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 2 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.

In one embodiment, as shown in fig. 4, there is provided a vehicle speed regulation device 400 based on zone control, the device 400 comprising an acquisition module 401, a zone module 402, and a setting module 403, wherein:

an obtaining module 401, configured to obtain a partition rule and a partition defining parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed.

And the partitioning module 402 is configured to partition the total working condition area of the engine according to the partitioning rule and the partitioning limiting parameter to obtain a plurality of working condition partitions.

The setting module 403 is configured to set a matching speed regulation scheme for controlling the engine speed for each working condition zone, so that the vehicle adopts the speed regulation scheme matching with the working condition zone to control the stable operation of the vehicle during the driving process; the speed regulation scheme comprises at least one of a full-stroke speed regulation scheme and an equal-torque speed regulation scheme.

In one embodiment, the partition rules include a first partition rule, a second partition rule, a third partition rule, and a fourth partition rule, wherein: the first partition rule comprises the steps of ensuring the linear correspondence between the output torque of the engine and the opening degree of the accelerator when the vehicle is determined to run in a common rotating speed interval and a torsion speed interval, and avoiding full load and torque fluctuation; the second partition rule comprises the steps that when the accelerator opening is controlled below the common accelerator opening, the rotating speed of an engine is controlled at a preset level in the gear shifting process of the vehicle, so that the drivability in the gear shifting process is improved; the third partition rule includes ensuring an adaptive increase in engine torque to increase a high-end utilization of the vehicle when it is determined that road load is increasing; the fourth partition rule includes ensuring that the engine adaptively reduces the amount of fuel to avoid increased fuel consumption due to increased engine speed when it is determined that the road load is decreasing.

In one embodiment, the working condition subarea comprises an oil saving area, a driving area, a power area and an oil limiting area; the partition module 402 is further configured to partition a total working condition area of the engine according to a first partition rule and partition limiting parameters to obtain an oil saving area in which an accelerator opening is larger than a common accelerator opening and an engine rotation speed is in a maximum torque and rotation speed interval; dividing the working condition total area of the engine according to a second partition rule and partition limiting parameters to obtain a driving area with the accelerator opening smaller than the common accelerator opening and the engine rotating speed smaller than the maximum torque upper limit rotating speed; dividing the total working condition area of the engine according to a third partition rule and partition limiting parameters to obtain a power area with the accelerator opening larger than the common accelerator opening and the engine rotating speed smaller than the maximum torque lower limit rotating speed; and dividing the working condition total area of the engine according to the fourth partition rule and the partition limiting parameters to obtain an oil limiting area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is larger than the maximum torque lower limit rotating speed.

In one embodiment, the module 403 is further configured to determine the iso-torque governing scheme according to the following equation (1):

T(n,acc)＝δ₁*T_{n_max}*acc； (1)

wherein n is the engine speed, and acc is the accelerator opening; delta₁Is a preset first correction coefficient, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; the constant-torque speed regulation scheme is set to be matched with the oil saving area, and when the output torque T (n, acc) of the engine is linearly corresponding to the opening acc of the accelerator, the stable operation of the vehicle is ensured.

In one embodiment, the setting module 403 is further configured to determine the first global throttling schedule according to the following equation (2):

wherein n is_accThe maximum idling speed correspondingly reached by the engine under the accelerator opening acc; delta₂Is a preset second correction coefficient, delta₃Is a preset third correction coefficient; n is_idleAt idle speed, n_pmaxIs a rated rotating speed; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and setting the first whole-course speed regulation scheme as a speed regulation scheme matched with the driving area, so that the rising of the rotating speed of the engine and the falling of the rotating speed of the engine are controlled to reach a preset control level in the gear shifting process of the vehicle, and the drivability in the gear shifting process and the stable operation of the vehicle are ensured.

In one embodiment, the setting module 403 is further configured to determine the second global throttling schedule by the following equation:

wherein n is_{e_max}Maximum torque upper limit speed, δ₄Is a preset fourth correction coefficient, delta₅Is a preset fifth correction coefficient, delta₆Is presetA sixth correction coefficient; and the second whole-course speed regulation scheme is set to be a speed regulation scheme matched with the oil limit area, so that the rotating speed of the engine is controlled when the road load is determined to be reduced in the running process of the vehicle, the oil quantity of the engine is reduced timely, and the stable running of the vehicle is ensured.

In one embodiment, the setting module 403 is further configured to determine a third global throttling schedule according to the following equation (4):

T(n，acc)＝min(δ₇*(n_{e_min}-n)+T(n_{e_min}，acc),T_{n_max})； (4)

wherein, delta₇The fourth correction coefficient is preset; n is_{e_min}The maximum torque lower limit rotating speed is obtained, and n is the rotating speed of the engine; acc is the throttle opening, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and the third whole-course speed regulation scheme is set to be a speed regulation scheme matched with the power area, so that the rotating speed of the engine is controlled when the road load is determined to be increased in the running process of the vehicle, the speed of the vehicle is delayed to be reduced under the condition that the output torque of the engine is adaptively improved, and the stable running of the vehicle is ensured.

According to the vehicle speed regulating device based on the zone control, the working condition total zone of the engine is divided through the obtained zone rule and the zone limiting parameters, and then a matched speed regulating scheme is set for each zone obtained through division. Therefore, a speed regulation scheme with pertinence can be designed according to the driving requirements of users in different subareas, good driving feeling is guaranteed in the vehicle gear shifting process, and the vehicle control stability is improved. And the vehicle naturally runs in an oil-saving area of the engine, so that the actual use oil consumption of the vehicle is reduced, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the stable running of the vehicle is ensured.

For specific definition of the vehicle speed regulating device based on zone control, reference may be made to the definition of the vehicle speed regulating method based on zone control, and details are not repeated here. The respective modules in the zone control based vehicle speed adjusting apparatus described above may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be a terminal or a server, and its internal structure diagram may be as shown in fig. 5. The computer device includes a processor, a memory, and a communication interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of vehicle governing based on zone control.

Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program: acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed; dividing a total working condition area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions; aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-stroke speed regulation scheme and an equal-torque speed regulation scheme.

In one embodiment, the operating condition partition comprises an oil saving partition, a driving partition, a power partition and an oil limiting partition, and the processor executes the computer program to further implement the following steps: dividing a working condition total area of the engine according to a first partition rule and partition limiting parameters to obtain an oil saving area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is in a maximum torque rotating speed interval; dividing the working condition total area of the engine according to a second partition rule and partition limiting parameters to obtain a driving area with the accelerator opening smaller than the common accelerator opening and the engine rotating speed smaller than the maximum torque upper limit rotating speed; dividing the total working condition area of the engine according to a third partition rule and partition limiting parameters to obtain a power area with the accelerator opening larger than the common accelerator opening and the engine rotating speed smaller than the maximum torque lower limit rotating speed; and dividing the working condition total area of the engine according to the fourth partition rule and the partition limiting parameters to obtain an oil limiting area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is larger than the maximum torque lower limit rotating speed.

In one embodiment, the processor, when executing the computer program, further performs the steps of: the constant torque speed regulation scheme is determined by the following formula (1):

T(n,acc)＝δ₁*T_{n_max}*acc； (1)

wherein n is the engine speed, and acc is the accelerator opening; delta₁Is a preset first correction coefficient, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; the constant-torque speed regulation scheme is set to be matched with the oil saving area, so that the output torque T (n, acc) of the engine and the opening degree of an acceleratorand when the acc corresponds linearly, the stable operation of the vehicle is ensured.

In one embodiment, the processor, when executing the computer program, further performs the steps of: the first full throttle schedule is determined by equation (2) as follows:

wherein n is_accThe maximum idling speed correspondingly reached by the engine under the accelerator opening acc; delta₂Is a preset second correction coefficient, delta₃Is a preset third correction coefficient; n is_idleAt idle speed, n_pmaxIs a rated rotating speed; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and setting the first whole-course speed regulation scheme as a speed regulation scheme matched with the driving area, so that the rising of the rotating speed of the engine and the falling of the rotating speed of the engine are controlled to reach a preset control level in the gear shifting process of the vehicle, and the drivability in the gear shifting process and the stable operation of the vehicle are ensured.

In one embodiment, the processor, when executing the computer program, further performs the steps of: the second full range speed schedule is determined by the following equation:

wherein n is_{e_max}Maximum torque upper limit speed, δ₄Is a preset fourth correction coefficient, delta₅Is a preset fifth correction coefficient, delta₆The correction coefficient is a preset sixth correction coefficient; and the second whole-course speed regulation scheme is set to be a speed regulation scheme matched with the oil limit area, so that the rotating speed of the engine is controlled when the road load is determined to be reduced in the running process of the vehicle, the oil quantity of the engine is reduced timely, and the stable running of the vehicle is ensured.

In one embodiment, the processor, when executing the computer program, further performs the steps of: the third full throttle schedule is determined by equation (4) as follows:

T(n,acc)＝min(δ₇*(n_{e_min}-n)+T(n_{e_min},acc),T_{n_max})； (4)

wherein, delta₇The fourth correction coefficient is preset; n is_{e_min}The maximum torque lower limit rotating speed is obtained, and n is the rotating speed of the engine; acc is the throttle opening, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and the third whole-course speed regulation scheme is set to be a speed regulation scheme matched with the power area, so that the rotating speed of the engine is controlled when the road load is determined to be increased in the running process of the vehicle, the speed of the vehicle is delayed to be reduced under the condition that the output torque of the engine is adaptively improved, and the stable running of the vehicle is ensured.

According to the computer equipment, the working condition total area of the engine is divided through the acquired partition rule and the partition limiting parameter, and then a matched speed regulation scheme is set for each partition obtained through division. Therefore, a speed regulation scheme with pertinence can be designed according to the driving requirements of users in different subareas, good driving feeling is guaranteed in the vehicle gear shifting process, and the vehicle control stability is improved. And the vehicle naturally runs in an oil-saving area of the engine, so that the actual use oil consumption of the vehicle is reduced, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the stable running of the vehicle is ensured.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring a partition rule and a partition limiting parameter; the partition limiting parameters comprise a common accelerator opening, a maximum torque upper limit rotating speed, a maximum torque lower limit rotating speed and a maximum torque rotating speed interval determined according to the maximum torque upper limit rotating speed and the maximum torque lower limit rotating speed; dividing a total working condition area of the engine according to the partition rule and the partition limiting parameters to obtain a plurality of working condition partitions; aiming at each working condition subarea, respectively setting a matched speed regulation scheme to control the rotating speed of the engine, so that the vehicle adopts the speed regulation scheme matched with the working condition subarea to control the stable operation of the vehicle in the running process; the speed regulation scheme comprises at least one of a full-stroke speed regulation scheme and an equal-torque speed regulation scheme.

In one embodiment, the operating mode partition comprises an oil saving partition, a driving partition, a power partition and an oil limiting partition, the computer program when executed by the processor further implementing the steps of: dividing a working condition total area of the engine according to a first partition rule and partition limiting parameters to obtain an oil saving area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is in a maximum torque rotating speed interval; dividing the working condition total area of the engine according to a second partition rule and partition limiting parameters to obtain a driving area with the accelerator opening smaller than the common accelerator opening and the engine rotating speed smaller than the maximum torque upper limit rotating speed; dividing the total working condition area of the engine according to a third partition rule and partition limiting parameters to obtain a power area with the accelerator opening larger than the common accelerator opening and the engine rotating speed smaller than the maximum torque lower limit rotating speed; and dividing the working condition total area of the engine according to the fourth partition rule and the partition limiting parameters to obtain an oil limiting area, wherein the accelerator opening is larger than the common accelerator opening, and the engine rotating speed is larger than the maximum torque lower limit rotating speed.

In one embodiment, the computer program when executed by the processor further performs the steps of: the constant torque speed regulation scheme is determined by the following formula (1):

T(n,acc)＝δ₁*T_{n_max}*acc； (1)

wherein n is the engine speed, and acc is the accelerator opening; delta₁Is a preset first correction coefficient, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; the constant-torque speed regulation scheme is set to be matched with the oil saving area, and when the output torque T (n, acc) of the engine is linearly corresponding to the opening acc of the accelerator, the stable operation of the vehicle is ensured.

In one embodiment, the computer program when executed by the processor further performs the steps of: the first full throttle schedule is determined by equation (2) as follows:

wherein n is_accThe maximum idling speed correspondingly reached by the engine under the accelerator opening acc; delta₂Is a preset second correction coefficient, delta₃Is a preset third correction coefficient; n is_idleAt idle speed, n_pmaxIs a rated rotating speed; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and setting the first whole-course speed regulation scheme as a speed regulation scheme matched with the driving area, so that the rising of the rotating speed of the engine and the falling of the rotating speed of the engine are controlled to reach a preset control level in the gear shifting process of the vehicle, and the drivability in the gear shifting process and the stable operation of the vehicle are ensured.

In one embodiment, the computer program when executed by the processor further performs the steps of: the second full range speed schedule is determined by the following equation:

wherein n is_{e_max}Maximum torque upper limit speed, δ₄Is a preset fourth correction coefficient, delta₅Is a preset fifth correction coefficient, delta₆The correction coefficient is a preset sixth correction coefficient; and the second whole-course speed regulation scheme is set to be a speed regulation scheme matched with the oil limit area, so that the rotating speed of the engine is controlled when the road load is determined to be reduced in the running process of the vehicle, the oil quantity of the engine is reduced timely, and the stable running of the vehicle is ensured.

In one embodiment, the computer program when executed by the processor further performs the steps of: the third full throttle schedule is determined by equation (4) as follows:

T(n，acc)＝min(δ₇*(n_{e_min}-n)+T(n_{e_min}，acc),T_{n_max})； (4)

wherein, delta₇The fourth correction coefficient is preset; n is_{e_min}The maximum torque lower limit rotating speed is obtained, and n is the rotating speed of the engine; acc is the throttle opening, T_{n_max}The maximum torque corresponding to the engine speed n; t (n, acc) is the corresponding engine output torque when the engine speed is n and the accelerator opening is acc; and the third whole-course speed regulation scheme is set to be a speed regulation scheme matched with the power area, so that the rotating speed of the engine is controlled when the road load is determined to be increased in the running process of the vehicle, the speed of the vehicle is delayed to be reduced under the condition that the output torque of the engine is adaptively improved, and the stable running of the vehicle is ensured.

The storage medium divides the working condition total area of the engine through the obtained partition rule and the partition limiting parameter, and then sets a speed regulation scheme matched with each partition obtained through division. Therefore, a speed regulation scheme with pertinence can be designed according to the driving requirements of users in different subareas, good driving feeling is guaranteed in the vehicle gear shifting process, and the vehicle control stability is improved. And the vehicle naturally runs in an oil-saving area of the engine, so that the actual use oil consumption of the vehicle is reduced, the drivability, the use oil consumption and the power feeling of the vehicle are considered, and the stable running of the vehicle is ensured.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.