阅读说明：本技术 一种汽车快速暖机的方法及系统 (Method and system for quickly warming automobile ) 是由 林承伯 徐琳 乔艳菊 董春艳 吴广权 张博 于 2019-01-08 设计创作，主要内容包括：本发明公开了一种汽车快速暖机的方法及系统,所述方法包括：当发动机处于工作状态且当前水温值小于暖机结束阈值,则使温控模块进入快速暖机模式；快速暖机模式下控制主要控制参数根据参数规则进入快速暖机模式基础值；获取整车的散热实际情况判断当前风险指数情况,并根据当前风险指数情况调整主要控制参数,读取参数调整后的当前水温值；当发动机处于工作状态且当前水温值大于暖机结束阈值,则使温控模块进入正常工作模式。本发明提供了一种可以主动控制暖机过程的快速暖机方法,不仅可进一步加速暖机,还解决了目前暖机方法存在的保障快速暖机时不能同时实现对暖机过程主动控制的问题。(The invention discloses a method and a system for quickly warming up an automobile, wherein the method comprises the following steps: when the engine is in a working state and the current water temperature value is smaller than a warming-up finishing threshold value, enabling the temperature control module to enter a rapid warming-up mode; controlling main control parameters to enter a basic value of the rapid warming mode according to parameter rules in the rapid warming mode; acquiring the actual heat dissipation condition of the whole vehicle, judging the current risk index condition, adjusting main control parameters according to the current risk index condition, and reading the current water temperature value after parameter adjustment; and when the engine is in a working state and the current water temperature value is greater than the warming-up finishing threshold value, enabling the temperature control module to enter a normal working mode. The invention provides a quick warming-up method capable of actively controlling a warming-up process, which not only can further accelerate the warming-up, but also solves the problem that the active control on the warming-up process cannot be realized simultaneously when the quick warming-up is ensured in the conventional warming-up method.)

1. A method for quickly warming up an automobile is characterized by comprising the following steps:

after the whole vehicle is powered on, the temperature control module performs self-checking and detects whether the water temperature sensor is normal, and when the self-checking is normal and the water temperature sensor is normal, the working state of the engine is judged and the current water temperature value is read;

when the engine is in a working state and the current water temperature value is smaller than a warming-up finishing threshold value, enabling the temperature control module to enter a rapid warming-up mode;

controlling main control parameters to enter a quick warm-up mode basic value according to parameter rules in a quick warm-up mode, wherein the main control parameters comprise duration of opening each time, angle position of opening each time and duration of closing each time in an ON-OFF mode;

acquiring the actual heat dissipation condition of the whole vehicle, judging the current risk index condition, adjusting main control parameters according to the current risk index condition, and reading the current water temperature value after parameter adjustment;

and when the engine is in a working state and the current water temperature value is greater than the warming-up finishing threshold value, enabling the temperature control module to enter a normal working mode.

2. The method for rapidly warming up an automobile according to claim 1, further comprising,

when the self-checking is abnormal, the temperature control module gives an alarm to limit the torque of the engine and send a full-open signal of the radiator branch to the temperature control module;

when the water temperature sensor is detected to be abnormal, an alarm is given, and a full opening signal of the radiator branch is sent to the temperature control module.

3. The method for rapidly warming up an automobile according to claim 1, further comprising, when the engine is not in operation, entering a safe operation mode, namely, a preset safest position, wherein the angular position is maintained at a maximum opening.

4. The method for rapidly warming up the automobile according to claim 1, wherein the self-checking comprises the following steps,

adjusting the current opening angle position to the maximum opening angle, and determining whether the position is normal;

adjusting the position from the maximum opening angle to the minimum opening angle to confirm whether the position is normal or not;

and when the maximum opening angle and the minimum opening angle are confirmed, the positions are normal, and the maximum opening angle is returned.

5. The method for rapidly warming up the automobile according to any one of claims 1 to 4, wherein the obtaining of the actual condition of heat dissipation of the whole automobile and the judgment of the current risk index condition comprise,

the method comprises the steps of obtaining the rotating speed, the load and the vehicle speed of an engine, establishing a risk evaluation model according to the rotating speed, the load and the vehicle speed of the engine, and judging the current risk index condition according to the risk evaluation model.

6. The method for rapidly warming up the automobile according to any one of claims 1 to 4, wherein the obtaining of the actual condition of heat dissipation of the whole automobile and the judgment of the current risk index condition comprise,

obtaining the rotating speed, load and speed of the engine, judging whether the current engine is in a large-load working condition, if so, further judging, and if not, judging that no risk exists currently;

when the engine is in a large-load working condition, judging whether the engine is at present in an overheating risk mode according to the rotating speed and the vehicle speed of the engine, if so, judging that the risk index is higher at present, and if not, judging that the risk index is lower at present.

7. The method for rapidly warming the automobile according to any one of claims 1 to 4, wherein the risk index condition comprises a higher risk index, a lower risk index and no risk;

when the risk index is higher, the temperature control module is made to exit the rapid warming mode and the opening angle position is adjusted;

when the risk index is lower, the temperature control module is kept in a quick warming mode, and the duration of each opening and closing is adjusted;

when the temperature control module is in a risk-free condition, the temperature control module is enabled to keep a quick warming mode and acquire other demand conditions, and main control parameters are adjusted according to the other demand conditions.

8. A system for quickly warming an automobile comprises an engine, and is characterized by further comprising a temperature control module, an engine controller and a water temperature sensor;

the temperature control module acquires working state information of the temperature control module by self-checking and sends the working state information to the engine controller, and if the self-checking is abnormal, alarm information is sent out, and main control parameters are changed according to signals of the engine controller;

the water temperature sensor detects water temperature and sends water temperature information to the engine controller;

the engine controller acquires the working information of the engine, controls the torque limit of the engine according to the working state information, and sends a signal for adjusting the main control parameter of the temperature control module according to the water temperature information and the working information of the engine.

9. The system of claim 8, wherein the temperature control module comprises a motor, a ball valve, and a position sensor, the motor drives the ball valve to rotate, and the position sensor reads the size of the position of the ball valve.

Technical Field

The invention relates to the field of automobile engine temperature control, in particular to a method and a system for quickly warming an automobile.

Background

The cooling system of the automobile engine ensures that the engine works at the most suitable temperature through temperature adjustment, and the cooling system of the whole automobile in the market at present usually uses a mechanical water pump heating thermostat. The physical structure of the thermostat is mainly wax bags, when the water temperature is low, the wax bags are solid, the springs are limited, a branch of cooling liquid leading to the radiator is closed, when the water temperature is too high, the wax bags are melted, and the springs act to open the branch of the radiator to cool. This configuration determines that the engine cooling system can be switched only between a large-cycle (radiator-engaged) state and a small-cycle (radiator-not-engaged) state. Based on the physical characteristics of the wax pack, whether the thermostat is open or not depends on the current water temperature, and a gradual process exists when the thermostat is fully closed to fully open, so that the response is slow.

The temperature is lower when the car is cold to start, and because the characteristic of temperature saver, the warm-up process temperature saver all is not opened, and the cooling water walks the microcirculation, does not to outer heat dissipation, nevertheless can't carry out more control again. When the temperature of water rises to a sufficient temperature, the response characteristic of the wax bag can cause the water temperature to oscillate when the thermostat is opened, the water temperature cannot rise continuously within a period of time, and the final result, namely the overall warming-up time is long and uncontrollable. In recent years, a scheme of using a mechanical water pump and an electronic thermostat is provided, the water temperature can be adjusted to a certain degree when an automobile runs normally, but the warming-up process is the same as that of the traditional thermostat scheme.

For the traditional warming-up scheme, the problem of long warming-up time exists, and more vehicle models are on the market at present to emphasize the effect of quick warming-up. The common schemes are mainly two, one is that a clutch type water pump is separated, and in the warm-up stage, the clutch is disconnected, so that the water pump loses power, and the circulation of cooling liquid is stopped; and the other is that a valve is additionally arranged in a small cycle by switching on and off the valve, and the small cycle is forcibly closed in the warm-up stage to stop the flow of the cooling liquid. Because the two modes essentially stop the heat exchange process from the inside to the outside of the engine, the temperature of the cylinder wall of the engine is quickly increased through heat accumulation, and the integral temperature rise is accelerated. Therefore, both of these methods have a problem that the warm-up process cannot be actively controlled.

Particularly, a clutch is additionally arranged between a belt wheel of an engine and a water pump of the clutch type water pump, the complexity of the system is improved, the gears are abraded due to the attraction of the clutch in the long-term use process, and higher risks exist in the mechanical structure. In addition, the scheme usually only uses a simple control form, can only realize on and off, does not have an intermediate change process, and cannot carry out stepless adjustment. It also usually cannot feed back the current working state and cannot make active diagnosis. The clutch type water pump only acts in the warming-up stage, and the working form of the clutch type water pump is not different from that of a common water pump in order to ensure the safety in the normal running process of the whole vehicle. The structure of the switch valve is simpler than that of a clutch type water pump, but the switch valve can only be switched on and off without intermediate change process, cannot be subjected to stepless adjustment and active diagnosis, and only acts in a warming-up stage.

In summary, in the current practical production, the warming-up process has a further improved requirement, and a rapid warming-up method capable of actively controlling the warming-up process is lacked, so that the problem that the active control of the warming-up process cannot be realized simultaneously when the rapid warming-up is ensured by the existing warming-up method is solved.

Disclosure of Invention

The invention provides a method and a system for quickly warming up an automobile, which aim to further accelerate the warming-up process and simultaneously solve the problem that the active control on the warming-up process cannot be realized simultaneously when the conventional warming-up method ensures quick warming-up.

In order to achieve the above object, the present invention provides a method for quickly warming up an automobile, comprising:

after the whole vehicle is powered on, the temperature control module performs self-checking and detects whether the water temperature sensor is normal, and when the self-checking is normal and the water temperature sensor is normal, the working state of the engine is judged and the current water temperature value is read;

when the engine is in a working state and the current water temperature value is smaller than a warming-up finishing threshold value, enabling the temperature control module to enter a rapid warming-up mode;

controlling main control parameters to enter a quick warm-up mode basic value according to parameter rules in a quick warm-up mode, wherein the main control parameters comprise duration of opening each time, angle position of opening each time and duration of closing each time in an ON-OFF mode;

acquiring the actual heat dissipation condition of the whole vehicle, judging the current risk index condition, adjusting main control parameters according to the current risk index condition, and reading the current water temperature value after parameter adjustment;

and when the engine is in a working state and the current water temperature value is greater than the warming-up finishing threshold value, enabling the temperature control module to enter a normal working mode.

Compared with the prior art, the method for quickly warming the automobile disclosed by the invention has the advantages that the actual heat dissipation condition of the whole automobile is obtained through the engine controller, the current risk index condition is judged, the main control parameters of the temperature control module are adjusted according to the current risk index condition, the main control parameters comprise the duration time of each opening, the angle position of each opening and the duration time of each closing in an ON-OFF mode, namely the opening angle of the temperature control module is changed according to the actual heat dissipation condition of the whole automobile, and the flow control of each branch is realized by controlling the opening angle. The temperature control module is adopted to control the flow of the branch by changing the opening angle, the wax bag melting process is avoided, the adjusting speed is extremely high, the water temperature response speed is improved, the temperature control module actively sends the working state information of the temperature control module to the engine controller, the engine controller can acquire the information at any time for diagnosis, complex judgment is not needed through external parameters, the control process is simplified, the response speed is improved, and the function of quickly warming up the automobile engine is realized. And because the engine controller can adjust the main control parameters of the temperature control module according to the current situation, the actual heat dissipation situation of the whole vehicle is actively acquired in the warming-up process, the main control parameters of the temperature control module are adjusted in real time according to the actual heat dissipation situation of the whole vehicle, the active control of the rapid warming-up is realized, and the proper warming-up parameters are adapted for the engine. Therefore, the invention realizes the active control of the warming-up process while ensuring the quick warming-up of the engine, and the temperature control module is different from the clutch type water pump and the switch valve, thereby not only realizing the stepless adjustment and more accurate adjustment of the water temperature, but also being used in the normal driving process, so that the engine can work at the optimal temperature point at any moment without being limited to the accelerated warming-up, and the application scene is wider. Based on the temperature control module, a set of control logic is established through the existing parameters of water temperature, vehicle speed, engine speed, load and the like under the condition that a water temperature sensor is not required to be added newly, so that the speed of warming up the automobile is increased. No matter the engine runs under any working condition, the method can evaluate according to the current engine state, and adjust the temperature control module to adapt proper warming parameters for the engine. The invention provides a quick warming-up method capable of actively controlling a warming-up process, and solves the problem that the active control on the warming-up process cannot be realized simultaneously when the quick warming-up is ensured in the conventional warming-up method.

Further, the method may further comprise,

when the self-checking is abnormal, the temperature control module gives an alarm to limit the torque of the engine and send a full-open signal of the radiator branch to the temperature control module;

when the water temperature sensor is detected to be abnormal, an alarm is given, and a full opening signal of the radiator branch is sent to the temperature control module.

In a preferred embodiment of the invention, when the temperature control module is abnormal in self-detection, the temperature control module gives an alarm, and the engine controller enables the engine to limit the torque and send a full-open signal of the radiator branch, so that the safety of an engine overheating protection system is avoided. When the water temperature sensor is detected to be abnormal, the engine controller gives an alarm and sends a full opening signal of the radiator branch, so that the safety of an engine overheating protection system is avoided. In the embodiment, under the condition of abnormal detection, alarm is given and the radiator branch is controlled to be fully opened, and the alarm and safety setting are additionally arranged on the basis of the original scheme, so that the safety of the system is further ensured, and the method for realizing active safety control on the warming process while ensuring quick warming is provided.

Further, the method further comprises that when the engine is in a non-working state, the temperature control module enters a safe working mode, namely is in a preset safest position, and the angle position is kept at the maximum opening degree.

In a preferred embodiment of the invention, when the self-detection is normal and the water temperature sensor is normal, the working state of the engine is judged, if the engine is in the working state, the temperature control module enters a rapid warming-up mode or a normal working mode, if the engine is not in the working state, the temperature control module enters a safe working mode, and the angle position is kept at the maximum opening degree, so that the system safety is ensured. In the embodiment, the working state of the engine is comprehensively considered, different response modes are provided for different states, the safety of the system is further ensured, and a method for realizing active safety control on the warming-up process while ensuring quick warming-up is provided.

Further, the self-test comprises the following steps,

adjusting the current opening angle position to the maximum opening angle, and determining whether the position is normal;

adjusting the position from the maximum opening angle to the minimum opening angle to confirm whether the position is normal or not;

and when the maximum opening angle and the minimum opening angle are confirmed, the positions are normal, and the maximum opening angle is returned.

In a preferred embodiment of the present invention, a self-checking method for a temperature control module is provided, in which the temperature control module respectively determines whether a minimum opening angle position and a maximum opening angle position are normal, and then returns to the maximum opening angle position, and the method ensures that the temperature control module is in the maximum opening angle position after self-checking, i.e., in a safe operating mode, thereby ensuring the safety of the system. There are many self-checking methods for the temperature control module, but in this embodiment, an optimal self-checking method is provided, that is, the temperature control module is located at the maximum opening angle position after the self-checking is completed, so that the safety of the system is ensured.

Further, the obtaining of the actual heat dissipation condition of the whole vehicle and the judgment of the current risk index condition comprise,

the method comprises the steps of obtaining the rotating speed, the load and the vehicle speed of an engine, establishing a risk evaluation model according to the rotating speed, the load and the vehicle speed of the engine, and judging the current risk index condition according to the risk evaluation model.

In a preferred embodiment of the invention, a risk evaluation model is established according to the rotating speed, the load and the speed of the engine, and the current risk index condition is judged through the risk evaluation model. In the embodiment, the current risk index condition can be judged according to the rotating speed, the load and the speed of the engine, no new sensing equipment is needed, and a set of control logic is established according to the existing parameters of the speed, the rotating speed, the load and the like of the engine so as to improve the speed of warming the automobile. No matter the engine runs under any working condition, the method can evaluate according to the current engine state, and adjust the temperature control module to adapt proper warming parameters for the engine. The method has the advantages of simplifying the configuration process of the warming-up parameters further, improving the practicability of the method, being simple and convenient, having strong transportability and extremely good practicability, being applicable to different devices and really providing a method for realizing the active control of the warming-up process while ensuring the rapid warming-up because other equipment is not required to be added.

Further, the obtaining of the actual heat dissipation condition of the whole vehicle and the judgment of the current risk index condition comprise,

obtaining the rotating speed, load and speed of the engine, judging whether the current engine is in a large-load working condition, if so, further judging, and if not, judging that no risk exists currently;

when the engine is in a large-load working condition, judging whether the engine is at present in an overheating risk mode according to the rotating speed and the vehicle speed of the engine, if so, judging that the risk index is higher at present, and if not, judging that the risk index is lower at present.

In a preferred embodiment of the invention, a specific method for analyzing the current risk index condition is provided, a simple current risk index analysis model is established directly through the rotating speed, the load and the vehicle speed of an engine, whether the engine is in a high-load working condition or not is judged firstly to judge whether the current state has risk or not, and when the current state is at risk, whether the current state is in a higher risk index state or a lower risk index state is judged through the rotating speed and the vehicle speed of the engine. According to the method, a simple model is established, the current risk index condition is qualitatively analyzed, a preliminary result can be quickly obtained through two-stage judgment, whether risk exists or not is judged, the risk degree is further determined after the risk is confirmed, the current risk index condition is quickly obtained through three parameters which can be simply obtained, the analysis process is simplified, the operation efficiency is improved, the quick response of the method in the quick warming process is guaranteed, and the implementation effect of the method is guaranteed.

Further, the risk index profile includes higher risk index, lower risk index and no risk;

when the risk index is higher, the temperature control module is made to exit the rapid warming mode and the opening angle position is adjusted;

when the risk index is lower, the temperature control module is kept in a quick warming mode, and the duration of each opening and closing is adjusted;

when the temperature control module is in a risk-free condition, the temperature control module is enabled to keep a quick warming mode and acquire other demand conditions, and main control parameters are adjusted according to the other demand conditions.

In a preferred embodiment of the present invention, the current risk index condition is divided into three conditions of a higher risk index, a lower risk index and no risk, different response schemes are provided for the three conditions, a parameter configuration method suitable for the different conditions is provided, parameter adjustment in the warming-up process is realized, the risk indexes are classified in this embodiment, parameter adjustment is performed through the three conditions, the parameter adjustment process is simplified, corresponding adjustment of each different risk index is avoided, and excessively detailed parameter adjustment cannot obtain a good response effect in practice but increases the system computation amount, so that the risk indexes are divided into three classes in this embodiment, different adjustment schemes are adopted for different classes, which not only reduces the computation pressure during parameter adjustment, but also ensures the safety of the system, and further ensures other requirements of users on the premise of no risk, the invention provides better user experience, and really provides a method for realizing active control of the warming process while guaranteeing quick warming on the premise of ensuring safety.

In order to achieve the purpose, the invention also provides a system for quickly warming up the automobile, which comprises an engine, a temperature control module, an engine controller and a water temperature sensor, wherein the engine is connected with the engine through a pipeline;

the temperature control module acquires working state information of the temperature control module by self-checking and sends the working state information to the engine controller, and if the self-checking is abnormal, alarm information is sent out, and main control parameters are changed according to signals of the engine controller;

the water temperature sensor detects water temperature and sends water temperature information to the engine controller;

the engine controller acquires the working information of the engine, controls the torque limit of the engine according to the working state information, and sends a signal for adjusting the main control parameter of the temperature control module according to the water temperature information and the working information of the engine.

Compared with the prior art, the system for quickly warming the automobile, disclosed by the invention, has the advantages that the actual heat dissipation condition of the whole automobile is obtained through the engine controller, the current risk index condition is judged, and the main control parameters of the temperature control module are adjusted according to the current risk index condition, wherein the main control parameters comprise the duration time of each opening, the angle position of each opening and the duration time of each closing in an ON-OFF mode, namely the opening angle of the temperature control module is changed according to the actual heat dissipation condition of the whole automobile, and the flow control of each branch is realized by controlling the opening angle. The temperature control module is adopted to control the flow of the branch by changing the opening angle, the wax bag melting process is avoided, the adjusting speed is extremely high, the water temperature response speed is improved, the temperature control module actively sends the working state information of the temperature control module to the engine controller, the engine controller can acquire the information at any time for diagnosis, complex judgment is not needed through external parameters, the control process is simplified, the response speed is improved, and the function of quickly warming up the automobile engine is realized. And because the engine controller can adjust the main control parameters of the temperature control module according to the current situation, the actual heat dissipation situation of the whole vehicle is actively acquired in the warming-up process, the main control parameters of the temperature control module are adjusted in real time according to the actual heat dissipation situation of the whole vehicle, the active control of the rapid warming-up is realized, and the proper warming-up parameters are adapted for the engine. Therefore, the invention realizes the active control of the warming-up process while ensuring the quick warming-up of the engine, and the temperature control module is different from the clutch type water pump and the switch valve, thereby not only realizing the stepless adjustment and more accurate adjustment of the water temperature, but also being used in the normal driving process, so that the engine can work at the optimal temperature point at any moment without being limited to the accelerated warming-up, and the application scene is wider. Based on the temperature control module, a set of control logic is established through the existing parameters of water temperature, vehicle speed, engine speed, load and the like under the condition that a water temperature sensor is not required to be added newly, so that the speed of warming up the automobile is increased. No matter the engine runs under any working condition, the system can evaluate according to the current engine state, and adjust the temperature control module to adapt to proper warming parameters for the engine. The invention provides a rapid warming-up system capable of actively controlling a warming-up process, which solves the problem that the active control on the warming-up process cannot be realized simultaneously when the rapid warming-up is ensured in the conventional warming-up method.

Further, the temperature control module comprises a motor, a ball valve and a position sensor, the motor drives the ball valve to rotate, and the position sensor reads the position of the ball valve.

In a preferred embodiment of the present invention, a specific structure of a temperature control module is provided, in which a motor drives a ball valve, when an opening of the ball valve is aligned with a corresponding pipeline, a corresponding branch is opened, and when the opening of the ball valve is misaligned with the corresponding pipeline, a flow rate of the branch can be closed, and a half-open/close state can be realized. The temperature control module can simultaneously control the flow of 3-5 branches, the flow of the branches such as a large circulation branch, a small circulation branch, a warm air branch, an oil cooler branch and the like is distributed according to the requirement, and the opening degree is actively adjusted at any time due to the fact that the opening degree is adjusted through the driving of a motor, so that the problem of the curing design of a traditional thermostat is solved; in addition, because the process of melting the wax packet does not exist, the adjusting speed is extremely high, and the response speed of the water temperature can be improved; the engine controller can be fed back to the engine controller for diagnosis at any time without complex judgment through external parameters; in addition, the temperature control module is different from the clutch type water pump and the switch valve, stepless adjustment can be achieved, water temperature can be adjusted more accurately, and meanwhile the temperature control module can be used in the normal driving process, so that the engine can work at the optimal temperature point at any time without being limited to accelerated warming, and the application scene is wide. Due to the advantages of the temperature control module, the system for quickly warming the automobile is further ensured to be applied under different states.

Drawings

FIG. 1 is a flow chart of a method for rapidly warming up an automobile according to the present invention;

FIG. 2 is a flow chart of a preferred embodiment of a method for rapidly warming up an automobile in accordance with the present invention;

fig. 3 is a block diagram illustrating a system for quickly warming up an automobile according to the present invention.

Detailed Description

As shown in FIG. 1, the method for quickly warming up an automobile of the invention comprises the following steps: after the whole vehicle is powered on, the temperature control module performs self-checking and detects whether the water temperature sensor is normal, and when the self-checking is normal and the water temperature sensor is normal, the working state of the engine is judged and the current water temperature value is read; when the engine is in a working state and the current water temperature value is smaller than a warming-up finishing threshold value, enabling the temperature control module to enter a rapid warming-up mode; controlling main control parameters to enter a quick warm-up mode basic value according to parameter rules in a quick warm-up mode, wherein the main control parameters comprise duration of opening each time, angle position of opening each time and duration of closing each time in an ON-OFF mode; acquiring the actual heat dissipation condition of the whole vehicle, judging the current risk index condition, adjusting main control parameters according to the current risk index condition, and reading the current water temperature value after parameter adjustment; and when the engine is in a working state and the current water temperature value is greater than the warming-up finishing threshold value, enabling the temperature control module to enter a normal working mode.

Compared with the prior art, the method for quickly warming the automobile disclosed by the invention has the advantages that the actual heat dissipation condition of the whole automobile is obtained through the engine controller, the current risk index condition is judged, the main control parameters of the temperature control module are adjusted according to the current risk index condition, the main control parameters comprise the duration time of each opening, the angle position of each opening and the duration time of each closing in an ON-OFF mode, namely the opening angle of the temperature control module is changed according to the actual heat dissipation condition of the whole automobile, and the flow control of each branch is realized by controlling the opening angle. The temperature control module is adopted to control the flow of the branch by changing the opening angle, the wax bag melting process is avoided, the adjusting speed is extremely high, the water temperature response speed is improved, the temperature control module actively sends the working state information of the temperature control module to the engine controller, the engine controller can acquire the information at any time for diagnosis, complex judgment is not needed through external parameters, the control process is simplified, the response speed is improved, and the function of quickly warming up the automobile engine is realized. And because the engine controller can adjust the main control parameters of the temperature control module according to the current situation, the actual heat dissipation situation of the whole vehicle is actively acquired in the warming-up process, the main control parameters of the temperature control module are adjusted in real time according to the actual heat dissipation situation of the whole vehicle, the active control of the rapid warming-up is realized, and the proper warming-up parameters are adapted for the engine. Therefore, the invention realizes the active control of the warming-up process while ensuring the quick warming-up of the engine, and the temperature control module is different from the clutch type water pump and the switch valve, thereby not only realizing the stepless adjustment and more accurate adjustment of the water temperature, but also being used in the normal driving process, so that the engine can work at the optimal temperature point at any moment without being limited to the accelerated warming-up, and the application scene is wider. Based on the temperature control module, a set of control logic is established through the existing parameters of water temperature, vehicle speed, engine speed, load and the like under the condition that a water temperature sensor is not required to be added newly, so that the speed of warming up the automobile is increased. No matter the engine runs under any working condition, the method can evaluate according to the current engine state, and adjust the temperature control module to adapt proper warming parameters for the engine. The invention provides a quick warming-up method capable of actively controlling a warming-up process, and solves the problem that the active control on the warming-up process cannot be realized simultaneously when the quick warming-up is ensured in the conventional warming-up method.

In an embodiment of the present invention, the basic value of the fast warm-up mode is a basic parameter value satisfying a parameter rule, and the parameter rule is a correlation relationship that is satisfied between parameters in an actual situation. In the present embodiment, the duration t of each turn-ON in the ON-OFF mode_onAngular position P at each opening_wAnd duration t at each shut down_off. The rotating speed of the water pump can be obtained according to the current rotating speed n of the engine and the speed ratio of the water pump, and the current flow q of the water pump can be obtained by looking up a table through the flow resistance characteristic of the engine and the flow-lift curve (obtained by actual measurement and stored in a controller) of the water pump_fThrough the position P of the temperature control module_wDetermining the proportion R of the small-circulation branch opening_b(branch opening degree). Thus, the flow q flowing through each time the temperature control module operates in the ON-OFF cycle can be known_a＝f(q_f，R_b，t_on) The actual flow rate in each ON-OFF cycle is related to the engine water jacket volume V_eMaintain a certain relationship, typically 0.2V_e<q_a<0.8V_e. Opening degree R_bAnd the actual time t of opening_onThe setting of (c) needs to follow certain principles. The position of the temperature control module is changed from the minimum opening P each time in the ON-OFF cycle₀Starting to a certain opening degree P_wWhen a certain time t elapses_w1Move to P_wThen, stabilize for a certain time t_w2Thereafter from P_wGo back to P₀Also takes time t_w3. Wherein at t_w1、t_w3The flow rate in the two-stage system is gradually changed, and the corresponding flow rate q is changed_w1、q_w3And the integral of the corresponding flow under different opening degrees of the ball valve in the opening process is respectively equal to the integral of the corresponding flow under different opening degrees of the ball valve in the opening process. Temperature control module is in P_wPosition stabilization duration t_w2A phase (b) corresponding to a flow rate of q_w2Is the product of time and flow rate at the corresponding opening. The flow q flowing through during operation_a＝q_w1+q_w2+q_w3And t is_on＝t_w1+t_w2+t_w3. Opening degree R_bThe position of (2) generally needs to consider the control precision of the temperature control module, and the rotation angle of more than 5 degrees is required to be increased from the position of 0% of the opening degree of the branch to the opening direction, so that the ball valve is ensured to be in a real opening state every time the ball valve is turned ON. Suppose the opening degree R_bIf the setting is too large, t_w1、t_w3For too long, e.g. to ensure q_aIf the limit is not exceeded, t_w2It is set to a relatively small value, and as a result, the temperature control module is in continuous motion during the ON-OFF cycle, the ball valve and the seal ring are continuously worn, and the service life of the seal ring is affected in the long term, so t is generally required_w2>t_w1+t_w3. Under the above conditions, the controller automatically iterates out the minimum opening position P meeting the conditions_wAnd minimum on-time t_on. Off-time t in each cycle_offGenerally t is_on2-5 times of the total weight of the powder.

Further, the method also comprises the step that when the self-checking is abnormal, the temperature control module gives an alarm to limit the torque of the engine and send a full-open signal of the radiator branch to the temperature control module; when the water temperature sensor is detected to be abnormal, an alarm is given, and a full opening signal of the radiator branch is sent to the temperature control module. In a preferred embodiment of the invention, when the temperature control module is abnormal in self-detection, the temperature control module gives an alarm, and the engine controller enables the engine to limit the torque and send a full-open signal of the radiator branch, so that the safety of an engine overheating protection system is avoided. When the water temperature sensor is detected to be abnormal, the engine controller gives an alarm and sends a full opening signal of the radiator branch, so that the safety of an engine overheating protection system is avoided. In the embodiment, under the condition of abnormal detection, alarm is given and the radiator branch is controlled to be fully opened, and the alarm and safety setting are additionally arranged on the basis of the original scheme, so that the safety of the system is further ensured, and the method for realizing active safety control on the warming process while ensuring quick warming is provided.

Further, the method further comprises that when the engine is in a non-working state, the temperature control module enters a safe working mode, namely is in a preset safest position, and the angle position is kept at the maximum opening degree. In a preferred embodiment of the invention, when the self-detection is normal and the water temperature sensor is normal, the working state of the engine is judged, if the engine is in the working state, the temperature control module enters a rapid warming-up mode or a normal working mode, if the engine is not in the working state, the temperature control module enters a safe working mode, and the angle position is kept at the maximum opening degree, so that the system safety is ensured. In the embodiment, the working state of the engine is comprehensively considered, different response modes are provided for different states, the safety of the system is further ensured, and a method for realizing active safety control on the warming-up process while ensuring quick warming-up is provided.

Further, the self-checking comprises the following steps of adjusting the current opening angle position to the maximum opening angle, and determining whether the position is normal; adjusting the position from the maximum opening angle to the minimum opening angle to confirm whether the position is normal or not; and when the maximum opening angle and the minimum opening angle are confirmed, the positions are normal, and the maximum opening angle is returned. In a preferred embodiment of the present invention, a self-checking method for a temperature control module is provided, in which the temperature control module respectively determines whether a minimum opening angle position and a maximum opening angle position are normal, and then returns to the maximum opening angle position, and the method ensures that the temperature control module is in the maximum opening angle position after self-checking, i.e., in a safe operating mode, thereby ensuring the safety of the system. There are many self-checking methods for the temperature control module, but in this embodiment, an optimal self-checking method is provided, that is, the temperature control module is located at the maximum opening angle position after the self-checking is completed, so that the safety of the system is ensured.

In one embodiment of the invention, after the whole vehicle is powered on, the temperature control module starts to perform self-checking. Firstly, the current opening degree is adjusted to the maximum opening degree P₁₀₀Confirming the normal position and then starting from the maximum opening P₁₀₀Adjusted to the minimum opening P₀And after the position is confirmed to be normal, adjusting the position to the maximum opening. If the motor moves to the upper and lower dead points and can not move any more, but the position read by the position sensor does not reach the minimum or maximum value, or the signal fed back by the position sensor exceeds the normal range,the calibration of the position sensor cannot correspond to the actual position, and the self-checking is abnormal.

Further, the step of obtaining the actual heat dissipation condition of the whole vehicle and judging the current risk index condition comprises the steps of obtaining the rotating speed, the load and the vehicle speed of an engine, establishing a risk evaluation model according to the rotating speed, the load and the vehicle speed of the engine, and judging the current risk index condition according to the risk evaluation model. In a preferred embodiment of the invention, a risk evaluation model is established according to the rotating speed, the load and the speed of the engine, and the current risk index condition is judged through the risk evaluation model. In the embodiment, the current risk index condition can be judged according to the rotating speed, the load and the speed of the engine, no new sensing equipment is needed, and a set of control logic is established according to the existing parameters of the speed, the rotating speed, the load and the like of the engine so as to improve the speed of warming the automobile. No matter the engine runs under any working condition, the method can evaluate according to the current engine state, and adjust the temperature control module to adapt proper warming parameters for the engine. The method has the advantages of simplifying the configuration process of the warming-up parameters further, improving the practicability of the method, being simple and convenient, having strong transportability and extremely good practicability, being applicable to different devices and really providing a method for realizing the active control of the warming-up process while ensuring the rapid warming-up because other equipment is not required to be added.

In an embodiment of the present invention, since the heat dissipation condition of the entire vehicle is actually determined by the flow rate and the wind speed, the current heat exchange requirement is known based on the engine speed n and the load r, the current wind volume is converted by the vehicle speed v, a risk evaluation model can be established based on the three parameters, the evaluation parameter in ═ f (n, r, v), the risk evaluation model can be a function model that is calculated by the engine speed n, the load r and the vehicle speed v to obtain a specific risk index, or can be a simple evaluation model. In the embodiment, a simple evaluation model is provided, and the load condition, the speed condition and the gradient condition of the whole vehicle are respectively determined through the load r, the vehicle speed v and the engine speed n, for example, high-load low-speed climbing is determined as a condition with a higher risk index, high-load high-speed no-slope is determined as a condition with a lower risk index, and low-load is determined as a condition with no risk. The invention can determine the current risk index condition through the simple evaluation model.

Further, the step of obtaining the actual heat dissipation condition of the whole vehicle and judging the current risk index condition comprises the steps of obtaining the rotating speed, the load and the vehicle speed of the engine, judging whether the current engine is in a heavy-load working condition or not, if so, further judging, and if not, judging that no risk exists currently; when the engine is in a large-load working condition, judging whether the engine is at present in an overheating risk mode according to the rotating speed and the vehicle speed of the engine, if so, judging that the risk index is higher at present, and if not, judging that the risk index is lower at present. In a preferred embodiment of the invention, a specific method for analyzing the current risk index condition is provided, a simple current risk index analysis model is established directly through the rotating speed, the load and the vehicle speed of an engine, whether the engine is in a high-load working condition or not is judged firstly to judge whether the current state has risk or not, and when the current state is at risk, whether the current state is in a higher risk index state or a lower risk index state is judged through the rotating speed and the vehicle speed of the engine. According to the method, a simple model is established, the current risk index condition is qualitatively analyzed, a preliminary result can be quickly obtained through two-stage judgment, whether risk exists or not is judged, the risk degree is further determined after the risk is confirmed, the current risk index condition is quickly obtained through three parameters which can be simply obtained, the analysis process is simplified, the operation efficiency is improved, the quick response of the method in the quick warming process is guaranteed, and the implementation effect of the method is guaranteed.

Further, the risk index profile includes higher risk index, lower risk index and no risk; when the risk index is higher, the temperature control module is made to exit the rapid warming mode and the opening angle position is adjusted; when the risk index is lower, the temperature control module is kept in a quick warming mode, and the duration of each opening and closing is adjusted; when the temperature control module is in a risk-free condition, the temperature control module is enabled to keep a quick warming mode and acquire other demand conditions, and main control parameters are adjusted according to the other demand conditions. In a preferred embodiment of the present invention, the current risk index condition is divided into three conditions of a higher risk index, a lower risk index and no risk, different response schemes are provided for the three conditions, a parameter configuration method suitable for the different conditions is provided, parameter adjustment in the warming-up process is realized, the risk indexes are classified in this embodiment, parameter adjustment is performed through the three conditions, the parameter adjustment process is simplified, corresponding adjustment of each different risk index is avoided, and excessively detailed parameter adjustment cannot obtain a good response effect in practice but increases the system computation amount, so that the risk indexes are divided into three classes in this embodiment, different adjustment schemes are adopted for different classes, which not only reduces the computation pressure during parameter adjustment, but also ensures the safety of the system, and further ensures other requirements of users on the premise of no risk, the invention provides better user experience, and really provides a method for realizing active control of a warming-up process while guaranteeing quick warming-up on the premise of guaranteeing safety.

In one embodiment of the present invention, the other requirement of the user is a warm air requirement. If warm air or gas is needed in winter, the engine cooling circulation is required to be used as a heat source for air, but the warm air quality cannot be guaranteed when the water temperature is too low. Therefore, the heating threshold T is preset here_hWhen a warm air demand is received and the current water temperature is higher than the threshold value T_hIn the process, under the ON-OFF strategy of the warming main body, consideration of warm air needs to be added, and the temperature control module needs to be adjusted to a position P where the warm air can be opened every time the temperature control module is opened_h. If no other requirements exist, the position of the temperature control module is adjusted to the position P capable of maximizing the warming effect every time the temperature control module is opened_s。

In a preferred embodiment of the present invention, as shown in fig. 2, the method for quickly warming up the automobile is as follows.

After the whole vehicle is electrified, the temperature control module starts to perform self-checking. Firstly, the current opening degree is adjusted to the maximum opening degree P₁₀₀Confirming the position is normal, and thenMaximum opening degree P₁₀₀Adjusted to the minimum opening P₀And after the position is confirmed to be normal, adjusting the position to the maximum opening. If the motor moves to the upper stop point and the lower stop point and cannot move any more, but the position read by the position sensor does not reach the minimum or the maximum value, or the signal fed back by the position sensor exceeds the normal range, the calibration of the position sensor cannot correspond to the actual position, at the moment, an alarm is given, the engine is limited in torque, and the engine controller inputs a signal that the branch of the radiator is fully opened to the temperature control module.

And after the self-checking is normal, whether the water temperature sensor is in fault or not is judged, if the water temperature sensor is in fault, the engine controller gives an alarm, and a signal of fully opening the radiator branch is input to the temperature control module, so that the overheating of the engine is avoided.

If the water temperature sensor is normal, reading the current water temperature value T₀And checking whether the engine speed n is 0, if not, the temperature control module is preset at the safest position, namely, the maximum opening P is kept₁₀₀(ii) a If yes, checking the current water temperature value T₀Whether or not it is lower than warm-up end threshold T_endIf the temperature of the engine is higher than the threshold value, skipping a quick warm-up mode, enabling the temperature control module to enter a normal working mode, and carrying out real-time adjustment according to the actual running working condition of the engine and the difference between the actual water temperature and the target water temperature; such as the current water temperature value T₀Below the end-of-warm-up threshold T_endAnd the temperature control module enters a rapid warm-up mode.

In the rapid warm-up mode, a plurality of control parameters need to be set for the temperature control module based on the working condition of the engine, and correction is carried out according to a plurality of possible problems. The main parameters include: duration t of each opening in ON-OFF mode_onAngular position P at each opening_wAnd duration t at each shut down_off. The rotating speed of the water pump can be obtained according to the current rotating speed n of the engine and the speed ratio of the water pump, and the current flow q of the water pump can be obtained by looking up a table through the flow resistance characteristic of the engine and the flow-lift curve (obtained by actual measurement and stored in a controller) of the water pump_fThrough the position P of the temperature control module_wDetermining the proportion R of the small-circulation branch opening_b(Branch circuits)Opening degree). Thus, the flow q flowing through each time the temperature control module operates in the ON-OFF cycle can be known_a＝f(q_f，R_b，t_on) The actual flow rate in each ON-OFF cycle is related to the engine water jacket volume V_eMaintain a certain relationship, typically 0.2V_e<q_a<0.8V_e. Opening degree R_bAnd the actual time t of opening_onThe setting of (c) needs to follow certain principles. The position of the temperature control module is changed from the minimum opening P each time in the ON-OFF cycle₀Starting to a certain opening degree P_wWhen a certain time t elapses_w1Move to P_wThen, stabilize for a certain time t_w2Thereafter from P_wGo back to P₀Also takes time t_w3. Wherein at t_w1、t_w3The flow rate in the two-stage system is gradually changed, and the corresponding flow rate q is changed_w1、q_w3And the integral of the corresponding flow under different opening degrees of the ball valve in the opening process is respectively equal to the integral of the corresponding flow under different opening degrees of the ball valve in the opening process. Temperature control module is in P_wPosition stabilization duration t_w2A phase (b) corresponding to a flow rate of q_w2Is the product of time and flow rate at the corresponding opening. The flow q flowing through during operation_a＝q_w1+q_w2+q_w3And t is_on＝t_w1+t_w2+t_w3. Opening degree R_bThe position of (2) generally needs to consider the control precision of the temperature control module, and the rotation angle of more than 5 degrees is required to be increased from the position of 0% of the opening degree of the branch to the opening direction, so that the ball valve is ensured to be in a real opening state every time the ball valve is turned ON. Suppose the opening degree R_bIf the setting is too large, t_w1、t_w3For too long, e.g. to ensure q_aIf the limit is not exceeded, t_w2It is set to a relatively small value, and as a result, the temperature control module is in continuous motion during the ON-OFF cycle, the ball valve and the seal ring are continuously worn, and the service life of the seal ring is affected in the long term, so t is generally required_w2>t_w1+t_w3. Under the above conditions, the controller automatically iterates out the minimum opening position P meeting the conditions_wAnd minimum on-time t_on. Shut down during each cycleTime t_offGenerally t is_on2-5 times of the total weight of the powder.

After obtaining several main control parameters, the parameters are adjusted according to the actual situation. The heat dissipation condition of the whole vehicle is actually determined by flow and wind speed, so that the current heat exchange requirement is known based on the rotating speed n and load r of an engine, the current wind volume is converted through the vehicle speed v, a risk evaluation model can be established based on the three parameters, an evaluation parameter i n is f (n, r, v), if the whole vehicle runs under a high-load working condition, but the whole vehicle is in low-speed climbing, and the risk index is higher, a rapid warming-up mode is forbidden, the opening degree of a temperature control module is adjusted through the high and low degrees of risk, and the proportion of large and small circulation opening is further adjusted, so that the overheating of the engine is avoided; if the whole vehicle runs under a high-load working condition but is a short-time working condition such as overtaking and the like, and the vehicle speed is higher, and the risk index is lower, the main strategy of warming-up is limited to a certain extent, and a correction coefficient C is set in advance_onAnd C_offAre respectively paired with t_onAnd t_offAdjustments are made to avoid the risk of overheating the engine while achieving rapid warm-up.

And if the working condition of the engine is a low-load and risk-free working condition, continuously judging whether other requirements such as warm air exist at present. If warm air or gas is needed in winter, the engine cooling circulation is required to be used as a heat source for air, but the warm air quality cannot be guaranteed when the water temperature is too low. Therefore, the heating threshold T is preset here_hWhen a warm air demand is received and the current water temperature is higher than the threshold value T_hIn the process, under the ON-OFF strategy of the warming main body, consideration of warm air needs to be added, and the temperature control module needs to be adjusted to a position P where the warm air can be opened every time the temperature control module is opened_h. If no other requirements exist, the position of the temperature control module is adjusted to the position P capable of maximizing the warming effect every time the temperature control module is opened_s。

Outputting final control parameters based on the base value calculated in the previous step and related adjustment requirements, enabling the temperature control module to effectively assist the engine to warm up, and enabling the water temperature to rise to exceed a set warm-up ending threshold T when the water temperature rises_endAnd then entering a normal working mode.

Compared with the traditional wax bag thermostat, the temperature control module based on motor control has the advantages of fast control response and capability of actively performing stepless regulation. Based on the advantage of realizing active control, the method can calculate according to relevant working parameters of the engine, automatically optimize the control of the engine warming process, actively evaluate the overheating risk, and greatly shorten the warming time under the condition of avoiding overheating of the engine. The invention can greatly accelerate the process of warming up the engine and lead the water temperature, the oil temperature and the wall temperature to rise to the optimal area in a short time, thereby effectively reducing the emission of the whole vehicle and realizing the effects of reducing the friction and the oil consumption of the whole machine. In cold regions, the problem of engine oil increase can be effectively solved.

As shown in FIG. 3, the invention also provides a system for rapidly warming up an automobile, which comprises an engine, a temperature control module, an engine controller and a water temperature sensor, wherein the engine is connected with the engine through a water inlet pipe; the temperature control module acquires working state information of the temperature control module by self-checking and sends the working state information to the engine controller, and if the self-checking is abnormal, alarm information is sent out, and main control parameters are changed according to signals of the engine controller; the water temperature sensor detects water temperature and sends water temperature information to the engine controller; the engine controller acquires the working information of the engine, controls the torque limit of the engine according to the working state information, and sends a signal for adjusting the main control parameter of the temperature control module according to the water temperature information and the working information of the engine.

Compared with the prior art, the system for quickly warming the automobile, disclosed by the invention, has the advantages that the actual heat dissipation condition of the whole automobile is obtained through the engine controller, the current risk index condition is judged, and the main control parameters of the temperature control module are adjusted according to the current risk index condition, wherein the main control parameters comprise the duration time of each opening, the angle position of each opening and the duration time of each closing in an ON-OFF mode, namely the opening angle of the temperature control module is changed according to the actual heat dissipation condition of the whole automobile, and the flow control of each branch is realized by controlling the opening angle. The temperature control module is adopted to control the flow of the branch by changing the opening angle, the wax bag melting process is avoided, the adjusting speed is extremely high, the water temperature response speed is improved, the temperature control module actively sends the working state information of the temperature control module to the engine controller, the engine controller can acquire the information at any time for diagnosis, complex judgment is not needed through external parameters, the control process is simplified, the response speed is improved, and the function of quickly warming up the automobile engine is realized. And because the engine controller can adjust the main control parameters of the temperature control module according to the current situation, the actual heat dissipation situation of the whole vehicle is actively acquired in the warming-up process, the main control parameters of the temperature control module are adjusted in real time according to the actual heat dissipation situation of the whole vehicle, the active control of the rapid warming-up is realized, and the proper warming-up parameters are adapted for the engine. Therefore, the invention realizes the active control of the warming-up process while ensuring the quick warming-up of the engine, and the temperature control module is different from the clutch type water pump and the switch valve, thereby not only realizing the stepless adjustment and more accurate adjustment of the water temperature, but also being used in the normal driving process, so that the engine can work at the optimal temperature point at any moment without being limited to the accelerated warming-up, and the application scene is wider. Based on the temperature control module, a set of control logic is established through the existing parameters of water temperature, vehicle speed, engine speed, load and the like under the condition that a water temperature sensor is not required to be added newly, so that the speed of warming up the automobile is increased. No matter the engine runs under any working condition, the system can evaluate according to the current engine state, and adjust the temperature control module to adapt to proper warming parameters for the engine. The invention provides a rapid warming-up system capable of actively controlling a warming-up process, which solves the problem that the active control on the warming-up process cannot be realized simultaneously when the rapid warming-up is ensured in the conventional warming-up method.

Further, the temperature control module comprises a motor, a ball valve and a position sensor, the motor drives the ball valve to rotate, and the position sensor reads the position of the ball valve. In a preferred embodiment of the present invention, a specific structure of a temperature control module is provided, in which a motor drives a ball valve, when an opening of the ball valve is aligned with a corresponding pipeline, a corresponding branch is opened, and when the opening of the ball valve is misaligned with the corresponding pipeline, a flow rate of the branch can be closed, and a half-open/close state can be realized. The temperature control module can simultaneously control the flow of 3-5 branches, the flow of the branches such as a large circulation branch, a small circulation branch, a warm air branch, an oil cooler branch and the like is distributed according to the requirement, and the opening degree is actively adjusted at any time due to the fact that the opening degree is adjusted through the driving of a motor, so that the problem of the curing design of a traditional thermostat is solved; in addition, because the process of melting the wax packet does not exist, the adjusting speed is extremely high, and the response speed of the water temperature can be improved; the engine controller can be fed back to the engine controller for diagnosis at any time without complex judgment through external parameters; in addition, the temperature control module is different from the clutch type water pump and the switch valve, stepless adjustment can be achieved, water temperature can be adjusted more accurately, and meanwhile the temperature control module can be used in the normal driving process, so that the engine can work at the optimal temperature point at any time without being limited to accelerated warming, and the application scene is wide. Due to the advantages of the temperature control module, the system for quickly warming the automobile is further ensured to be applied under different states.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.