阅读说明：本技术 一种专用车辆远程油门的控制系统 (Control system of special vehicle remote accelerator ) 是由 岳伟 王开锋 王楠 张中刚 余纪邦 章峰 陈进博 张志勇 苑旭励 王金元 于 2021-08-25 设计创作，主要内容包括：本发明提供一种专用车辆远程油门的控制系统,包括：发动机控制器、油门切换开关、主油门和油门性能仿真终端。所述油门切换开关串接在所述发动机控制器的第一输入端与整车地之间,所述发动机控制器的第一输出端与所述主油门的控制端相连接。所述油门性能仿真终端与所述发动机控制端信号连接,用于对发动机控制器输出仿真油门性能参数的初始电压值,以模拟油门开度状态。所述发动机控制器在所述油门切换开关闭合时接收所述油门性能仿真终端输出的电压信号,并根据所述电压信号控制所述主油门的油门开度,以使发动机按设定转速运转。本发明能增加车辆远程油门控制的稳定性,降低车辆生产成本。(The invention provides a control system of a special vehicle remote throttle, which comprises: the system comprises an engine controller, an accelerator change-over switch, a main accelerator and an accelerator performance simulation terminal. The throttle change-over switch is connected in series between the first input end of the engine controller and the whole vehicle ground, and the first output end of the engine controller is connected with the control end of the main throttle. The accelerator performance simulation terminal is in signal connection with the engine control end and used for outputting an initial voltage value of a simulated accelerator performance parameter to the engine controller so as to simulate the accelerator opening state. And the engine controller receives the voltage signal output by the accelerator performance simulation terminal when the accelerator change-over switch is closed, and controls the accelerator opening of the main accelerator according to the voltage signal so as to enable the engine to operate at a set rotating speed. The invention can increase the stability of the remote accelerator control of the vehicle and reduce the production cost of the vehicle.)

1. A control system for a remote throttle of a special vehicle is characterized by comprising: the system comprises an engine controller, an accelerator change-over switch, a main accelerator and an accelerator performance simulation terminal;

the throttle change-over switch is connected between the first input end of the engine controller and the whole vehicle ground in series, and the first output end of the engine controller is connected with the control end of the main throttle;

the accelerator performance simulation terminal is in signal connection with the engine control end and is used for outputting an initial voltage value of a simulated accelerator performance parameter to the engine controller so as to simulate the accelerator opening state;

and the engine controller receives the voltage signal output by the accelerator performance simulation terminal when the accelerator change-over switch is closed, and controls the accelerator opening of the main accelerator according to the voltage signal so as to enable the engine to operate at a set rotating speed.

2. The system for controlling the remote throttle of the special vehicle as claimed in claim 1, further comprising: an alarm device;

the alarm device is in signal connection with the engine controller, and the engine controller controls the alarm device to give an alarm when the accelerator switch is closed.

3. The remote throttle control system for special vehicles as claimed in claim 2, wherein the alarm device comprises at least any one of the following: pilot lamp, buzzer and audible-visual annunciator.

4. The control system of the special vehicle remote throttle of claim 3, wherein the throttle performance simulation terminal comprises: a first voltage circuit and a second voltage circuit;

the output end of the first voltage circuit is connected with the second input end of the engine controller, and the output end of the second voltage circuit is connected with the third input end of the engine controller;

when the throttle switch is closed, the first voltage circuit outputs a first voltage, the second voltage circuit outputs a second voltage, and the engine controller simulates and outputs a throttle control curve according to the proportion value of the first voltage and the second voltage.

5. The system of claim 4, wherein the first voltage circuit comprises: a first resistor and a second resistor;

the first resistor and the second resistor are connected between a finished automobile power supply and a finished automobile ground in series, and a connection point of the first resistor and the second resistor serves as an output end of first voltage.

6. The system of claim 5, wherein the second voltage circuit comprises: a third resistor and a fourth resistor;

the third resistor and the fourth resistor are connected between a finished automobile power supply and a finished automobile ground in series, and a connection point of the third resistor and the fourth resistor serves as an output end of the second voltage.

7. The system of claim 6, wherein the ratio of the first voltage to the second voltage is defined according to a throttle characteristic curve of an engine.

8. The special vehicle remote throttle control system according to claim 7, wherein the ratio of the first resistance to the second resistance is between 17/3-96/125, the ratio of the third resistance to the fourth resistance is between 37/3-77/48, and the ratio of the first voltage to the second voltage is 2.

9. The special vehicle remote throttle control system as claimed in claim 8, wherein the throttle performance simulation terminal is of a connector structure, the first voltage circuit and the second voltage circuit are built in the connector structure, and the connector structure is further externally provided with 6 connecting terminals for electrically connecting with corresponding connecting ends of the first voltage circuit and the second voltage circuit.

Technical Field

The invention relates to the technical field of vehicle accelerator control, in particular to a control system of a special vehicle remote accelerator.

Background

The remote accelerator control function is a function commonly used by special vehicles such as wreckers, sanitation vehicles, overhead working vehicles, crane trucks and the like, and mainly realizes that the rotating speed of an engine is independently controlled in places outside a cab, the remote accelerator and a main accelerator can be completely kept consistent in parameters and realization functions, the rotating speed can be increased under different accelerator opening degrees, and the remote accelerator and the main accelerator cannot simultaneously play a role. When the control of the main throttle is switched to the control of the remote throttle, the control of the main throttle is invalid at the moment, and the control function of the remote throttle is activated; when the remote throttle is switched to the main throttle, the throttle signal is switched from the remote throttle control to the main throttle control. The existing remote throttle control function is mainly characterized in that a loading controller sends a throttle simulation signal to an engine controller ECU (electronic control Unit), so that the engine controller responds to remote throttle control, a power supply of the loading controller is sourced from a storage battery, and the storage battery has unstable voltage values under different loads due to more load electricity consumption, so that the unstable output voltage value of the throttle simulation signal sent by the loading controller is easily caused, and the stability of the rotating speed output of an engine is influenced.

Disclosure of Invention

The invention provides a control system of a special vehicle remote accelerator, which solves the problem of unstable accelerator simulation signals in the existing special vehicle remote accelerator control, can increase the stability of the vehicle remote accelerator control, and reduces the vehicle production cost.

In order to achieve the above purpose, the invention provides the following technical scheme:

a control system for a remote throttle of a special purpose vehicle, comprising: the system comprises an engine controller, an accelerator change-over switch, a main accelerator and an accelerator performance simulation terminal;

the throttle change-over switch is connected between the first input end of the engine controller and the whole vehicle ground in series, and the first output end of the engine controller is connected with the control end of the main throttle;

the accelerator performance simulation terminal is in signal connection with the engine control end and is used for outputting an initial voltage value of a simulated accelerator performance parameter to the engine controller so as to simulate the accelerator opening state;

and the engine controller receives the voltage signal output by the accelerator performance simulation terminal when the accelerator change-over switch is closed, and controls the accelerator opening of the main accelerator according to the voltage signal so as to enable the engine to operate at a set rotating speed.

Preferably, the method further comprises the following steps: an alarm device;

the alarm device is in signal connection with the engine controller, and the engine controller controls the alarm device to give an alarm when the accelerator switch is closed.

Preferably, the alarm device includes at least any one of the following: pilot lamp, buzzer and audible-visual annunciator.

Preferably, the throttle performance simulation terminal includes: a first voltage circuit and a second voltage circuit;

the output end of the first voltage circuit is connected with the second input end of the engine controller, and the output end of the second voltage circuit is connected with the third input end of the engine controller;

when the throttle switch is closed, the first voltage circuit outputs a first voltage, the second voltage circuit outputs a second voltage, and the engine controller simulates and outputs a throttle control curve according to the proportion value of the first voltage and the second voltage.

Preferably, the first voltage circuit includes: a first resistor and a second resistor;

the first resistor and the second resistor are connected between a finished automobile power supply and a finished automobile ground in series, and a connection point of the first resistor and the second resistor serves as an output end of first voltage.

Preferably, the second voltage circuit includes: a third resistor and a fourth resistor;

the third resistor and the fourth resistor are connected between a finished automobile power supply and a finished automobile ground in series, and a connection point of the third resistor and the fourth resistor serves as an output end of the second voltage.

Preferably, a proportional value of the first voltage to the second voltage is defined according to a throttle characteristic curve of the engine.

Preferably, the ratio of the first resistor to the second resistor is 17/3-96/125, the ratio of the third resistor to the fourth resistor is 37/3-77/48, and the ratio of the first voltage to the second voltage is 2.

Preferably, the throttle performance simulation terminal adopts a connector structure, the first voltage circuit and the second voltage circuit are arranged in the connector structure, and the 6 wiring terminals are also arranged outside the connector structure and are electrically connected with the connecting ends corresponding to the first voltage circuit and the second voltage circuit.

The invention provides a control system of a special vehicle remote accelerator, which is characterized in that an accelerator performance simulation terminal outputs an initial voltage value of a simulation accelerator performance parameter to an engine controller, and the engine controller controls the accelerator opening of a main accelerator according to a voltage signal output by the accelerator performance simulation terminal when an accelerator is switched on and off so as to enable the engine to operate at a set rotating speed. The problem of current special vehicle remote throttle control have the throttle simulation signal unstable is solved, can increase vehicle remote throttle control's stability, reduce vehicle manufacturing cost.

Drawings

In order to more clearly describe the specific embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below.

FIG. 1 is a schematic diagram of a control system for a remote throttle of a special vehicle provided by the invention.

Fig. 2 is a schematic diagram of a control circuit structure of a remote accelerator according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a throttle performance simulation terminal provided by the embodiment of the invention.

Detailed Description

In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.

The problem that an accelerator simulation signal is unstable in the current special vehicle remote accelerator control is solved. The invention provides a control system of a special vehicle remote accelerator, which is characterized in that an accelerator performance simulation terminal outputs an initial voltage value of a simulation accelerator performance parameter to an engine controller, and the engine controller controls the accelerator opening of a main accelerator according to a voltage signal output by the accelerator performance simulation terminal when an accelerator is switched on and off so as to enable the engine to operate at a set rotating speed. The problem of current special vehicle remote throttle control have the throttle simulation signal unstable is solved, can increase vehicle remote throttle control's stability, reduce vehicle manufacturing cost.

As shown in fig. 1 and 2, a control system for a remote throttle of a special vehicle comprises: the system comprises an engine controller ECU, an accelerator switch 11, a main accelerator and an accelerator performance simulation terminal 12. The throttle change-over switch 11 is connected in series between the first input end of the engine controller and the whole vehicle ground, and the first output end of the engine controller is connected with the control end of the main throttle. The accelerator performance simulation terminal 12 is in signal connection with the engine control end and is used for outputting an initial voltage value of a simulated accelerator performance parameter to the engine controller so as to simulate the accelerator opening state. And the engine controller receives the voltage signal output by the accelerator performance simulation terminal when the accelerator change-over switch is closed, and controls the accelerator opening of the main accelerator according to the voltage signal so as to enable the engine to operate at a set rotating speed.

Specifically, as shown in fig. 1, the upper end portion only needs to be provided with a throttle switch, the switch is connected with the engine controller ECU through a connector 14, and the chassis portion is added with a throttle performance simulation terminal 12 and is connected with the engine controller ECU through a connector 13. And (4) closing an accelerator change-over switch, and switching an accelerator signal from the main accelerator to the remote accelerator, wherein the main accelerator is in failure control and the remote accelerator is activated. When it is disconnected. When the accelerator is switched to the switch, the accelerator signal is switched from the remote accelerator control to the main accelerator control, and at the moment, the remote accelerator control is invalid and the main accelerator control is activated. It should be noted that only one of the main throttle and the remote throttle can be activated at the same time. The accelerator performance simulation terminal outputs stable voltage to the engine controller, and the accelerator opening is controlled by a simulated accelerator control characteristic curve, so that the rotating speed of the engine is kept stable, and the stability of remote accelerator control of the vehicle can be ensured. Meanwhile, the system does not need to be provided with a controller for carrying out signal interaction on an engine controller, and the upper part only needs to be provided with a remote throttle change-over switch, so that the system can save equipment cost and reduce the production cost of vehicles.

The system further comprises: an alarm device; the alarm device is in signal connection with the engine controller, and the engine controller controls the alarm device to give an alarm when the accelerator switch is closed.

Further, the alarm device at least comprises any one of the following components: pilot lamp, buzzer and audible-visual annunciator.

The throttle performance simulation terminal comprises: a first voltage circuit and a second voltage circuit; the output end of the first voltage circuit is connected with the second input end of the engine controller, and the output end of the second voltage circuit is connected with the third input end of the engine controller. When the throttle switch is closed, the first voltage circuit outputs a first voltage, the second voltage circuit outputs a second voltage, and the engine controller simulates and outputs a throttle control curve according to the proportion value of the first voltage and the second voltage.

As shown in fig. 1, the first voltage circuit includes: a first resistor R1 and a second resistor R2. The first resistor R1 and the second resistor R2 are connected between a finished automobile power supply and a finished automobile ground in series, and the connection point of the first resistor R1 and the second resistor R2 serves as an output end of first voltage.

Further, the second voltage circuit includes: a third resistor R3 and a fourth resistor R4; the third resistor R3 and the fourth resistor R4 are connected between a finished automobile power supply and a finished automobile ground in series, and a connection point of the third resistor R3 and the fourth resistor R4 serves as an output end of a second voltage.

In practical application, the ECU provides 5V voltage to the first voltage circuit and the second voltage circuit through the power supply 1 and the power supply 2 respectively, and forms a loop through the ground 1 and the ground 2. At this time, according to different resistance value ratios of R1, R2, R3 and R4, the terminal resistor outputs different voltage values to the ECU through the first voltage and the second voltage.

Further, a proportional value of the first voltage and the second voltage is defined according to a throttle characteristic curve of the engine.

Furthermore, the ratio of the first resistor to the second resistor is 17/3-96/125, the ratio of the third resistor to the fourth resistor is 37/3-77/48, and the ratio of the first voltage to the second voltage is 2.

In practical application, the resistance values of R1 and R2 are set to satisfy the R1/R2 ratio of 17/3-96/125, the resistance values of R3 and R4 satisfy the R3/R4 ratio of 37/3-77/48, and the R2/(R1+ R2) ═ 2R4/(R3+ R4) is ensured.

In one embodiment, when an engine of a certain type has an idle speed of 800rpm and a rated speed of 2800rpm, and a constant speed output of about 1200rpm is to be obtained, a first voltage output voltage value is required according to a linear accelerator characteristic curve:

V3＝0.75+(3.84-0.75)×(1200-800)/(2800-800)＝1.368V；

the second voltage output voltage value is: v4 ═ 1.368/2 ═ 0.684V;

therefore, R2/(R1+ R2) is 1.368/5, and R4/(R3+ R4) is 0.684/5.

The resistance values of R1, R2, R3, R4 can be set as:

R2＝200Ω，R4＝200Ω，R1＝531Ω，R3＝1262Ω。

the voltage values output to the ECU by the first voltage and the second voltage meet the initial voltage value of the accelerator performance parameter, at the moment, the state that the accelerator opening is 3.6 degrees can be simulated, and at the moment, the engine can output the constant rotating speed 1200rpm with the accelerator opening being 3.6 degrees.

Further, the throttle performance simulation terminal adopts a connector structure, the first voltage circuit and the second voltage circuit are arranged in the connector structure, and the 6 wiring terminals are also arranged outside the connector structure and are electrically connected with the connecting ends corresponding to the first voltage circuit and the second voltage circuit.

In practical application, as shown in fig. 2 and 3, the accelerator performance simulation terminal adopts a connector structure, the connection terminals are shown in table 1, the first connection terminal 1 is connected with a connection terminal K-14 of the ECU, the second connection terminal 2 is connected with a connection terminal K-23 of the first voltage circuit, the third connection terminal 3 is connected with a connection terminal K-22 of the first voltage circuit, the fourth connection terminal 4 is connected with a connection terminal K-15 of the ECU, the fifth connection terminal 5 is connected with a connection terminal K-26 of the second voltage circuit, and the sixth connection terminal 6 is connected with a connection terminal K-25 of the second voltage circuit.

TABLE 1

Connecting terminal	Connecting end	Description of the invention
			1	K-14	Grounding 1
2	K-23	Signal 3
			3	K-22	Power supply 1
4	K-15	Earthing 2
			5	K-26	Signal 4
6	K-25	Power supply 2

As shown in FIG. 2, the engine controller ECU provides 5V voltage to the terminal resistor through pins K-22 (power supply 1) and K-25 (power supply 2), respectively, and forms a loop through pins K-14 (ground 1) and K-15 (ground 2). At this time, the terminal resistor outputs different voltage values to the ECU through K-23 (signal 3) and K-23 (signal 4) according to different resistance value ratios of R1, R2, R3 and R4.

In one embodiment, the vehicle type terminal resistor is set to have the resistance values of R1 and R2 satisfy R1/R2-17/3, and the resistance values of R3 and R4 satisfy R3/R4-37/3. At this time:

the first voltage value is V3 ═ 5 × R2/(R1+ R2) ═ 5 × 3/(17+3) ═ 0.75V;

the second voltage value is V4 ═ 5 × R4/(R3+ R4) ═ 5 × 3/(37+3) ═ 0.375V;

the voltage value output by the first voltage and the second voltage to the ECU meets the initial voltage value of the accelerator performance parameter, at the moment, the state that the accelerator opening is 0 can be simulated, and at the moment, the engine can output the constant rotating speed (the engine idling rotating speed) that the accelerator opening is 0.

The invention provides a control system of a special vehicle remote accelerator, which is characterized in that an accelerator performance simulation terminal outputs an initial voltage value of a simulation accelerator performance parameter to an engine controller, and the engine controller controls the accelerator opening of a main accelerator according to a voltage signal output by the accelerator performance simulation terminal when an accelerator switch is closed, so that an engine runs at a set rotating speed. The problem of current special vehicle remote throttle control have the throttle simulation signal unstable is solved, can increase vehicle remote throttle control's stability, reduce vehicle manufacturing cost.

The construction, features and functions of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings, and all equivalent embodiments modified or modified by the spirit and scope of the present invention should be protected without departing from the spirit of the present invention.