Slope starting control method applicable to IMT vehicle idling start and stop work condition

A technology of idling start-stop and hill start, which is applied in the direction of control devices, vehicle components, external condition input parameters, etc., can solve the problems of increasing user complaints, inability to flexibly apply the idling start-stop function, and slopes, so as to improve driving comfort Performance and safety performance, easy promotion and use, and small hardware investment

Inactive Publication Date: 2016-07-27
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Claims
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Problems solved by technology

[0004] However, on the existing IMT models, the idling start-stop function cannot be flexibly applied according to the size of the slope. On the contrary, the idling start-stop function of the vehicle is still activated on a relatively large slope, which makes the vehicle slide seriously when the vehicle starts again, and increases the number of users. Complaints, so the addition of idle start-stop function to traditional IMT models is difficult to meet user requirements

Method used

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  • Slope starting control method applicable to IMT vehicle idling start and stop work condition
  • Slope starting control method applicable to IMT vehicle idling start and stop work condition

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[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0011] Such as figure 1 As shown, the accelerator signal and brake signal are transmitted to the TCU (transmission control unit) 1 through the CAN bus, the gradient sensor 2 is connected to the TCU1 by hard wire, the TCU controls the clutch actuator 3, and at the same time communicates with the ECU (engine control unit) 4 Speed ​​and torque request, the clutch actuator 3 controls the separation and engagement of the clutch 5 .

[0012] figure 2 As the flow chart of this control method, during the driving process of the vehicle, the TCU collects the slope signal of the slope sensor in real time. When the driver releases the accelerator pedal (accelerator signal is 0), steps on the brake pedal...

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Abstract

The invention discloses a slope starting control method applicable to the IMT vehicle idling start and stop work condition. When it is judged that a vehicle tends to stop, a road gradient acquired by a gradient sensor is judged with a threshold, and therefore the idling start and stop function is correspondingly controlled to be enabled or disenabled. The slope starting control method applicable to the IMT vehicle idling start and stop work condition can effectively solve the starting slope slip problem, and driving comfort and safety are improved.

Description

technical field [0001] The invention relates to the technical field of idling start and stop of automobile engines, in particular to a ramp start control method suitable for the idling start and stop working conditions of IMT vehicles. Background technique [0002] In order to further reduce the fuel consumption, exhaust emission and engine noise of vehicles, various OEMs are developing new technology applications in recent years. Among them, the idling start-stop function has been recognized for its advantages of energy saving, environmental protection, prolonging the service life of the engine, and easy realization. All major manufacturers of all ages. [0003] Idle start and stop is a system that can automatically control the engine flameout and ignition. When the vehicle is waiting for traffic lights or traffic jams and other temporary parking situations, the ECU will automatically turn off the engine, thereby saving fuel consumption and reducing exhaust emissions. When ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W10/02B60W10/06
CPCB60W10/02B60W10/06B60W30/18027B60W2710/0666B60W2710/0644B60W2710/021
Inventor 宋珍珍高海波张学勇罗超文王银
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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