Method and system for controlling starting of AMT vehicle

A control method and vehicle technology, applied to control devices, vehicle components, driver input parameters, etc., can solve problems such as inability to adapt to complex working conditions, poor starting smoothness, etc., and achieve the effect of taking into account the needs of starting power and smoothness

Active Publication Date: 2016-06-08
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the vehicle starting smoothness of the existing AMT vehicle starting control method is poor, and the problem of being unable to adapt to complex working conditions

Method used

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  • Method and system for controlling starting of AMT vehicle
  • Method and system for controlling starting of AMT vehicle
  • Method and system for controlling starting of AMT vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] figure 1 A schematic flow chart showing an AMT vehicle starting control method according to an embodiment of the present invention. Such as figure 1 As shown, the AMT vehicle starting control method includes:

[0045] S1: After monitoring the start signal, detect the engine speed, engine torque, current position of the clutch and the opening of the accelerator pedal;

[0046] S2: Obtain the change step of the clutch position according to the engine speed and the engine torque, and obtain the target position of the clutch and the displacement speed of the clutch according to the current position of the clutch and the change step;

[0047] S3: Obtain the set speed of the engine according to the opening of the accelerator pedal;

[0048] S4: Control the start of the AMT vehicle according to the target position of the clutch, the displacement spee...

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Abstract

The invention relates to a method and system for controlling starting of an AMT vehicle. The method includes the steps that after a starting signal is monitored, the rotating speed and the torque of an engine, the current position of a clutch and the opening of an accelerator pedal are detected; the changing step length of the position of the clutch is obtained according to the rotating speed and the torque of the engine, and the target position and the displacement speed of the clutch are obtained according to the current position of the clutch and the changing step length; the set rotating speed of the engine is obtained according of the opening of the accelerator pedal; and starting of the AMT vehicle is controlled according to the target position and the displacement speed of the clutch and the set rotating speed of the engine. According to the method and system for controlling starting of the AMT vehicle, target-position and displacement-speed dual-parameter control over the clutch is adopted, rotating speed override control over the engine is adopted, the clutch and the engine can be controlled accurately according to complex conditions, and the requirements for starting power and starting smoothness are well met.

Description

technical field [0001] The present invention relates to the technical field of vehicles, in particular to an AMT vehicle starting control method and system. Background technique [0002] AMT controls the clutch to gradually close when the vehicle starts, and uses the friction between the main and driven discs of the clutch to increase the speed of the vehicle and reduce the speed difference to complete the closure. The control of the clutch directly affects the comfort and acceleration ability of the vehicle starting. If the clutch closing speed is too fast, it will cause the acceleration shock of the vehicle body and the engine will suffocate. If the clutch closing speed is too slow, it will be difficult to meet the driver's rapid acceleration demand. The danger of the vehicle sliding downhill. [0003] An existing AMT vehicle starting control method determines the target clutch position according to the change and size of the accelerator pedal and the engine speed, and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W10/02B60W10/06
CPCB60W10/02B60W10/06B60W30/18027B60W2510/0225B60W2510/0638B60W2510/0657B60W2540/10B60W2710/022B60W2710/0644
Inventor 王彦波邓金涛任宪丰吴学强李强
Owner WEICHAI POWER CO LTD
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