Engine idle speed control-based AMT (Automated Mechanical Transmission) vehicle start control method

A technology of engine idle speed and control method, which is applied in the field of vehicle electronic control to achieve the effects of low idle speed, reduced power impact and strong output torque

Inactive Publication Date: 2011-10-12
SINO TRUK JINAN POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For drivers who lack driving experience, it is often difficult to achieve a comforta

Method used

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  • Engine idle speed control-based AMT (Automated Mechanical Transmission) vehicle start control method
  • Engine idle speed control-based AMT (Automated Mechanical Transmission) vehicle start control method

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Embodiment Construction

[0020] Such as figure 1 As shown, the main purpose of the present invention is to solve the problem of reducing the power shock and reducing the wear of the clutch during the starting process of the heavy-duty commercial AMT vehicle, and improving the comfort and economy of the vehicle as much as possible under the premise of maintaining power.

[0021] During the starting process of heavy-duty commercial AMT vehicles, AMT sends TCS1 through the vehicle bus to request engine 0% torque limit control, that is, the engine is required to output 0% torque. At this time, the engine only keeps the speed stable through idle speed control. AMT utilizes the ability of the engine's idle speed control to output high torque combined with the clutch to drive the vehicle to start. During this process, the engine idle speed control can respond in time according to the engine speed change to ensure a stable idle speed and prevent the engine from stalling. AMT utilizes the idle speed control c...

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PUM

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Abstract

The invention relates to an engine idle speed control-based AMT (Automated Mechanical Transmission) vehicle start control method, which comprises the following steps of: a, starting an engine, shifting to a start gear, controlling the engine to maintain an idle speed state by an electric control AMT, gently stamping a throttle to send out a starting signal; b, after receiving the starting signal, controlling a power source to drive a clutch to a semi-combined point; c, controlling an engine speed to be in a range of 650-1300 rpm by the electric control AMT, and detecting whether the ROTATING speed of an output shaft is more than 50 rpm or not; d, controlling the torque limit value of the engine to BE increaseD from 40% to 100% progressively by the electric control AMT and controlling the power source to drive the clutch to gradually combine, detecting whether the clutch sliding rate is less than 5% or not and whether the rotating speed of the output shaft is more than 120 rpm or not; and e, stopping controlling the engine by the electric control AMT, and ending a vehicle start process. The engine idle speed-control based AMT vehicle start control method has the beneficial effects of reducing abrasion of the clutch, increasing the comfort and economy as much as possible on the premise of maintaining dynamic property, and the like.

Description

technical field [0001] The invention relates to the technical field of vehicle electronic control, in particular to an AMT vehicle starting control method based on engine idle speed control. Background technique [0002] The heavy-duty vehicle AMT system needs to control the engine during the starting process of the vehicle to adjust the output torque or speed of the engine, so that the AMT can reduce the power impact and clutch wear when starting, and improve the comfort and comfort of the vehicle as much as possible while maintaining the power. economy. [0003] At present, the AMT starting method of domestic heavy-duty commercial vehicles focuses on adjusting the opening value of the accelerator pedal. For drivers who lack driving experience, it is often difficult to achieve a comfortable and steady starting process by adjusting the opening value of the accelerator pedal. Contents of the invention [0004] In order to solve the above technical deficiencies, the presen...

Claims

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Application Information

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IPC IPC(8): B60W10/04B60W10/10B60W30/00
Inventor 郭鹏赵玉超田磊
Owner SINO TRUK JINAN POWER
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