Heavy duty vehicle AMT engine and clutch self-adaption coordination control method

A Technology of Coordinated Control and Clutch

Active Publication Date: 2019-08-23
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This invention only learns the position of the critical point, and does not take into account the knot and shock absorption of the clutch

Method used

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  • Heavy duty vehicle AMT engine and clutch self-adaption coordination control method
  • Heavy duty vehicle AMT engine and clutch self-adaption coordination control method
  • Heavy duty vehicle AMT engine and clutch self-adaption coordination control method

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Experimental program
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Embodiment 1

[0029] see Figure 1 to Figure 3 , a heavy-duty vehicle AMT engine and clutch adaptive coordinated control method, the coordinated control method includes the following steps:

[0030] Step 1: In the Roll off stage, before the gear is removed, the engine reduces torque and then controls the clutch to open. The gearbox sends a speed torque limit request to the engine through a TSC1 message, and sends a specific engine torque request value. The torque request value is based on the quality, ramp Obtained by looking up the table, the rate of change of the engine torque and the separation rate of the clutch are corrected according to the mass, ramp, and throttle parameters, and the correction amount is obtained by looking up the table according to the mass, ramp, and throttle parameters;

[0031]Clutch opening time self-learning: record the time from the start of clutch action in the Roll off phase to the end of Roll off, and judge with the original value of EEPROM after subtractin...

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PUM

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Abstract

The invention relates to a heavy duty vehicle AMT engine and clutch self-adaption coordination control method. The heavy duty vehicle AMT engine and clutch self-adaption coordination control method comprises the following steps of firstly, the Roll off stage, wherein an engine is subjected to torque decreasing before a gear is disengaged, and then a clutch is controlled to be opened; secondly, theSpeed Contral stage, wherein the engine is subjected to speed regulation to the target rotating speed; and thirdly, the Roll On stage, wherein the clutch is engaged, after the rotating speed of the engine and the rotating speed of the clutch are synchronized, the torque of the engine is restored. The design can adaptively learn the clutch separation time and ensure the vehicle smoothness and thedynamic property.

Description

technical field [0001] The invention relates to a heavy-duty vehicle AMT engine and a clutch adaptive coordination control method, which is particularly suitable for reducing the vibration of the clutch combination. Background technique [0002] The coordinated control of the engine and the clutch during the shifting process is directly related to the quality of the shifting, which may lead to shifting failure in severe cases. Affected by the characteristics of the engine itself, different engines often have different torque recovery and reduction performances. Even for the same engine, the calibrated torque performance will vary greatly due to demand. For clutches, when the working environment changes, such as temperature changes, or when the clutch wears out, its torque transmission characteristics will change. In addition, due to the existence of machining errors and the tolerance of the valve diameter, the current clutch opening time is inconsistent on different vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/02F16H61/02F16H59/14F16D23/12F16D48/06
CPCF16D23/12F16D48/064F16D2500/1023F16D2500/106F16D2500/1107F16H59/0208F16H59/141F16H61/0204
Inventor 张彦康
Owner DONGFENG COMML VEHICLE CO LTD
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