ATM-based vehicle hill starting control method and device

A slope start and control method technology, which is applied in the direction of transmission control, toothed components, belts/chains/gears, etc., can solve problems such as immature AMT technology, vehicle slippage, engine flameout, etc.

Active Publication Date: 2019-05-28
WEICHAI POWER CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] At present, some domestic high-end commercial vehicles use automatic mechanical transmission (Automated Mechanical Transmission, hereinafter referred to as AMT). However, due to the immature AMT technology, if the clutch is not well controlle

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  • ATM-based vehicle hill starting control method and device
  • ATM-based vehicle hill starting control method and device
  • ATM-based vehicle hill starting control method and device

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] The present application provides a highly safe AMT-based vehicle hill start control method, see figure 1 , methods include:

[0049] Step S101: When the climbing command is obtained, the clutch is controlled to be engaged from the completely disengaged state to the position where the idle travel is eliminated, and the position where the idle travel is eliminated refers to that the clutch starts to engage from the complete disengagement point, but the ma...

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Abstract

The invention provides an ATM-based vehicle hill starting control method and device. The method comprises the steps of controlling a clutch to be engaged from a completely disengagement state to an idle stroke elimination position; controlling the clutch to be engaged continuously to get into the sliding friction stage at the first speed when a vehicle starts hill starting; controlling the clutchto be engaged continuously at the second speed when a hand brake of the vehicle is released, and controlling a second timer to start timing; detecting that the difference between the rotating speed ofan engine and the rotating speed of an input shaft is less than a preset rotating speed difference value when the timing duration of the second timer reaches the second preset threshold value, and controlling the clutch to be completely engaged at the third speed when the rotating speed of the engine is greater than the first preset threshold value so as to control the clutch to go to the synchronous stage; and controlling a TCU to release control power of the engine when the clutch is completely engaged and the rotating speed of the engine is greater than the second preset rotating speed toenable the vehicle to get into a normal driving mode and realize stable and safe hill starting of the vehicle.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an AMT-based method and device for controlling vehicle hill start. Background technique [0002] At present, some domestic high-end commercial vehicles use automatic mechanical transmission (Automated Mechanical Transmission, hereinafter referred to as AMT). However, due to the immature AMT technology, if the clutch is not well controlled during the hill start process, it is easy to cause the vehicle to slide down the slope during the start process. And engine flameout, have a strong impact on vehicle safety, have a strong impact on the safety and comfort of vehicle driving. Contents of the invention [0003] In view of this, an embodiment of the present invention provides an AMT-based vehicle hill start control method and device, so as to realize AMT-based vehicle hill start safety. [0004] In order to achieve the above purpose, embodiments of the present invention provi...

Claims

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Application Information

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IPC IPC(8): F16H61/04F16H61/08F16H59/54F16H59/46
Inventor 李永昌王飞王菁李丕茂葛兆凤
Owner WEICHAI POWER CO LTD
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