A method and device for vehicle hill start control based on amt

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...

AI Technical Summary

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 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, seriously affecting the safety of the vehicle, seriously affecting the safety and comfort of driving the vehicle

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