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Method and system of clutch control for hybrid electric vehicle

A hybrid vehicle, clutch control technology, applied in hybrid vehicles, motor vehicles, power units, etc., can solve the problems of frequent opening and closing of the clutch, constant changes in the release and depression of the accelerator pedal, etc., to reduce wear, ensure The effect of braking safety and improving service life

Inactive Publication Date: 2013-01-02
BEIQI FOTON MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to provide a hybrid electric vehicle clutch control method and system to solve the problem of frequent opening and closing of the clutch due to the constant change of accelerator pedal release and depression

Method used

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  • Method and system of clutch control for hybrid electric vehicle
  • Method and system of clutch control for hybrid electric vehicle

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] figure 1 Shows the principle structure of the preferred embodiment of the clutch control system of the hybrid electric vehicle of the present invention, the preferred embodiment is applicable to the parallel and parallel hybrid electric vehicles equipped with the clutch, which is located in the vehicle control unit of the hybrid electric vehicle 7, the power and transmission system of the hybrid electric vehicle includes an engine (engine) 1, a clutch (clutch) 2, a motor (including a generator and a motor) (motor) 3, a power battery 31, an automatic mechanical transmission ( automatic mechanical transmission (abbreviated as AMT) 4, final drive 5, differential 6; the control system of power and transmission system includes engine control unit (Engine Control Unit, referred to as ECU) 71, electric clutch control unit (Electric Cl...

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Abstract

The invention provides a method and a system of clutch control for a hybrid electric vehicle. The method includes the steps of detecting signals of an accelerator pedal of a hybrid electric vehicle, and determining whether the accelerator pedal is released or not; calculating delay time of the released accelerator pedal, comparing the delay time with a set time, and continuing calculating the delay time and comparing the delay time with the set time if the delay time is smaller than the set time and occurrence of no brake signal is confirmed; executing subsequent steps if the delay time is smaller than the set time and brake signals occur, or the delay time is the same as the set time; and starting a clutch of the hybrid electric vehicle to charge a power battery. The hybrid electric vehicle with the system is adaptive to road conditions which require constant change of release and step-down of the accelerator pedal. Therefore, the hybrid electric vehicle can be prevented from frequent opening and closure of the clutch, wear of the clutch is reduced, and the service life of the clutch is prolonged effectively.

Description

technical field [0001] The invention relates to a control method and system for a hybrid electric vehicle, in particular to a clutch control method and system for a hybrid electric vehicle, and belongs to the technical field of hybrid electric vehicles. Background technique [0002] At present, when a hybrid vehicle is running, if the driver releases the accelerator pedal, the clutch will perform the disengagement action to prepare for the recovery of braking energy. However, during actual driving, especially on high-speed roads, if the driver needs to release the accelerator pedal according to the traffic conditions on the road, and the clutch is disengaged at this time, if the driver finds that he is at a safe distance from the vehicle in front in a short time, the driver will The accelerator pedal will be stepped on again, and the clutch will be combined at this time, which will cause frequent opening and closing of the clutch. This will lead to accelerated wear of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/38B60W10/02B60W10/26B60W20/00
Inventor 孟涛王婷邹海斌韩斌段艳晓王轶
Owner BEIQI FOTON MOTOR CO LTD
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