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Transient control from driving to brake reducing for mixed-kinetic automobile

A technology of a hybrid vehicle and a control method, which is applied to the control of the power system of the hybrid vehicle, and the control field of the hybrid vehicle at the moment of transition from driving to braking and deceleration, can solve the problems of reducing the ride comfort of the whole vehicle, and achieve good overall performance. The effect of car ride comfort

Inactive Publication Date: 2007-01-17
FAW GROUP
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  • Summary
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  • Description
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AI Technical Summary

Problems solved by technology

However, at the moment when the vehicle changes from the engine-driven driving condition to the motor power generation and braking energy recovery condition, there will be a large change in driving / braking force, which will make the occupants in the vehicle shake back and forth, reducing the ride comfort of the vehicle

Method used

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  • Transient control from driving to brake reducing for mixed-kinetic automobile
  • Transient control from driving to brake reducing for mixed-kinetic automobile
  • Transient control from driving to brake reducing for mixed-kinetic automobile

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing:

[0012] As shown in Figure 1, 1a and 1b are two kinds of parallel hybrid electric vehicle power systems, which are composed of engine 1, clutch 2, motor 3, transmission 4, final reducer 5, wheels 6, and power battery 7; Figure 1a The motor 3 in the motor is connected with the transmission 4 and the final drive 5, and is located between the final drive 5 and the transmission 4; Figure 1b The motor 3 in the motor is connected with the speed changer 4 and the clutch 2, and is located between the clutch 2 and the speed changer.

[0013] Such as figure 2 As shown, the schematic diagram of the prior art of the torque change at the moment when the engine drives the driving mode to the motor power generation recovery braking energy mode, in the hybrid electric vehicle formed by the parallel hybrid system shown in Figure 1, in order to improve Energy recovery, when the accelerato...

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Abstract

A control method for the transition from driving to braking deceleration of the car with mixed power features that a control system consisting of master controller, motor and its controller, accumulator and its managing unit, and clutch and its controller is used, and after the clutch is separated in braking process, the drive of motor is controlled by master controller is such manner that after the drive torque is increased to maximum, it is gradually decreased to needed braking torque.

Description

technical field [0001] The invention relates to a control method for a power system of a hybrid electric vehicle, in particular to a control method for a hybrid electric vehicle at the moment of transition from driving to braking for deceleration, and is suitable for a hybrid electric vehicle with a parallel hybrid power system. Background technique [0002] With the increasingly prominent global environmental and energy issues, the development of new vehicles with low emissions and low fuel consumption has become the primary task of the development of the automotive industry today. Hybrid electric vehicle technology avoids the shortage of battery technology and energy infrastructure of pure electric vehicles. It is a good solution to current problems and has become a hot spot in international automotive research and development. [0003] It is one of the main ways for HEVs to save energy by using electric motors to generate electricity and recover braking energy. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/18
Inventor 唐志强陈树星于永坤朱彦文江国华市川耕司吉見秀和松下昌弘龍見哲治伊藤伸一大屋勝則荒川誠
Owner FAW GROUP
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