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Stop control method and device of hybrid power vehicle engine

A technology of hybrid electric vehicles and control methods, which is applied to hybrid electric vehicles, control devices, motor vehicles, etc., can solve problems such as abnormal noise of the entire vehicle, and achieve the effect of avoiding abnormal noise of the entire vehicle

Inactive Publication Date: 2018-04-03
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method and device for controlling engine shutdown of a hybrid electric vehicle, which are used to overcome the defects of the prior art and solve the problem of abnormal noise of the whole vehicle during engine shutdown

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  • Stop control method and device of hybrid power vehicle engine
  • Stop control method and device of hybrid power vehicle engine
  • Stop control method and device of hybrid power vehicle engine

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Embodiment Construction

[0016] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Embodiments of hybrid vehicle engine shutdown control method of the present invention:

[0018] Such as figure 1 Shown, what the hybrid electric vehicle of the present invention applies is a kind of dual-motor hybrid power drive system with gearbox, comprises engine 1, ISG motor 13, main drive motor 7 and the planetary gear that is connected between generator and drive motor institutions such as figure 1 shown. The planetary gear mechanism mainly includes two sun gears, two output shafts and a planet carrier 5 . The engine 1 is connected to the driving end gear 3 through the torsional shock absorber 2, and the driving end gear 3 is connected to the planetary carrier 5 through the driven end gear 4, so as to output power to the planetary gear mechanism; the sun gear 6 passes through the output shaft 9 is connected to the main dri...

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PUM

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Abstract

The invention relates to a stop control method and device of hybrid power vehicle engine. When an engine stops, the anti-torque of an ISG motor is exerted on the engine, the rotating speed of the ISGmotor is detected in real time, when the current rotating speed of the ISG motor is smaller than a set target rotating speed of the ISG motor, the anti-torque of the ISG motor is removed, the engine stop closed-loop control is realized, the whole-vehicle abnormal sound caused when the anti-torque is removed too early is avoided, and the engine reverse rotation problem caused when the anti-torque is removed too late is also avoided.

Description

technical field [0001] The invention relates to a control method and device for engine shutdown of a hybrid electric vehicle, belonging to the technical field of hybrid electric vehicles. Background technique [0002] A hybrid vehicle is defined as a vehicle that has at least one accumulator, energy source or energy converter to provide electrical energy. During the operation of a hybrid vehicle, it is hoped that the engine will work in a higher efficiency zone. At this time, the engine needs to be started and stopped frequently. [0003] In the prior art, the following methods of stopping the engine of the single-shaft dual-motor hybrid system are commonly used: [0004] Such as figure 2 As shown, the ISG motor applies reaction torque to the engine. When the engine is dragged back to a set lower speed, generally 300rpm, the reaction torque applied by the ISG motor is cancelled. The disadvantage of this method is that the speed detection is very inaccurate when the engine ...

Claims

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Application Information

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IPC IPC(8): B60W20/40B60W30/192B60W10/08B60K17/08
CPCB60K17/08B60W10/08B60W20/40B60W30/192
Inventor 靳超柳建新刘朝辉宋瑞芳李建锋
Owner ZHENGZHOU YUTONG BUS CO LTD