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Method and system for engine start-stop control of dual-motor extended-range drive hybrid electric vehicle

A hybrid vehicle, start-stop control technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., to achieve fast and smooth switching, accurate start-stop control, and strong robustness.

Active Publication Date: 2021-06-15
高晓杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method and system for controlling the engine start and stop of a dual-motor extended-range drive hybrid electric vehicle, which solves the above-mentioned problems existing in the existing engine start and stop control

Method used

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  • Method and system for engine start-stop control of dual-motor extended-range drive hybrid electric vehicle
  • Method and system for engine start-stop control of dual-motor extended-range drive hybrid electric vehicle
  • Method and system for engine start-stop control of dual-motor extended-range drive hybrid electric vehicle

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0039] Such as figure 1 As shown, the dual-motor extended-range drive hybrid power system includes a vehicle controller HCU, an engine, an engine controller ECU, a first motor M1, a second motor M2, a first motor controller MCU1, a second motor controller MCU2, a series Parallel transmission assembly and transmission controller TCU.

[0040] The engine controller ECU, the first motor controller MCU1, the second motor controller MCU2 and the gearbox controller TCU are all connected to the vehicle controller HCU, the engine controller ECU controls the engine, the first motor controller MCU1 and the second motor control MCU2 respectively controls the first motor and the second motor, wherein the ...

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Abstract

The invention discloses a start-stop control method for an engine of a dual-motor extended-range drive hybrid electric vehicle, which includes a start-up control method: in response to satisfying the start-up condition of the engine, a start-up command is sent to the engine, and a drag command for dragging the engine to rotate is sent to the ISG; Detect the engine speed, and in response to the engine speed being greater than the speed threshold A, send an instruction to allow fuel injection to the engine; in response to detecting engine fuel injection, send an unload command to the ISG to unload the drag torque; in response to the engine running normally after the drag torque is unloaded , it is considered that the startup is successful; the shutdown control method: in response to the engine shutdown condition being met, a shutdown command is sent to the engine; after a period of time, in response to detecting that the engine speed is less than the speed threshold B, it is considered that the shutdown is successful. At the same time, the corresponding system is disclosed. The invention enables accurate and rapid engine start-stop control, can ensure fast and smooth switching of the hybrid power mode, and has strong robustness.

Description

technical field [0001] The invention relates to a method and system for controlling the engine start and stop of a dual-motor range-extending drive hybrid electric vehicle, and belongs to the field of electric vehicles. Background technique [0002] At present, the characteristics of energy saving, environmental protection, mature technology and relatively low cost of hybrid electric vehicles will make them one of the preferred solutions to replace traditional vehicles in the near future. Major domestic car companies are also actively launching hybrid vehicles with different structures, and the sales of hybrid vehicles are in a stage of rapid growth. Dual-motor range-extended drive hybrid vehicles have the characteristics of both hybrid vehicles and pure electric vehicles. In order to ensure the economical and dynamic advantages of the system vehicle, the hybrid mode switching needs to be as fast and smooth as possible. As a hybrid mode One of the steps in switching, engine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/02B60W20/00
CPCB60W10/02B60W10/06B60W20/00
Inventor 高晓杰孙永正马网俊
Owner 高晓杰
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