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Gear shifting control method for hybrid electric vehicle

A hybrid vehicle and control method technology, applied in hybrid vehicles, motor vehicles, control devices, etc., can solve the problems of frequent shifting, energy loss, poor power output, etc., to avoid power loss, avoid poor power output, etc. smooth effect

Active Publication Date: 2022-05-03
DONGFENG PEUGEOT CITROEN AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: when the driving mode is switched, there has been a gear shift; or a short time in the future requires an upshift or downshift. If the current downshift or upshift is currently performed, then immediately upshift or downshift, Also caused frequent shifting
Too rapid shifting not only causes frequent shifting shocks, but also leads to poor power output and energy loss

Method used

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  • Gear shifting control method for hybrid electric vehicle
  • Gear shifting control method for hybrid electric vehicle

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Embodiment Construction

[0023] The following specific embodiments are used to further describe the technical solution of the claims of the present invention in detail, so that those skilled in the art can understand the claims more clearly. The protection scope of the present invention is not limited to the following specific examples. The protection scope of the present invention includes the technical solution of the claims of the present invention made by those skilled in the art and is different from the following specific embodiments.

[0024] Such as figure 1 As shown, a hybrid electric vehicle shift control method, comprising:

[0025] 1. Obtain the driving mode at the current moment and the vehicle operating parameters at the current moment. The driving modes include general mode, pure electric mode, sports mode and four-wheel drive mode. The shift curves are different in different driving modes. The vehicle operating parameters include the accelerator Pedal opening, brake pedal opening, ge...

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Abstract

The invention discloses a hybrid electric vehicle gear shifting control method which is characterized by comprising the steps that a driving mode at the current moment and vehicle operation parameters at the current moment are obtained; if the driving mode at the current moment has the gear shifting requirement and the interval duration of last gear shifting is smaller than the set interval duration, a gear shifting restraining mode is started, and the current gear is kept unchanged; and when the duration of the gear shifting restraining mode reaches a second set duration, or the difference between the target gear after the first set duration and the gear at the current moment is larger than or equal to the set gear difference, the gear shifting restraining mode is quitted, and gear shifting is permitted. According to the method, frequent gear shifting can be avoided within a short time after the driving modes are switched, and unsmooth power output and power loss are avoided.

Description

technical field [0001] The invention relates to the technical field of automobile shift control, in particular to a hybrid electric automobile shift control method. Background technique [0002] Modern vehicles will set different driving modes in higher configuration versions to meet the needs of different consumers for driving pleasure. For example, in the sports mode, in order to pursue a strong sense of power of the vehicle, the upshift or downshift curve of the vehicle will be different from the normal mode. In the electric mode, the shift curve is determined based on the torque output characteristics of the motor. [0003] When the vehicle is running, if the driver switches the driving mode, from sports mode to normal mode, or from normal mode to sports mode, the definition of the shift curve of the system will also switch accordingly. The downshift may correspond to different target gears, and the shift system will generate upshift or downshift requirements to match t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/30
CPCB60W20/30B60W2520/10B60W2520/105B60W2540/10B60W2540/12B60W2510/1005
Inventor 王建波
Owner DONGFENG PEUGEOT CITROEN AUTOMOBILE
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