Hybrid electric vehicle motor torque output path switching control method

Abstract

The invention discloses a hybrid electric vehicle motor torque output path switching control method. The method comprises the steps that the initial path state of a motor torque output path is obtained; acquiring the initial speed of the vehicle; acquiring the opening degree of a brake pedal; acquiring an initial accelerator pedal opening degree; acquiring an initial charge state of a vehicle battery; if the initial path state is an ISG path, the initial charge state is smaller than a first preset value, the initial vehicle speed is smaller than a second preset value, and the initial accelerator pedal opening degree is larger than a third preset value, the motor torque output path is controlled to be converted into an EFAD path from the ISG path; and if the initial path state is an EFAD path, the initial charge state is smaller than a first preset value, the opening degree of a brake pedal is larger than a fourth preset value, and the initial vehicle speed is larger than a fifth preset value, the motor torque output path is controlled to be converted into an ISG path from the EFAD path.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a control method for switching a motor torque output path of a hybrid electric vehicle. Background technique [0002] With the increasingly stringent national regulations on fuel consumption and emission requirements, as well as the development of electrification systems, hybrid technology is the key to energy saving and emission reduction. In order to adapt to national policies and meet emission regulations, both OEMs and parts suppliers are looking for solutions. However, the battery technology of the current pure electric vehicle technology system is complex and the cost is high. The structure of the hybrid system determines the types of work modes that can be realized. Therefore, in order to achieve multiple work modes, the hybrid system usually has a relatively complex structure. This complex structure causes the hybrid system to occupy a relatively large space, which greatly...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem of being unable to switch between the ISG path and the EFAD path in the prior art, the present invention proposes a control method for switching the motor torque output path of a hybrid electric vehicle. The present invention is specifically implemented by the following technical scheme

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