Vehicle fault detection method and device, vehicle and storage medium

A technology for vehicle faults and detection methods, which is applied to vehicle components, brake transmissions, transportation and packaging, etc., can solve the problems of vacuum system fault detection defects, hidden dangers of vehicle driving safety, and inability to detect vacuum system faults, etc. Hidden dangers in driving safety and the effect of enhancing safety
CN110816508AActive Publication Date: 2020-02-21CHINA FIRST AUTOMOBILE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA FIRST AUTOMOBILE
Publication Date
2020-02-21

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Abstract

The embodiment of the invention discloses a vehicle fault detection method and device, a vehicle and a storage medium. The method comprises the following steps of obtaining a vacuum pump starting state, a braking pedal state, the vacuum pressure of a vacuum pump sensor and the environmental pressure of an environment sensor; according to the vacuum pump starting state and the braking pedal state,determining a preset pressure change tendency, and according to the vacuum pressure and the pressure change tendency, detecting the faults of the vacuum pump sensor; and when the vacuum pump sensor isunder a normal working state, obtaining pre-stored vacuum pump ultimate pressure, and according to the ultimate pressure and the environmental pressure, detecting the faults of the environment sensor. By use of the technical scheme of the embodiment of the invention, the fault of a vacuum system is detected when the voltage of the vacuum sensor is under a normal range, the fault detection accuracy of the vacuum pump system is improved, and vehicle driving safety can be enhanced.
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Description

technical field

[0001] The embodiments of the present invention relate to the technical field of automation control, and in particular to a vehicle fault detection method, device, vehicle and storage medium. Background technique

[0002] With the development of social economy, automobiles are gradually integrated into all aspects of life, but with the popularization of automobiles, unprecedented pressure is brought on the environment and energy. Therefore, electric vehicles and hybrid vehicles have become the current development trend recognized in the world. At present, electric vehicles use a vacuum pump to evacuate the brake system to provide power assistance. When the driver steps on the brake pedal, the pressure difference between the atmospheric pressure and the vacuum tank is used to provide brake boost. At the same time, the vacuum degree in the vacuum tank is reduced. When the vacuum is reduced to a certain level, the vacuum pump can be used to replenish the vacuum ...

Claims

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