Guangzhou Automobile Group Co., Ltd.

Zhenxiao Bai

Jujiang Liu

Xuetong Lian

Qingpeng Su

Jiao Zeng

Yanju Qiao

The present disclosure relates to a thermostat fault diagnosis method. The method includes: a current environment temperature and a boundary temperature and initial opening temperature corresponding to the current environment temperature are acquired; engine thermal equilibrium state data determined based on coolant temperature change data in an engine are acquired; a current coolant temperature is acquired; and according to the engine thermal equilibrium state data and a relationship between the current coolant temperature and the boundary temperature and initial opening temperature, it is judged whether a thermostat is faulty.

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Guangdong, China

Zhenxiao Bai