Throttle valve diagnosis method and device and storage medium

Abstract

The invention provides a throttle valve diagnosis method and device and a storage medium, and the method comprises the steps: obtaining a preset opening value of a throttle valve in response to a diagnosis instruction sent by a user; driving the throttle valve to be opened according to the preset opening value; obtaining the actual opening value of the throttle valve; if the actual opening degreevalue of the throttle valve meets the preset condition, calculating the actual opening duration used when the actual opening degree value of the throttle valve meets the preset condition; depending onthe actual opening duration, judging whether the throttle valve is abnormal or not; and when the opening and closing of the throttle valve are actively controlled, accurately controlling the openingdegree of the throttle valve, so that the accurate time change in the opening process of the throttle valve is obtained, and through the change of the time in the opening process of the throttle valve, the change of the operating state of the throttle valve can be found under the condition that the throttle valve does not have serious faults, the early diagnosis of throttle valve faults is realized, the diagnosis accuracy and timeliness of the throttle valve are improved, the engine performance is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a throttle valve diagnosis method, device and storage medium. Background technique [0002] As the core component of the engine intake system, the throttle valve is mainly used in gasoline engines and natural gas engines. Its main function is to control the flow rate of air or mixed gas into the engine, thereby affecting the relevant performance indicators of the engine. As the throttle valve is used longer, problems such as spring aging, sticking, drive motor failure, and mechanical failure of the throttle valve body will occur. If not found in time, it will further affect the performance indicators of the engine. [0003] At present, generally, an ECU (Electronic Control Unit, electronic control unit) is used to detect the operating state of the throttle valve, and according to the operating state of the throttle valve, it is judged whether there is a fault in the throttle valv...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a throttle valve diagnosis method, device and storage medium, which are used to solve the problem that the throttle valve fault diagnosis is not timely, and the throttle valve fault cannot be found early, which leads to the deterioration of engine performance

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