Electrically Controlled Gasoline Injection Engine Oil, Gas Path Fault Detection And Diagnosis

This paper explounds the composition, work-principle and the application prospects of the electronic-controll engine . It analyses the present situation and the problem in fields of vehicle maintenance. The important parts are influence of the air system leaking to the engine and changeable pressure of the fuel to the engine. At the same time ,the paper introduces the structure and the principle of some sensors and actuators in air system and fuel system. Especially about the Air Flow Sensor including the kinds, the composition , the work-principle and the way about examination and diagnose.