An exhaust gas reducing apparatus and method for controlling the air-fuel ratio so that the air-fuel ratio is kept constant regardless of the opening state of the throttle valve

摘要

A throttle position sensor (TPS) which senses the opening angle of the throttle valve and outputs it as an electrical signal; A microcontroller 10 for detecting the rate of change of the throttle valve from the signal input from the throttle position sensor and correcting and outputting the fuel injection amount when the throttle valve is opened or closed suddenly; A memory 20 in which programs and various data are stored; An injector driving unit 30 for outputting an injector driving signal for injecting fuel according to a signal input from the microcontroller; And an injector 40 for injecting a fuel amount according to a signal input from the injector driving unit; The air-fuel ratio is compensated so that the air-fuel ratio can always be maintained even if the opening angle of the throttle valve is changed, so that the air-fuel ratio can be kept constant regardless of the opening state of the throttle valve The exhaust gas abatement device and its control method.