发动机爆燃是一种危害较大的非正常燃烧,引起发动机功率下降,燃油消耗增加,严重时会导致发动机气缸内机件损坏。为了解决这一问题,在现代汽车发动机的电控系统中广泛采用带反馈控制的电子点火提前角控制系统,该系统使用爆震传感器来检测发动机有无爆燃现象,并将检测信号输送给发动机ECU,发动机ECU根据该信号改 Engine deflagration is a more harmful non-normal combustion, causing the engine power decline, fuel consumption increases, serious engine cylinder parts will cause damage. In order to solve this problem, electronic ignition timing control system with feedback control is widely used in the electronic control system of modern automobile engine. The system uses the knock sensor to detect the presence or absence of detonation of the engine and sends the detection signal to the engine ECU , The engine ECU changes according to the signal