What is the composition of the engine electronic control system?

As far as the overall structure is concerned, the engine electronic control system consists of sensors, electronic control units (ECU) and actuators.

The sensors of Santana 2000GSi and 3000 car engine electronic control system include air flow sensor, crankshaft position sensor, camshaft position sensor, idle throttle position sensor and throttle position sensor (two sensors are integrated in throttle control module J338), coolant temperature sensor, air temperature sensor, oxygen sensor, knock sensor and vehicle speed sensor.

Engine electronic control unit (ECU) not only receives the signals transmitted by the above sensors, but also receives the signals of ignition start switch, air conditioner switch, idle switch F60, power supply voltage and neutral safety switch (for cars equipped with automatic transmission), so as to judge the running state of the car and take corresponding control measures.

The actuating mechanism of Santana 2000GSi and 3000 car engine electronic control system includes electric fuel pump, electromagnetic injector, idle speed control motor (in throttle control module J338), activated carbon canister solenoid valve, ignition controller and ignition coil.

Different actuators on the engine perform different control functions. An actuator and several sensors in the engine electronic control system are combined into a subsystem, and some subsystems have multiple control functions at the same time. These subsystems include fuel injection control system, microcomputer-controlled ignition system, air-fuel ratio feedback control system, idle speed control system, fuel vapor recovery system, engine knock control system, overspeed fuel cut-off control system, deceleration fuel cut-off control system, overflow gap control system and fault self-diagnosis system.