Idle motor is a component that controls the idle speed of a motor vehicle. When the engine is idling, it is called idle.
Its function is to:
When idling, the cross-sectional area of the idle air duct is changed according to the engine temperature and load, so that the engine has the optimal idle speed under different conditions.
The idle motor is mainly used to bear the idle speed of the car, and its purpose is to adjust the idle speed according to the engine load during idle. The idle stepper motor is installed on the throttle body and used by the engine controller to control the engine idle. When the engine speed deviates from idle, it is adjusted by the throttle valve to control the amount of air entering the intake manifold and mechanically operated by the accelerator pedal wire rope. The throttle body has a bypass air passage that provides air when the engine is idling (when the throttle is closed). The pivot of the automatic idle motor extends into the bypass air duct, regulating the air flow through it. The engine controller adjusts the engine idle speed by moving the pivot of the automatic idle motor into and out of the bypass air duct based on input signals from various sensors. When the ignition key is turned to the on position, the automatic idle motor starts working. This switch signal is input to the ECU to sense whether the engine is in idle condition. At the same time, the real-time position of the motor is fed back to the ECU by the motor position sensor.