The Electrical Throttle body system is designed to control spark-ignition engines. The ETB system is made of the components throttle body, accelerator pedal sensor and
electronic control unit. The throttle body contains the actuator, the throttle plate and the throttle position sensor, which are integrated in one housing. The actuator consists of a DC engine with a two-stage gear. The throttle position sensor is designed redundantly. In case of an electrical disconnection the throttle plate falls back into an idle default position located above the lower mechanical stop.