The function of throttle position sensor

Various types of automotive throttle Shaft Position Sensor (Throttle Position Sensor, TPS) are mounted on the throttle shaft in the throttle body at one end, and its function is the throttle valve opening degree (i.e., the engine load) into an electrical signal input after size ECU , ECU according to the throttle position signal discriminating engine operating conditions, such as idling condition, part-load conditions, such as high load conditions, and according to different engine operating conditions on the concentration of the mixture needs to control fuel injection time. In the electronically controlled automatic transmission equipped with a car, TPS input signal in addition to the engine ECU, the transmission electronic control unit are also entered (ECT. ECU), for determining the transmission shift timing and the timing of the main converter lockup signal a.