In the engine electronic control system, the function of the throttle position sensor is mainly to convert the throttle opening and the speed of the throttle opening into electrical signals and input them to the engine CU, which are used to judge various working conditions of the engine, so as to control different engine operating conditions. Fuel injection quantity and ignition timing. On vehicles with electronically controlled automatic transmissions, the throttle position sensor signal is the primary signal for transmission shifts and torque converter lockup.
In the new intelligent pure sub-throttle control system, the throttle opening angle is no longer directly controlled by the accelerator pedal cable, but is driven by the throttle servo motor according to the CU signal. The throttle position sensor on the electronic throttle shaft is used to detect the actual opening of the throttle, and the ECU uses this as a feedback signal to control the throttle servo motor in real time and make appropriate adjustments to the throttle opening.
The throttle position sensor equipped with the traditional cable-controlled throttle valve is divided into a contact switch type, a sliding resistance type, and a comprehensive type integrating the idle speed switch and the sliding resistance according to the overall structure. There are two common types of throttle position sensors used in the new intelligent electronic throttle control system: double sliding resistance type and linear double Hall type.
