Throttle sensor structure

The structure of throttle sensor is that two contacts (or contacts) are connected with the throttle shaft. The contact can slide on the resistor, and the throttle position signal is converted into voltage VTA through the change of the resistor. When the throttle valve is completely closed, one contact is in contact with the idle contact id 1. IDL signal is used to cut off fuel and control ignition advance angle.

The throttle position sensor is also called throttle opening sensor or throttle switch. The main function is to detect whether the engine is in idle or load state, acceleration or deceleration state.

The throttle position sensor is installed on the throttle body and connected with the throttle. There is a sliding potentiometer in the throttle position sensor, and its sliding contact is driven by the throttle shaft.

When the throttle opening is different, the resistance of potentiometer is different. At this time, the throttle opening will be converted into a resistance or voltage signal and sent to the microcomputer. Through the microcomputer throttle position sensor, the analog signal representing the continuous change of all throttle opening from full open to full closed and the change rate of throttle opening can be obtained, so that the working condition of the engine can be judged more accurately and the adjustment accuracy and effect can be improved.

In order to accurately check the idle state signal, the integrated throttle position sensor has an idle contact. When the throttle valve is completely closed, the idle output contact is turned on and the sensor outputs an idle signal. At this time, ECU will instruct the fuel injector to increase the fuel injection quantity to enrich the mixture.