What is the working principle of automobile electronic throttle?

Working principle of automobile electronic accelerator: the driver controls the accelerator pedal position sensor to generate corresponding voltage signal, which is input to the accelerator control unit. The control unit firstly filters the input signal to eliminate the influence of environmental noise, and then analyzes the driver's intention according to the current working mode, pedal movement and change rate. The following are the advantages of the electronic throttle: 1, achieving the best torque output in the whole range of the engine. 2. Accurately control the throttle opening. ECU first judges and processes various working condition information and sensor signals, then calculates the optimal throttle opening, and then the driving motor controls the throttle to reach the corresponding throttle opening. 3. Improve the emission performance of the engine. ETC system accurately controls the air-fuel ratio under various working conditions, which makes the combustion more complete and reduces the generation of waste gas.