Basic structure of electronic throttle

The speed sensor can also be replaced by a crankshaft position sensor or a camshaft position sensor; The throttle actuator is a servo motor, which pushes the throttle to control the opening of the throttle; The structure and working principle of the accelerator pedal position sensor are the same as those of the accelerator pedal position sensor. The throttle electronic control unit is usually manufactured together with the engine electronic control unit. The working principle of the electronic throttle control system is shown in the above figure. The accelerator pedal position sensor [6] transmits the information that the driver needs to accelerate or decelerate to the throttle electronic control unit [10], the ECU calculates the corresponding optimal throttle position according to the obtained information, and sends a control signal to the throttle actuator (4), and the throttle actuator drives the throttle to the calculated optimal throttle opening position. By communicating with other electronic control units, such as engine electronic control unit, automatic transmission electronic control unit, etc. ), the ECU constantly corrects the optimal position of the throttle according to the information of the throttle position sensor (3), the signal of the engine speed sensor (2) and the information of the vehicle speed sensor (7), so that the opening of the throttle reaches the ideal position required by the driver.