Principle of four throttle position sensor for diesel engine

The electronic throttle transmits the signals of the depth and speed of the accelerator pedal through the position sensor, and the ECU will receive and interpret these signals, and then send a control command to the throttle to open the angle it should open quickly or gently according to the command. This process is accurate and fast.

Compared with the traditional throttle, the obvious point of electronic throttle is that it can replace cable or pull rod with wire harness, install micro-motor on the throttle side, and drive the throttle opening with motor. The so-called "wire transmission" means replacing the original mechanical transmission mechanism with wire.

Electronic throttle control system is mainly composed of accelerator pedal, pedal displacement sensor, ECU, data bus, servo motor and throttle actuator. The displacement sensor is installed in the accelerator pedal to monitor the position of the accelerator pedal at any time. When it is detected that the height position of the accelerator pedal changes, the information will be sent to the ECU instantly. The ECU will calculate and process these information and data information from other systems to calculate a control signal, which will be sent to the servo motor relay through the line. The servo motor drives the accelerator actuator, and the data bus is responsible for the communication between the system ECU and other ECU. Because the electronic throttle system adjusts the throttle through ECU, various functions can be set to improve driving safety and comfort, among which traction control system and constant speed cruise are the most common.