What is the principle of electronic throttle?

According to the driver's stepping on the accelerator, the electronic accelerator changes the opening of the accelerator through the change of voltage, and the vehicle using the electronic accelerator can control the fuel consumption more accurately.

1, the biggest advantage of electronic throttle control system is that it can achieve the best torque output of the engine in the whole range.

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. The emission performance of the engine is improved. Accurately control the air-fuel ratio under various working conditions to make the combustion more complete and reduce the generation of waste gas; At idle speed, the throttle valve is kept at a very small opening to stabilize combustion, which improves fuel economy and further controls emissions.

4. It has high vehicle running reliability. The electronic throttle control system is designed with redundant sensors. From the control point of view, the system can run normally with only one sensor, but the redundant design allows two sensors to detect each other and identify one sensor in time when it fails, which greatly increases the reliability of the system and ensures the safety of driving.

5. You can choose different working modes. Drivers can choose different working modes through mode switches according to different driving needs, and there are usually three modes: normal mode, power mode and snow mode. The difference is that the response speed of the accelerator to the accelerator pedal is different.

6. You can get altitude compensation. At high altitude, the atmospheric pressure drops, the air is thin, and the oxygen content drops, which leads to the decrease of engine output power. At this time, the electronic throttle control system can compensate the throttle opening according to the functional relationship between atmospheric pressure and altitude, so as to ensure that the relationship between engine output power and accelerator pedal position remains stable. (Photo/Text/Photo: Cao Bo) @20 19