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Electronic throttle is an important control part of automobile engine. It consists of engine, speed sensor, throttle and so on. The electronic throttle control system can accurately control the throttle opening.
The basic structure of the electronic throttle system consists of the following parts: 1, engine 2, speed sensor 3, throttle position sensor 4, throttle actuator 5, throttle 6, throttle pedal position sensor 7, speed sensor 8, transmission 9, throttle pedal 10 and throttle electronic control unit (ECU).
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⑴ The biggest advantage of the electronic throttle control system is that it can achieve the best torque output in the whole range of the engine.
⑵ 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.
⑶ The emission performance of the engine is improved.
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. 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, one sensor can make the system run normally, but the redundant design can make two sensors detect each other and identify one sensor in time when it fails.
To a great extent, it increases the reliability of the system and ensures the safety of driving.