Torque limiting function of Chang 'an cs75 electronic throttle safety monitoring

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

Engine introduction

And 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.

The effect is that there will be a throttle lag when the car starts. Automatic start needs to provide rich mixture, and ECU will analyze it according to the current vehicle speed and throttle opening. From the point of view of fuel economy and reasonable emission, the opening range of throttle and fuel injection system will be limited to supply rich mixture. In fact, ECU limits the instantaneous output power of the engine, thus limiting the realization of the requirement of rich mixture for automatic start.