Cairo electronic door is an important solar term control unit of automobile engine. In order to improve the dynamic performance, stability and economy of the vehicle, and reduce the pollution emission, the major automobile manufacturers in the world have launched a variety of electronic control with good properties and the corresponding solar term door of the electronic control system, an electronic solar term door control system (ETCS). Cairo said electronic electronic solar term door solar term door control system, throttle control by degrees, not only can improve fuel economy, reduce emissions, at the same time, the system response rapidly, can achieve satisfactory control performance; on the other hand, the integration of idle speed control, cruise control and vehicle stability control, simplified the structure of control system.