A Study on the Development of an Electronic Control System for Optimal Start and Idle Speed Control in Gasoline Engines

기솔린 기관에서 최적의 시동 및 공회전 속도제어를 위한 전자 제어장치 개발에 관한 연구

An electronic control system of the automobile engine for optimal start and idle speed control has been developed. This system employs the microcoputer-based electronic control unit and crank angle sensor for precise control on fuel injection, ignition timing, and idle speed more quickly and accurately at the start and idling. Consequently, the number of misfire can be reduced during been affected by air flow rate, idle quality(roughness), spark timing, fuel injection, water temperature, and load, Thus, this electronic control system strivers to reach the optimal idle operating point, defined the lowest idle speed(fuel economy) and idle quality(roughness), under any engine operating conditions.