IDLING CONTROLLER OF INTER-CYLINDER INJECTION TYPE INTERNAL COMBUSTION ENGINE

摘要

PURPOSE:To decrease an idling rotational speed to a target rotational speed without generating any shock when an engine rotational speed is increased during idling operation. CONSTITUTION:A bypass passage 24 which bypasses an engine driven mechanical supercharger 19 is provided, and an air control valve 25 is provided inside the bypass passage 24. Fuel is injected toward the inside of a combustion chamber 4 from a fuel injection valve 14. The fuel injection quantity is decreased and also opening of the air control valve 25 is increased as an idling rotational speed becomes high during idling operation. When the fuel injection quantity becomes less than the allowable minimum injection quantity, the fuel injection quantity is maintained at the minimum injection quantity, so as to decrease the opening of the air control valve.