CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE WITH SUPERCHARGER

摘要

The invention pertains to a control device of an internal combustion engine with a supercharger and the purpose of this invention is to suppress excessive increases in ignition required voltage and improve fuel consumption when the fuel supply is cut in order to suppress continuous abnormal combustion in a supercharging area. For each cylinder the control device of an internal combustion engine with a supercharger comprises a fuel supply means for supplying fuel into the cylinder and an ignition plug. A basic ignition timing at which a spark is generated by the ignition plug is set according to the operating state of the internal combustion engine. An abnormal combustion cylinder in which abnormal combustion occurs in the supercharging area is detected in each cycle. A fuel cut for stopping the fuel supply from the fuel supply means is performed for the abnormal combustion cylinder. For the abnormal combustion cylinder during several cycles after the fuel cut is initiated the ignition timing is varied so as to increase the crank angle width between compression top dead center and the basic ignition timing. After the several cycles have elapsed an ignition cut is performed for preventing the spark from being generated by the ignition plug.