| 摘要 |
PURPOSE:To prevent the occurrence of overdelay and overadvance of an ignition timing right after change, by a method wherein when the opening or closing state of a suction control valve is varied, control responding to the opening or closing state before change is continued for a given time as ignition timing control. CONSTITUTION:A suction control valve M3 mounted to the suction system of an internal combustion engine M1 is controlled by a means M4 based on a detecting result from a means M2 to detect the running state of the internal combustion engine M1. The ignition timing of the internal combustion engine M1 is controlled by a means M5 based on the opening and closing state of the suction control means M3. In this device, when the opening and closing state of the suction control means M3 is varied, control is made by a means 16 so that control responding to an opening and closing state before variation is continued as control of an ignition timing by means of the means M5 for a given time. This constitution prevents the occurrence of over delay and overadvance of an ignition timing due to a delay in the motion of the suction control means M3 right after variation and a transient delay in an intake air change. |
