CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PURPOSE:To generate the maximum torque with little fuel at the high-load stationary time by providing a knock-MBT control means by the ignition control and a knock control means by the air fuel ratio and selectively using them in response to the judgment result on whether they are under the preset control conditions. CONSTITUTION:The knock-MBT control is performed by a control means 4 based on the ignition timing feedback quantity obtained from the deviation between the knocking strength obtained from the output of a knocking sensor 1 and its target value or the deviation between the MBT correlation quantity detected by a detecting means 3 and its target value and the learning value on the ignition timing with the air fuel ratio kept constant. The knock control is performed by a control means 6 based on the feedback quantity of the air fuel ratio obtained from the knocking strength deviation and the learning value on the air fuel ratio with the ignition timing kept constant. The control means 4, 6 are switched according to the output of a judging means 10 judging whether they are under the control conditions or not at the high-load stationary time.