CONTROLLER OF INTERNAL COMBUSTION ENGINE

摘要

A control device for an internal combustion engine is provided, which can prevent occurrence of torque shock accompanying cancellation of fuel cut in an internal combustion engine in which a throttle can be operated during implementation of the fuel cut. The control device includes means which controls fuel injection by a fuel injection device, and means which controls the throttle. The fuel injection control means sequentially restarts fuel injection for each cylinder in accordance with an ignition sequence among cylinders when cancellation conditions of fuel cut are satisfied during implementation of the fuel cut. Meanwhile, the throttle control means firstly controls the throttle to a closing side when the cancellation conditions of fuel cut are satisfied. The throttle is controlled to the closing side, whereby the air amount in the intake pipe is decreased, and the air amount in a cylinder which is the basis of calculation of a fuel injection amount is also decreased. The throttle control means executes the operation until the air amount in a cylinder is determined in the first cylinder in which the fuel injection is restarted. Thereby, the torque which is generated by the first combustion after return from the fuel cut can be suppressed to be low. Next, the throttle control means controls the throttle to an opening side in accordance with the target air amount in a cylinder which is determined from a required torque after combustion is performed once or a plurality of times. Thereby, the air amount in a cylinder can be increased to achievement of the required torque from the torque directly after the restart of combustion which is suppressed to be low.