CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

A control apparatus for an internal combustion engine is provided, which is capable of suppressing deterioration of exhaust emission due to an unburned fuel contained in oil which enters a combustion chamber during valve stop control while preventing inflow of fresh air to a catalyst, at a time of valve return following return from fuel cut. Variable valve operating apparatuses (34, 36) having valve stop mechanisms capable of changing operation states of an intake valve (30) and an exhaust valve (32) between valve operation states and valve closed and stopped states are included. Valve stop control that changes the operation states of the intake valve (30) and the exhaust valve (32) to the valve closed and stopped states is performed, at a time of execution of the fuel cut. When a return request from the fuel cut with the valve stop control is detected, a fuel is supplied to a combustion chamber (14) before the operation state of the exhaust valve (32) is returned to the valve operation state. The fuel supply amount in this case is corrected in accordance with an amount of the unburned fuel contained in the oil which enters into the combustion chamber (14) from a crank chamber (16) side during the fuel cut with the valve stop control.