CONTROL DEVICE OF ENGINE

摘要

PROBLEM TO BE SOLVED: To improve reliability of an exhaust sensor by suppressing sudden degradation of responsiveness of the exhaust sensor caused by adhesion of PM, in a control device of an engine including the exhaust sensor.SOLUTION: A control device of an engine includes an A/F sensor detecting an air fuel ratio of an exhaust gas in an exhaust passage. An adhesion amount of PM to the A/F sensor is estimated on the basis of conditions of the engine including an engine speed ne and an intake air amount Ga. When the estimated total adhesion amount C of PM is a prescribed adhesion amountαor more, PM elimination control for eliminating PM adhered to the A/F sensor is started.