| 摘要 |
PROBLEM TO BE SOLVED: To suppress deterioration of emission.SOLUTION: When fuel amount is not increased, if air-fuel ratio learning during direct-injection is not completed, fuel injection from a port fuel injection valve is stopped without performing EGR, fuel injection control is executed so that fuel is injected only from a cylinder fuel injection valve, and the air-fuel ratio learning during direct-injection is executed (Steps S110, S130). When fuel amount is increased, fuel injection from the port fuel injection valve is stopped without performing EGR and air-fuel ratio feedback control and an engine and an EGR valve are controlled so that fuel injection is performed only from the cylinder fuel injection valve (Steps S110 S120). Thus, this more appropriately enables the air-fuel ratio learning during direct-injection, and can suppress deterioration of emission during fuel injection only from the cylinder fuel injection valve when fuel amount is increased. |
