| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of particulate substance even in the case of temporarily making an air fuel ratio rich for restoring cleaning ability of an exhaust gas cleaning device. SOLUTION: An engine 10 has a fuel injection valve 19 directly injecting fuel into a cylinder and has a catalyst 31 having oxygen absorbing ability in an exhaust pipe 24. An ECU 40 controls injection valve fuel pressure being pressure of fuel fed to the fuel injection valve 19 basically based on engine operating condition of every time as fuel pressure control. Further, the ECU 40 executes richening control (catalyst neutralizing control) in which air fuel ratio is temporarily controlled in a rich side when canceling fuel cut when a predetermined canceling condition is established while executing the fuel cut. Here, the injection valve fuel pressure is controlled by a higher fuel pressure than the injection valve fuel pressure in the case of controlling based on the engine operating condition after canceling the fuel cut. COPYRIGHT: (C)2013,JPO&INPIT |
