| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent deterioration of exhaust emission nature at a time of start pressure reduction control by an intake valve control represented by VVT (Variable Valve Timing) in an internal combustion engine provided with a fuel injection system injecting fuel directly in a cylinder. <P>SOLUTION: In an engine 5 provided with an injector 50 for cylinder injection, valve timing of an intake valve 80 is delayed by VVT control by an engine ECU 300 at a time of engine start and pressure in the combustion chamber 30 is reduced. In a structure phasedly advancing valve timing of the intake valve 80 from an initial set value, fuel injection from the injector 50 for cylinder injection is prohibited while the advanced angles is a predetermined reference value or less, and fuel injection from the injector 50 for cylinder injection is permitted after the same exceeds the predetermined reference value. Consequently, deterioration of exhaust emission nature accompanying start pressure reduction control can be suppressed. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
