| 摘要 |
A method for controlling direct fuel injection into an engine is detailed. The method comprises determining a quantity of fuel to inject into a combustion chamber during a combustion cycle, and, executing three fuel injection events during the combustion cycle. The first fuel injection event is initiated during a compression stroke immediately before top-dead-center point of piston travel. A first dwell time is substantially equal to a second dwell time. Quantities of fuel injected during each of the three fuel injection events are substantially equal. An aspect of the invention includes the first and second dwell times determined based upon emissions and engine thermal efficiency. The invention facilitates improved engine-out emissions, without substantial changes in engine or aftertreatment hardware. |
