| 摘要 |
PROBLEM TO BE SOLVED: To enlarge a premixed compression ignition combustion area to a high load side by restraining increase of combustion noise caused by rise of an engine load. SOLUTION: Fuel ignition timing is retarded when a fuel injection amount is increased, and the fuel ignition timing is advanced when the fuel injection amount is decreased. When the fuel injection timing is retarded with respect to increase of the fuel injection amount, interference between fuel spray and a wall surface of a combustion chamber is minimized, and the air-fuel mixture in the combustion chamber becomes uneven, and thereby, the air-fuel mixture is cooled, and a temperature in a cylinder is lowered. As a result, the ignition timing is retarded, and increase of the combustion noise can be restrained. COPYRIGHT: (C)2008,JPO&INPIT
|
