| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of bluish white smoke and deterioration of engine sound feeling in transition from a cold condition to a hot condition even if total demand injection quantity in relation to change of an operation condition decreases. SOLUTION: In this fuel injection control method for an internal combustion engine, an accumulator type fuel injection device capable of multiple stage injection is provided, and main injection F and at least one of sub injection of sub injection preceding the main injection F, in an embodiment, sub injection delayed from pilot injections P1, P2 or main injection F, post injection R for example, are performed. An engine operation condition discrimination sensor discriminating the engine operation condition cold or hot is provided. Fuel total injection quantity is increased not to make sub injection such as pilot injection P2 extinct by retarding timing of main injection in the hot condition than timing of main injection F in the cold condition when the operation condition discrimination sensor detects change from the cold condition to the hot condition. COPYRIGHT: (C)2007,JPO&INPIT
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