| 摘要 |
PROBLEM TO BE SOLVED: To provide a direct-injection engine utilizing an air flow in a cylinder 2 for stratifying a mixture, having improved ignition stability by avoiding trouble in stratifying the mixture resulting from a change in humidity, in particular. SOLUTION: The intake air flowing into the cylinder 2 of the engine 1 has a higher humidity than predetermined is detected in accordance with a signal from a humidity sensor 63 of an air-conditioner (Step S4, S5). In detection, fuel is injected two times by an injector 20 to weaken the degree of the stratification of the mixture in the cylinder 2 (Step S7, S8). At this time, a front stage injection timing is made faster as the humidity of the intake air is higher. The opening of a TSCV 32 is corrected to be wider in a high moisture state for making the flow rate of the intake air smaller (Step S9). COPYRIGHT: (C)2004,JPO
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