| 摘要 |
PROBLEM TO BE SOLVED: To ensure a satisfactory combustion after returning intake synchronous injection to intake non-synchronous injection. SOLUTION: An engine is started while performing the intake non-synchronous injection (arrow X). When engine speed N is lower than a lower limit value NL, switching to intake synchronous injection is performed (arrow Z). When engine speed fluctuation NF becomes smaller than an allowable value NF1, and rotating speed deviation ND is smaller than an allowable value ND1, the injection is returned to the intake non-synchronous injection (arrow A). When the engine speed fluctuation NF is larger than the allowable value NF1, switching to intake synchronous injection is performed (arrow B). When a time tA passes after the start of air-fuel ratio correction, the injection is returned to the intake non-synchronous injection (arrow C). COPYRIGHT: (C)2004,JPO
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