| 摘要 |
PROBLEM TO BE SOLVED: To avoid missing of fuel injection caused by that a calculated fuel injection timing is a value in an advanced side of a current crank angle during a predetermined period that a set interval of injection timing command value is shortened right after engine start. SOLUTION: Since set of injection timing command value is done with a short interval such as every 10°CA advancement during tentative establishment of crank angle right after engine start, injection timing command value is set in a variable range (BTDC 390°-10°) of fuel injection timing A calculated based on an engine operation state. During tentative establishment of the crank angle, if fuel injection timing A becomes a value in an advance side pf a value corresponding to the current crank angle, guard for advance side of the fuel injection timing A is performed by a guard value G set to a value corresponding to the current crank angle. The guard value G becomes a new fuel injection timing A. Then the fuel injection timing A is set as injection timing command value and fuel injection is performed immediately based on the command value. COPYRIGHT: (C)2005,JPO&NCIPI
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