| 摘要 |
PROBLEM TO BE SOLVED: To inhibit the sudden change of combustion noise and the torque causing the timer excess spark advance or the timer excess lag in switching control between a pilot control region a controlling the injection rate, and a non-pilot control region not controlling the injection rate. SOLUTION: In switching controlling from the non-pilot control region to the pilot control region, an SPV (solenoid valve for metering) is controlled to be closed and opened at a positioned advanced by a pre-stroke value corresponding to timer position error between a target timer position or an actual timer position just before the switching controlling, and the actual timer position from the start of cam lift, whereby a lag condition (timer excess lag) at an injecting period can be prevented. On the other hand, in transferring from the pilot control region to the non-pilot control region, the SPV is controlled to be closed and opened at a position delayed by the amount of a pre-stroke value corresponding to the timer position error between the target timer position and the actual timer position after switching controlling from the start of cam lift, whereby the spark-advance (timer excess spark-advance) in the injecting period can be prevented.
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