| 摘要 |
PROBLEM TO BE SOLVED: To restrain combustion from being more deteriorated in a case where a valve close timing of an intake valve is separated from an intake bottom dead center, than a case where it is not separated from the intake bottom dead center. SOLUTION: When the valve close timing of the intake valve 2 is separated from the intake bottom dead center, an ignition timing by a spark plug 55 is advanced compared with the case where the timing of the intake valve 2 is not separated from the intake bottom dead center.
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