CONTROL DEVICE FOR SELF-IGNITING ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a control device with a variable compression ratio mechanism 10 allowing stable spark ignition combustion by preventing the occurrence of self ignition combustion during changing a combustion system from the self ignition combustion to the spark ignition combustion (during a compression ratio change) for establishing a high compression ratio in operation in a self ignition compression mode and a low compression ratio mode in operation in a spark ignition combustion mode. SOLUTION: A variable valve mechanism 11 for changing the valve lift characteristic of an inlet valve 5 is used to correct the closing timing of the inlet valve to a delay side during changing the compression ratio to decrease an effective compression ratio. COPYRIGHT: (C)2003,JPO