CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To ensure stability of driving while preventing knocking when switching from compression self-ignition combustion to spark ignition combustion. SOLUTION: After various values are calculated at the time of switching from the compression self-ignition combustion to the spark ignition combustion (S21), a suction amount of air is reduction-controlled by a throttle opening based on a target collector inner pressure (S22). A pressure difference of the target collector internal pressure and an actual collector inner pressure and an actual flow rate of air of respective cylinders based on the difference of the pressure are determined by the actual flow rate of air and an injection amount of fuel is switched to the spark ignition combustion from the cylinder in which the spark ignition combustion becomes possible. An ignition timing is largely spark-advance-corrected in the cylinder in which a lean degree is large against a target air/fuel ratio after switched corresponding to (actual flow rate of air determined by) the difference of pressure against the switched cylinder. COPYRIGHT: (C)2004,JPO