Fuel injection timing control stratified combustion internal combustion engine

摘要

A laminar burning internal combustion engine with a fuel injection time controlling function wherein production of smoke upon high load operation of the engine can be suppressed by control of the fuel injection time. Fuel injection time setting means (74) sets a fuel injection end time and further sets a fuel injection start time from the fuel injection end time and a required fuel amount, and injector driving means (72) drives an injector (66) in accordance with the fuel injection times. Consequently, air fuel mixture and air from a pair of intake ports (40, 42) are flowed into the combustion chamber (30) to make laminar tumble swirls so as to effect laminar combustion. Then, if judging means (76) judges that the engine is operating but not in the proximity of the fully open operation, then partial load time setting means (74) sets a fuel injection end time, but if the judging means (76) judges reversely, then fully open time setting means (74) sets a fuel injection end time to a predetermined time after starting of an intake stroke so as to suppress production of smoke. IMAGE