| 摘要 |
PURPOSE:To provide always the maximum output by stopping the feed-back of air fuel ratio in a predetermined load region of an engine and correcting fuel supply or ignition timing so that the maximum pressure value, average effective pressure and estimation parameter are directed in the maximum direction. CONSTITUTION:A controller 15 receives signals from an air flow meter 2, an intake pipe pressure sensor 2a, a water temperature sensor 6, a crank angle sensor 7, an exhaust sensor 9, an in-cylinder pressure sensor 13, etc. to obtain the maximum pressure-value and average effective at every combustion cycle from pressure in a combustion chamber and crank angle, an estimation parameter A from intake amount, rotational frequency and average effective pressure and an estimation parameter B from intake pipe pressure and average effective pressure. Fuel supply or ignition timing is corrected to direct the maximum pressure value, average effective pressure, estimation parameter A or B to the maximum so that ignition coils 17 are respectively controlled through a fuel injection valve 10 and power unit 16. Thus, the maximum output and efficiency can be always obtained even if individual engines have dispersion. |
