| 摘要 |
PURPOSE:To accurately control air fuel ratio at continuous acceleration and deceleration in a suitably correcting method of a basic injection quantity in accordance with an engine operational condition, by correcting the air fuel ratio with an addition value of prescribed quantities of acceleration increase and deceleration decrease when the acceleration increase and the deceleration decrease are duplicated. CONSTITUTION:In a digital control circuit 54, the basic injection timing is read from an ROM by intake pipe pressure from an intake pipe pressure 23 and engine speed from a crank angle sensor 44 to control an injector 30. Here at acceleration, a correction coefficient is increased, and then deceleration is performed to a prescribed speed 0 at each engine speed to perform acceleration increase. While at deceleration, the correction coefficient is minimized, and then injection is restored to a prescribed restoration speed at each engine speed to perform deceleration decrease. When the acceleration increase and the deceleration decrease are duplicated, correction of air fuel ratio is executed by an addition value of each singly obtained acceleration increase and deceleration decrease. |
