| 摘要 |
PURPOSE:To improve responsiveness of fuel control, by correcting fuel supply by controlling one of a first and a second fuel injection valves located on the downstream side of the other. CONSTITUTION:A first upstream-side fuel injection valve 5 and a second downstream-side fuel injection valve 6 are provided in an intake passage. The first fuel injection valve 5 injects fuel at the time of low-load operation of an engine while the second fuel injection valve 6 injects fuel at the time of high-load operation of the engine. An operational range judging circuit 17 judges whether the throttle-valve opening is greater than a value predetermined according to the engine speed or not. In case of YES, a signal for changing the mode of fuel injection is produced on the output side of a comparison circuit 19. Thus, it is enabled to improve responsiveness of fuel control. |
