| 摘要 |
PURPOSE:To improve the engine performance, by providing a correcting means for increasing or decreasing the proportional control value given from an injection timing control means according to the engine speed, the atmospheric pressure and the rate of change of the engine load. CONSTITUTION:A fuel injection timing control apparatus of this invention comprises target-timing calculatig means 79 which calculates target value of the fuel injection timing from the output signals of an engine-speed detecting means 76, an engine-load detecting means 77 and an atmospheric pressure-detecting means 78. Further, the apparatus comprises a correcting means 84 which increases or decreases the proportional control value given from an injection timing control means 82 when the rate of change of the engine load is greater than a prescribed value. With such an arrangement, it is enabled to shorten the response time for controlling the injection timing at the time of transient operation, for instance, at the time of accelerating or decelerating an engine. Further, since the atmospheric pressure is added as an element to the control conditions, an optimum injection timing can be obtained even at the time of operating the engine at highland. |
