| 摘要 |
PURPOSE:To improve the accuracy in controlling the air fuel ratio, by switching the fuel injection to one fuel injection per cycle of the engine under the specified operating state of the engine, and alleviating the restriction of the minimum fuel injection quantity. CONSTITUTION:Two fuel injections are oerformed for one cycle of the engine in synchronization with the rotation of the engine. In step 58, the engine speed of 1,000rpm or more is judged. In a step 59, the fuel is cut OFF. When the engine speed of 900rpm or less is judged in a step 60, a program is finished, and the fuel cut is finished. When the engine speed is 900rpm or more, the step is advanced to a step 61, the contents of a counter, which counts the number of rotation of a crank shaft are judged. In this way, since one fuel injection per cycle of the engine is performed when the engine speed is decreased and the fuel cut is finished, the accuracy in controlling the air fuel ratio can be improved. |
