| 摘要 |
PURPOSE:To smoothly switch a map and improve operation performance by controlling the fuel state for each kind of fuel having difference octane number and holding the advance angle value immediately before outside a judgement region and by starting the advance angle in the next time according to the advance angle immediately before. CONSTITUTION:The operation state of an engine is detected by a means (a), and the knocking generated in the engine is detected by a means (b). A fundamental control value for controlling the fuel state is set for each fuel having different octane number is set by a means (c), and said control value is stored in a map. Switching from a low octane number map to a high octane number map is instructed by the first means (d), and after a prescribed advance angle value is held in necessary case, the advance from this advance angle value to the ignition timing is started. While, the switching from the high octane number map to the low octane number map is instructed by the second means (e). Further, on the basis of the fundamental control value of the selected map, a means (f) controls a means (g) for operating the combustion state of the engine. |
