| 摘要 |
PURPOSE:To control the min. ignition advance angle value in stable ways regard less of the dispersion of the crank angle position with which the internal pres sure in the engine cylinder becomes max., by executing correction so that the feedback correction quantity per ignition cycle becomes less as the revolution speed of an internal combustion engine becomes larger. CONSTITUTION:A controller is equipped with a means 11 for calculating the fundamental ignition timing on the basis of the detection value of the engine operation condition. Further, a means 12 for detecting the crank angle position where the internal pressure in the engine cylinder in combustion becomes max. and a means 13 for calculating the feedback correction quantity per ignition cycle on the basis of the deviation between the detected max. crank angle position and a previously set aimed crank angle position are provided. Further, a means 14 for calculating the output ignition timing by correcting the fundamental ignition timing on the basis of the correction quantity is provided. With such constitution, a means 15 for correcting the feedback correction quantity per ignition cycle on the basis of the engine revolution speed is installed. Therefore, as the engine revolution speed becomes larger, the correction quantity is reduced. |
