| 摘要 |
PURPOSE:To enhance response by sampling the combustion pressure, sensed by a combustion pressure sensor, in accordance with signal from an equal-volume sensor, calculating the mean effective pressure as shown in attached illustration, and by controlling the ignition timing so that this mean effective pressure is maximized. CONSTITUTION:The combustion pressure is sensed by using a combustion pressure sensor furnished at each cylinder. An equal-volume sensor is equipped, which emits a signal each time the cylinder volume changes by a certain specified amount in synchronization with rotation of the crank shaft. The combustion pressure sensed by said combustion pressure sensor is sampled in accordance with signals from the equal-volume sensor, to calculate the illustrated mean effective pressure of the combustion pressure. At Step 21, the mean effective pressure Pi' in the foregoing cycle is compared with the one Pi at this time, and the ignition timing is controlled in the direction that the mean effective pressure will rise. Thereby the respense is enhanced. |
