| 摘要 |
PURPOSE:To increase the drive power to make it possible to eliminate the feeling of insufficient output power, by operating a load reducing device in an engine high output range during feed-back control of an air-fuel ratio to decrease load due to accessory devices. CONSTITUTION:An actuator 1 is operated in accordance with a signal from an O2 sensor 3 and a desired air-fuel mixture ratio. Meanwhile the output of a setting unit 112 is raised in accordance with a total running time of an engine counted by a counter 111. At this time a counter 109 is reset when the high power range is detected by means of a switch 2, and further, when new counting reaches the output of the setting unit 112, a gate 107 is turned on but a gate 103 is turned off by a signal from a comparator circuit 113 to interrupt feed-back control after the duration of a predetermined time in accordance with the total running time so that the control of enrich air-fuel ratio is brought about by means of an integral value holding circuit 106. Further a load decreasing device 5 is operated through an AND circuit 115, simultaneously with detection of high power range, to stop accessory devices during the comparator 113 issues its low output. Thus, insufficient power feeling may be eliminated. |
