| 摘要 |
PURPOSE:To carry out air-fuel ratio control well under decelerating operation by comparing a referential variation rate being set corresponding to an engine load with a detected throttle valve opening variation rate, thereby judging decelerating condition of engine correctly. CONSTITUTION:Means A sets a fuel injection quantity under normal operation based on an operating condition of engine. Means B controls driving of a fuel injection valve C based on a setting fuel injection quantity. In such arrangement, means D detects opening variation rate of a throttle valve and means E compares the opening variation rate of the throttle valve with a referential variation rate to judge the decelerating operation of engine. Furthermore, means F detects an engine load and means G sets the referential variation rate variably corresponding to the engine load. When decelerating condition of engine is recognized, means H makes decremental correction of fuel injection quantity corresponding to the operating condition of engine.
|
