| 摘要 |
PURPOSE:To suppress a generation amount of CO in fuel control through output of a hot-wire sensor, by stopping a time fuel feed, in accordance with a degree of deceleration, under the first deceleration condition with a large rate of deceleration and decreasing a feed quantity under the second deceleration condition. CONSTITUTION:A hot-wire sensor 24 is obtained with a suction air quantity in CPU through an AD converter 128 further obtained with a quantity DELTAQA at every prescribed time, if this value is positive, an engine is under a condition of acceleration, if negative, under a condition of deceleration, and the first, second and stable range are arranged from a larger value. Under the second deceleration condition, the duration time of deceleration correction is obtained from a leval of DELTAQA and water temperature 56, while under the first deceleration condition, the fuel cut off time is obtained in accordance with the water temperature 56 and a level of DELTAQA to set a register INJD134. Accordingly internal pressure in an intake manifold is decreased by deceleration and fuel ratio is increased by rapid vaporization of fuel adhering to an inner wall, as a result, an increase of generation of CO can be prevented. |
