| 摘要 |
PURPOSE:To improve control accuracy of an intake air quantity at a deceleration excessive change, by assuming a value, multiplied with a decrease coefficient, for a value of actual intake air quantity, at decreasing of the intake air quantity when its detected value is smaller than a value multiplied with the prescribed decrease coefficient to the preceding detected value. CONSTITUTION:A detected analog signal from an air quantity detector 11 is firstly converted to a digital signal by an A/D converter 12 to arighmetically obtain an intake air quantity Qi, while output from a speed detector 13 is converted to a voltage signal by an F/V converter 14 to obtain a speed NE. Then the decrease coefficient beta is multiplied to an intake air quantity data Qi-1 before one time ignition, if Qi<betaQi-1, the then actual intake air quantity is assumed for betaQi-1. And then an intake air quantity per one revolution of an engine betaQi-1/NE is obtained from the speed NE, from this value, a fuel feed quantity tauv and ignition IGt are obtained, thus a fuel injection valve 16 and coil with ignitor 21 are operated. |
