| 摘要 |
PURPOSE:To enable the driver to control an injection amount accurately reflecting his will, by discriminating steady and transient operating conditions by the output of a means, which detects a signal corresponding to an intake air amount, and correcting the detection value of intake pipe pressure so as to calculate the injection amount. CONSTITUTION:When an engine is operated, an arithmetic control device 26, obtaining a change rate DELTAVTH of a throttle valve opening VTH detected by a throttle valve opening sensor 23, calculates an intake pipe pressure Pm' used for calculation of a fuel injection amount in accordance with this change rate DELTAVTH. Next, the arithmetic control device 26, obtaining the dirrerence DELTAVTH in the throttle valve opening between at the present and before a predetermined time, decides whether the engine is in steady operation or transient operation by comparing this difference DELTAVTH with a predetermined value C. Then the device 26, when the engine is decided in its accelerating (decelerating) condition, calculates the fuel injection amount by using said intake pipe pressure Pm' as a value in which a corrective value obtained by a two-dimensional map or a calculation formula from the present throttle opening VTH and speed Ne is added to (subtracted from) an actual intake pipe pressure Pm detected by an intake pipe pressure sensor 16. |
