| 摘要 |
PURPOSE:To imporve torque of an engine and reduce its fuel consumption, by performing excess fuel correction in accordance with a function value corresponding to speed of the engine, when the opening of a throttle valve is at least a prescribed opening, and always obtaining output mixture ratio. CONSTITUTION:A throttle opening sensor 5 is connected to an excess fuel signal generator circuit 8, and an ignition signal is fed to said circuit 8. The excess fuel signal generator circuit 8 is previously stored with a function value corresponding to a frequency of the ignition signal in a memory or the like. In a range of large opening of a throttle valve, a built-in switch of the throttle opening sensor 5 is turned on, and the excess fuel signal generator circuit 8 generates an excess fuel signal of function value corresponding to the ignition signal. An excess fuel correction circuit 4 corrects pulse width of a basic pulse and generates a fuel injection pulse to obtain output mixture ratio. In this way, torque of an engine can be improved to reduce fuel consumption. |
