Fuel injection control method for fuel injection engine

Abstract

Abstract PURPOSE:To adapt to the required fuel amount accurately by calculating the amount of fuel adhered to the wall face of the suction path and the amount of fuel to be carried therefrom and determining the practical injection amount. CONSTITUTION:In an engine 1, the fuel injection valve 20 is controlled by a controller 50 for receiving the signals from a throttle switch 29 and each sensor 28, 21, 22, 23, 24, 26, 27 for the rotary angle, negative pressure, water temperature, wall face temperature of the suction port 6, suction temperature, suction flow and O2 sensor in the exhaust gas. The wall face fuel adhesion rate and the fuel carrying rate determined empirically in accordance to the suction path structure are calculated from the suction pipe pressure, engine cooling water temperature, engine rotation and the suction flow speed on the basis of the signal from each sensors 21-26 then corrected, thereafter the accumulated adhesion fuel is updated by the carried fuel calculated at the predetermied time then corrected by the suction temperature thus to determine the practical fuel injection time.

Inventors

• 👤 Shinichi Sugiyama
• 👤 真一 杉山
• 👤 Takayoshi Nakatomi
• 👤 中富　隆喜

Bibliographic Details