| 摘要 |
PURPOSE:To perform air-fuel ratio control of each cylinder by controlling the fuel supply on the basis of air-fuel ratio of combustion gas in each cylinder detected in accordance to the exhaustion timing of each cylinder while correcting the open/close time of an electromagnetic switch on the basis of rotation and suction air. CONSTITUTION:Suction Qa and rotation N indicating the operating condition of engine 1 are measured respectively by an air flow sensor 6 and a rotation sensor then provided to a control unit 11 to calculate the valve open times T1-T4 of injector 3 for feeding fuel to each cylider. Then the air-fuel ratio of such cylinder as assigned synchronously with the injection timing at the position of crank phase delay angle QB to be determined by the engine rotation N and suction per single rotation Qa/N is sampled by a sensor 10 and fed to the control unit 11. Consequently, the open-valve pulses T1-T4 of each cylinder to be produced next are corrected to T1'-T4' thus to control fuel supply to each cylinder. |
