| 摘要 |
<p>A fuel injection system for an internal combustion engine for injecting fuel the internal combustion engine having a plurality of cylinder by means of a single fuel injector. Problem to be solved reside in that fuel injected in synchronism with respective suction strokes of the plural cylinder through the single fuel injector can not distributed uniformly to the individual cylinders over a whole operating range of the engine due to lag in transportation of the injected fuel to the cylinders and delay in operation of an electromagnetic valve of the fuel injector. For a four-cylinder engine in which the suction stroke is repeated in the order of a first, a third, a fourth and a second cylinders, the single fuel injector (202) responds to a control signal from a control system (500) thereby to initiate a single-shot injection upon the suction strokes of the first and the fourth cylinders. The fuel injection initiating timing as well as the injecting duration are arithmetically determined by CPU (502) and ROM (504) of the control system (500) on the basis of the signals representative of operating conditions of the engine available from a hot-wire sensor (116), a crank angle detector (314), a temperature sensor (316), an O2-sensor (406) and supplied to the single fuel injector (202). The first and fourth cylinders to which the fuel is to be injected are changed over to the second and the third cylinders by CPU (502) in response to the signal output from the O2-sensor (406).</p> |
