| 摘要 |
This invention concerns a fuel injector for an engine having a combustion chamber provided with a plurality of intake ports, an intake manifold connected to these ports via a branch, intake valves which open and close the ports, and stems passing through the ports which support the intake valves. A fuel injector body is provided upstream of the branch, and the fuel delivered by this body is ejected near the valve stems of the intake ports via a guide pipe which is branched at its end. The openings in the ends of the guide pipe are preferably situated on the side of the center of the combustion chamber, and inject fuel only when the intake valves are open. A mixing mechanism may also be provided to mix fuel and air in the body of the fuel injector. The ends of the guide pipe may also be further branched toward respectively the center and the outside of the combustion chamber. By means of this construction, fuel is prevented from depositing on the walls of the intake ports or the stems of the intake valves, is converted efficiently to fine droplets, and is dispersed evenly in the combustion chamber.
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