| 摘要 |
PURPOSE:To simplify the fitting structure of a fuel injection valve by supporting a fuel injection valve horizontally on the circumferential wall of a throttle chamber, and further to achieve the uniform distribution of fuel by providing a plurality of staircase-shaped reflecting plates so as to be opposite to the fuel injection valve. CONSTITUTION:On the circumferential wall 21a of a throttle chamber 21 provided with a throttle valve 22, and on the upstream side of the throttle valve 22, a fuel injection valve 23 is horizontally supported so that the direction of injection is in the direction perpendicular to the axis of the chamber 21. Further, inside the chamber 21, within the range of the injection angle of the fuel injection valve 23, a plurality of flat-plate-shaped refrecting plates 26 are installed in a staircase shape using a stay 27 in such a way that they are parallel to the axis of the chamber 21 and are more distant from the fuel injection valve 23 as they go to the downstream side. And projections 26a as a guide to guide fuel attached on the downstream-side periphery of each reflecting plate 26 to the dropping position are provided in such a position as the fuel drops in the vicinity of the periphery of the throttle valve 22.
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