| 摘要 |
A fuel distribution system for a multi-cylinder internal combustion engine includes an intake manifold having a tubular inlet stack with an inlet including a mounting for a carburetor on the top thereof and a plurality of runner passages extending generally transverse to the bottom of the stack and to intake ports at each cylinder. The manifold includes a housing downstream of the stack providing a freely rotatable mounting for a shaft having a plurality of axial flow turbine blades thereon and a radial flow impeller is also mounted on the shaft, spaced from the turbine blades. The stack has a cylindrical interior wall section closely fitted to the turbine blades, defining therewith a ducted velocity turbine, and beneath the stack the housing surrounds the impeller and is connected to each of the runner passages, whereby all fuel/air mixture passes through the turbine and impeller. Usually the shaft is supported for rotation about a vertical axis, and a diffuser may be provided in the housing, being arranged in a generally horizontal circle surrounding the impeller to direct a flow of fuel/air mixture exciting the impeller radially outward through said runner passages. The impeller includes a surface extending through a curvature of approximately 90 DEG and a plurality of impeller blades projecting from its surface to accept the flow of fuel/air mixture exiting the turbine and to change the direction of such flow while returning energy into such flow.
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