Carburetor with an inductor passage controlled by a throttle slide
AssigneeFord Motor Company
InventorDieter Stojek
Life of this patent
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Abstract
A carburetor has a throttle member in the form of a laterally movable slide controlling the size of the induction passage. At planar edge areas of the guide surfaces, the slide is sealingly and slidably guided on a surface extending normal to the induction passage. The slide is unloaded from vertical downward pressures exerted on the guide surfaces by an unloading mechanism controlled by engine manifold vacuum. Such an unloading mechanism can consist of a parallelogram lever arrangement which through a pressure chamber actuates lifting rails arranged laterally to the guide surfaces. The slide is supported on the lifting rails by roller arrangements.
Claims4
A carburetor having a slide type throttle member controlling flow through the induction passage, said slide being sealingly and slidably movable laterally on a planar surface extending substantially normal to the induction passage, the slide sealing surfaces being subjected to a vertical downward loading resulting from the pressure differential between a near atmospheric pressure acting on top of the slide and engine intake manifold vacuum acting beneath the slide, and an unloading mechanism responsive to changes in the vacuum below the slide for opposing the vertical downward loading exerted on the guide surface to enable lateral sliding of the slide with minimum effort.
Dependencies are inferred from the claim text.