Automotive fuel pump housing with rotary pumping element
AssigneeFord Motor Company
InventorsDequan Yu, Henry W. Brockner
Life of this patent
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Abstract
An automotive fuel pump has a pump housing encasing a rotary pumping element which forms two non-communicating chambers comprising an inlet chamber in communication with a fuel inlet and an outlet pumping chamber in communication with a fuel outlet. The rotary pumping element has a ring portion along an outer circumference, a plurality of vanes around an inner circumference radially inward of the ring portion, and a plurality of axially extending fuel flow passages located radially between the plurality of vanes and the ring portion. Fuel passes from the fuel inlet to the outlet pumping chamber and from the inlet pumping chamber to the fuel outlet through the fuel flow passages in the rotary pumping element.
Claims20
A fuel pump for supplying fuel from a fuel tank to an automotive engine, comprising:
- a pump casing;
- a motor mounted within said casing and having a shaft extending therefrom;
- a rotary pumping element fitted to said shaft having a ring portion along an outer circumference thereof, a plurality of vanes around an inner circumference radially inward of said ring portion, and a plurality of axially extending fuel flow passages located radially between said plurality of vanes and said ring portion;
- and
- a pump housing mounted within said pump casing and having a fuel inlet and a fuel outlet therethrough, said pump housing encasing said rotary pumping element therein such that two axially spaced pumping chambers connected in series by said flow passages are formed along the periphery of said rotary pumping element.
A fuel pump for supplying fuel from a fuel tank to an automotive engine, comprising:
- a pump casing;
- a motor mounted within said casing and having a shaft extending therefrom;
- a pump bottom mounted within said casing having a pump outlet therethrough and an annular bottom channel formed along an outer circumference thereof;
- a rotary pumping element fitted to said shaft having a ring portion along an outer circumference of said pumping element, a plurality of vanes around an inner circumference radially inward of said ring portion, and a plurality of axially extending fuel flow passages located radially between said plurality of vanes and said ring portion;
- and
- a pump cover having an annular cover channel along an outer circumference and a fuel inlet therethrough, said pump cover mounted on an end of said casing and to said pump bottom with said rotary pumping element therebetween such that said pump cover, said rotary pumping element, and said pump bottom cooperate to form a pump housing having two axially spaced pumping chambers connected in series by said flow passages along the periphery of said rotary pumping element.
A fuel pump for supplying fuel from a fuel tank to an automotive engine, comprising:
- a pump casing;
- a motor mounted within said casing and having a shaft extending therefrom;
- a pump bottom mounted within said casing having a pump outlet therethrough and an annular bottom channel formed along an outer circumference thereof;
- a rotary pumping element fitted to said shaft having a ring portion along an outer circumference of said pumping element, a plurality of vanes around an inner circumference radially inward of said ring portion, and a plurality of axially extending fuel flow passages located radially between said plurality of vanes and said ring portion;
- and
- a pump cover having an annular cover channel along an outer circumference and a fuel inlet therethrough, said pump cover mounted on an end of said casing and to said pump bottom with said rotary pumping element therebetween such that said pump cover, said rotary pumping element, and said pump bottom cooperate to form a pump housing having two axially spaced pumping chambers connected in series by said flow passages along the periphery of said rotary pumping element, and wherein said non-communicating pumping chambers comprise an inlet pumping chamber in communication with said fuel inlet and an outlet pumping chamber in communication with said fuel outlet, with fuel passing from said fuel inlet to said outlet pumping chamber and from said inlet pumping chamber to said fuel outlet through said fuel flow passages in said rotary pumping element.
Dependencies are inferred from the claim text.