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US 7,040,300 B2Granted
Fuel supply nozzle
AssigneeHyundai Motor Company
InventorJi Hoon Jeong
Life of this patent
Estimating the term…
Abstract
Noise from fuel returning to a cylinder and from bubbles contained in the returning fuel is reduced by positioning a nozzle with a plurality of penetration holes, each with much less sectional area than a flow sectional area for returning fuel. The nozzle is also equipped with a guide section installed to change the proceeding direction of the fuel passing through the penetration holes and the fuel return valve.
Claims8
A nozzle for a fuel supply system of a vehicle, comprising:
- a nozzle body formed with a plurality of penetration holes in which each has a sectional area that is reduced as compared to a flow sectional area for returning fuel upstream of said holes, wherein the number of said holes is selected, based on the hole sectional area, to provide a total area greater than said flow sectional area;
- and
- a guide section integrated into said nozzle body configured to change a proceeding direction of fuel discharged from said penetration holes.
A fuel return valve for a fuel supply system of a vehicle, comprising:
- a valve body;
- a return nipple integrated into said valve body to receive a supply of returning fuel;
- a nozzle body formed with a plurality of penetration holes wherein each hole has a cross-sectional area less than a flow sectional area of fuel returning through said return nipple, the nozzle equipped with a guide section integrated into said nozzle body to change a proceeding direction of fuel discharged from said penetration holes;
- a valve spool installed in a way that makes straight line sliding possible within the valve body;
- a spring installed to allow only a flow of fuel streaming to said nozzle from said return nipple by applying an elastic force to said valve spool;
- and
- a plunger that delivers the elastic force of the spring to the valve spool and guides the straight line sliding motion of said valve spool.
4 more elements
A fuel return system, comprising:
- a fuel return valve;
- and
- a nozzle, wherein said nozzle is configured and dimensioned to couple with said fuel return valve, said nozzle defining a plurality of holes therethrough, and wherein said nozzle includes a deflector positioned near an exit of said at least one hole such that fuel passing through said holes encounters said deflector, wherein said deflector has a tapered surface leading away from said fuel return valve.
Dependencies are inferred from the claim text.