Claims
- 1. A fuel system for an internal combustion engine powered by fuel, comprising:a fuel tank adapted to contain the fuel; a pump adapted to withdraw the fuel from the tank and to pressurize the fuel; a pressure regulator providing at least one of substantially constant flow-related noise at all fuel flow rates and substantially constant pressure at all fuel flow rates; and piping connecting the fuel tank and pump, the piping adapted to supply fuel to the internal combustion engine.
- 2. The fuel system according to claim 1, further comprising:a filter adapted for filtering the fuel, the filter being interposed in fluid communication along the piping, and adapted to be interposed between the tank and the internal combustion engine.
- 3. The fuel system according to claim 1, wherein the pressure regulator includes:a housing having an inlet and an outlet offset along a longitudinal axis; a divider separating the housing into a first chamber and a second chamber, the divider having a passage that communicates the first chamber with the second chamber, the passage including a first section along the longitudinal axis and a second section extending transverse to the longitudinal axis, the first section providing a first communication path between the first chamber and the second chamber, and the second section providing a second communication path between the first section and the second chamber; a closure member that permits or inhibits flow through the passage.
- 4. The fuel system according to claim 3, wherein the divider comprises a seat, the seat being suspended by the divider in the housing to provide the passage, the seat having a first seat portion and a second seat portion disposed along the longitudinal axis, the first seat portion being disposed in the first chamber, the second seat portion being disposed in the second chamber, the first section of the passage extending along the longitudinal axis in both the first portion and the second portion of the seat, and the second section of the passage extending transverse to the longitudinal axis in the second portion of the seat.
- 5. The fuel system according to claim 4, wherein the seat comprises a first surface disposed in the first chamber, a second surface disposed in the second chamber, and a side surface disposed between the first surface and the second surface, the first section communicating with the first surface and the second surface, and the second section communicating with the first section and the side surface.
- 6. The fuel system according to claim 5, wherein the first section comprises a first wall extending from the first surface to the second surface, and wherein the second section comprises a second wall and a third wall.
- 7. The fuel system according to claim 6, wherein each of the first wall, second wall, and third wall comprises a cylindrical configuration, the first wall having a first diameter, second diameter, and third diameter.
- 8. The fuel system according to claim 7, wherein the first diameter of the first wall comprises a selected value, the second diameter being proximate the second wall and the third wall, and wherein the diameter of the second wall and the third wall comprises a value approximately equal to the square root of the selected value.
- 9. The fuel system according to claim 8, wherein each of the second wall and the third wall extends through the first wall to diametrically opposed locations on the side surface.
- 10. The fuel system according to claim 9, wherein the first wall, the second wall, and the third wall are mutually orthogonal.
- 11. The fuel system according to claim 10, wherein the first wall, the second wall, and the third wall comprise, respectively, a first central axis, a second central axis and a third central axis, and wherein the first central axis, the second central axis, and the third central axis intersect at a common point located within the second portion of the seat.
- 12. The fuel system according to claim 1, wherein the flow-through pressure regulator emits sound at a sound rating in Sones that remains substantially constant from a low fuel flow rate to high fuel flow rate.
- 13. The fuel system according to claim 1, wherein the pressure of fuel in the regulator at a maximum fuel flow rate is substantially equal to or less than the pressure of fuel in the regulator at a minimum fuel flow rate.
- 14. The fuel system according to claim 1, wherein the pressure regulator includes:a housing having an inlet and an outlet offset along a longitudinal axis; a divider separating the housing into a first chamber and a second chamber, the divider having a passage that communicates the first chamber with the second chamber, the passage including a first section extending along the longitudinal axis and a second section extending transverse to the longitudinal axis; and a closure member that permits or inhibits flow through the passage.
- 15. The fuel system according to claim 14, wherein the divider comprises a seat, the seat being suspended by the divider in the housing to provide the passage, the seat having a first seat portion and a second seat portion disposed along the longitudinal axis, the first seat portion being disposed in the first chamber, a second seat portion being disposed in the second chamber, the first section of the passage extending along the longitudinal axis in both the first portion and the second portion of the seat, and the second section of the passage extending transverse to the longitudinal axis in the second portion of the seat.
- 16. The fuel system according to claim 15, wherein the seat comprises a first surface disposed in the first chamber, a second surface disposed in the second chamber, and a side surface disposed between the first surface and the second surface.
- 17. The fuel system according to claim 16, wherein the first section communicates with the first surface and the second section communicates with the side surface.
- 18. The fuel system according to claim 17, wherein the first section comprises a first wall extending from the first surface to an end wall within the second portion, and wherein the second section comprises a second wall extending from the first wall to the side surface.
- 19. The fuel system according to claim 18, wherein the second wall extends from the first wall to diametrically opposed locations on the side surface, and intersects the first wall proximate the end wall.
- 20. The fuel system according to claim 14, wherein the divider comprises a diaphragm.
- 21. The fuel system according to claim 20, and further comprising:a first biasing element located in the second chamber, the first biasing element engaging a locator on an end of the second cup-shaped member and biasing the diaphragm toward an end of the first cup-shaped member.
- 22. A method of supplying fuel from a fuel tank to an internal combustion engine using a pump, a pressure regulator, and piping connecting the fuel tank, internal combustion engine, pump, and pressure regulator, the pressure regulator stabilizing noise generation in a and including a housing with an inlet and an outlet offset along a longitudinal axis, a divider separating the housing into a first chamber and a second chamber, the divider including a passage that provides communication between the first chamber and the second chamber, and a closure member that permits or inhibits flow through the passage, the method comprising:providing the passage with a first section extending along the longitudinal axis and a second section extending transverse to the longitudinal axis; and communicating the first section with the first chamber and the second section with the second chamber.
- 23. A method of supplying fuel from a fuel tank to an internal combustion engine using a pump, a pressure regulator, and piping connecting the fuel tank, internal combustion engine, pump, and pressure regulator, the pressure regulator inversely correlating maximum pressure and flow values of a flow-through regulator while generating a generally consistent flow-related noise of the flow-through regulator, the flow-through regulator including a housing with an inlet and an outlet offset along a longitudinal axis, a divider separating the housing into a first chamber and a second chamber, the divider including a passage that provides communication between the first chamber and the second chamber, and a closure member that permits or inhibits flow through the passage, the method comprising:establishing a first communication path between the first chamber and the second chamber with a first section of the passage extending along the longitudinal axis; and establishing a second communication path between the first section and the second chamber with a second section of the passage extending transverse to the longitudinal axis.
- 24. A method for supplying fuel by a pump from a tank to an internal combustion engine, comprising:pumping the fuel under pressure; and regulating fuel flow from the pump, the regulating being at a substantially constant flow-related noise level.
- 25. A method for supplying fuel by a pump from a tank to an internal combustion engine, comprising:pumping the fuel under pressure; and regulating fuel flow from the pump, the regulating being at a substantially constant pressure.
- 26. The method according to claim 25, wherein the regulating of fuel pressure at a maximum fuel flow rate is substantially equal to or less than the pressure of fuel at a minimum fuel flow rate.
Parent Case Info
This application claims the benefit of provisional application No. 60/168,743, filed Dec. 6, 1999.
US Referenced Citations (14)
Provisional Applications (1)
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Number |
Date |
Country |
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60/168743 |
Dec 1999 |
US |