WO2009017476A1 - Procédé de retenue et d'étanchéité de pompe à jet avec une charnière mobile - Google Patents

Procédé de retenue et d'étanchéité de pompe à jet avec une charnière mobile Download PDF

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Publication number
WO2009017476A1
WO2009017476A1 PCT/US2007/016962 US2007016962W WO2009017476A1 WO 2009017476 A1 WO2009017476 A1 WO 2009017476A1 US 2007016962 W US2007016962 W US 2007016962W WO 2009017476 A1 WO2009017476 A1 WO 2009017476A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
flange
supply unit
reservoir
fuel supply
Prior art date
Application number
PCT/US2007/016962
Other languages
English (en)
Inventor
Paul F. Briggs
Jeffery Milton
Matthias Nederegger
John Wattai
Original Assignee
Continental Automotive Systems Us, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Systems Us, Inc. filed Critical Continental Automotive Systems Us, Inc.
Priority to PCT/US2007/016962 priority Critical patent/WO2009017476A1/fr
Publication of WO2009017476A1 publication Critical patent/WO2009017476A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03105—Fuel tanks with supplementary interior tanks inside the fuel tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03111—Swirl pots

Definitions

  • the invention relates to fuel supply units for automobile vehicles and more particularly, to a jet pump assembly of a fuel supply unit that includes a seal to reduce noise in a fuel tank and to improve performance of the jet pump assembly.
  • One type of a conventional fuel pump unit for supplying fuel in a vehicle includes a fuel pump disposed within a swirl pot or fuel reservoir.
  • the reservoir is disposed near a bottom of a fuel tank.
  • the fuel pump pumps fuel from the reservoir through a fuel filter to an engine.
  • a pressure regulator is coupled to the filter housing and returns excess fuel to the reservoir.
  • the fuel pump also operates a jet pump assembly that draws fuel into the reservoir to ensure that the reservoir is replenished with fuel.
  • a housing of the jet pump assembly is typically in plastic-to-plastic contact with the bottom of the reservoir that transmits noise when the jet pump assembly is operating to replenish the reservoir with fuel.
  • the housing-reservoir interface defines a tortuous path for fuel so that fuel is drawn substantially directly from the fuel tank.
  • An object of the invention is to fulfill the need referred to above.
  • this objective is achieved by providing a fuel supply unit that includes a fuel reservoir for holding fuel.
  • a fuel pump is in the reservoir for pumping fuel from the reservoir.
  • a jet pump assembly is within the reservoir for drawing fuel from a fuel tank into the reservoir.
  • a seal structure has a flange with a living hinge. The seal structure is operatively coupled with a housing of the jet pump assembly and disposed between the housing and a portion of the reservoir, with a portion of the flange being pivoted about the living hinge such that the portion of the flange engages an interior surface of the reservoir, providing a seal between the housing of the jet pump assembly and the interior surface of the reservoir.
  • FIG. 1 is a perspective view of a fuel supply unit having a jet pump assembly provided in accordance with an embodiment of the present invention.
  • FIG. 2 is a perspective view of a fuel pump of a jet pump assembly of the fuel supply unit of FIG. 1.
  • FIG.3 is a partial sectional view of a seal structure shown between a housing of the jet pump assembly and the reservoir in accordance with an embodiment of the invention.
  • FIG. 4 is a partial sectional view of the seal structure of FIG. 3.
  • FIG. 5 is a view of the seal structure of claim 4 shown coupled with a housing of the jet pump assembly and engaged with a portion of the reservoir.
  • FIG. 6 is a partial sectional view of another embodiment of the seal structure.
  • a fuel supply unit provided in accordance with an embodiment of the invention, is shown generally indicated at 10.
  • the unit includes a fuel pump and reservoir assembly 12 and a filter/regulator assembly 14 that receives fuel supplied by the assembly 12 and delivers the fuel to an engine.
  • the assembly 12 includes a fuel pump 18 and conventional jet pump assembly 16 configured to draw fuel from a fuel tank (not shown) through an opening 20 of the reservoir 22 to replenish fuel in the reservoir 22 so as to be pumped to an engine (not shown).
  • a valve 25 is associated with the opening 20.
  • a seal structure 24 is provided between a housing 23 of the jet pump 16 and a portion of the reservoir 22 so as to decouple the jet pump 16 from the reservoir 22 and to provide a seal between the jet pump housing 23 and the reservoir 22.
  • the seal structure 24 is preferably an elastomer having a generally cylindrical engaging portion 26 constructed and arranged to frictionally engage an outer periphery of the generally cylindrical jet pump housing 23.
  • an annular flange 28 extends from the engaging portion 26.
  • the flange 28 includes surfaces defining an annular extending cut-out 30 between an end portion 32 and engaging portion 26 of the seal structure 24.
  • the cut-out 30 defines a living hinge 31 such that such that the free end portion 32 of the flange 28 can pivot.
  • the cut-out 30 is shown in the upper surface 35 of the flange 28, it can be provided on the under surface 37 of the flange 28 of the seal structure 24' as shown in FIG. 6.
  • the reservoir 22 includes an annular wall 36 extending from the bottom 38 thereof.
  • the free end portion 32 of the flange 28 pivots about the living hinge 31 so as to engage the annular wall 33 or interior surface of the reservoir 22 and thus provides a seal between the reservoir and the jet pump housing 23. It has been determined that the efficiency of the jet pump assembly 16 is improved due to sealing between the jet pump housing 23 and the reservoir 22 since fuel is drawn directly from the fuel tank.
  • the annular wall 32 can include a portion 40 (FIG. 5) that extends radially towards the engaging portion 26 so as to capture the end 32 of the seal structure 24 and thus contain the jet pump housing 23 in the reservoir 22.
  • the distance B is always less than the distance A within a controlled range. This ensures that the jet pump housing 23 is press- fit into the reservoir 22 in the area of the seal structure 24, creating a tight seal.
  • the seal structure 24 is of a material that can be exposed to fuel, such as VITON®.
  • the seal structure 24 is preferably coupled with the jet pump housing 23 in a friction-fit arrangement, but can be overmolded onto the housing 23. However, since the friction engagement or overmolding require an additional process, the seal structure 24 can be molded as an integral part of the housing 23 in a single molding process. For example, at the time of molding the housing 23, preferably out of POM material, the seal structure 24 can be defined in the mold and molded from the POM material as well.
  • the seal structure 24 mechanically decouples the jet pump 16 from the bottom of the reservoir 22 to aid in noise reduction when the jet pump operates and provides a seal between the bottom of the reservoir 22 and the jet pump housing, allowing suction of fuel directly from the fuel tank.
  • the seal structure 24 also allows for tolerance stack variations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

L'invention concerne une unité d'alimentation en carburant qui comprend un réservoir de carburant (22) pour contenir du carburant. Une pompe à carburant (18) se situe dans le réservoir pour pomper du carburant à partir du réservoir. Un ensemble pompe à jet (16) se situe à l'intérieur du réservoir pour aspirer du carburant à partir d'un réservoir de carburant dans le réservoir. Une structure d'étanchéité (24) possède une bride (28) avec une charnière mobile (31). La structure d'étanchéité est couplée de façon fonctionnelle à un boîtier de l'ensemble pompe à jet et disposée entre le boîtier et une partie du réservoir, une partie de la bride étant amenée à pivoter autour de la charnière mobile de telle sorte que la partie de la bride est mise en prise avec une surface intérieure du réservoir, assurant une étanchéité entre le boîtier de l'ensemble pompe à jet et la surface intérieure du réservoir.
PCT/US2007/016962 2007-07-30 2007-07-30 Procédé de retenue et d'étanchéité de pompe à jet avec une charnière mobile WO2009017476A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2007/016962 WO2009017476A1 (fr) 2007-07-30 2007-07-30 Procédé de retenue et d'étanchéité de pompe à jet avec une charnière mobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/016962 WO2009017476A1 (fr) 2007-07-30 2007-07-30 Procédé de retenue et d'étanchéité de pompe à jet avec une charnière mobile

Publications (1)

Publication Number Publication Date
WO2009017476A1 true WO2009017476A1 (fr) 2009-02-05

Family

ID=39284128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/016962 WO2009017476A1 (fr) 2007-07-30 2007-07-30 Procédé de retenue et d'étanchéité de pompe à jet avec une charnière mobile

Country Status (1)

Country Link
WO (1) WO2009017476A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170282392A1 (en) * 2014-03-24 2017-10-05 Flexhandle, L.L..C. Razor with handle having articulable joint
US11148310B2 (en) 2014-03-24 2021-10-19 Flexhandle, L.L.C. Razor with handle having articulable joint

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040161342A1 (en) * 2003-02-19 2004-08-19 Siemens Vdo Automotive Corporation Gasket for jet pump assembly of a fuel supply unit
WO2005053987A1 (fr) * 2003-12-01 2005-06-16 Siemens Aktiengesellschaft Dispositif de fixation d'une pompe a carburant dans un reservoir a carburant
EP1719657A1 (fr) * 2005-05-04 2006-11-08 Siemens Aktiengesellschaft Unité d'alimentation arrangée dans un réservoir à carburant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040161342A1 (en) * 2003-02-19 2004-08-19 Siemens Vdo Automotive Corporation Gasket for jet pump assembly of a fuel supply unit
WO2005053987A1 (fr) * 2003-12-01 2005-06-16 Siemens Aktiengesellschaft Dispositif de fixation d'une pompe a carburant dans un reservoir a carburant
EP1719657A1 (fr) * 2005-05-04 2006-11-08 Siemens Aktiengesellschaft Unité d'alimentation arrangée dans un réservoir à carburant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170282392A1 (en) * 2014-03-24 2017-10-05 Flexhandle, L.L..C. Razor with handle having articulable joint
US11148310B2 (en) 2014-03-24 2021-10-19 Flexhandle, L.L.C. Razor with handle having articulable joint
US12030201B2 (en) 2014-03-24 2024-07-09 Flexhandle, Llc Razor with handle having articulable joint

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