WO1988009867A1 - Systeme d'injection de carburant a soupape de non-retour type parapluie - Google Patents

Systeme d'injection de carburant a soupape de non-retour type parapluie Download PDF

Info

Publication number
WO1988009867A1
WO1988009867A1 PCT/US1987/003031 US8703031W WO8809867A1 WO 1988009867 A1 WO1988009867 A1 WO 1988009867A1 US 8703031 W US8703031 W US 8703031W WO 8809867 A1 WO8809867 A1 WO 8809867A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
umbrella
fuel
check valve
ring
Prior art date
Application number
PCT/US1987/003031
Other languages
English (en)
Inventor
Ralph Oriola
Charles F. Romine
Edward O. Meisner
Original Assignee
Eagle-Picher Industries, 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 Eagle-Picher Industries, Inc. filed Critical Eagle-Picher Industries, Inc.
Publication of WO1988009867A1 publication Critical patent/WO1988009867A1/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
    • F02M37/04—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre

Definitions

  • This invention relates to an automobile fuel injection system, and particularly to the one-way check valve between the fuel pump and the fuel injec ⁇ tor.
  • Fuel injection systems for automobiles include a fuel tank, a vane-type electrical fuel pump in the tank, an outgoing fuel line to the injector, and a return line to the tank.
  • a one-way check valve is located between the pump and the injector. When the ignition is on, the pump continuously circulates fuel, through the check valve, to the injector and back to the tank. The one-way check valve provides assurance that when the ignition is not on, the line between the check valve and the injector will remain full of fuel and the fuel will not drain back into the tank.
  • the check valves for the fuel injection system thus described have spring-loaded ball valves. These check valves produce an undesirable hum at a frequency which is dependent upon the rpm and number of vanes of the vane-type electric fuel pump. Almost any type of pump will create undesirable vibrations.
  • the check valve hum is particularly noticeable in the rear seat of a vehicle.
  • the objective of the invention has been to provide a check valve for a fuel injection system that functions quietly and eliminates the undesirable noise heretofore produced by the spring-loaded ball check valve and eliminates a spring.
  • the objective of the invention is attained by employing an umbrella valve as a check valve in the system.
  • the umbrella valve is formed in part by -a tube having an internal ring presenting an axial hole.
  • the umbrella valve is an elastomer having an umbrella- shaped top positioned at one side of said ring and adapted to cover the opening to prevent fluid flow in one direction through the opening.
  • Structure is provided for holding the umbrella-shaped top over the opening formed by the axial hole.
  • a stem extends from the center of the umbrella-shaped top through the hole.
  • the stem has a grommet section whose dimension exceeds the diameter of the hole and which bears against the ring to hold the check valve in position with the umbrella-shaped top pressing against the opposite side of the ring.
  • a retainer ring is fixed in the passageway at the outlet side of the seal. The seal engages that retainer ring and is prevented from moving away from the axial hole in an axial direction.
  • the umbrella-shaped top is sufficiently resilient and flexible as to permit the passage of fluid past it when the pump is in operation.
  • fuel pressing against the convex side of the umbrella- shaped top prevents fluid flow back from the injector to the pump, thus keeping the line to the injector full of fuel.
  • a soft, flexible elastomer as the movable element eliminates the undesirable hum heretofore caused by the spring-loaded ball check valve.
  • Fig. 1 is a diagrammatic view of a fuel injection system
  • Fig. 2 is a cross-sectional view of one embodiment of the valve
  • Fig. 3 is an end view taken along lines 3-3 of the umbrella valve of Fig. 2;
  • Fig. 4 is a cross-sectional view of an alternative embodiment of the valve.
  • Fig. 5 is a cross-sectional view taken along lines 5-5 of Fig. 4.
  • Fig. 6 is a cross-sectional view of another alternative embodiment.
  • the fuel injection system is diagrammatically shown. It includes a fuel tank 10 for gasoline.
  • An electric fuel pump 11 is disposed in the bottom of the gas tank.
  • the fuel pump 11 is connected by a line 12 to an injector 13.
  • the in- jector is a known system of nozzles and distribution means by which the fuel is injected into the engine cylinders in timed relation to the firing cycle of the engine.
  • a return line 14 connects the injector back to the gas tank.
  • a one-way check valve 15 is disposed in the line 12 between the electric pump and the injector. The valve is oriented to permit flow from the pump through the valve to the injector in line 12, the gasoline being continuously circulated back to the tank through the line 14.
  • the valve 15 is positioned in the line 12 by means of tubes 20 and 21 forming a part of the line
  • the tubing is secured to a metallic tubular valve housing 25 having a small diameter inlet 26 and a large diameter outlet 27. Between the inlet 26 and outlet 27 is an internal ring 28 which presents a valve seat 30 and a hole 31.
  • the check valve is quite small.
  • a typical diameter of the outlet is ⁇ inch
  • the diameter of the inlet is 0.350 inch
  • the dia e- ter of the orifice or hole formed by the ring 28 is i inch.
  • the ring thickness is about .060 inch.
  • the umbrella valve is indicated at 35 and includes an umbrella top 36 that is integral with a stem 37.
  • the material is a rubber-like fluoro sili- cone elastomer or fluoro elastomer that is resistant to gasoline having a durometer in the range of 50 to 80.
  • the stem has radially-projecting grommet sec ⁇ tions 40 whose transverse dimension is greater than the diameter of the hole 31. For example, the maximum dimension across the grommet sections 40 is about 0.300 inch.
  • On each side of the grommet sections are flutes 41 through which fuel may pass to reach the underside of the umbrella top 36.
  • the umbrella top has a flat, circular rim 43 which normally bears against the valve seat 30. The rim 43 is spaced from the grommet 40 a distance slightly less than the 0.060 inch thickness of the ring 28 so that when the umbrella valve is in posi ⁇ tion, the rim 43 is held in engagement with the valve seat 30.
  • the movable element namely, the umbrella valve 35
  • the umbrella valve 35 is a soft, resilient elastomer
  • the pulsation of the gasoline as caused by the vane-type fluid pump may cause the umbrella valve to flex slightly, but it will do so silently.
  • An alternative embodiment of the valve is shown in Figs. 4 and 5.
  • the housing 25 has an inlet 26 and an outlet 27. Between the inlet and outlet is a ring 50 having an opening 51. As best shown in Fig. 5, the opening 51 has four lobes 52.
  • the umbrella valve 55 has a flexible top 56 as before and a stem
  • the stem terminates in a solid circular grommet 58.
  • the opening 51 has four small diameter arcuate segments 59 against which the grommet 58
  • the umbrella top has no stem which is captured in the opening. Rather, the umbrella top in the form of a thin concave-convex diaphragm is as shown at 60 in Fig. 6.
  • a retainer ring 61 is mounted on a shoulder
  • the retainer ring has multiple holes 63 therethrough to permit the passage of fuel.
  • the retainer ring has a hub 64 against which the center of the umbrella top rests to hold the umbrella top in the position shown in Fig. 6. 25 It can be seen from Fig. 6 that the retainer ring blocks movement of the umbrella valve in the direction of the flow but permits its peripheral portion 65 to flex away from the seat 66 to permit fuel flow in the direction shown by the arrow 67. Movement of the umbrella valve is blocked by its engagement with the hub 64 of the retainer ring 61.
  • This embodiment allows the elimination of the stem section of the seal. Its advantages are a much larger inlet port because of the elimination of the restriction at the opening normally covered by the seal.
  • the seal retainer is press-fit into the outlet of the valve housing and is seated on a counterbore or shoulder 62 on the outlet housing. Since this seat is on the discharge side of the valve, the fit of the retainer into the bore does not need to be leak-proof. This has an additional advantage to the seal manufacturer in that it eliminates the mold undercut required with the version that has the umbrella top and stem.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Un système d'injection de carburant comprend un réservoir de carburant (10) muni d'une pompe électrique (11), un injecteur de carburant (13), des canalisations (12), (14) permettant de faire circuler l'essence du réservoir vers l'injecteur et vice versa, ainsi qu'une soupape de non-retour type parapluie (15) entre la pompe et l'injecteur de carburant.
PCT/US1987/003031 1987-06-01 1987-11-19 Systeme d'injection de carburant a soupape de non-retour type parapluie WO1988009867A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5614887A 1987-06-01 1987-06-01
US056,148 1987-06-01

Publications (1)

Publication Number Publication Date
WO1988009867A1 true WO1988009867A1 (fr) 1988-12-15

Family

ID=22002484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/003031 WO1988009867A1 (fr) 1987-06-01 1987-11-19 Systeme d'injection de carburant a soupape de non-retour type parapluie

Country Status (1)

Country Link
WO (1) WO1988009867A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498275A1 (fr) * 1991-02-07 1992-08-12 Tetsuya Tada Distributeur à pompe et sa valve d'aspiration
EP0618108A1 (fr) * 1993-03-27 1994-10-05 ITT Automotive Europe GmbH Dispositif optique équipé d'une soupape unidirectionelle pour véhicule
EP0712640A1 (fr) * 1994-11-19 1996-05-22 Smiths Industries Public Limited Company Appareil médical comprenant une valve sur un conduit de fluide
EP0732301A1 (fr) * 1995-03-17 1996-09-18 Total Raffinage Distribution S.A. Dispositif de limitation de perte de liquide, adaptable sur un organe de distribution de liquide sous pression
WO2005017340A1 (fr) * 2003-08-19 2005-02-24 Dayco Fuel Management S.P.A. Dispositif de filtre destine a filtrer des vapeurs de carburant generees dans le reservoir d'un vehicule a moteur
US6945889B2 (en) * 2002-10-04 2005-09-20 Borgwarner Inc. Hydraulic chain tensioner
JPWO2004016314A1 (ja) * 2002-08-13 2005-12-02 株式会社ジェイ・エム・エス 流体制御装置
JP2008080126A (ja) * 2006-09-26 2008-04-10 Alcon Inc 自由状態で通常閉じている弁
EP2292916A1 (fr) 2009-07-21 2011-03-09 Motonic Corporation Soupape de retour pour véhicule LPI adapté à un véhicule au gaz
RU2544351C1 (ru) * 2014-02-04 2015-03-20 Общество с ограниченной ответственностью "Русская электротехническая компания" ("РУСЭЛКОМ") Запорный орган клапана
WO2016206914A1 (fr) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Dispositif d'injection d'un agent de réduction liquide
EP3139027A1 (fr) * 2015-09-02 2017-03-08 Continental Automotive Systems, Inc. Vanne thermostatique ayant une propriete anti-siphon
DE202017101767U1 (de) * 2017-03-28 2018-06-29 Reinz-Dichtungs-Gmbh Pilzventil mit Verstärkung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579855A (en) * 1946-04-23 1951-12-25 Pockel Irving Valve
FR1570162A (fr) * 1967-06-12 1969-06-06
DE1475963A1 (de) * 1965-02-23 1969-07-10 Continental Gummi Werke Ag Rueckschlagventil,insbesondere Entlueftungsventil
CH516113A (de) * 1970-05-27 1971-11-30 Bosch Gmbh Robert Rückschlagventil
FR2401375A1 (fr) * 1977-08-25 1979-03-23 Schmelzer Corp Clapet commandant le passage d'un fluide dans une ouerture de paroi
US4569637A (en) * 1984-02-22 1986-02-11 Walbro Corporation In-tank fuel pump assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579855A (en) * 1946-04-23 1951-12-25 Pockel Irving Valve
DE1475963A1 (de) * 1965-02-23 1969-07-10 Continental Gummi Werke Ag Rueckschlagventil,insbesondere Entlueftungsventil
FR1570162A (fr) * 1967-06-12 1969-06-06
CH516113A (de) * 1970-05-27 1971-11-30 Bosch Gmbh Robert Rückschlagventil
FR2401375A1 (fr) * 1977-08-25 1979-03-23 Schmelzer Corp Clapet commandant le passage d'un fluide dans une ouerture de paroi
US4569637A (en) * 1984-02-22 1986-02-11 Walbro Corporation In-tank fuel pump assembly

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498275A1 (fr) * 1991-02-07 1992-08-12 Tetsuya Tada Distributeur à pompe et sa valve d'aspiration
EP0618108A1 (fr) * 1993-03-27 1994-10-05 ITT Automotive Europe GmbH Dispositif optique équipé d'une soupape unidirectionelle pour véhicule
EP0712640A1 (fr) * 1994-11-19 1996-05-22 Smiths Industries Public Limited Company Appareil médical comprenant une valve sur un conduit de fluide
EP0732301A1 (fr) * 1995-03-17 1996-09-18 Total Raffinage Distribution S.A. Dispositif de limitation de perte de liquide, adaptable sur un organe de distribution de liquide sous pression
FR2731690A1 (fr) * 1995-03-17 1996-09-20 Total Raffinage Distribution Dispositif de limitation de perte de liquide, adaptable sur un organe de distribution de liquide sous pression
US5704522A (en) * 1995-03-17 1998-01-06 Total Raffinage Districution S.A. Device for limiting liquid loss, suitable for a pressurized liquid dispenser
JP2010012277A (ja) * 2002-08-13 2010-01-21 Satoru Hashimoto 薬剤供給用流体制御装置
JP4520301B2 (ja) * 2002-08-13 2010-08-04 株式会社ジェイ・エム・エス 流体制御装置
JPWO2004016314A1 (ja) * 2002-08-13 2005-12-02 株式会社ジェイ・エム・エス 流体制御装置
US6945889B2 (en) * 2002-10-04 2005-09-20 Borgwarner Inc. Hydraulic chain tensioner
WO2005017340A1 (fr) * 2003-08-19 2005-02-24 Dayco Fuel Management S.P.A. Dispositif de filtre destine a filtrer des vapeurs de carburant generees dans le reservoir d'un vehicule a moteur
JP2013099596A (ja) * 2006-09-26 2013-05-23 Alcon Inc 自由状態で通常閉じている弁
JP2008080126A (ja) * 2006-09-26 2008-04-10 Alcon Inc 自由状態で通常閉じている弁
EP2292916A1 (fr) 2009-07-21 2011-03-09 Motonic Corporation Soupape de retour pour véhicule LPI adapté à un véhicule au gaz
RU2544351C1 (ru) * 2014-02-04 2015-03-20 Общество с ограниченной ответственностью "Русская электротехническая компания" ("РУСЭЛКОМ") Запорный орган клапана
WO2016206914A1 (fr) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Dispositif d'injection d'un agent de réduction liquide
CN107787396A (zh) * 2015-06-24 2018-03-09 罗伯特·博世有限公司 用于液态还原剂的喷射设备
EP3139027A1 (fr) * 2015-09-02 2017-03-08 Continental Automotive Systems, Inc. Vanne thermostatique ayant une propriete anti-siphon
US10146234B2 (en) 2015-09-02 2018-12-04 Continental Automotive Systems, Inc. Thermostatic valve having anti-siphon feature
DE202017101767U1 (de) * 2017-03-28 2018-06-29 Reinz-Dichtungs-Gmbh Pilzventil mit Verstärkung

Similar Documents

Publication Publication Date Title
US5507318A (en) Umbrella check valves
WO1988009867A1 (fr) Systeme d'injection de carburant a soupape de non-retour type parapluie
US4294215A (en) Fuel injection system
EP0690362B1 (fr) Régulateur de pression de carburant à passage direct
US20030161746A1 (en) High-pressure fuel pump and assembly structure of high-pressure pump
US5509444A (en) Flow through pressure regulator
US5435344A (en) Flow through fuel pressure regulator
US5794597A (en) Device for supplying internal combustion engine with fuel from supply container
WO2005103482A1 (fr) Regulateur de pression dote d'un diffuseur d'ecoulement
US5577478A (en) Integrated fuel pressure regulator and rail assembly
US4633901A (en) Pressure regulator
CA2460619C (fr) Soupape flexible ou ensemble de soupape flexible
US6942787B2 (en) Filter module with pressure regulator
US5619972A (en) Demand pressure regulator
US6481418B1 (en) Fuel pressure regulator
JP4154033B2 (ja) 内燃機関
US5785080A (en) Pressure-regulating valve
EP0636785B1 (fr) Régulateur de pression de carburant à passage direct
US5099878A (en) Tube mounted low pressure check valve
US4212316A (en) Control valve
EP1412635B1 (fr) Regulateur possedant des diffuseurs d'ecoulement multiples
US5890518A (en) Throttle device for a pressure control apparatus
US3198128A (en) Mechanical pump
US6834673B2 (en) Pump module with pressure regulator
JPH11501382A (ja) 内燃機関用の燃料噴射弁

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE