EP0236752A1 - Dispositif de régulateur de pression - Google Patents

Dispositif de régulateur de pression Download PDF

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Publication number
EP0236752A1
EP0236752A1 EP87101609A EP87101609A EP0236752A1 EP 0236752 A1 EP0236752 A1 EP 0236752A1 EP 87101609 A EP87101609 A EP 87101609A EP 87101609 A EP87101609 A EP 87101609A EP 0236752 A1 EP0236752 A1 EP 0236752A1
Authority
EP
European Patent Office
Prior art keywords
fuel
pressure control
valve
valve seat
control device
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP87101609A
Other languages
German (de)
English (en)
Other versions
EP0236752B1 (fr
Inventor
Siegfried Fehrenbach
Kurt Herbst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6295917&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0236752(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0236752A1 publication Critical patent/EP0236752A1/fr
Application granted granted Critical
Publication of EP0236752B1 publication Critical patent/EP0236752B1/fr
Expired legal-status Critical Current

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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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws

Definitions

  • the invention relates to a pressure control device according to the preamble of the main claim.
  • a pressure control device is already known in which a pressure control valve is already placed on a fuel rail and screwed to it. Due to the required seals, a certain size cannot be undershot, and the screw connection limits the possibilities of installing the pressure control valve in a variety of directions of rotation given the large number of motor types.
  • the pressure control device with the characterizing features of the main claim has the advantage that the sealing on the pressure control valve is significantly simplified and allows a reduction in size and any rotation of the pressure regulator to adapt the installation position of the pressure control valve to the different engine types.
  • valve seat body in a sealing manner in a valve seat support body connected to the valve housing, as a result of which the materials for the valve seat support body and the valve seat body can be selected differently and adapted to the requirements.
  • a material can be selected for the valve seat body in which particularly low wear and high corrosion resistance are guaranteed, and for example the valve seat body are made of ceramic.
  • FIG. 1 shows a first embodiment of a pressure control device
  • FIG. 2 shows a second embodiment of a pressure control device.
  • 1 is a rigid fuel rail, for example made of metal, a fuel injection system for internal combustion engines net, which has a plurality of plug connections 2, in which the fuel injection valves are inserted at one end.
  • a cup-shaped receptacle 3 is connected to the wall of the fuel rail 1, for example soldered or welded.
  • the receptacle 3 can also be integrally formed on the fuel rail and / or at least partially protrude into the fuel rail 1.
  • At least one inlet opening 5 is provided in the wall of the fuel rail 1 facing the receptacle 3, which is aligned with a connection opening 6 in the bottom 7 of the receptacle 3.
  • the inlet opening 5 and the connection opening 6 can also have an annular shape.
  • a pressure regulating valve 8 is inserted into a guide bore 47 of the receiving bushing 3 and projects with a valve seat support body 9 through a first push-through opening 10 in the receiving bushing 3 and a second push-through opening 11 in the wall 4 of the fuel rail 1 into an outlet port 12.
  • the outlet connector 12 projects into the fuel rail 1 and penetrates the wall 13 of the fuel rail 1 facing away from the pressure control valve 8 in an opening 14 in which it is tightly fastened, for example soldered.
  • the inlet opening 5 and the connection opening 6 can also be made so large that the valve seat support body 9 can be passed through the inlet opening 5 and the connection opening 6 while maintaining a sufficiently large flow cross-section around its circumference.
  • the valve seat support body 9 protrudes with its end protruding from the pressure control valve 8 into a receiving bore 15 of the outlet connector 12 and is at its periphery with an elastic sealing ring 16 for sealing against the receiving bore -15 provided.
  • the outlet port 12 penetrates in the axial direction an outlet channel 17, which leads in a manner not shown to a fuel tank or the suction side of a fuel delivery pump.
  • the fuel rail 1 is connected to a fuel supply line which is connected to the delivery outlet of the fuel delivery pump.
  • the valve housing of the pressure control valve 8 is formed from a bottom part 19 and a cover 20.
  • the base part 19 is inserted into the receptacle 3 and has the valve seat support body 9, which is either connected to the base part 19 as an independent part or is part of the base part 19. Facing one another, the base part 19 has a collar 21 and the cover 20 has a collar 22, between which a flexible valve membrane 23 is clamped by means of a flange, not shown, or a separate flange ring 24, which has a fuel chamber 25 in the base part 19 from a spring chamber 26 in the cover separates.
  • the bottom part 19 is penetrated in the axial direction by at least one inflow opening 27, which is aligned with the connecting opening 6, so that the inlet opening 5, the connecting opening 6 and the inflow opening 27 constitute an inlet channel, via which fuel flows from the fuel rail 1 into the fuel chamber 25 can.
  • a compression spring 28 is arranged in the spring chamber 26, which is supported on the one hand on the cover 20 and on the other hand on a spring plate 30 which is fastened to the valve membrane 23 by means of a rivet connection 31 which seals through the valve membrane 23.
  • the rivet connection 31 has a valve plate 32 which projects into the fuel chamber 25 and which is formed by means of a ball 33 and a Retaining bracket 34 is movably mounted in the rivet connection 31.
  • valve plate 32 is acted upon by the compression spring 28 in the direction of a valve seat 35 which is formed on a valve seat body 36 and from which the outlet channel 17 extends. If the fuel pressure in the fuel distributor line and thus also in the fuel chamber 25 rises above a value predetermined by the force of the compression spring 28, the valve plate 32 is lifted off the valve seat 35 and fuel can flow out via the outlet channel 17.
  • An air connection piece 38 is attached to the cover 20, via which the spring chamber 26 can be connected to the air intake pipe of the internal combustion engine downstream of a throttle valve by means of a hose connection, not shown.
  • the valve seat support body 9 has at its end facing the fuel chamber 25 a holding bore 39, into which the valve seat body 36 is inserted and is kept sealed therein with the interposition of an elastic sealing ring 40 by means of a flange 41, so that even when the pressure control valve is closed, i.e. when the valve plate is closed 32 is present on the valve seat 35, no leak fuel from the fuel chamber 25 can get into the outlet channel 17 via the holding bore 39.
  • the bottom part in FIG. 1 has on its circumference an only radially open sealing groove 42, in which a seal sealing in the radial direction and designed as an elastic sealing ring 43 is arranged.
  • the receptacle 3 encloses the base part 19 of the pressure control valve 6 in the axial direction from the base 7 in a region min at least so far completely that a secure seal between the bottom part 19 and the receiving bush 3 is ensured by the sealing ring 43.
  • the receiving bushing 3 can be provided at its end facing away from the fuel rail 1 with at least two flanges 44 which run approximately parallel to the fuel rail and extend away from the pressure valve and on which the fuel rail 1 faces away at least one holding body 45 is present, which is connected to the flanges 44 by means of screws 46.
  • the pressure control valve 8 has a larger diameter in the radial direction in the area of the flare ring 24 than the guide bore 47 of the receiving bush 3, into which the pressure control valve 8 is inserted, so that the flare ring 24 bears against the flanges 44.
  • the holding body 45 has an angular shoulder 49 which engages on the flanged ring 24 opposite the flanges 44 and fixes the pressure control valve 8 in the axial direction on the flanges 44 by means of the screw connection 46.
  • the angular shoulder 49 can be ring-shaped and be provided with a push-through opening 50 through which the cover 20 of the pressure control valve projects.
  • the exemplary embodiment according to FIG. 2 differs from the exemplary embodiment according to FIG. 1 only in that the sealing groove 51 for the elastic sealing ring 43 is arranged on the end of the pressure regulating valve 8 facing the bottom 7 of the receiving bushing 3 and in both the radial and the axial directions Bottom 7 is open so that the sealing ring 43 inserted into the sealing groove 51 by clamping the pressure control valve 8 by means of the holding body 45 in the axial direction and seals.
  • the pressure control devices according to Figures 1 and 2 have the advantage that they can be made very small because of the only one required sealing ring 43 on the circumference of the pressure control valve and thereby also rotates and fixes the pressure control valve 8 in the receptacle 3 to adapt to different engine types can be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP87101609A 1986-03-08 1987-02-06 Dispositif de régulateur de pression Expired EP0236752B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863607812 DE3607812A1 (de) 1986-03-08 1986-03-08 Druckregelvorrichtung
DE3607812 1986-03-08

Publications (2)

Publication Number Publication Date
EP0236752A1 true EP0236752A1 (fr) 1987-09-16
EP0236752B1 EP0236752B1 (fr) 1989-12-13

Family

ID=6295917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101609A Expired EP0236752B1 (fr) 1986-03-08 1987-02-06 Dispositif de régulateur de pression

Country Status (4)

Country Link
US (1) US4741315A (fr)
EP (1) EP0236752B1 (fr)
JP (1) JP2556505B2 (fr)
DE (2) DE3607812A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606831A1 (fr) * 1986-11-18 1988-05-20 Weber Srl Collecteur de carburant avec regulateur de pression integre pour le dispositif d'injection de carburant d'un moteur a combustion interne
FR2615298A1 (fr) * 1987-05-15 1988-11-18 Bosch Gmbh Robert Regulateur de pression comprenant une gorge d'etancheite limitee axialement par une bague situee entre le carter de soupape et le manchon de reception
WO1990003513A1 (fr) * 1988-09-28 1990-04-05 Siemens Aktiengesellschaft Conduite de carburant a regulateur de pression integre
GB2226111A (en) * 1988-11-25 1990-06-20 Weber Srl Pressure regulating device
US6649380B1 (en) 2002-02-28 2003-11-18 Canon Kabushiki Kaisha Method for controlling molecular weight of polyhydroxyalkanote constituted on units containing residue of pheynyl-, thienyl-, or cyclohexyl-structure in side chain of molecule

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8801816U1 (fr) * 1988-02-12 1989-06-15 Robert Bosch Gmbh, 7000 Stuttgart, De
US5094211A (en) * 1988-09-28 1992-03-10 Siemens Automotive L.P. Automotive fuel rail assemblies with integral means for mounting fuel regulator
DE3900986C2 (de) * 1989-01-14 1998-04-16 Bosch Gmbh Robert Druckregelvorrichtung
DE4007436C2 (de) * 1990-03-09 1996-07-18 Bayerische Motoren Werke Ag Befestigungsanordnung für einen Druckregler an einer Kraftstoffversorgungsanlage
JP2546924Y2 (ja) * 1990-09-30 1997-09-03 エヌオーケー株式会社 プレッシャレギュレータの取付構造
US5076320A (en) * 1990-10-19 1991-12-31 Siemens Automotive L.P. Fuel rail mounted fuel pressure regulator
US5146896A (en) * 1991-07-25 1992-09-15 Siemens Automotive L.P. Mounting fuel injection system components on a fuel rail
US5579739A (en) * 1994-01-14 1996-12-03 Walbro Corporation Returnless fuel system with demand fuel pressure regulator
DE19522042A1 (de) * 1995-06-17 1996-12-19 Bosch Gmbh Robert Druckregelvorrichtung
US5967120A (en) * 1996-01-16 1999-10-19 Ford Global Technologies, Inc. Returnless fuel delivery system
DE19737600A1 (de) * 1997-08-28 1999-03-04 Bayerische Motoren Werke Ag Druckregelventil zur Systemdruckregelung einer Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen
JPH11242940A (ja) 1997-12-26 1999-09-07 Toshiba Corp カラー受像管
DE10006894A1 (de) * 1999-02-18 2000-08-24 Usui Kokusai Sangyo Kk Kraftstoffzufuhrleitungsanordnung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816479A1 (de) * 1978-04-15 1979-10-25 Bosch Gmbh Robert Druckregelventil
GB2024933A (en) * 1978-06-23 1980-01-16 Nissan Motor Fuel pressure regulator for a fuel injection system of an internal combustionengine
EP0172607A1 (fr) * 1984-06-21 1986-02-26 General Motors Corporation Régulateur de pression de carburant
DE3446325A1 (de) * 1984-12-19 1986-06-19 Robert Bosch Gmbh, 7000 Stuttgart Druckregelvorrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5371726A (en) * 1976-12-08 1978-06-26 Aisin Seiki Co Ltd Pressure regulator
US4205637A (en) * 1976-12-13 1980-06-03 Toyota Jidosha Kogyo Kabushiki Kaisha Electronic fuel injection system for an internal combustion engine having electromagnetic valves and a fuel damper upstream thereof
IT1105856B (it) * 1978-02-07 1985-11-04 Weber Edoardo Spa Fabbrica Regolatore di pressione per impianti di iniezione di motori a combustione interna
DE3307241A1 (de) * 1983-03-02 1984-09-06 Robert Bosch Gmbh, 7000 Stuttgart Aggregat zum foerdern von kraftstoff, insbesondere aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeugs
DE3326995A1 (de) * 1983-07-27 1985-02-07 Bosch Gmbh Robert Daempferelement
JPS6047863A (ja) * 1983-08-24 1985-03-15 Nippon Denso Co Ltd 燃料供給装置
JPS60240866A (ja) * 1984-05-15 1985-11-29 Nippon Denso Co Ltd 内燃機関の燃料噴射装置
US4646700A (en) * 1985-04-17 1987-03-03 Walbro Corporation Pressure regulator for liquid fuel system
US4633901A (en) * 1986-04-03 1987-01-06 Parr Manufacturing, Inc. Pressure regulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816479A1 (de) * 1978-04-15 1979-10-25 Bosch Gmbh Robert Druckregelventil
GB2024933A (en) * 1978-06-23 1980-01-16 Nissan Motor Fuel pressure regulator for a fuel injection system of an internal combustionengine
EP0172607A1 (fr) * 1984-06-21 1986-02-26 General Motors Corporation Régulateur de pression de carburant
DE3446325A1 (de) * 1984-12-19 1986-06-19 Robert Bosch Gmbh, 7000 Stuttgart Druckregelvorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606831A1 (fr) * 1986-11-18 1988-05-20 Weber Srl Collecteur de carburant avec regulateur de pression integre pour le dispositif d'injection de carburant d'un moteur a combustion interne
FR2615298A1 (fr) * 1987-05-15 1988-11-18 Bosch Gmbh Robert Regulateur de pression comprenant une gorge d'etancheite limitee axialement par une bague situee entre le carter de soupape et le manchon de reception
GB2204940A (en) * 1987-05-15 1988-11-23 Bosch Gmbh Robert Pressure-regulating valve
GB2204940B (en) * 1987-05-15 1991-02-13 Bosch Gmbh Robert Pressure-regulating device
WO1990003513A1 (fr) * 1988-09-28 1990-04-05 Siemens Aktiengesellschaft Conduite de carburant a regulateur de pression integre
GB2226111A (en) * 1988-11-25 1990-06-20 Weber Srl Pressure regulating device
US6649380B1 (en) 2002-02-28 2003-11-18 Canon Kabushiki Kaisha Method for controlling molecular weight of polyhydroxyalkanote constituted on units containing residue of pheynyl-, thienyl-, or cyclohexyl-structure in side chain of molecule

Also Published As

Publication number Publication date
US4741315A (en) 1988-05-03
DE3607812A1 (de) 1987-09-10
JPS62214267A (ja) 1987-09-21
EP0236752B1 (fr) 1989-12-13
DE3761160D1 (de) 1990-01-18
JP2556505B2 (ja) 1996-11-20

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