EP0921299B1 - Dispositif pour l'étanchéification d'un dispositif de pompage de carburant dans un réservoir de carburant - Google Patents

Dispositif pour l'étanchéification d'un dispositif de pompage de carburant dans un réservoir de carburant Download PDF

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Publication number
EP0921299B1
EP0921299B1 EP98121686A EP98121686A EP0921299B1 EP 0921299 B1 EP0921299 B1 EP 0921299B1 EP 98121686 A EP98121686 A EP 98121686A EP 98121686 A EP98121686 A EP 98121686A EP 0921299 B1 EP0921299 B1 EP 0921299B1
Authority
EP
European Patent Office
Prior art keywords
tank
fuel
flange
cover
cup
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.)
Expired - Lifetime
Application number
EP98121686A
Other languages
German (de)
English (en)
Other versions
EP0921299A2 (fr
EP0921299A3 (fr
Inventor
Stephan Kleppner
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0921299A2 publication Critical patent/EP0921299A2/fr
Publication of EP0921299A3 publication Critical patent/EP0921299A3/fr
Application granted granted Critical
Publication of EP0921299B1 publication Critical patent/EP0921299B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a device for sealing a usable in a fuel tank Fuel delivery unit according to the preamble of claim 1.
  • a known Solution as e.g. is known from DE 44 44 854 A1, the fuel delivery unit arranged in a pot and inserted into a fuel tank.
  • US 4,672,937 relates to a fuel pump.
  • the fuel pump is in one Fuel tank let in. There are line connections in the cover area of the fuel pump guided by this, which provided with double seals on the inside and the outside are.
  • the fuel delivery unit is in a tubularly configured chamber embedded, which in turn by means of a spiral spring to the bottom of a fuel tank is employed.
  • FR 2 062 303 A shows a fuel delivery device which is connected to a tank flange a vibration membrane is attached.
  • the vibration membrane Vibration transmission between the tank of the motor vehicle and the conveyor avoided.
  • the vibration membrane is screwable by means of an annular Clamping ring attached to a plate of the fuel tank and is via a coil spring element hired to a fuel delivery unit.
  • the fuel delivery unit which after insertion into a fuel tank is sealed from this as one compact unit formed in a housing, which within a Pot is added.
  • the pot is covered by a cover which at least one inlet connection and an E-connection of the compact Are passed through, the pot with the unit by means of a Tank insert closure that can be attached to a tank flange in the fuel tank can be used.
  • a Tank insert closure that can be attached to a tank flange in the fuel tank can be used.
  • an elastic bellows element is arranged on the tank flange.
  • a the bellows element on the cover and against the tank insert closure pressing spring is provided which presses the pot against the bottom of the tank suppressed. It is also possible that the pot is at the bottom of the fuel tank is attached.
  • the cover pressing spring By means of on the one hand against the tank insert closure and on the other hand against the cover pressing spring ensures that the fuel delivery unit is pressed against the bottom of the tank.
  • This Flexible and spring-loaded sealing device is the height of the pot and thus the connection geometry largely independent of the tank height. This makes it possible to use standard solutions without special constructions, for example for the connection to the flange, used according to customer wishes or customer requirements Need to become.
  • the bellows element is preferably on the pot and on the tank flange attached.
  • the bellows element solution according to the invention also provides a inexpensive solution because it is independent of the tank height and the tank geometry can be used for numerous applications.
  • the bellows element is in the fuel tank inserted and fastened tank insert closure between the Tank flange and an annular flange held on the tank insert closure.
  • the ring flange is pressed against the inside of the cover by the spring of the tank insert closure, the ring flange being a circumferential Has nose.
  • the bellows element On the side of the ring flange facing the tank flange the bellows element is supported or clamped from its nose, while on the inward side of the nose of the ring flange the spring is supported.
  • the bellows element is by means of the Spring stretchable or compressible against the action of spring force, that the pot when inserted and fastened in the fuel tank Tank insert closure on the tank flange of the fuel tank opposite wall essentially abuts. This is usually the case Tank bottom. However, it is also possible that between the bottom of the pot Fuel delivery unit and the tank bottom another, if necessary there is also elastic support.
  • the bellows element is preferably made of rubber.
  • the tank insert closure is preferably on the tank flange by means of a Screwable thread. Since the bellows element has an outer flange, which between the part of the ring flange facing outwards from the nose and the tank flange when screwing on the cover of the tank insert cap depending on the screwing force, is held on this point with a corresponding clamping effect by screwing the Tank insert closure achieved the appropriate sealing effect.
  • the E connection is integrated Plug formed in the cover.
  • the plug is preferably in the cover is fully integrated, i.e. in the case of training the Rubber cover vulcanized into the cover.
  • the electrical connection is also cast into the cover, so that the connection cables passed through the cover are sufficiently tight is sealed.
  • the figure shows the device according to the invention for sealing an in a fuel tank used fuel delivery unit.
  • the fuel delivery unit 2 is used in a fuel tank 1, the actual fuel delivery unit 2 having a housing 3 and is surrounded by a pot 4.
  • the fuel delivery unit points hydraulic connections for feeding uncleaned and for draining of cleaned fuel and an electrical connection for supply of the electric motor of the fuel delivery unit 2 with drive energy for Driving the fuel delivery pump of the fuel delivery unit 2.
  • the pot 4 is provided with a cover 5, which i.a. for reasons the space saving essentially complies with the hydraulic connections of the fuel delivery unit 2 is formed.
  • the cover 5 has on it directed towards the upper edges of the pot Outside an angular recess so that a substantially radially extending flange section and a substantially axially extending Flange section are formed on the cover.
  • the terms “Radial” and “axial” refer to the axis of rotation of the electric motor of the fuel delivery unit.
  • the cover has at least two bushings: a bushing for an inlet connection 6 and a bushing for an E connection 7.
  • the E-connector 7 is through a cover 5 penetrating Cable or formed by several cables, the cables in the Cover are integrated so that reliable tightness is guaranteed is.
  • the cover 5 is designed such that they are essentially over the entire length of the inlet connection 6 this is arranged enveloping.
  • the area of the connection end of the inlet connection 6 on the fuel delivery unit 2 is reliable for reasons of Tightness between the cover 5 and the outer circumference of the an O-ring 14 is provided at the lower end of the inlet connector 6.
  • a tank flange 8 is provided, which has an external thread.
  • On the inner surface in the The area of the bend of the tank insert closure 9 is an annular flange 12 provided, which by an essentially in an axial Direction of the fuel delivery unit 2 nose in two areas is divided.
  • the one facing the bend of the tank insert closure 9 Part of the ring flange 12 clamps in the screwed to the tank flange 8 State an outward-facing flange portion of a Bellows element 10, which is seen on it in the axial direction opposite side has a radially inward flange. This inward flange is designed to open the outside of the radial flange portion of the cover 5 fits snugly.
  • the spring 11 also causes the fuel delivery unit 2 to the tank wall 13 is pressed, which of those carrying the tank flange 8 Wall of the fuel tank 1 is opposite.
  • the electrical connection lines from the electric motor of the fuel delivery unit 2 are from its direct connection to one in the Cover 5 integrated, preferably injected tab connector.
  • the corresponding connectors are then on this flat connector connected.
  • the device according to the invention for sealing a in a fuel tank 1 usable fuel delivery unit 2 thus delivers in addition a uniform sealing effect at different tank heights themselves taking into account tank breathing due to temperature and / or Pressure differences a reliable and sufficient sealing effect.

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)

Claims (10)

  1. Réservoir de carburant (1), comprenant un bloc-pompe de transfert de carburant (2) logé dans un boítier (3) à l'intérieur d'un pot (4) en vue du transport d'un flux de carburant à partir du réservoir (1), lequel bloc-pompe est logé sous forme d'unité compacte dans le boítier (3) à l'intérieur du pot (4) qui comporte un couvercle (5) à travers lequel passent au moins une tubulure d'entrée (6) et un raccordement électrique (7), le pot (4) pouvant être inséré dans le réservoir (1), avec ladite unité, au moyen d'une fermeture à insertion du réservoir (9) qui peut être fixée sur une bride de réservoir (8),
    caractérisé en ce que,
    entre le couvercle (5) du pot (4) et la bride de réservoir (8) est disposé un soufflet élastique (10) compensant les différences de hauteur et précontraint à l'aide d'un ressort (11) qui comprime le soufflet (10) contre le couvercle (5) et contre la fermeture (9).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    le pot (4) est fixé au plancher du réservoir (1).
  3. Dispositif selon la revendication 1,
    caractérisé en ce que
    le soufflet (10) est suffisamment extensible au moyen du ressort (11) ou compressible contre l'effet de la tension de ressort pour que, lorsque la fermeture (9) est insérée et fixée dans le réservoir (1), le pot (4) adhère pour l'essentiel à la paroi du réservoir (13) qui fait face à la bride (8) du réservoir (1).
  4. Dispositif selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le soufflet (10) est fixé sur le pot (4) et sur la bride de réservoir (8).
  5. Dispositif selon l'une des revendications 1 à 4,
    caractérisé en ce que
    lorsque la fermeture (9) est insérée et fixée dans le réservoir (1), le souf flet (10) est maintenu sur la fermeture (9) entre la bride de réservoir (8 et une bride annulaire (12).
  6. Dispositif selon l'une des revendications 1 à 5,
    caractérisé en ce que
    le soumet (10) est en caoutchouc.
  7. Dispositif selon l'une des revendications 1 à 6,
    caractérisé en ce que
    entre la tubulure entrée (6) et le couvercle (5), est prévu un joint torique (14).
  8. Dispositif selon l'une des revendications 1 à 7,
    caractérisé en ce que
    la fermeture (9) peut être vissée sur la bride de réservoir (8) au moyen d'un filetage.
  9. Dispositif selon l'une des revendications 1 à 8,
    caractérisé en ce que
    le raccordement électrique (7) a la forme d'un connecteur intégré dans le couvercle (5).
  10. Dispositif selon l'une des revendications 1 à 8,
    caractérisé en ce que
    le raccordement électrique (7) s'effectue à l'aide de câbles coulés dans le couvercle (5) et traversant celui-ci.
EP98121686A 1997-12-03 1998-11-13 Dispositif pour l'étanchéification d'un dispositif de pompage de carburant dans un réservoir de carburant Expired - Lifetime EP0921299B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19753674A DE19753674A1 (de) 1997-12-03 1997-12-03 Vorrichtung zum Abdichten eines Kraftstoff-Förderaggregates in einem Kraftstofftank
DE19753674 1997-12-03

Publications (3)

Publication Number Publication Date
EP0921299A2 EP0921299A2 (fr) 1999-06-09
EP0921299A3 EP0921299A3 (fr) 2000-03-15
EP0921299B1 true EP0921299B1 (fr) 2004-09-08

Family

ID=7850639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121686A Expired - Lifetime EP0921299B1 (fr) 1997-12-03 1998-11-13 Dispositif pour l'étanchéification d'un dispositif de pompage de carburant dans un réservoir de carburant

Country Status (2)

Country Link
EP (1) EP0921299B1 (fr)
DE (2) DE19753674A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2356180B (en) * 1999-11-12 2003-03-19 Dana Corp In-tank fuel delivery system
DE10129436A1 (de) 2001-06-19 2003-01-02 Bosch Gmbh Robert Kraftstoffversorgungseinrichtung für ein Kraftfahrzeug
DE10330452A1 (de) * 2003-07-05 2005-02-24 Daimlerchrysler Ag Haltevorrichtung zum Fixieren einer Kraftstoffpumpe in einem Schwalltopf
JP4329037B2 (ja) * 2004-12-28 2009-09-09 株式会社デンソー 燃料供給装置
DE102007045178A1 (de) * 2007-09-21 2009-04-02 Robert Bosch Gmbh Kraftstofffördermodul

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE44854C (de) H. DE JONG in Amsterdam, Spiegelplein Nr. 229 Apparat zum Nachahmen der Holzfasern
US2963203A (en) * 1958-11-21 1960-12-06 Tokheim Corp Fuel pump mounting
DE1947505A1 (de) * 1969-09-19 1971-06-16 Bosch Gmbh Robert Aufhaengevorrichtung fuer eine Elektrokraftstoffpumpe
US4590964A (en) * 1985-04-26 1986-05-27 General Motors Corporation Noise isolation for a fuel system
US4672937A (en) * 1986-05-19 1987-06-16 General Motors Corporation Fuel pump system
DE8705726U1 (de) * 1987-04-18 1987-06-25 Pierburg GmbH, 4040 Neuss Brennstoffördereinrichtung für eine Brennkraftmaschine
FR2681293B1 (fr) * 1991-09-12 1993-12-17 Plastic Omnium Cie Dispositif pour extraire du carburant du fond d'un reservoir deformable.
DE19615081A1 (de) * 1996-04-17 1997-10-23 Bosch Gmbh Robert Einrichtung zur Versorgung einer Brennkraftmaschine mit Kraftstoff

Also Published As

Publication number Publication date
EP0921299A2 (fr) 1999-06-09
DE59811922D1 (de) 2004-10-14
DE19753674A1 (de) 1999-06-10
EP0921299A3 (fr) 2000-03-15

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