EP0636782A1 - Niveaumess-Sonde/Kraftstofförderpumpe Kombination, insbesondere für Fahrzeugkraftstoffbehälter - Google Patents

Niveaumess-Sonde/Kraftstofförderpumpe Kombination, insbesondere für Fahrzeugkraftstoffbehälter Download PDF

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Publication number
EP0636782A1
EP0636782A1 EP94202155A EP94202155A EP0636782A1 EP 0636782 A1 EP0636782 A1 EP 0636782A1 EP 94202155 A EP94202155 A EP 94202155A EP 94202155 A EP94202155 A EP 94202155A EP 0636782 A1 EP0636782 A1 EP 0636782A1
Authority
EP
European Patent Office
Prior art keywords
pump
tank
pocket
fixed
elastic
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.)
Ceased
Application number
EP94202155A
Other languages
English (en)
French (fr)
Inventor
Giovanni Bianco
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.)
Bitron B SpA
Original Assignee
Bitron B SpA
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 Bitron B SpA filed Critical Bitron B SpA
Publication of EP0636782A1 publication Critical patent/EP0636782A1/de
Ceased 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
    • 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
    • F02M37/103—Mounting pumps on fuel tanks

Definitions

  • This invention relates to a level probe/fuel feed pump combination in particular for a motor vehicle tank.
  • Fuel feed pumps are required to overcome the head present between the tank and the engine.
  • feed pumps integral with the fuel level indicator probe have been conceived in order to form a monolithic unit which can be quickly fixed to the tank upper wall so that the pump lies within the tank.
  • the object of the present invention is to obviate the aforesaid drawbacks by providing a level probe/fuel feed pump combination which is safe against explosion as is a pump housable along the pipe, while at the same time being simple and economical to install as it forms part of a combination which also comprises the level probe.
  • the fuel feed pump is housed together with the level probe using the available space of the tank, and dips directly into the tank.
  • the pump however remains outside said tank and poses no safety problems.
  • the level probe/fuel feed pump combination of the invention defined hereinafter simply as the combination and indicated overall by 1, comprises substantially a flange 2, a level probe 3 and a feed pump 4.
  • the flange 2 which is usually of circular plan, comprises through holes 5 in its edge for fixing it by screws (not shown) to the outside edge of an aperture provided in the upper wall of the tank, not shown.
  • the flange 2 supports the level probe 3, which is therefore located within the tank.
  • the level probe 3 is of known type and is therefore not described. It is preferably of the type described in Italian patent application 68525 A/81.
  • a hydraulic seal between the pump 4 and the base 7 of the pocket 6 is achieved at said point by interposing between said two elements an elastic cowl 18 fixed by hose clamps 8 at its larger diameter edge 17 to the pocket 6 and fixed at its smaller diameter edge 23 to the pump 4.
  • the pocket 6 has a shape obtained by joining together along an axis 10 three aligned tubular elements 9, 10, 11 having diameters which progressively decrease towards the base 7.
  • the diameter difference between the first tubular element 9 and the second 10 results in a first projection 13, which acts as a support for an elastic element 14 supporting the pump 4.
  • the elastic support element 14 for the pump 4 has an "L" cross-section, is fixed to the pump 4 by a hose clamp 15 and rests on the first projection 13.
  • the diameter difference between the second tubular element 10 and the third 11 results in a second projection 16, to which the larger diameter edge 17 of the elastic cowl 18 is fixed, its smaller diameter edge 23 being fixed to the suction pipe stub 19 of the pump 4.
  • the elastic cowl is of double "U" cross-section.
  • On the pipe stub 19 there is mounted a tubular element 20 with which there is associated a filter 21 of the type which deforms elastically by the effect of the variation in distance between the upper and lower walls of the tank.
  • the pump can draw from the bottom of the tank until it is totally empty without being influenced by any tank deformation.
  • the pump is mounted on the flange 2 as follows.
  • the elastic element 14 is fixed to the pump 4 by the hose clamp 15, and the elastic cowl 18 is fixed to the pipe stub 19 by one of the two hose clamps 8.
  • the elasticity of the cowl 18 enables it to be folded over temporarily against the pipe stub 19 so that this latter, even though fixed to the elastic cowl 18, can be easily passed through the hole 22 in the base 7 of the pocket 6.
  • the pump comes to rest when the elastic element 14 encounters the first projection 13.
  • the elastic cowl 18 is fixed to the pocket 6 by the remaining hose clamp 8 at the second projection 16.
  • the combination 1 is ready to be fixed to the tank by screws, not shown, engaging the holes 5.
  • a single block 22 for the electrical connections relative to the level probe and pump 4 can be provided on that surface of the flange 2 facing outwards from the tank.
  • the described level probe/feed pump combination 1 can be very easily mounted on the tank and is therefore of merit as it attains its objects in a simple and economical manner. However if for any reason the feed pump 4 is subjected to a force tending to pull it out of the pocket 6 the resistance offered by the elastic cowl 18 along may not be sufficient to resist this. It is hence possible that as a result of vehicle jolting or collision the pump 4 overcomes the resistance offered by an elastic cowl 18 which has undergone ageing.
  • the first projection 13, the elastic element 14 and the hose clamp 15 which in the first embodiment of the combination 1 formed the means for fixing the upper part of the pump 4 are replaced by a second flange 24, screws 25, a first gasket 26 and a third projection 27.
  • the second flange 24 comprises at least one pair of first annular projections 28 and is prolonged as far as the lateral surface of the feed pump 4.
  • the first gasket 26 is of double "U" cross-section and also comprises at least one pair of second annular projections 29.
  • the second flange 24 is fixed to the first flange 2 by the screws 25. When the flanges 24 and 2 have been fixed, the first gasket 26 has one of its annular projections 29 inserted between the annular projections 28 of the flange 24.
  • the remaining annular projection 29 acts mainly to form a hydraulic seal against the body of the pump 4 and rests against the third projection 27 to provide mechanical locking.
  • the first gasket 26 is initially associated with the second flange 24, which is then screwed into position by the screws 25, to lock the pump 4 in its operating position.
  • the hose clamp 8, the second projection 16, the edge 17 and the elastic cowl 18 which in the first embodiment of the combination 1 formed the means for fixing the lower part of the pump 4 are replaced by a second gasket 30 and an annular seat 31.
  • the second gasket 30 When mounting, the second gasket 30 is arranged within the annular seat 31 after introducing the tubular element 20 so as to fix it to the base 7 of the pocket 6.
  • the first gasket 26 is initially associated with the second flange 24.
  • the pump 4 is inserted into the pocket 6 such that the pipe stub is locked within the annular seat 31 by the second gasket 30.
  • the second flange 24 is then screwed into position by the screws 25 to lock the pump 4 in its operating position.
  • the pump 4 is therefore fixed to and supported on the walls of the pocket 6 by gaskets 26 and 30 which also act as elastic supports and therefore do not transmit the vibration or noise deriving from the operation of the pump 4.
  • the pump 4 can therefore not be withdrawn even by being deliberately pulled outwards from the pocket 6, for instance by pulling against the hydraulic and electrical connections emerging from it. This even applies in the case of complete deterioration of the first gasket 5.
  • the third projection 27 would then interfere with the second flange 24 to prevent the pump 4 emerging from the pocket 6.
  • the combination 1A has also been provided with a stilling vessel 32 which can be fixed elastically to the pump 4 so as to be adaptable to the position of the tank base, as can the tubular element 20 by being of telescopic or bellows type.

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)
EP94202155A 1993-07-30 1994-07-25 Niveaumess-Sonde/Kraftstofförderpumpe Kombination, insbesondere für Fahrzeugkraftstoffbehälter Ceased EP0636782A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI930648 IT230631Y1 (it) 1993-07-30 1993-07-30 Gruppo sonda di livello-pompa di alimentazione carburante in particolare per un serbatoio di autoveicoli
ITMI930648 1993-07-30

Publications (1)

Publication Number Publication Date
EP0636782A1 true EP0636782A1 (de) 1995-02-01

Family

ID=11365616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202155A Ceased EP0636782A1 (de) 1993-07-30 1994-07-25 Niveaumess-Sonde/Kraftstofförderpumpe Kombination, insbesondere für Fahrzeugkraftstoffbehälter

Country Status (2)

Country Link
EP (1) EP0636782A1 (de)
IT (1) IT230631Y1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2830283A1 (fr) * 2001-09-28 2003-04-04 Marwal Systems Reservoir pour vehicule automobile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6155361A (ja) * 1984-08-28 1986-03-19 Nissan Motor Co Ltd 燃料タンク
US4672937A (en) * 1986-05-19 1987-06-16 General Motors Corporation Fuel pump system
DE3914081A1 (de) * 1989-04-28 1990-11-08 Bosch Gmbh Robert Vorrichtung zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
WO1990013739A1 (en) * 1989-05-05 1990-11-15 Carter Automotive Company, Inc. Fuel supply module
US5110265A (en) * 1991-01-16 1992-05-05 Aisan Kogyo Kabushiki Kaisha Fuel pump
GB2271327A (en) * 1992-10-10 1994-04-13 Ford Motor Co A fuel tank reservoir.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6155361A (ja) * 1984-08-28 1986-03-19 Nissan Motor Co Ltd 燃料タンク
US4672937A (en) * 1986-05-19 1987-06-16 General Motors Corporation Fuel pump system
DE3914081A1 (de) * 1989-04-28 1990-11-08 Bosch Gmbh Robert Vorrichtung zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
WO1990013739A1 (en) * 1989-05-05 1990-11-15 Carter Automotive Company, Inc. Fuel supply module
US5110265A (en) * 1991-01-16 1992-05-05 Aisan Kogyo Kabushiki Kaisha Fuel pump
GB2271327A (en) * 1992-10-10 1994-04-13 Ford Motor Co A fuel tank reservoir.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 218 (M - 503) 30 July 1986 (1986-07-30) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2830283A1 (fr) * 2001-09-28 2003-04-04 Marwal Systems Reservoir pour vehicule automobile

Also Published As

Publication number Publication date
ITMI930648V0 (it) 1993-07-30
IT230631Y1 (it) 1999-06-09
ITMI930648U1 (it) 1995-01-30

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