EP2060773A2 - Unité d'alimentation en carburant - Google Patents

Unité d'alimentation en carburant Download PDF

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Publication number
EP2060773A2
EP2060773A2 EP08105505A EP08105505A EP2060773A2 EP 2060773 A2 EP2060773 A2 EP 2060773A2 EP 08105505 A EP08105505 A EP 08105505A EP 08105505 A EP08105505 A EP 08105505A EP 2060773 A2 EP2060773 A2 EP 2060773A2
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
fuel
delivery unit
components
fuel delivery
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
EP08105505A
Other languages
German (de)
English (en)
Other versions
EP2060773A3 (fr
Inventor
Bernd Rumpf
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2060773A2 publication Critical patent/EP2060773A2/fr
Publication of EP2060773A3 publication Critical patent/EP2060773A3/fr
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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/46—Filters structurally associated with 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
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks

Definitions

  • the invention relates to a fuel delivery unit for conveying fuel from a fuel tank to an internal combustion engine of a motor vehicle, comprising a plurality of components, the components having a flange for closing an opening of the fuel tank, a swirl pot connected to the flange via support elements, a fuel pump arranged therein, a fuel filter, a pressure regulator, a level sensor and a pump pre-filter, and means for connecting each individual component to a ground potential of the motor vehicle.
  • electrostatic charges When lying in fuel, fuel flowed around or flowed through components electrostatic charges can form.
  • the formation of the electrostatic charges depend on the electrical conductivity of the fuel used, the external conditions, eg. B. Humidity, and the flow rate of the fuel to or through the corresponding component.
  • the electrostatic charge Depending on the type and size of the electrostatic charge and the conditions inside the fuel tank, z.
  • oxygen content there is a corresponding risk that degrade electrostatic charges by means of a sparkover.
  • Such a flashover can in the worst case lead to ignition of the fuel mixture.
  • one possibility for dissipating electrostatic charges is to connect the corresponding component directly to the ground potential of the motor vehicle via an electrical line. Due to the additional expense of material, installation and installation of the electrical line, this form of dissipation of electrostatic charges is particularly costly.
  • a pressure regulator can be formed electrically conductive with the metallic housing of a fuel pump for dissipating electrostatic charges.
  • the electrically conductive connection may be an electrical line or a conductive material, e.g. As metal or electrically conductive plastic, be.
  • the invention is therefore an object of the invention to provide a fuel delivery unit, which is reliably protected against electrostatic charges, the effort to dissipate electrostatic charges should be kept as low as possible.
  • the object is achieved in that flows through or flowed through by fuel components over at least two electrically conductive connections are connected to the ground potential.
  • the provision of at least two electrically conductive connections to a ground potential ensures that electrostatic charges of components through which the fuel flows or is flushed are still reliably discharged even when one of the electrically conductive connections is interrupted.
  • the construction of dangerous total capacities is avoided.
  • the device according to the invention thereby has a much higher security.
  • a particularly good dissipation of electrostatic charges is achieved with an electrically conductive connection in the form of an electrical line or by means of the metal-to-metal connection.
  • the advantage of the electrically conductive connection in the form of an electrical line, preferably a cable, is that the electrical line can be connected by means of a frictional or material connection. By this type of connection, the risk of the formation of contact resistance, which may worsen the dissipation of the charges excluded.
  • At least one of the electrically conductive connections is made from an electrically conductive plastic to a metal. This has the advantage that electrically conductive connections are also made possible between components made of different materials.
  • the dissipation of electrostatic charges by at least one electrically conductive connection of an electrically conductive plastic to an electrically conductive plastic has the advantage that by the use of the plastic improved corrosion resistance in Fuel and a lower weight associated with improved processability can be achieved.
  • the number of electrically conductive connections can be reduced in a fuel delivery unit according to a further advantageous embodiment, characterized in that in at least one of the electrically conductive connections of a component with the ground potential, a further component is interposed.
  • POM polyoxymethylene
  • PA polyamide
  • the fuel delivery unit 1 in FIG. 1 is shown partially cut to better illustrate the components.
  • the fuel delivery unit 1 consists of a flange 2, which is designed such that it closes an opening of a fuel tank, not shown, into which the fuel delivery unit 1 is inserted.
  • the flange 2 accommodates a fine filter 3 designed as a fuel filter, which consists of an upper housing part 4 and a lower housing part 5.
  • the two housing parts 4, 5 enclose the filter element 6.
  • the lower housing part 5 has a first nozzle 7 and a second nozzle 8, in which a pressure regulator 9 is inserted.
  • the support elements 11 each consist of a tube 12 around which a coil spring 13 is arranged. With the flange 2 regions facing away from the tubes 12, these are connected via guides with a swirl pot 14. The coil springs 13 are supported on the flange 2 and on the guides of the swirl pot 14, so that the swirl pot 14 is biased against the bottom of the fuel tank.
  • a level sensor 15 is attached to determine the amount of fuel in the fuel tank.
  • a pump holder 16 is fixed with a fuel pump 17 held therein.
  • the fuel pump 17 has an outlet nozzle 18, which is connected via a feed line, not shown, with a nozzle 8 of the housing lower part 5.
  • the fuel pump 17 is connected to a pump pre-filter 19 and a suction jet pump 20.
  • the suction jet pump 20 has a seal 21, which encloses the inlet opening, not shown, in the bottom 22 of the swirl pot 14 and at the same time decouples the suction jet pump 20 from the swirl pot 14.
  • the suction jet pump 20 sucks fuel from the fuel tank and delivers it to the surge pot 14.
  • the suction jet pump 20 is driven by the fuel pump 17 by supplying a subset of the fuel pumped by the fuel pump 17 as a propulsion jet to the suction jet pump 20.
  • the fuel pump 17 sucks fuel from the swirl pot 14 and delivers it via the outlet port 18 and the feed line to the fine filter 3.
  • the filtered fuel is conveyed via a flow pipe 23 on to the internal combustion engine, not shown. From the fuel pump 17 too much subsidized fuel is returned via the pressure regulator 9 in the swirl pot 14.
  • FIG. 2 shows the individual components of the fuel delivery unit 1 in an exploded view.
  • the lines between the individual components indicate the individual electrically conductive connections, the line representation indicating the type of electrically conductive connection.
  • Each component has at least two electrically conductive connections.
  • the ground potential is applied to the plug 24 shown schematically.
  • Both the level sensor and the fuel pump 17 are connected via their illustrated as solid lines electrical lines 25 to the plug 24 on the flange 2 to the ground potential.
  • the existing metal pressure regulator 9 is also connected to an electrical line 25 to the ground potential.
  • the metal components tube 12 and coil spring 13 have an electrically conductive connection of metal to metal, which is shown as a dotted line 26.
  • Heater 28 are made of POM with admixtures of carbon in the form of soot.
  • Electrically conductive connections between components of electrically conductive plastic are shown by dashed lines 29.
  • the electrically conductive connections between components of electrically conductive plastic and components made of metal are shown with dash-dot lines 30.

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)
EP08105505A 2007-11-16 2008-10-07 Unité d'alimentation en carburant Ceased EP2060773A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007054857A DE102007054857A1 (de) 2007-11-16 2007-11-16 Kraftstofffördereinheit

Publications (2)

Publication Number Publication Date
EP2060773A2 true EP2060773A2 (fr) 2009-05-20
EP2060773A3 EP2060773A3 (fr) 2010-03-10

Family

ID=40344617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105505A Ceased EP2060773A3 (fr) 2007-11-16 2008-10-07 Unité d'alimentation en carburant

Country Status (3)

Country Link
US (1) US7607419B2 (fr)
EP (1) EP2060773A3 (fr)
DE (1) DE102007054857A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857669B1 (fr) * 2013-10-04 2017-12-06 Mahle International GmbH Dispositif de filtre pour véhicule automobile
WO2018033194A1 (fr) * 2016-08-15 2018-02-22 Pierburg Pump Technology Gmbh Pompe à vide de groupe auxiliaire de bord de véhicule à moteur

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101138206B1 (ko) * 2010-01-12 2012-05-10 주식회사 코아비스 연료펌프모듈
DE102010054883A1 (de) * 2010-12-17 2012-06-21 Continental Automotive Gmbh Kraftstoff-Fördereinheit
DE102011078467A1 (de) 2011-06-30 2013-01-03 Robert Bosch Gmbh Kunststoffgehäuse
DE102013011409A1 (de) 2013-07-09 2015-01-15 Daimler Ag Baukastensystem für eine Mehrzahl von Bauvaraianten einer Kraftstofffördereinrichtung einer Verbrennungskraftmaschine
DE102013011417A1 (de) 2013-07-09 2015-01-15 Daimler Ag Kraftstofffördereinrichtung zum Fördern von Kraftstoff einer Verbrennungskraftmaschine
DE102013011416A1 (de) 2013-07-09 2015-01-15 Daimler Ag Ventilelement zum Einstellen oder Begrenzen eines Drucks einer Flüssigkeit
DE102013011371A1 (de) 2013-07-09 2015-01-15 Daimler Ag Saugstrahlpumpe, insbesondere für eine Kraftstofffördereinrichtung
CN104675589A (zh) * 2015-02-13 2015-06-03 重庆峰瑞塑料制品有限公司 一种直通式快速回油碳罐油箱盖
CN205154469U (zh) * 2015-10-27 2016-04-13 南车南京浦镇车辆有限公司 轨道车辆模块化燃油输送装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843019C1 (de) * 1998-09-19 2000-03-09 Bosch Gmbh Robert Fördereinrichtung für Kraftstoff
US20030084884A1 (en) * 2001-11-08 2003-05-08 Ulf Sawert Grounded fuel delivery module for fuel system
US20040074995A1 (en) * 2002-10-18 2004-04-22 Denso Corporation Fuel feed apparatus having conductive members grounded each other
US20060219003A1 (en) * 2005-04-05 2006-10-05 Forgue John R Electrostatic charge control for in-tank fuel module components

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076920B2 (en) * 1990-08-30 1998-05-05 Allied Signal Inc Electrostatically dissipative fuel filter
US5647330A (en) * 1996-07-25 1997-07-15 General Motors Corporation Fuel sender for motor vehicle
DE19712155A1 (de) * 1997-03-22 1998-09-24 Bosch Gmbh Robert Kraftstoffversorgungsanlage
DE19838555A1 (de) * 1997-08-30 1999-03-04 Mannesmann Vdo Ag Sicherheitsvorrichtung für einen Kraftstoffbehälter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843019C1 (de) * 1998-09-19 2000-03-09 Bosch Gmbh Robert Fördereinrichtung für Kraftstoff
US20030084884A1 (en) * 2001-11-08 2003-05-08 Ulf Sawert Grounded fuel delivery module for fuel system
US20040074995A1 (en) * 2002-10-18 2004-04-22 Denso Corporation Fuel feed apparatus having conductive members grounded each other
US20060219003A1 (en) * 2005-04-05 2006-10-05 Forgue John R Electrostatic charge control for in-tank fuel module components

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857669B1 (fr) * 2013-10-04 2017-12-06 Mahle International GmbH Dispositif de filtre pour véhicule automobile
WO2018033194A1 (fr) * 2016-08-15 2018-02-22 Pierburg Pump Technology Gmbh Pompe à vide de groupe auxiliaire de bord de véhicule à moteur
CN109312751A (zh) * 2016-08-15 2019-02-05 皮尔伯格泵技术有限责任公司 机动车辅助动力单元真空泵
CN109312751B (zh) * 2016-08-15 2022-03-15 皮尔伯格泵技术有限责任公司 机动车辅助动力单元真空泵
US11319966B2 (en) 2016-08-15 2022-05-03 Pierburg Pump Technology Gmbh Motor vehicle auxiliary power unit vacuum pump

Also Published As

Publication number Publication date
EP2060773A3 (fr) 2010-03-10
DE102007054857A1 (de) 2009-05-20
US20090126699A1 (en) 2009-05-21
US7607419B2 (en) 2009-10-27

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