EP1401671A1 - Dispositif d'alimentation de carburant destine a un vehicule - Google Patents

Dispositif d'alimentation de carburant destine a un vehicule

Info

Publication number
EP1401671A1
EP1401671A1 EP02726065A EP02726065A EP1401671A1 EP 1401671 A1 EP1401671 A1 EP 1401671A1 EP 02726065 A EP02726065 A EP 02726065A EP 02726065 A EP02726065 A EP 02726065A EP 1401671 A1 EP1401671 A1 EP 1401671A1
Authority
EP
European Patent Office
Prior art keywords
fuel
jet pump
line
supply device
pressure
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.)
Withdrawn
Application number
EP02726065A
Other languages
German (de)
English (en)
Inventor
Christoph Buehler
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 EP1401671A1 publication Critical patent/EP1401671A1/fr
Withdrawn legal-status Critical Current

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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
    • 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
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
    • F02M37/0094—Saddle tanks; Tanks having partition walls
    • 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
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • F02M37/0058—Returnless fuel systems, i.e. the fuel return lines are not entering the fuel 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
    • F02M37/106—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 is based on one
  • Fuel supply device for a motor vehicle according to the preamble of claim 1.
  • Such a fuel supply device is known from DE 39 15 185 Cl.
  • This fuel supply device has a fuel reservoir which has a plurality of partial areas, the bottoms of which are separated from one another.
  • the fuel supply device also has a delivery unit, through which fuel is delivered from a first section of the fuel storage tank to an internal combustion engine of the motor vehicle. In the first section of the fuel storage container, a storage container is arranged, from which the delivery unit sucks in fuel.
  • the fuel supply device also has a jet pump, through which fuel from a further partial area of the
  • Fuel reservoir is promoted in the first section or in the storage container arranged in this.
  • the jet pump has a propellant supply through which a propellant quantity is supplied for its operation.
  • the jet pump also has a delivery line through which the propellant quantity and through the jet pump from the further partial area of the fuel tank the amount of fuel drawn into the first section or the storage container.
  • the propellant quantity is fed to the jet pump through a return line, through which fuel delivered by the delivery unit and not used by the internal combustion engine is returned to the fuel tank.
  • the return line can lead away from a pressure regulator, by means of which the pressure of the fuel supplied to the internal combustion engine is regulated.
  • the characteristic of the pressure regulator can be adversely affected by the jet pump, since the jet pump generates a variable pressure in the return line depending on the amount of propellant supplied.
  • the fuel supply device with the features according to claim 1 has the advantage that the pressure generated by the jet pump in the propellant supply line is limited by the pressure relief valve and the fuel quantity controlled by the pressure relief valve is still used to fill the first portion of the fuel tank.
  • the design according to claim 2 ensures that the delivery unit can suck from a sufficient fuel supply.
  • the training according to claim 4 and 5 allow a good efficiency of the jet pump.
  • the embodiment according to claim 6 enables a simple structure and simple manufacture of the jet pump.
  • Fuel supply device for an internal combustion engine of a motor vehicle in a schematic illustration with a jet pump and FIG. 2 the jet pump in an enlarged illustration in a longitudinal section.
  • FIG. 1 shows a fuel supply device for an internal combustion engine 10 of a motor vehicle.
  • the internal combustion engine 10 has an injection system, through which fuel is injected into the cylinders of the internal combustion engine.
  • the Kraf material supply device has a fuel reservoir 12 which has several, for example two sub-areas 14, 16, the bottoms 15, 17 of which are separated from one another.
  • a hump or saddle 18 is provided between the partial areas 14, 16, by which the bottoms 15, 17 are separated from one another.
  • the fuel supply device has a delivery unit 20, which is arranged in a first partial area 14 of the fuel reservoir 12 and has an electric motor 22 as a drive, by means of which a pump part 24 is driven.
  • the electric motor 22 and the pump part 24 are arranged in a common housing 26.
  • the delivery unit 20 draws fuel from the storage container 28 and delivers it to the internal combustion engine 10.
  • a first jet pump 30 arranged, which conveys fuel from the partial region 14 into the storage container 28.
  • the jet pump 30 is supplied with a propellant quantity of fuel via a line 32, through which additional fuel is drawn in from the first partial region 14 via a suction opening 34 and conveyed into the storage container 28.
  • the jet pump 30 can be arranged on the storage container 28 or separately from it.
  • the fuel supply device can also have a pressure regulator device 36, by means of which the pressure of the fuel delivered to the internal combustion engine 10 is regulated.
  • the pressure regulator device 36 can be arranged within the fuel reservoir 12 and has a return connection 38, through which fuel is shut off by the pressure regulator device 36 when the predetermined pressure is exceeded.
  • the line 32 to the jet pump 30, through which the propellant quantity is supplied, can be connected to the return connection 38 of the pressure regulator device 36, so that the quantity of fuel which is controlled by the pressure regulator device 36 is used as the propellant quantity for the jet pump 30.
  • the line 32 to the jet pump 30 can also branch off from the pressure side of the delivery unit 20 upstream of the pressure regulator device 36, so that part of the fuel delivered by the delivery unit 20 is used as the propellant quantity for the jet pump 30.
  • the pressure regulator device 36 can also be omitted in this case.
  • a further jet pump 40 is arranged in the second partial area 16 of the fuel tank 12, which pumps fuel via the saddle 18 from the second partial area through a delivery line 42 into the first partial area 14.
  • the delivery line 42 can open into the first partial area 14 or into the storage container 28 arranged therein.
  • the Jet pump 40 is supplied via a line 44 with the amount of propellant required for its operation.
  • the line 44 can be connected to the return connection 38 of the pressure regulator device 36.
  • the jet pump 40 is shown enlarged in FIG. 2, on the basis of which the jet pump 40 is explained in more detail below.
  • the jet pump 40 has a base body 46, which is preferably made of plastic and is produced by injection molding.
  • the base body 46 has a connection 48, for example in the form of a connecting piece, for the line 44 through which the propellant quantity is supplied to the jet pump 40.
  • a channel 50 is formed in the base body 46, which narrows at its end facing away from the connection 48 to form a nozzle 52.
  • the nozzle 52 can be formed in one piece on the base body 46 or inserted as a separate part in the channel 50.
  • a suction opening 54 of the jet pump 40 connects to the nozzle 52 facing away from the channel 50.
  • Another side 56 connects to the side of the suction opening 54 facing away from the nozzle 52 and is formed in a tubular extension 57 of the base body 46.
  • the channel 50, the nozzle 52 and the channel 56 are arranged at least approximately coaxially to one another.
  • the channel 56 opens away from the suction opening 54 in a connection 58, for example in the form of a connection piece,
  • a relief channel 60 in the base body 46 leads from the channel 50 in front of the nozzle 52 and opens into a recess 62 formed in the base body 46.
  • the relief channel 60 extends, for example, approximately perpendicular to the channel 50, but can also be inclined to the channel 50 in any manner.
  • a closing element 64 for example in the form of a ball, is arranged, by means of which the relief channel 60 can be closed.
  • the Closing element 64 interacts with the mouth 66 of the relief channel 60 in the recess 62 as a valve seat.
  • the closing element 64 is pressed against the valve seat 66 by a prestressed spring 68.
  • the spring 68 can be designed, for example, as a leaf spring clamped on one side in the base body 46, which engages with its free end on the closing element 64.
  • the relief channel 60, the closing element 64 and the spring 68 form a pressure limiting valve 70 which, when a pressure in the channel 50 of the jet pump 40 determined by the pretension of the spring 68 is exceeded, the latter
  • a channel 72 leads from the recess 62 and opens into a connection 74, for example in the form of a connecting piece.
  • the channel 72 runs, for example, approximately parallel to the channel 50, but can also be inclined to the channel 50 in any manner.
  • the recess 62 is sealed with a cover 76 which is connected to the base body 46, for example glued or welded to it.
  • a nozzle 78 is arranged at a distance from the suction opening 54, which opens into the channel 56.
  • the connecting piece 78 is related to the direction of flow of the fuel in channel 56 at an acute angle ⁇ to the 'channel 56 arranged inclined.
  • the connector 78 is preferably formed in one piece on the tubular extension 57, but can also be connected to it as a separate part.
  • a pipe 80 is plugged onto the connector 78 and is attached to the connector 74 at its other end.
  • the flow cross-section of the nozzle 78 is preferably smaller than the flow cross-section of the channel 56.
  • the flow cross-section of the nozzle 78 and the angle ⁇ at which it is inclined to the channel 56 is selected such that the efficiency of the jet pump 40 is as good as possible.
  • the delivery line 42 of the jet pump 40 is connected to the pipe extension 57 with the channel 56, and the channel 56 forms part of the delivery line 42 from the jet pump 40 to the first section 14 of the fuel tank 12.
  • jet pump 40 The function of the jet pump 40 is explained below.
  • the propellant quantity of fuel supplied to jet pump 40 via line 44 flows through channel 50 and exits from it through nozzle 52.
  • nozzle 52 As a result of the reduced passage cross section of the nozzle 52, the fuel is accelerated, so that fuel is drawn in from the second partial region 16 of the fuel reservoir 12 through the suction opening 54.
  • the pressure in the channel 50 of the jet pump 40 exceeds the opening pressure of the pressure relief valve 70, this opens and fuel flows out of the channel 50. Then only a subset of the propellant quantity of fuel supplied to the jet pump 40 passes through the nozzle 52.
  • the partial quantity of fuel which is controlled by the opened pressure limiting valve 70 is fed to the duct 56 via the line 80 and the connection piece 78.
  • the through the Jet pump 40 delivered fuel quantity is reduced when the pressure relief valve 70 is open, since the partial quantity of fuel which is diverted by the pressure relief valve 70 is not used for fuel delivery, but rather reaches the first partial region 14 of the fuel tank 12 or the storage container 28 arranged therein. However, the partial quantity of fuel which is controlled by the pressure limiting valve 70 does not reach the second partial area 16 of the fuel reservoir 12 but is used for filling the first partial area 14 or the storage container 28 arranged therein.
  • connection piece 78 on the tubular extension 57 of the base body 46 of the jet pump 40 can also be omitted and the partial quantity of fuel which is discharged through the pressure relief valve 70 via a separate delivery line to the first partial area 14 of the fuel storage container 12 or the storage container 28 arranged therein be fed.
  • the pressure limiting valve 70 sets an at least approximately constant pressure in the channel 50 of the jet pump 40 and the line 44 opening into it. This avoids disruptive repercussions on the pressure control device 36, which could occur in the jet pump 40 with changing pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

L'invention concerne un dispositif d'alimentation de carburant présentant un réservoir de carburant (12) divisé en plusieurs zones partielles (14, 16) dont les bases (15, 17) sont séparées les unes des autres, et contenant un groupe de transport (20) permettant de transporter au moins indirectement du carburant d'une première zone partielle (14) du réservoir de carburant (12) vers un moteur à combustion interne (10) du véhicule. Un injecteur (40) permet de transporter du carburant d'une autre zone partielle (16) du réservoir< >(12) vers la première zone partielle (14), ledit injecteur (40) présentant une conduite de transport (42, 56) par laquelle le carburant transporté par l'injecteur (40) atteint la première zone partielle (14) du réservoir de carburant (12). L'injecteur (40) présente dans sa conduite d'alimentation de carburant (50) une soupape de limitation de pression (70) s'ouvrant lors du dépassement d'une pression prédéfinie et laissant s'écouler une quantité partielle du carburant alimenté à l'injecteur (40). Selon l'invention, la quantité de carburant évacuée par la soupape de limitation de pression (70) est alimentée à la conduite de transport (42, 56) de l'injecteur (40) ou séparément à la première zone partielle (14) du réservoir (12).
EP02726065A 2001-06-19 2002-03-20 Dispositif d'alimentation de carburant destine a un vehicule Withdrawn EP1401671A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10129437A DE10129437A1 (de) 2001-06-19 2001-06-19 Kraftstoffversorgungseinrichtung für ein Kraftfahrzeug
DE10129437 2001-06-19
PCT/DE2002/001005 WO2003002365A1 (fr) 2001-06-19 2002-03-20 Dispositif d'alimentation de carburant destine a un vehicule

Publications (1)

Publication Number Publication Date
EP1401671A1 true EP1401671A1 (fr) 2004-03-31

Family

ID=7688624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02726065A Withdrawn EP1401671A1 (fr) 2001-06-19 2002-03-20 Dispositif d'alimentation de carburant destine a un vehicule

Country Status (5)

Country Link
US (1) US20040011337A1 (fr)
EP (1) EP1401671A1 (fr)
JP (1) JP2004521255A (fr)
DE (1) DE10129437A1 (fr)
WO (1) WO2003002365A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060077818A (ko) * 2004-12-31 2006-07-05 학교법인 포항공과대학교 비대칭 전력 구동을 이용한 전력 증폭 장치
JP2007218094A (ja) * 2006-02-14 2007-08-30 Denso Corp ジェットポンプ
US7913670B2 (en) * 2007-06-18 2011-03-29 Continental Automotive Systems Us, Inc. Venturi jet structure for fuel delivery module of a fuel tank
DE102008007204B4 (de) * 2008-02-01 2018-04-19 Robert Bosch Gmbh Saugstrahlpumpe
DE102008054380A1 (de) 2008-12-08 2010-06-10 Robert Bosch Gmbh Vorrichtung zur Kraftstoffversorgung einer Brennkraftmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503885A (en) * 1983-12-16 1985-03-12 Chrysler Corporation Engine fuel supply system
DE3612194C1 (de) * 1986-04-11 1986-10-16 Daimler-Benz Ag, 7000 Stuttgart Im Kraftstoffbehälter eines Kraftfahrzeuges vorgesehene Kraftstoffstauvorrichtung
DE3915185C1 (fr) 1989-05-10 1990-10-04 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4402224A1 (de) * 1994-01-26 1995-07-27 Bosch Gmbh Robert Vorrichtung zum Versorgen einer Brennkraftmaschine mit Kraftstoff aus einem Vorratsbehälter
DE4426667A1 (de) * 1994-07-28 1996-02-01 Bosch Gmbh Robert Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeuges
US5732684A (en) * 1994-09-22 1998-03-31 Ford Global Technologies, Inc. Automotive fuel delivery system with pressure actuated auxiliary fuel pump
DE19651652A1 (de) * 1996-12-12 1998-06-18 Bosch Gmbh Robert Kraftstoffbehälter
EP0864458B1 (fr) * 1997-03-10 2002-04-03 Robert Bosch Gmbh Dispositif d'alimentation de carburant pour un monteur à combustion
DE19805070C2 (de) * 1998-02-09 1999-11-25 Bosch Gmbh Robert Kraftstoff-Fördermodul für eine Benzindirekteinspeisung einer Brennkraftmaschine mit einem Ventil
US6343589B1 (en) * 2000-02-01 2002-02-05 Walbro Corporation Fuel system with jet pump switching regulator
US6505644B2 (en) * 2000-06-09 2003-01-14 Delphi Technologies, Inc. Dual barrel jet fuel pump assembly for a fuel tank
GB2375086B (en) * 2001-05-05 2004-10-20 Visteon Global Tech Inc In-tank fuel supply unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03002365A1 *

Also Published As

Publication number Publication date
JP2004521255A (ja) 2004-07-15
WO2003002365A1 (fr) 2003-01-09
DE10129437A1 (de) 2003-01-02
US20040011337A1 (en) 2004-01-22

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