EP0661437B1 - Kraftstoff-Versorgungssystem für ein Kraftfahrzeug mit Ottomotor - Google Patents

Kraftstoff-Versorgungssystem für ein Kraftfahrzeug mit Ottomotor Download PDF

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Publication number
EP0661437B1
EP0661437B1 EP94118841A EP94118841A EP0661437B1 EP 0661437 B1 EP0661437 B1 EP 0661437B1 EP 94118841 A EP94118841 A EP 94118841A EP 94118841 A EP94118841 A EP 94118841A EP 0661437 B1 EP0661437 B1 EP 0661437B1
Authority
EP
European Patent Office
Prior art keywords
pump
fuel
fuel tank
fuel supply
injection unit
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
EP94118841A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0661437A1 (de
Inventor
Erwin Brunnhofer
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.)
Technoflow Tube Systems GmbH
Original Assignee
Technoflow Tube Systems 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 Technoflow Tube Systems GmbH filed Critical Technoflow Tube Systems GmbH
Publication of EP0661437A1 publication Critical patent/EP0661437A1/de
Application granted granted Critical
Publication of EP0661437B1 publication Critical patent/EP0661437B1/de
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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • 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
    • 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
    • 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
    • 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • 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
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • 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
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • 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
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank

Definitions

  • the invention is based on a fuel supply system for a motor vehicle with a gasoline engine, the one Has a fuel injection system with an injection rail, with fuel tank, pump, flow line system from Fuel tank to the fuel rail, return line system from the fuel rail to the fuel tank, where the return line system via a means for pressure regulation is connected to the injection rail, where fuel tank, pump, flow line system and Injection bar form a fuel supply device, whose pump with the gasoline engine running according to promotes its different operating conditions, the fuel tank with a venting device provided and otherwise from the free Atmosphere is separated.
  • the characteristic flow pipe system denotes single, multiple and branched flow lines. Accordingly, of course the term return line system. In the fuel tank can be atmospheric pressure or an overpressure.
  • a fuel supply system of the type mentioned Type from which the invention is based is from US-A-4 926 829 known.
  • this known fuel supply system becomes during the operation of the gasoline engine essentially continuously excess fuel from the injection rail via a return line into the Fuel tank returned.
  • the return line points a throttle device in the fuel tank with which the fuel flows through the return line can be restricted so that there is in the return line forms a fuel backlog, as it were.
  • the fuel flowing through the return line or Fuel that is stuck in the return line is the Exposed to a variety of heat sources, For example, the heat that is arranged in the engine block Injection bar arises or from that Gearbox of the motor vehicle is being developed.
  • the invention is based on the technical problem disturbing fuel losses and fuel changes due to fuel evaporation in fuel supply systems for a motor vehicle with a gasoline engine avoid.
  • the invention teaches to solve this technical problem a fuel supply system of the aforementioned Kind, which is characterized in that the means a controllable overflow valve for pressure regulation which overflow valve is only briefly at Commissioning of the gasoline engine via a starter control device for the gasoline engine and / or the pressure the pump is controllable in the open position, and that at least the fuel tank, the flow pipe system and the fuel rail is insulated.
  • the overflow valve On the pressure of the pump when starting up of the gasoline engine in the open position controlled, so you will control or regulate the pump so that a pressure pulse when starting the gasoline engine arises while the pump is running Gasoline engine and all operating conditions in the fuel rail a constant static fuel pressure maintained.
  • the invention takes into account the fact that Fuel supply system for a motor vehicle with Otto engine affect a variety of heat sources, namely the fuel pump with its engine if this Unit is arranged in the fuel tank on the engine block arranged injection bar, the heat to the over the return line system delivers returning fuel, the exhaust system when it's near the fuel tank is arranged, and also the transmission of the Motor vehicle that heats up while driving. in the the rest is heat introduced by solar radiation and hot engine exhaust that flows to the flow line system and the return line system as well as on the Soak in the fuel tank. Since according to the invention the return line system with normal operation of the motor vehicle is, as it were, turned off in relation to the prevention of annoying heat input great advantage if only the fuel tank, the flow line system and the injection rail are insulated.
  • the return line system is also heat insulating isolate.
  • the invention is based on the knowledge that that the disruptive influences of the described Heat sources and others by the combination of the specified Features practically completely interrupted can be so that a disturbing Evaporation of fuel with the resulting Disadvantages no longer occurs. It is understood that thermal insulation according to the rules of thermal insulation and Insulation technology is set up, namely under Taking the physics of the relationships into account Operation of the motor vehicle and also in relation to the Fuel and its temperature behavior.
  • the invention suppresses the permanent fuel circulation via the flow line system, the injection rail and the return line system.
  • the Pump set up in different ways be.
  • An embodiment of the invention provides that the pump with the gasoline engine running under all operating conditions a constant, maintains static fuel pressure.
  • Another Embodiment provides that the pump to one Control or regulating device is connected, which the delivery rate and / or the delivery pressure of the pump in Dependence on the speed and the load of the Otto engine controls.
  • the components fuel tank, flow line system and return line system made of plastic exist and consequently have poor heat conduction.
  • These components can be a heat insulating Coating made of thermal insulation plastic, e.g. B. polyurethane have, e.g. B. cohesive with the components connected is. That can be done in manufacturing Respects in a simple manner, e.g. B. by extrusion coating Reach components with the thermal insulation plastic.
  • the fuel supply system shown in the figures is for a motor vehicle with a petrol engine determined that a fuel injection system and one Injection bar has. The motor vehicle and his Gasoline engines were not drawn.
  • Fuel tank 1 include Fuel tank 1, a pump 2, a flow line system 3 from the fuel tank 1 to the fuel rail 4 and a Return line system 5 from the injection bar 4 to Fuel tank 1.
  • the fuel tank 1 is with a Ventilation device 6 provided and the rest of the separate atmosphere.
  • Fuel tank 1, pump 2, flow line system 3 and Injection strip 4 form a fuel supply device, whose pump 2 with the gasoline engine running in accordance with promotes its different operating conditions.
  • the Return line system 5 is controllable Overflow valve 7 connected to the injection bar 4, which overflow valve 7 only briefly Commissioning of the gasoline engine controllable in open position is. So there is no surplus funding that a constant during the operation of the gasoline engine Overflow of the overflow valve and a fuel circulation would require.
  • the overflow valve 7 is via a starter control device 9 for the gasoline engine and / or the pressure of the pump 2 when the Gasoline engine controllable in open position.
  • the pump 2 has a very high efficiency, so the power loss is small and thus the amount of heat is also small is generated by the pump 2 and its drive. In any case is the heat generated by the running pump 2 by suitable measures uncoupled from the fuel tank 1. Appropriate thermal insulation measures could be used be carried out, even if the Pump 2 is located in the fuel tank 1 with its drive.
  • the exemplary embodiment is the pump 2 with its drive however arranged outside the fuel tank 1 and consequently, the one created by the running pump 2 Heat decoupled from the fuel tank 1 in this way.
  • the Fuel supply can be set up accordingly.
  • a Possibility is the arrangement and interpretation so to make sure that the pump 2 with the gasoline engine running and all operating conditions in the injection bar 4 one maintains constant static fuel pressure. Should about the pressure of the fuel when the Otto engine overflow valve 7 briefly opened are, the pump 2 generates a corresponding Pressure pulse that is directly or indirectly for the Control of the overflow valve 7 can be used. It but there is also the possibility of pump 2 to one Control or regulating device 10 to connect the Delivery rate and / or the delivery pressure of the pump 2 in Controls depending on the speed of the gasoline engine.
  • the components fuel tank 1, flow line system 3, Return line system 5 advantageously consist of Plastic.
  • a thermally insulating coating 8 made of thermally insulating plastic to provide the cohesive with the components is connected, as the embodiment suggests.
  • FIG. 2 shows the invention Fuel supply system for a motor vehicle with Otto engine, which is a fuel injection system with fuel rail 4, and which basically as for FIG. 1 is constructed, but a return line system 5 from the injection bar 4 to the fuel tank 1 does not have.
  • the pump 2 is with her Drive arranged outside of the fuel tank 1.
  • the Pump 2 is connected to a control or regulating device 10 connected, which the discharge pressure of the pump 2 in Controls depending on the speed of the gasoline engine. To this extent, this control is based on demand Fuel supply.
  • fuel supply system additionally with a return line system To provide overflow valve, which is already in the explained only briefly Commissioning of the gasoline engine controllable in open position is. It can be thermally insulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP94118841A 1993-12-28 1994-11-30 Kraftstoff-Versorgungssystem für ein Kraftfahrzeug mit Ottomotor Expired - Lifetime EP0661437B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344777A DE4344777C2 (de) 1993-12-28 1993-12-28 Kraftstoff-Versorgungssystem für ein Kraftfahrzeug mit Ottomotor
DE4344777 1993-12-28

Publications (2)

Publication Number Publication Date
EP0661437A1 EP0661437A1 (de) 1995-07-05
EP0661437B1 true EP0661437B1 (de) 1998-01-21

Family

ID=6506432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118841A Expired - Lifetime EP0661437B1 (de) 1993-12-28 1994-11-30 Kraftstoff-Versorgungssystem für ein Kraftfahrzeug mit Ottomotor

Country Status (6)

Country Link
US (1) US5584279A (pt)
EP (1) EP0661437B1 (pt)
JP (1) JP2651125B2 (pt)
BR (1) BR9405275A (pt)
DE (2) DE4344777C2 (pt)
ES (1) ES2114120T3 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6189508B1 (en) * 1997-03-12 2001-02-20 FORSCHUNGS- UND TRANSFERZENTRUM E.V. AN DER WESTSäCHSISCHEN HOCHSCHULE ZWICKAU Method for fuel injection in multicylinder engines and device for the implementation of said method
JP3562200B2 (ja) * 1997-03-21 2004-09-08 トヨタ自動車株式会社 燃料貯留装置
US5832903A (en) * 1997-06-02 1998-11-10 Brunswick Corp. Fuel supply system for an internal combustion engine
US5931141A (en) * 1997-10-06 1999-08-03 Tennex Corporation Vapor treatment system for volatile liquid
DE19902427C1 (de) * 1999-01-22 2000-08-24 Mannesmann Vdo Ag Kraftstofffördereinheit
US6176275B1 (en) 1999-02-03 2001-01-23 Bob J. Hill Vapor recovery system for mobile fuelers
DE19916530A1 (de) * 1999-04-13 2000-10-19 Mannesmann Vdo Ag Einrichtung zur Versorgung einer Brennkraftmaschine eines Kraftfahrzeuges mit Kraftstoff
DE19949902A1 (de) 1999-10-16 2001-04-19 Bayerische Motoren Werke Ag Kraftstoff-Förderpumpe für ein Kraftfahrzeug und eine mit einer Kraftstoff-Förderpumpe versehenem Kraftstoff-Fördersystem
US6957542B1 (en) * 1999-11-09 2005-10-25 Toyota Jidosha Kabushiki Kaisha Fuel tank system
US6675641B2 (en) 2001-06-21 2004-01-13 Caterpillar Inc Closed system transient diesel fuel conditioning and measurement system
US7077110B2 (en) * 2004-03-01 2006-07-18 Stant Manufacturing Inc. Return fuel temperature control module
DE102004054155A1 (de) 2004-11-10 2006-05-11 Daimlerchrysler Ag Kraftstoffversorgungssystem für ein Heizgerät eines Kraftfahrzeugs
JP2012172606A (ja) * 2011-02-22 2012-09-10 Ito Racing Service Co Ltd 混合燃料生成方法，混合燃料生成装置，及び燃料供給装置
US9493051B2 (en) * 2014-08-08 2016-11-15 Antwanette Bills Chilled vehicle fuel storage tank
US11524888B1 (en) 2022-07-26 2022-12-13 Bob J. Hill Vapor recovery system for mobile fuelers

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US2994311A (en) * 1960-01-14 1961-08-01 William B Shuck Fuel cooling device
US3477238A (en) * 1967-12-13 1969-11-11 Motorola Inc Thermoelectric antipercolator device for the fuel system of an internal combustion engine
US3974809A (en) * 1973-03-16 1976-08-17 Robert Bosch G.M.B.H. Fuel injection system for spark plug-ignited internal combustion engines with compression of the air-fuel mixture
DE2808731A1 (de) * 1978-03-01 1979-09-06 Bosch Gmbh Robert Verfahren zum betrieb einer kraftstoffeinspritzanlage und kraftstoffeinspritzanlage
DE2841920A1 (de) * 1978-09-27 1980-04-17 Bosch Gmbh Robert Kraftstoffeinspritzanlage
US4248194A (en) * 1979-08-23 1981-02-03 Trw Inc. Method and apparatus for controlling the operation of a pump
US4404944A (en) * 1980-08-07 1983-09-20 Nissan Motor Co., Ltd. Fuel supply system for an injection-type internal combustion engine
DE3214874C2 (de) * 1982-04-22 1984-11-08 Daimler-Benz Ag, 7000 Stuttgart Kraftstoffanlage mit einem Kraftstoffvorratsbehälter für eine Otto-Brennkraftmaschine von Kraftfahrzeugen
JPS6095168U (ja) * 1983-12-06 1985-06-28 三井造船株式会社 燃料供給装置
JPS61255256A (ja) * 1985-05-08 1986-11-12 Nippon Carbureter Co Ltd 膜式気化器
US4782808A (en) * 1986-08-13 1988-11-08 Ashland Oil, Inc. Process and apparatus for reducing port fuel injector deposits
DE3733984A1 (de) * 1987-10-08 1989-06-01 Audi Ag Kraftstoff-einspritzleitungssystem fuer brennkraftmaschinen
US4794889A (en) * 1988-04-11 1989-01-03 Brunswick Corporation Fuel puddle bleed shut-off for fuel injected two cycle engine
US4926829A (en) * 1988-11-28 1990-05-22 Walbro Corporation Pressure-responsive fuel delivery system
US5146901A (en) * 1992-02-03 1992-09-15 General Motors Corporation Vapor suppressing fuel handling system

Also Published As

Publication number Publication date
US5584279A (en) 1996-12-17
DE59405099D1 (de) 1998-02-26
EP0661437A1 (de) 1995-07-05
BR9405275A (pt) 1995-09-19
DE4344777A1 (de) 1995-06-29
JP2651125B2 (ja) 1997-09-10
JPH084616A (ja) 1996-01-09
DE4344777C2 (de) 1998-06-04
ES2114120T3 (es) 1998-05-16

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