EP0733797A2 - Système d'alimentation de carburant pour moteurs à combustion interne - Google Patents

Système d'alimentation de carburant pour moteurs à combustion interne Download PDF

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Publication number
EP0733797A2
EP0733797A2 EP95120481A EP95120481A EP0733797A2 EP 0733797 A2 EP0733797 A2 EP 0733797A2 EP 95120481 A EP95120481 A EP 95120481A EP 95120481 A EP95120481 A EP 95120481A EP 0733797 A2 EP0733797 A2 EP 0733797A2
Authority
EP
European Patent Office
Prior art keywords
pressure
switch
fuel
internal combustion
pressure switch
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.)
Granted
Application number
EP95120481A
Other languages
German (de)
English (en)
Other versions
EP0733797B1 (fr
EP0733797A3 (fr
Inventor
Bernhard Radermacher
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0733797A2 publication Critical patent/EP0733797A2/fr
Publication of EP0733797A3 publication Critical patent/EP0733797A3/fr
Application granted granted Critical
Publication of EP0733797B1 publication Critical patent/EP0733797B1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure
    • 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
    • F02M2037/085—Electric circuits therefor
    • F02M2037/087—Controlling fuel pressure valve

Definitions

  • the invention relates to a fuel supply system for internal combustion engines according to the preamble of claim 1.
  • Such systems consist of a fuel pump and a pressure regulator, the pressure regulator being arranged downstream of a distributor bar and allowing excess fuel to flow off into the fuel tank.
  • the fuel pump works with a large delivery rate against the regulated fuel pressure.
  • fuel which is heated by the engine waste heat is returned to the tank in large quantities, which can result in increased vapor pressure and gas bubbles in the fuel drawn in by the pump.
  • a supply device in which a pressure switch inserted between the fuel pump and the distributor strip switches between conductive and non-conductive depending on the pump outlet pressure and thereby the fuel pump is supplied with a different electrical power via a control circuit when the pump outlet pressure is one Threshold value of the pressure switch exceeds or falls below.
  • a device for controlling the fuel supply in which a pressure regulator adjusts a switch / resistor, the resistance of which depends on the amount of fuel flowing back depending on the power supply of the fuel pump controls.
  • a pressure regulator adjusts a switch / resistor, the resistance of which depends on the amount of fuel flowing back depending on the power supply of the fuel pump controls.
  • the object of the invention is to design a generic fuel supply system in such a way that there is a reduced pressure fluctuation on the distributor strip, no increase in fuel temperature caused by engine waste heat and, in addition, pump operation with an overall reduced power supply can be achieved.
  • FIG. 1 schematically shows a fuel supply system according to the invention for internal combustion engines, formed from a fuel pump 1 with electrical connections, which is connected to a fuel tank 2 and delivers to the internal combustion engine via a fuel pressure line 3.
  • a fuel pump 1 with electrical connections, which is connected to a fuel tank 2 and delivers to the internal combustion engine via a fuel pressure line 3.
  • the output line 6 is connected to a distributor bar 7 of the internal combustion engine.
  • the reducing pressure regulator 5 is set so that the reducing pressure is lower than the pressure regulated / set by the pressure switch 4.
  • the use of the reducing pressure regulator 5 ensures that the pressure fluctuations in the fuel pressure line 3 emanating from the pressure switch 4 do not penetrate into the distributor rail 7.
  • Fig. 2 shows a section of the pressure switch from Fig. 1. This consists of a microswitch 8 with electrical connections and a switch lever 9, which can be adjusted by a membrane rod 10 in two positions, switch open - closed.
  • the membrane rod 10 is connected to a membrane 11 which delimits a storage membrane chamber 12.
  • This storage membrane chamber 12 is connected to the fuel pressure line 3 via a branch 13, a check valve 14 being arranged in the fuel pressure line 3 upstream of the branch 13.
  • the fuel delivered by the fuel pump 1 passes via the check valve 14 to the reducing pressure regulator 5 and at the same time into the storage membrane chamber 12.
  • the membrane rod 10 moves the switch lever 9 into the “switch open” position with a stop surface 16, as a result of which the power supply to the fuel pump 1 is interrupted, possibly via an amplifier circuit. This interruption is maintained until the storage membrane chamber 12 is almost emptied and the membrane rod 10 has pressed the switch lever 9 into the "switch closed” position with another stop surface 17. The process can then be repeated.
  • the check valve 14 prevents a backflow of fuel via the switched-off fuel pump 1. It goes without saying that each line part of the fuel pressure line 3 can be secured via pressure relief valves, which is why a representation in this regard can be dispensed with.
  • the distance between the two stop surfaces of the diaphragm rod determines the switching hysteresis in connection with the diaphragm adjustment. It may be advantageous that the reducing pressure regulator 5 is acted upon by the intake pressure of the internal combustion engine. A connecting line 18 is provided for this.
  • the storage volume 12 is closed when the internal combustion engine is switched off by a fuel shut-off valve 19 which is arranged in the branch 13 and opens when the internal combustion engine is started up.
  • a fuel shut-off valve 19 which is arranged in the branch 13 and opens when the internal combustion engine is started up. This measure serves for safety in the event of accidents, reduces fuel leakage, and avoids fuel delivery when the internal combustion engine is switched off from the storage volume 12 to the distributor rail 7 or the injection valves (not shown), so that uncontrolled entry of fuel into the combustion chambers, e.g. B. with leaky valves, is excluded (water hammer).
  • the switch can alternatively consist of a potentiometer, in which case a voltage-dependent switching device is provided which switches on the power supply to the internal combustion engine at a low voltage on the potentiometer and switches it off at a high voltage or vice versa.
  • the membrane of the present embodiment can also be replaced by a piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP95120481A 1995-03-23 1995-12-22 Système d'alimentation de carburant pour moteurs à combustion interne Expired - Lifetime EP0733797B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19510494 1995-03-23
DE19510494A DE19510494A1 (de) 1995-03-23 1995-03-23 Brennstoffversorgungssystem für Brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0733797A2 true EP0733797A2 (fr) 1996-09-25
EP0733797A3 EP0733797A3 (fr) 1997-04-02
EP0733797B1 EP0733797B1 (fr) 1998-07-15

Family

ID=7757429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120481A Expired - Lifetime EP0733797B1 (fr) 1995-03-23 1995-12-22 Système d'alimentation de carburant pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US5765535A (fr)
EP (1) EP0733797B1 (fr)
DE (2) DE19510494A1 (fr)
ES (1) ES2118497T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040621A1 (fr) * 1997-03-07 1998-09-17 Robert Bosch Gmbh Systeme d'alimentation en carburant
DE10223077B4 (de) * 2002-05-24 2004-05-06 Robert Bosch Gmbh Kraftstoffeinspritzsystem für Brennkraftmaschinen mit Niederdruckspeicher
WO2016066500A1 (fr) * 2014-10-31 2016-05-06 Continental Automotive Gmbh Dispositif et procédé de détection d'une pression de fonctionnement de la pompe à carburant d'un véhicule automobile

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19627741A1 (de) * 1996-07-10 1998-01-15 Mannesmann Vdo Ag Druckhalteeinrichtung
CN1111648C (zh) * 1999-05-26 2003-06-18 三菱电机株式会社 燃料供给装置及燃料压力调节装置
US6415657B1 (en) 2000-09-11 2002-07-09 Daimlerchrysler Corporation Switch monitoring system
US6279541B1 (en) * 2000-12-01 2001-08-28 Walbro Corporation Fuel supply system responsive to engine fuel demand
JP3786262B2 (ja) 2002-04-16 2006-06-14 三菱電機株式会社 自動車用燃料供給装置
US7098854B2 (en) * 2004-09-09 2006-08-29 Raytheon Company Reflect antenna
US7431020B2 (en) * 2006-11-30 2008-10-07 Denso International America, Inc. Adaptive fuel delivery module in a mechanical returnless fuel system
US7640916B2 (en) 2008-01-29 2010-01-05 Ford Global Technologies, Llc Lift pump system for a direct injection fuel system
US8312866B2 (en) * 2008-10-31 2012-11-20 Ford Global Technologies, Llc Fuel system diagnosis via fuel pressure switch
US20140165965A1 (en) * 2012-12-18 2014-06-19 Michael R. Teets Fuel supply system with accumulator
US9470195B2 (en) * 2012-12-18 2016-10-18 Fca Us Llc Fuel supply system with accumulator

Family Cites Families (19)

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US1404152A (en) * 1918-08-05 1922-01-17 Delco Light Co Fuel-supply system
US1580489A (en) * 1923-12-03 1926-04-13 Gen Motors Res Corp Fuel-supply system
DE2142459A1 (de) * 1971-08-25 1973-03-01 Walter Swoboda Einspritzanlage fuer verbrennungsmotoren
US4359984A (en) * 1979-05-25 1982-11-23 Kiyoharu Nakao Fuel control device for diesel engine
GB2070802B (en) * 1980-01-31 1984-08-22 Nissan Motor Control of fuel supply to an ic engine
JPS6172865A (ja) * 1984-09-14 1986-04-14 Nippon Carbureter Co Ltd エンジンの燃料供給装置
JPH0681931B2 (ja) * 1986-06-25 1994-10-19 日本電装株式会社 燃料ポンプ制御装置
US4728264A (en) * 1986-10-10 1988-03-01 Walbro Corporation Fuel delivery system with pressure-controlled electric pump
US4920942A (en) * 1987-04-24 1990-05-01 Diesel Kiki Co., Ltd. Method and apparatus for supplying fuel to internal combustion engines
US4919102A (en) * 1988-07-15 1990-04-24 Jidosha Kiki Co., Ltd. Fuel pump driving apparatus for vehicle
US5231967A (en) * 1991-01-04 1993-08-03 Outboard Marine Corporation Fuel pump and fuel filter for a marine installation
US5133323A (en) * 1991-06-25 1992-07-28 Siemens Automotive L.P. Intake manifold pressure compensation for the closed-loop pressure regulation of a fuel pump
US5337718A (en) * 1992-06-02 1994-08-16 Walbro Corporation Electronic fuel injection system with heat-pressure response
US5265644A (en) * 1992-06-02 1993-11-30 Walbro Corporation Fuel pressure regulator
FR2695964B1 (fr) * 1992-09-24 1995-07-21 Walbro Corp Circuit de distribution de carburant pour moteur a combustion interne.
US5237975A (en) * 1992-10-27 1993-08-24 Ford Motor Company Returnless fuel delivery system
US5398655A (en) * 1994-01-14 1995-03-21 Walbro Corporation Manifold referenced returnless fuel system
US5509390A (en) * 1994-01-14 1996-04-23 Walbro Corporation Temperature-responsive demand fuel pressure regulator
FR2725245B1 (fr) * 1994-10-03 1996-12-20 Marwal Systems Dispositif d'alimentation en carburant pour vehicule automobile avec regulation de pression

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040621A1 (fr) * 1997-03-07 1998-09-17 Robert Bosch Gmbh Systeme d'alimentation en carburant
DE10223077B4 (de) * 2002-05-24 2004-05-06 Robert Bosch Gmbh Kraftstoffeinspritzsystem für Brennkraftmaschinen mit Niederdruckspeicher
WO2016066500A1 (fr) * 2014-10-31 2016-05-06 Continental Automotive Gmbh Dispositif et procédé de détection d'une pression de fonctionnement de la pompe à carburant d'un véhicule automobile
DE102014222339B4 (de) * 2014-10-31 2020-07-09 Vitesco Technologies GmbH Vorrichtung und Verfahren zum Erfassen eines Betriebsdrucks einer Kraftstoffpumpe für ein Kraftfahrzeug

Also Published As

Publication number Publication date
ES2118497T3 (es) 1998-09-16
EP0733797B1 (fr) 1998-07-15
DE59502823D1 (de) 1998-08-20
DE19510494A1 (de) 1996-09-26
EP0733797A3 (fr) 1997-04-02
US5765535A (en) 1998-06-16

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