EP0910737A1 - Systeme d'alimentation en carburant - Google Patents

Systeme d'alimentation en carburant

Info

Publication number
EP0910737A1
EP0910737A1 EP98903992A EP98903992A EP0910737A1 EP 0910737 A1 EP0910737 A1 EP 0910737A1 EP 98903992 A EP98903992 A EP 98903992A EP 98903992 A EP98903992 A EP 98903992A EP 0910737 A1 EP0910737 A1 EP 0910737A1
Authority
EP
European Patent Office
Prior art keywords
fuel
internal combustion
combustion engine
valve
accident
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Withdrawn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
EP98903992A
Other languages
German (de)
English (en)
Inventor
Kurt Frank
Detlef Classe
Albert Gerhard
Ulrich Projahn
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 EP0910737A1 publication Critical patent/EP0910737A1/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Withdrawn legal-status Critical Current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
    • F02M37/04—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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating or supervising devices
    • 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
    • F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
    • 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 conveyor according to the preamble of the main claim.
  • Delivery devices for fuel are already known, in which the fuel is pumped into a fuel storage device, as a result of which the injection system of the internal combustion engine of a motor vehicle can also be supplied from this fuel storage device.
  • the fuel which is kept under pressure by the fuel accumulator and stored in the fuel accumulator undesirably leaks through the leaky injection valves.
  • the fuel line will be damaged in an accident of the motor vehicle and then the fuel stored in the fuel store will leak at this damaged point.
  • the locking device advantageously has an actuating rod connected to the movable wall, into which an electromagnetically actuated locking pin engages when the internal combustion engine is switched off or in the event of an accident and thus prevents a force acting on the movable wall in the direction of the fuel.
  • shut-off valve for the fuel line, which shuts off the fuel line to the fuel accumulator after the internal combustion engine has been switched off or after an accident, so that the pressure caused by the fuel accumulator downstream of the shut-off valve is no longer effective or no fuel can flow out of the fuel accumulator.
  • the shut-off valve can advantageously be actuated electromagnetically. To avoid that when the shut-off valve is closed the between the shut-off valve and the Injector trapped fuel after the internal combustion engine has been shut down as a result of the after-heating phase by the internal combustion engine, it is advantageous to arrange a pressure relief valve that opens towards the fuel accumulator in a bypass line to the shut-off valve and that can be integrated in the shut-off valve.
  • FIG. 1 shows a schematic illustration of a delivery device for fuel to an internal combustion engine with a fuel accumulator
  • FIG. 2 shows a partial section of a fuel accumulator according to FIG. 1 on a modified scale
  • FIG. 3 shows a blocking device in a fuel line.
  • 1 denotes a fuel tank into which a so-called tank installation unit 2 is inserted, which is supplied with fuel from the fuel tank 1 via a compensation opening 3 in the wall of the tank installation unit. There is one in the tank installation unit 2
  • Fuel umpe 4 arranged, which is driven for example by an electric motor and delivers fuel into a fuel line 5 to the outside of the fuel tank 1.
  • the fuel line 5 opens into a so-called fuel distributor 8, from which the fuel in
  • Injection valves 9 arrives, which are inserted into the fuel distributor and four of which are shown, for example.
  • the injection valves 9 are with their injection-side ends in a single intake pipe of a cylinder of a mixture-compression-ignition Internal combustion engine 10 used and spray fuel in the immediate vicinity of the intake valves of the individual cylinders.
  • the fuel chamber 15 can also be connected directly to the fuel line 5 in a manner not shown, so that the fuel flowing to the fuel distributor 8 is passed completely through the fuel chamber 15.
  • the fuel chamber 15 is separated from a counter chamber 18 by a movable wall 17, which, as is also shown in FIG. 2, is formed, for example, by a membrane.
  • a piston which is tightly guided in the fuel accumulator 16 can also serve as the movable wall 17.
  • the fuel accumulator 16 is designed as a pressure accumulator, whereby in the exemplary embodiment shown
  • a compression spring 21 is provided, which is located in the counter chamber 18 and rests with its one end on a spring plate 22 engaging the movable wall 17 and with its other end on a partition wall 23 penetrating the counter chamber 18.
  • the pressure force on the movable wall 17 can also be generated in a manner not shown, pneumatically or hydraulically in the counter chamber 18 or by the action of a magnetic or electromagnetic force on the movable wall 17.
  • Fuel storage device 16 is also arranged a control device 26 which has a contact 27 which can be actuated by the movement of the movable wall 17.
  • the contact 27 is, for example, on an actuating rod 28 connected to the spring plate 22 and penetrating the partition 23 connected and causes either an adjustment of the supply voltage for the fuel pump 4 via a variable resistor 31 or an on-off control as a function of the amount of fuel in the fuel accumulator 16.
  • Such a control can be found, for example, in German patent application 196 25 754, the disclosure content of which also applies here should.
  • the system pressure of the fuel injection system in the fuel line 5 up to the injection valves 9 is determined directly by the pressure caused by the fuel accumulator 16.
  • the instantaneous pressure in the fuel accumulator 16 is therefore equal to the pressure prevailing in the fuel line 5; further pressure control elements are not required.
  • the fuel pump 4 is controlled by an electronic one
  • Control unit 32 which receives signals of the variable resistor 31 via electrical lines and controls the fuel umpe 4.
  • a blocking device 33 is provided, which in these cases enables the fuel pressure downstream of the fuel store 16 to be reduced.
  • the locking device 33 is designed such that it locks the movable wall 17 of the fuel accumulator 16 after the internal combustion engine 10 has been switched off.
  • the actuating rod 28 is designed as a rack and carries
  • Locking teeth 36 Furthermore, the locking device 33 has an electromagnet 37, which is mounted on the fuel accumulator and projects into the counter chamber 18 and by means of which a locking pin 38 aligned with the locking teeth 36 can be actuated.
  • the locking pin 38 is out of engagement with the, for example, sawtooth-shaped locking teeth 36, so that the actuating rod 28 can freely follow the movement of the movable wall 17 and the force of the compression spring 21 acts unhindered on the movable wall 17.
  • the electromagnet 37 of the locking device 33 is controlled by the electronic control unit 32 such that the Locking pin 38 is moved in the direction of the locking teeth 36 and engages in one of the locking teeth 36.
  • a shut-off valve is provided in the fuel line 5 as a locking device 33, which is actuated electromagnetically by the electronic control device 32 and is open during normal operation of the internal combustion engine, while after the internal combustion engine has been switched off or after an accident, the blocking device 33 designed as a shut-off valve is closed and thus the connection from the fuel accumulator 16 to the injection valves 9 or to the section of the fuel line 5 downstream of the blocking device 33 is interrupted.
  • an bypass line 41 to the shut-off valve 33 is provided, in which an overpressure valve 42 opening towards the fuel accumulator 16 is arranged.
  • the pressure relief valve 42 is integrated in the shut-off valve 33 to form a unit shown in broken lines in FIG. 3.

Abstract

Dans les systèmes d'alimentation en carburant pour moteur à combustion interne, présentant un réservoir de carburant, le carburant se trouvant sous pression dans ledit réservoir risque de s'échapper du système d'alimentation, après la coupure du moteur à combustion interne ou en cas d'accident. Par conséquent, il est prévu selon l'invention d'équiper le réservoir de carburant (16) d'un dispositif d'arrêt (33) qui vient s'encastrer dans une tige d'actionnement crantée (28) au moyen d'une broche à déclic (38) actionnée par voie électromagnétique, après coupure du moteur à combustion interne ou après un accident, et empêche ainsi l'application de la force d'un ressort de compression (21) sur la paroi mobile (17) du réservoir (16), ce qui supprime totalement la pression dans la conduite de carburant (5) après l'évacuation de faibles quantités de carburant. Le système d'alimentation en carburant selon l'invention convient aux moteurs à combustion interne à compression de mélange et à allumage commandé.
EP98903992A 1997-03-07 1998-01-07 Systeme d'alimentation en carburant Withdrawn EP0910737A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19709446 1997-03-07
DE19709446A DE19709446C1 (de) 1997-03-07 1997-03-07 Fördereinrichtung für Brennstoff
PCT/DE1998/000009 WO1998040621A1 (fr) 1997-03-07 1998-01-07 Systeme d'alimentation en carburant

Publications (1)

Publication Number Publication Date
EP0910737A1 true EP0910737A1 (fr) 1999-04-28

Family

ID=7822613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98903992A Withdrawn EP0910737A1 (fr) 1997-03-07 1998-01-07 Systeme d'alimentation en carburant

Country Status (7)

Country Link
US (1) US6092500A (fr)
EP (1) EP0910737A1 (fr)
JP (1) JP2000509789A (fr)
KR (1) KR20000010763A (fr)
BR (1) BR9805936A (fr)
DE (1) DE19709446C1 (fr)
WO (1) WO1998040621A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844215C1 (de) * 1998-09-26 2000-04-20 Daimler Chrysler Ag Verfahren zum Erhöhen der Sicherheit für die Insassen eines Kraftfahrzeugs im Crash-Fall
EP1101930A4 (fr) * 1999-05-26 2004-03-17 Mitsubishi Electric Corp Dispositif d'amenee de carburant et regulateur de pression de carburant
DE19949514C2 (de) * 1999-10-14 2001-10-18 Bosch Gmbh Robert Vorrichtung zum schnellen Druckaufbau in einer durch eine Förderpumpe mit einem Druckmedium versorgten Einrichtung eines Kraftfahrzeugs
US6234128B1 (en) * 2000-03-13 2001-05-22 General Motors Corporation Fuel accumulator with pressure on demand
FR2824363B1 (fr) * 2001-05-04 2004-01-02 Peugeot Citroen Automobiles Sa Dispositif de demarrage
US6604508B2 (en) * 2001-09-04 2003-08-12 Caterpillar Inc Volume reducer for pressurizing engine hydraulic system
US7055640B2 (en) * 2003-09-10 2006-06-06 Ford Global Technologies, Llc Fuel cut-off control system for a vehicle
FR2897652B1 (fr) * 2006-02-20 2008-04-11 Renault Sas Procede et dispositif de coupure d'injection dans une ligne d'echappement
US7347177B2 (en) * 2006-04-14 2008-03-25 Ford Global Technologies, Llc Fuel pump control
CN106458128A (zh) * 2014-05-15 2017-02-22 罗伯特·博世有限公司 用于车辆翻转发动机保护、紧急呼叫和定位服务的方法和系统
JP6162078B2 (ja) * 2014-06-17 2017-07-12 愛三工業株式会社 燃料供給装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620204A (en) * 1969-04-30 1971-11-16 Edward M Baltadonis Safety shutoff for engines
US4054116A (en) * 1976-04-09 1977-10-18 Chrysler Corporation Emergency fuel line closure
DE2759187A1 (de) * 1977-12-31 1979-07-12 Bosch Gmbh Robert Kraftstoffeinspritzanlage mit mindestens einem kraftstoffeinspritzventil, insbesondere fuer grossmotoren
DE3720067A1 (de) * 1986-07-05 1988-01-07 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung fuer brennkraftmaschinen
DE8801728U1 (fr) * 1988-02-11 1989-06-15 Robert Bosch Gmbh, 7000 Stuttgart, De
US4926815A (en) * 1989-09-06 1990-05-22 Atlantic Richfield Company Rapid shut-off system for truck engine
US5159911A (en) * 1991-06-21 1992-11-03 Cummins Engine Company, Inc. Hot start open nozzle fuel injection systems
US5265644A (en) * 1992-06-02 1993-11-30 Walbro Corporation Fuel pressure regulator
US5291578A (en) * 1992-06-15 1994-03-01 First Switch, Inc. Apparatus for controlling a vehicle fuel pump
JP3133586B2 (ja) * 1993-11-18 2001-02-13 富士重工業株式会社 高圧燃料噴射式エンジンの燃料圧力制御装置
DE19510494A1 (de) * 1995-03-23 1996-09-26 Pierburg Gmbh Brennstoffversorgungssystem für Brennkraftmaschinen
US5474042A (en) * 1995-05-12 1995-12-12 Kaneda; Mitsuharu Engine pre-oil device
US5967120A (en) * 1996-01-16 1999-10-19 Ford Global Technologies, Inc. Returnless fuel delivery system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9840621A1 *

Also Published As

Publication number Publication date
JP2000509789A (ja) 2000-08-02
US6092500A (en) 2000-07-25
KR20000010763A (ko) 2000-02-25
DE19709446C1 (de) 1998-10-15
WO1998040621A1 (fr) 1998-09-17
BR9805936A (pt) 1999-08-31

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