EP0846228B1 - Kraftstoff-förderpumpe für eine kraftstoff-einspritzpumpe für brennkraftmaschinen - Google Patents

Kraftstoff-förderpumpe für eine kraftstoff-einspritzpumpe für brennkraftmaschinen Download PDF

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Publication number
EP0846228B1
EP0846228B1 EP97914123A EP97914123A EP0846228B1 EP 0846228 B1 EP0846228 B1 EP 0846228B1 EP 97914123 A EP97914123 A EP 97914123A EP 97914123 A EP97914123 A EP 97914123A EP 0846228 B1 EP0846228 B1 EP 0846228B1
Authority
EP
European Patent Office
Prior art keywords
fuel
valve
venting device
duct
space
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
EP97914123A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0846228A1 (de
Inventor
Stanislaw Bodzak
Hanspeter Mayer
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 EP0846228A1 publication Critical patent/EP0846228A1/de
Application granted granted Critical
Publication of EP0846228B1 publication Critical patent/EP0846228B1/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
    • 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
    • F02M37/041—Arrangements for driving gear-type 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
    • F02M37/20—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 characterised by means for preventing vapour lock
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/007—Venting; Gas and vapour separation during pumping

Definitions

  • the invention relates to a fuel feed pump for a Fuel injection pump for internal combustion engines according to the Genus of claim 1.
  • a rotatingly driven pair with each other Intermeshing gears are provided which have fuel from one a suction tank connected along a suction tank between the face of the gears and the peripheral wall the pumping chamber formed in a conveying channel with the Fuel injection pump promotes connected pressure chamber.
  • On A shaft is attached to a gear wheel, which is connected to the Axis attacking drive element is driven in rotation.
  • the drive element is outside the housing of the pump chamber provided and transmits the rotary motion to one with the first gear meshing second gear on a second housing-bearing axis is arranged.
  • GB 850 518 is a feed pump for liquids known that a rotating driven pair with each other meshing gears, the liquid along a between the end faces of the gears and the peripheral wall the pump chamber receiving the gears Funding channel promotes.
  • This known pump serves as Pressure generator for an actuator that after a Working cycle of the pump on its suction side again becomes.
  • the suction and pressure side of this pump is over Check valves connected to an expansion tank.
  • a dry fuel delivery pump may be required be that a ventilation of a pipe system as well Pump chamber is required immediately after Commissioning of the fuel internal combustion engine quick pressure build-up and fuel delivery can.
  • the fuel delivery pump according to the invention for a Fuel injection pump for internal combustion engines has the Advantage on that by a in the intake chamber with the Channel connecting pressure chamber can be used Venting device a venting of the fuel delivery pump is possible. It is upstream and downstream the venting device in each case at least one pressure valve provided which are arranged such that by the Venting device a directed flow, that leads from the intake space to the pressure space, generated is, so that a venting of the fuel delivery pump can be achieved.
  • a housing cover of the fuel delivery pump the one connecting the suction chamber with the pressure chamber Channel is arranged in which the ventilation device can be used.
  • the ventilation device can be used in which the ventilation device can be used.
  • upstream and downstream of the Venting device can each be arranged a pressure valve is. This can be done in one valve compartment of the channel be arranged such that when the Vent the upstream of the Bleeding device closes pressure valve and that Pressure valve arranged downstream of the ventilation device opens up towards the pressure chamber. This allows a certain and directional flow can be achieved to the pumping chamber to be able to vent.
  • the upstream of the venting device arranged pressure valve in one of a storage tank for Fuel feed pump leading fuel line is. This in turn can result in a directed flow in Direction fuel injection pump can be achieved because that in the fuel line arranged pressure valve upstream to Storage tank closes.
  • the ventilation device in a Opening the housing can be used.
  • This Venting device can be used if necessary or permanently be used.
  • the device is advantageously vented through a closing valve provided in the opening or Closing element lockable.
  • FIGS. 1 to 4 are different views of a Fuel feed pump 10 shown in a not shown feed line from a storage tank to a Fuel injection pump used for internal combustion engines is.
  • the feed pump 10 has in its housing 1 Pump chamber 3 in which a rotatingly driven pair intermeshing gears is arranged. Doing so a first gear wheel 7 fastened on a shaft 5 by means of a drive element 8 driven and transmits them Rotational movement on a meshing with the first gear 7 second gear 9, which on a housing-mounted axis 11th is arranged.
  • the gears 7, 9 share the Pump chamber 3 by their tooth engagement in two parts, from which a first part a suction space 13 and a second Form part of a pressure chamber 15.
  • the suction chamber 13 is there one each between the tooth grooves on the end faces of the first gear 7 and the second gear 9 and Circumferential wall of the pump chamber 3 formed with delivery channel 17 connected to the pressure chamber 15.
  • the suction space 13 and the pressure chamber 15 each have a connection opening in a Wall of the pump housing 1 through which the suction chamber 13 with a suction line from the storage tank, not shown and the pressure chamber 15 with a likewise not shown Delivery line to the suction chamber of the fuel injection pump connected is.
  • the connection opening forms in the Intake chamber 13, an inlet opening 19 and the connection opening an outlet opening 21 in the pressure chamber 15.
  • the pump chamber 3 is on one end face in the axial direction of the shaft 5 and the axis 11 closed by a housing cover 23, the was removed in the illustration of FIG. 2 and so one Allows a view of the pump interior.
  • a suction chamber 13 with the Channel 26 connecting pressure chamber 15 is provided, the one Has opening 27 into which a venting device 28 can be used.
  • a Bore section 31 provided with a valve chamber 32, in which a pressure valve 33 is arranged.
  • a second bore section 36 is provided, which a in a pressure chamber 38 arranged in a valve chamber 37.
  • the Pressure valves 33 and 38 are advantageously as Check valves formed and arranged such that the Pressure valve 33 when channel 26 is pressurized closes via the ventilation device 28 to the suction chamber 13 and the pressure valve 38 to the pressure chamber 15 opens. This can create a directional flow, such as will be explained below.
  • the venting device 28 is in the embodiment as Hand pump trained. This has a grip cap 41, by actuating them a certain volume of air in the duct 26 can be supplied.
  • the venting device is advantageously temperature and vibration resistant trained and can, if necessary, in the opening 27 are used or in this opening 27 constantly be arranged. Alternatively, it can be provided that a motor-operated ventilation device into the opening 27 can be used and arranged.
  • a closing valve is provided or a Cap can be used so that when not in use Venting device 28 the channel 26 is closed.
  • FIG. 5 is a circuit diagram of that in FIGS. 1 to 4 illustrated embodiment shown.
  • a check valve 52 is arranged in the fuel line 51, this avoids the fuel in the storage tank is pushed back.
  • the fuel is in the direction of the arrow fed to the fuel delivery pump, the fuel for Fuel injection pump in the direction of the arrow from left to promotes right.
  • the channel 26 is arranged with the venting device 28. That is upstream and downstream of the venting device 28 Pressure valve 33 and 38 arranged.
  • FIG. 6 is a circuit diagram of an alternative Embodiment to Fig. 5 shown. It is provided that the pressure valve 33 is arranged in the fuel line 51 is. Furthermore, the ventilation device 28 is located downstream the pressure valve 38 is provided so that in turn a certain Air volume 53 can be displaced. By arranging the Pressure valve 33 in the fuel line 51 can be avoided be that the displaced air volume in the Fuel line 51 is pushed back.
  • FIG. 7 shows an alternative embodiment to FIG. 1 shown to 4.
  • the vent device 28 is for example at an angle of 45 ° to axis 61 inclined.
  • the angled arrangement of the venting device 28 to the housing cover 23 may be available depending on the standing space as well in another suitable Angular position may be provided. This can be achieved that good accessibility for the onset of the Venting device 28 is given in the opening 27.
  • Venting device 28 may be facilitated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
EP97914123A 1996-06-26 1997-02-06 Kraftstoff-förderpumpe für eine kraftstoff-einspritzpumpe für brennkraftmaschinen Expired - Lifetime EP0846228B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19625567 1996-06-26
DE19625567A DE19625567C2 (de) 1996-06-26 1996-06-26 Kraftstoff-Förderpumpe für eine Kraftstoff-Einspritzpumpe für Brennkraftmaschinen
PCT/DE1997/000221 WO1997049916A1 (de) 1996-06-26 1997-02-06 Kraftstoff-förderpumpe für eine kraftstoff-einspritzpumpe für brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0846228A1 EP0846228A1 (de) 1998-06-10
EP0846228B1 true EP0846228B1 (de) 2001-10-04

Family

ID=7798074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914123A Expired - Lifetime EP0846228B1 (de) 1996-06-26 1997-02-06 Kraftstoff-förderpumpe für eine kraftstoff-einspritzpumpe für brennkraftmaschinen

Country Status (5)

Country Link
US (1) US6186746B1 (cs)
EP (1) EP0846228B1 (cs)
CZ (1) CZ289388B6 (cs)
DE (2) DE19625567C2 (cs)
WO (1) WO1997049916A1 (cs)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19714648B4 (de) * 1997-04-09 2005-06-30 Robert Bosch Gmbh Kraftstoff-Förderpumpe
DE19858084C1 (de) * 1998-12-16 2000-04-20 Siemens Ag Einspritzsystem und zugehöriges Betriebsverfahren
JP2004501305A (ja) * 2000-04-18 2004-01-15 ルーク　ファールチョイグ−ヒドラウリク　ゲーエムベーハー　アンド　カンパニー　カーゲー ポンプ
GB0116810D0 (en) * 2001-07-10 2001-08-29 Delphi Tech Inc Electrical connection system
US6837751B2 (en) * 2002-07-25 2005-01-04 Delphi Technologies, Inc. Electrical connector incorporating terminals having ultrasonically welded wires
US6773240B2 (en) 2002-01-28 2004-08-10 Visteon Global Technologies, Inc. Single piston dual chamber fuel pump
FR2948731B1 (fr) * 2009-07-29 2014-05-09 Peugeot Citroen Automobiles Sa Dispositif et procede d'amorcage d'un circuit de carburant d'un moteur a combustion
CN104260013B (zh) * 2014-09-23 2016-08-24 苏州农业职业技术学院 一种基于蜗杆蜗轮与曲柄连杆传动的手动压紧装置
IT201800004043A1 (it) * 2018-03-28 2019-09-28 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442361A (en) * 1944-09-04 1948-06-01 Hulman Julius Fluid system automatic vent valve
GB850518A (en) * 1956-05-29 1960-10-05 Philip Walker Carver Improvements in pumps for liquids
DE1650303A1 (de) * 1967-10-21 1970-09-10 Bosch Gmbh Robert Druckregelventil
US4596519A (en) * 1982-07-29 1986-06-24 Walbro Corporation Gear rotor fuel pump
JPS60204955A (ja) * 1984-03-29 1985-10-16 Yanmar Diesel Engine Co Ltd 燃料供給ポンプ
DE4011668A1 (de) * 1990-04-11 1991-10-17 Bosch Gmbh Robert Sauganschlussverbindung fuer eine hydropumpe
US5039284A (en) * 1990-05-08 1991-08-13 Walbro Corporation Fuel pump with a vapor vent valve
US5145328A (en) * 1991-10-11 1992-09-08 Suntec Industries Incorporated Fuel supply unit for an oil burner
US5263459A (en) * 1992-11-27 1993-11-23 Walbro Corporation Fuel delivery with self-priming fuel pump
DE4240593A1 (de) * 1992-12-03 1994-06-09 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs

Also Published As

Publication number Publication date
US6186746B1 (en) 2001-02-13
CZ289388B6 (cs) 2002-01-16
DE19625567C2 (de) 2001-02-15
DE19625567A1 (de) 1998-01-22
DE59704776D1 (de) 2001-11-08
EP0846228A1 (de) 1998-06-10
WO1997049916A1 (de) 1997-12-31
CZ55098A3 (cs) 1999-05-12

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