EP0816669B1 - Pompe de transfert de carburant pour pompe d'injection de carburant pour moteur - Google Patents

Pompe de transfert de carburant pour pompe d'injection de carburant pour moteur Download PDF

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Publication number
EP0816669B1
EP0816669B1 EP97100912A EP97100912A EP0816669B1 EP 0816669 B1 EP0816669 B1 EP 0816669B1 EP 97100912 A EP97100912 A EP 97100912A EP 97100912 A EP97100912 A EP 97100912A EP 0816669 B1 EP0816669 B1 EP 0816669B1
Authority
EP
European Patent Office
Prior art keywords
filter element
fuel
housing
feed pump
pump
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
EP97100912A
Other languages
German (de)
English (en)
Other versions
EP0816669A2 (fr
EP0816669A3 (fr
Inventor
Stanislaw Dr. 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 EP0816669A2 publication Critical patent/EP0816669A2/fr
Publication of EP0816669A3 publication Critical patent/EP0816669A3/fr
Application granted granted Critical
Publication of EP0816669B1 publication Critical patent/EP0816669B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • 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
    • F02M37/04—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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/42—Installation or removal of filters
    • 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
    • F04C2210/00—Fluid
    • F04C2210/60—Condition
    • F04C2210/62—Purity

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 end face, the gears and the peripheral wall the pumping chamber formed in a conveying channel with the Fuel injection pump promotes connected pressure chamber.
  • a shaft is attached to a gear wheel, which is connected to the Shaft attacking drive element is driven to rotate.
  • 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 housing-bearing axis is arranged.
  • Drive elements are, for example, via a universal joint or a slip clutch connected to the drive shaft.
  • a filter element which filters out any particles present in the fuel in order to supply cleaned fuel to the fuel feed pump.
  • a filter housing is used for such fuel cleaning with a filter element in a fuel delivery line between the storage tank and the fuel delivery pump arranged.
  • a fuel pump is known from US Pat. No. 4,740,140 Housing a filter element is provided.
  • the fuel is from promoted two meshing gears and is on the filter element fed to the internal combustion engine.
  • the fuel delivery pump according to the invention for a fuel injection pump for internal combustion engines has the advantage that in the housing of the fuel delivery pump at least one filter element is used under tension. This ensures that when the pump housing heats up the filter element with sealing surfaces arranged on the filter element form a liquid-tight connection, so that exclusively filtered fuel can flow into the pump chamber or into the fuel line leading to the fuel injection pump can be initiated.
  • a filter element can be used in the Intake chamber. This can do that Filter element have a relatively large filter area, so that no excessive flow resistance can arise. Consequently throttling can be avoided even if a relatively close-meshed filter element in a fuel delivery pump is provided.
  • Filter element in an inlet opening of the housing to the intake space Filter element can be arranged or at least partially protrudes, to avoid an elevated Throttling effect due to the lower available standing flow cross-section the mesh size of the Filter element can be slightly enlarged.
  • a filter element may be provided so that if necessary, abrasion of the pump drive is intercepted can be. Such particles can come from the fuel injection pump be kept away.
  • a collecting space for dirt particles be provided in which the filter element dirt can settle.
  • Fuel feed pump shown in a not illustrated feed line from a storage tank to one Fuel injection pump used for internal combustion engines is.
  • the fuel delivery pump has in its housing 1 a pump chamber 3, into which a rotatingly driven A pair of meshing gears 7, 9 is arranged.
  • a first gear wheel 7 fastened to a shaft 5 is thereby driven by means of a drive element 8 and transmits this rotary movement by means of a spur toothing to a second gear 9 meshing with the first gear 7, which is arranged on a housing-mounted axis 11.
  • the Gears 7, 9 divide the pump chamber 3 by their Tooth mesh in two parts, a first part one Intake chamber 13 and a second part form a pressure chamber 15.
  • the suction chamber 13 is one between each Tooth grooves on the end faces of the first gear 7 and second gear 9 and the peripheral wall of the pump chamber 3rd formed delivery channel 17 connected to the pressure chamber 15.
  • the suction chamber 13 and the pressure chamber 15 each have a connection opening in the wall of the pump housing 1, through which the suction space 13 with a no closer shown suction line from the storage tank and the pressure chamber 15 with a feed line, also not shown, for Suction chamber of the fuel injection pump is connected.
  • the pump chamber 3 is on one of them frontal axis direction of the shaft 5 and axis 11 of one Closed cover 23, which in the representation of the Fig. 2 was removed and so a view of the pump interior allows.
  • a filter element 26 is arranged in the suction space 13 separates the inlet opening 19 to the delivery channel 17.
  • the Filter element 26 is pre-stressed in suction space 13 used and lies with the filter element 26 comprehensive seal 27 in a receptacle 28 of the suction space 13 on.
  • the bias can be achieved in that a warming housing 1 during operation of the Fuel delivery pump the filter element 26 with its Seal 27 in the designated receptacles 28 in Suction chamber 13 abut.
  • the filter element 26 is designed as a flat structure and has a cross-sectional shape shown in FIG. 2 so that an arranged in the housing 1 opening 29, in a check valve can be arranged, recessed is.
  • the Filter element 26 is a spatial structure with a curved Surface. So that an easy insertion and The filter element 26 is replaced, the upper one and lower sealing surface formed straight, so that the Filter element 26 are inserted into the suction space 13 can.
  • a Collection space 31 is provided in a lower area of the suction space 13 .
  • the in the fuel supplied entrained particles are carried by the filter element 26 retained and settle in the settling room 31.
  • An opening 33 is in a housing wall 32 of the housing 1 provided through which the collecting space 31 is accessible from the outside is.
  • the opening 33 is through a viewing window 34 sealed liquid-tight, so that a simple Visual inspection is possible.
  • the filter element 26 can, depending on the Use a different mesh size exhibit.
  • the mesh size of the filter element 26 is furthermore in relation to the size of the intake chamber 13 usable filter element, so that a throttling effect the filter element 26 can be avoided.
  • the Mesh size should be made relatively small because of a large one Flow cross section is available. Alternatively, you can be provided that the filter element in the inlet opening 19 is used, the mesh size being larger here can be trained.
  • the mesh size of the Filter element to be adapted to the application, so that for example at low temperatures, relocating the filter can be prevented by flocculation of diesel fuel can.
  • a relative close-meshed filter element 26 is used to To be able to filter out dust particles.
  • the time for cleaning the fuel delivery pump can over the operating time or via an optical control of the collecting room 31 are monitored.
  • the cleaning of the Filter element 26 can be made in that the housing 1st is blown against the fuel delivery direction, so that the stuck in the filter element 26 Can release particles from the filter element 26. these can after blowing out settle in the collecting space 31, the is accessible via the opening 31 so that the stuck particles can be extracted.
  • the housing cover 23 be removed and the filter element 26 from the suction chamber 13 can be removed. At the same time, the collecting space 31 getting cleaned. Then the new filter element 26 reinstalled in the collection room 31 and with the Housing cover 23 closed. There is only one Assembly and disassembly of four cover screws required so that a quick and easy filter change and one Cleaning of the collecting space 31 can take place.
  • Filter element 26 can also be used in the pressure chamber 15 arranged filter element 26 apply.
  • an additional spring element can be provided can, so that the bias is applied in the longitudinal direction can be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (8)

  1. Pompe de transfert de carburant pour une pompe d'injection de carburant de moteur à combustion interne, comprenant une paire de roues dentées (7, 9) engrènant, l'une avec l'autre et entraínées en rotation dans une chambre de pompe 3, ces roues dentées prenant le carburant d'une chambre d'aspiration (13) reliée à un réservoir pour le transférer le long d'un canal de transfert (17) formé entre la surface frontale des roues dentées (7, 9) et la paroi périphérique de la chambre de pompe (3), dans une chambre de pression (15) reliée à la pompe d'injection de carburant, avec au moins un élément de filtre (26) intégré dans le boítier de la pompe de transfert de carburant,
    caractérisée en ce que
    l'élément de filtre réalisé en forme de tamis de filtre plat (26) est monté sous précontrainte dans le boítier (1) et est appliqué par un joint (27) entourant l'élément de filtre (26) dans un logement (28) du boítier (1).
  2. Pompe de transfert de carburant selon la revendication 1,
    caractérisée par
    au moins un élément de filtre (26) intégré dans la chambre d'aspiration (13).
  3. Pompe de transfert de carburant selon l'une des revendications 1 ou 2
    caractérisée par
    au moins un élément de filtre (26) intégré dans la chambre de pression (15).
  4. Pompe de transfert de carburant selon l'une des revendications précédentes,
    caractérisée par
    une chambre collectrice (31) dans la zone inférieure de la chambre d'aspiration (13) en amont de l'élément de filtre (26) dans le sens de transfert du carburant.
  5. Pompe de transfert de carburant selon la revendication 4,
    caractérisée en ce que
    la paroi (32) du boítier (1) comporte un orifice (33) conduisant à la chambre collectrice (31).
  6. Pompe de transfert de carburant selon la revendication 5,
    caractérisée par
    une fermeture transparente (34) dans l'ouverture (33).
  7. Pompe de transfert de carburant selon la revendication 1,
    caractérisée en ce que
    l'élément de filtre (26) est monté avec un élément de ressort sous pré-contrainte dans le boítier (1).
  8. Pompe de transfert de carburant selon la revendication 1,
    caractérisée par
    un joint (27) entourant l'élément de filtre (26), cet élément se glissant dans un logement (28) du boítier (1).
EP97100912A 1996-06-27 1997-01-22 Pompe de transfert de carburant pour pompe d'injection de carburant pour moteur Expired - Lifetime EP0816669B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19625736A DE19625736C2 (de) 1996-06-27 1996-06-27 Kraftstoffförderpumpe für eine Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE19625736 1996-06-27

Publications (3)

Publication Number Publication Date
EP0816669A2 EP0816669A2 (fr) 1998-01-07
EP0816669A3 EP0816669A3 (fr) 1998-04-15
EP0816669B1 true EP0816669B1 (fr) 2002-07-03

Family

ID=7798173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100912A Expired - Lifetime EP0816669B1 (fr) 1996-06-27 1997-01-22 Pompe de transfert de carburant pour pompe d'injection de carburant pour moteur

Country Status (3)

Country Link
EP (1) EP0816669B1 (fr)
BR (1) BR9703744A (fr)
DE (2) DE19625736C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338990A (en) * 1998-06-30 2000-01-12 Cummins Engine Co Ltd Fuel pump and filter assembly for an engine
DE19858610C1 (de) * 1998-12-18 2001-02-15 Solar Diamant Systemtechnik Gm Steuerung einer Verdrängerpumpe

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1132747A (en) * 1910-02-18 1915-03-23 Otis Elevator Co Rotary gear-pump.
US1780217A (en) * 1927-08-25 1930-11-04 Wiltse Appliance Co Pump mechanism
GB384164A (en) * 1931-04-03 1932-12-01 Tecalemit Ltd Improvements relating to pumps, and particularly to fuel pumps for internal combustion engines
US2024133A (en) * 1932-07-27 1935-12-10 Boeing Co Fuel handling unit
US2348567A (en) * 1941-01-10 1944-05-09 Parker Appliance Co Fuel pumping unit
GB569769A (en) * 1942-08-31 1945-06-07 Gen Motors Corp Improvements in fuel supply systems for internal combustion engines
DE1083656B (de) * 1954-02-04 1960-06-15 Webster Electric Co Inc Drehkolbenpumpe
US3695438A (en) * 1969-07-19 1972-10-03 Alberto Malpassi Gasoline pressure regulator device
US3622007A (en) * 1969-07-24 1971-11-23 Gen Metal Products Corp Fuel filter
DE1947505A1 (de) * 1969-09-19 1971-06-16 Bosch Gmbh Robert Aufhaengevorrichtung fuer eine Elektrokraftstoffpumpe
US4631009A (en) * 1984-07-18 1986-12-23 Sundstrand Corporation Lubrication scavenge system
US4740140A (en) * 1985-12-11 1988-04-26 Sundstrand Corporation Pump having integral switch and bypass valve
DE3718068C1 (en) * 1987-05-29 1988-06-30 Daimler Benz Ag Rod-shaped gauze filter for installation in the flow path of a fuel supply
US5007806A (en) * 1989-03-30 1991-04-16 Mallory, Inc. Fuel pump
DE4441505A1 (de) * 1994-11-22 1996-05-23 Bosch Gmbh Robert Kraftstoff-Förderpumpe für eine Kraftstoffeinspritzpumpe für Brennkraftmaschinen

Also Published As

Publication number Publication date
DE19625736C2 (de) 2000-07-27
BR9703744A (pt) 1998-08-11
DE19625736A1 (de) 1998-01-08
DE59707627D1 (de) 2002-08-08
EP0816669A2 (fr) 1998-01-07
EP0816669A3 (fr) 1998-04-15

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