EP1275845B1 - Pompe à combustible haute-pression - Google Patents

Pompe à combustible haute-pression Download PDF

Info

Publication number
EP1275845B1
EP1275845B1 EP20020011421 EP02011421A EP1275845B1 EP 1275845 B1 EP1275845 B1 EP 1275845B1 EP 20020011421 EP20020011421 EP 20020011421 EP 02011421 A EP02011421 A EP 02011421A EP 1275845 B1 EP1275845 B1 EP 1275845B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
fuel pump
cylinder head
annular
fastening
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
EP20020011421
Other languages
German (de)
English (en)
Other versions
EP1275845A3 (fr
EP1275845A2 (fr
Inventor
Helmut Rembold
Peter Ropertz
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 EP1275845A2 publication Critical patent/EP1275845A2/fr
Publication of EP1275845A3 publication Critical patent/EP1275845A3/fr
Application granted granted Critical
Publication of EP1275845B1 publication Critical patent/EP1275845B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0421—Cylinders
    • 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
    • F04B53/007—Cylinder heads

Definitions

  • the invention relates to a fuel pump, in particular high-pressure fuel pump for a fuel system of an internal combustion engine with gasoline direct injection, with a piston, with drive means for driving the piston, with a cylinder in which the piston is guided, with a cylinder head, which on the cylinder with a total annular contact surface is present, and with at least one fastening means, with which the cylinder head is acted upon by the annular contact surface against the cylinder, wherein the fastening means comprises at least two effective areas, in which the overwhelming portion of the force transmission takes place.
  • Such a fuel pump is known from the market.
  • the cylinder between the cylinder head and a flange member is jammed, which in turn is attached to the engine block of the internal combustion engine.
  • the flange is braced with screws to the cylinder head.
  • EP 0 933 524 A2 is a fuel pump in which a multipart cylinder by means of a screw ring is acted upon against a cylinder head.
  • the DE 197 47 636 A1 in turn shows a fuel pump in which the cylinder head is held by acting directly on the cylinder clamping screws.
  • the present invention has the object, a fuel pump of the type mentioned in such a way that it can be made cheaper.
  • the fuel pump according to the invention has the advantage that a cheaper fastening means can be used, with which the cylinder head is acted upon by the annular contact surface against the cylinder.
  • the reason for this is that the fastener needs to absorb smaller forces. This is based on the following consideration:
  • Fasteners usually do not cooperate with the part to be fastened to the same extent in the entire contact area. In general, an effective range results, in which the overwhelming part of the force transmission takes place.
  • the distance between the two effective areas of a fastener can be referred to as "free length".
  • the fuel pump comprises an annular fastening part which is supported at least indirectly on the cylinder, wherein the fastening means is braced between the fastening part and the cylinder head.
  • annular fastening part can be avoided that on the cylinder itself, which is generally made of a hard material, for example. Holes or threads must be introduced, where the fastener can attack. Ultimately, the manufacture of the actual cylinder is simplified or cheapened by the annular attachment part.
  • the annular attachment member is supported in the region of the engine facing the end of the cylinder on the cylinder and includes a mounting flange, with which the fuel pump can be attached to a housing of the internal combustion engine.
  • a fastening part thus serves simultaneously as a mounting flange of the fuel pump on the housing of the internal combustion engine, eg. At the engine block or on the crankcase, and for fastening the cylinder head on the cylinder of the fuel pump.
  • the cylinder itself does not have to have any holes or openings at which the corresponding fastening means can engage.
  • the annular fastening part is supported in the region of the cylinder head facing the end of the cylinder on the cylinder.
  • the fastening means do not extend over the entire length of the cylinder, but the attachment of the cylinder head takes place in total only in the region of the cylinder head facing the end of the cylinder.
  • a particularly simple and inexpensive to implement attachment of the fastening part on the cylinder may consist in that the fastening part is supported on a ring element, which is arranged on a circumferential groove in the cylinder. It is again preferred that the angular position of the fastening part relative to the cylinder is predetermined by a pin which engages in corresponding recesses in the cylinder and in the fastening part.
  • the said circumferential groove is just as easy to bring in the hard cylinder material as the recesses for the pin.
  • a fastening means is preferably a screw in question, which is screwed into a threaded bore in the cylinder head.
  • This may be used under certain circumstances commercially available screws, which are available inexpensively.
  • the effective ranges of the screw lie on the one hand at the screw head and on the other hand at the outer end of the screwed into the threaded hole area.
  • the cylinder head has a cylinder at least partially radially surrounding skirt portion which is sealed relative to the cylinder by a ring seal, wherein between the skirt portion and the cylinder an annular space is present, which is connected to a low pressure region of the fuel pump.
  • This fuel pump achieves optimum sealing between cylinder head and cylinder. Should there be a leak at the biting edge, the leakage fluid is prevented by the ring seal at the outlet. The ring seal is protected from too much stress by the connection of the annular space with the low pressure region of the fuel pump.
  • the cylinder head is secured to the cylinder by means of at least one screw which penetrates the annular contact surface and with a thread in the cylinder or cylinder head cooperates, which is immediately adjacent to the contact surface.
  • the attachment of the cylinder head to the cylinder is not effected by a tension between a fastening part and the cylinder head, but by an immediate screwing of the cylinder head on the cylinder.
  • the effective range of the thread which is generally the first few turns, is immediately adjacent to the contact surface. Even with this fuel pump according to the invention thus does not result in a heating of the fuel pump and an associated expansion of the cylinder head and / or the cylinder to a change in the biasing force of the screws or a biasing force between the cylinder head and cylinder, so that inexpensive screws can be used ,
  • the fuel pump comprises a fastening flange with which the fuel pump can be attached to the internal combustion engine, which acts on a ring element which is arranged in a circumferential groove in the cylinder, wherein the angular position of the mounting flange is determined by a pin, which engages in corresponding recesses in the cylinder and in the mounting flange.
  • the distribution is half. With simultaneous tightening of the screws then the total torsion element is equal to or near zero, which reduces the risk of distortion of the cylinder or the cylinder head.
  • the annular contact surface can interact with an annular shoulder on the cylinder. This ultimately means that the axial position of the effective area or the contact surface can be provided at any axial position with respect to the longitudinal axis of the cylinder.
  • the fuel pump can be adapted to a variety of installation conditions in a simple manner.
  • the fuel pump comprises a high-pressure connection part which is fastened to the cylinder head, preferably screwed into it. Since the cylinder head is generally made of a rather soft material, whereas the cylinder is rather made of a hard material due to the high pressure loads, the introduction of the necessary for the attachment of the high-pressure connector threaded hole is relatively easy.
  • the high-pressure connection part is sealed in or on the cylinder.
  • the high pressure area is restricted to the actual cylinder, so that those parts made of a less hard material do not pass through be charged to the high pressure.
  • the cylinder comprises steel and the cylinder head and / or the fastening part or the fastening parts aluminum.
  • the weight of the fuel pump can be reduced, whereby the use for the cylinder ensures the strength required even for high pressures.
  • threads for fastening parts for example high-pressure connection
  • a fuel pump carries in Fig. 1 in total the reference numeral 10.
  • the fuel pump 10 includes a cylinder 12, on which a cylinder head 14 is placed. On the cylinder head 14, in turn, a quantity control valve 16 is placed.
  • a piston 18 is guided and sealed by a piston seal 19. This is offset by a bucket tappet 20 by an eccentric 22 of a drive shaft 24 in a reciprocating motion.
  • the fuel pump 10 is fastened to a housing 26 of an internal combustion engine (not shown) in a manner to be described in more detail.
  • the cylinder 12 has a generally circular cylindrical shape and comprises a smaller diameter in Fig. 1 upper portion 28, a central portion 30 of larger diameter and a lower portion 32 in Fig. 1 in turn with a smaller diameter. Between the upper portion 28 and the middle portion 30, a shoulder 34 is formed, and between the middle portion 30 and the lower portion 32 of the cylinder 12, a shoulder 36 is present.
  • the cylinder 12 is made of steel.
  • a radially extending stepped bore 38 is driven from the side into which a high-pressure port 40 is inserted and sealed by an O-ring seal 42.
  • the cylinder head 14 is altogether as a bell-shaped part educated. With its in Fig. 1 lower end face 44, it bears against the shoulder 34 of the cylinder 12. Opposite the cylinder 12, the cylinder head 14 is sealed by an O-ring seal 46. In the upper region of the cylinder head 14 in FIG. 1, a radially extending bore 48 is introduced, which represents a low-pressure connection. The cylinder head 14 is open at the top. Into the opening, the quantity control valve 16 is inserted and this is fastened by screws 50 on the cylinder head 14. The screws 50 are indicated in Fig. 1 only dash-dotted lines.
  • annular fastening part 52 is arranged around the lower portion 32 of the cylinder 12. Its inner diameter corresponds approximately to the outer diameter of the lower portion 32 of the cylinder 12. The annular fastening part 52 abuts the shoulder 36 of the cylinder 12. In the annular attachment member 52 distributed over the circumference a plurality of stepped bores 54 are introduced. These are designed so that a head 56 of a clamping screw 58 can be received in them. The clamping screw 58 is screwed with its threaded portion 60 in a threaded bore 62 in the cylinder head 14. In this way, the cylinder 12 can be clamped between the cylinder head 14 and the annular fixing part 52.
  • the clamping screws 58 are screwed into the threaded holes 62 in the cylinder head 14 and clamped between the fastening part 52 and the cylinder head 14.
  • This effective range carries in Fig. 1, the reference numeral 64.
  • the reference numeral 66 In the longitudinal direction of the cylinder 12 seen (the longitudinal axis carries in Fig. 1, the reference numeral 66) is thus the annular contact surface 44 of the cylinder head 14 to the cylinder 12 in about same height as the effective area 64.
  • screws 68 By these screws 68, the annular fastening part 52 is screwed to a flange portion 69 on the housing 26 of the internal combustion engine.
  • the sealing between the annular fastening part 52 and the cylinder 12 takes place by means of an O-ring seal 74.
  • the fastening of the high-pressure connection 40 takes place on the cylinder head 14.
  • the high-pressure connection 40 has lateral fastening straps 70 (see FIG ), which are screwed by means of screws 72 in corresponding threaded holes (not visible) in the cylinder head 14.
  • the cylinder 12 shown in FIG. 3 has no sections with different diameters, but is formed as a straight cylindrical part.
  • the sealing between the cylinder head 14 and the cylinder 12 is effected by an annular biting edge 44 formed on the cylinder head 14, which is pressed by the clamping screws 58 against an upper end face 34 of the cylinder 12.
  • a skirt portion 82 Approximately from the axial position of the biting edge 44 extends from an upper portion 80 of the cylinder head 14, a skirt portion 82 in the axial direction toward the annular mounting portion 52. At the bottom in Fig. 3 end of the skirt portion 82 is a radially inwardly facing annular web 84 is present, which is sealed via an O-ring seal 46 relative to the cylinder 12.
  • annular space 86 is present between the skirt portion 82 and the cylinder 12. This is connected via a discharge channel 88 with the low-pressure inlet 48.
  • FIG. 3 Another difference of the illustrated in Fig. 3 embodiment of a fuel pump 10 to the in Figs. 1 and 2 illustrated embodiment relates to the sealing of the piston 18 to the housing 26 of the internal combustion engine. While the sealing ring 19 in the in Figs. 1 and 2 illustrated embodiment in a stage (without reference numeral) is received in the cylinder 12, the seal is carried out in the embodiment shown in Fig. 3 by the inclusion of the piston seal 19 in the annular attachment member 52nd
  • the corresponding stepped bore can be introduced into this easier than in the cylinder 12, which is made of a hard steel.
  • the annular fastening part 52 is thus part of the sealing of the piston 18 relative to the housing 26 of the internal combustion engine and is via O-rings 74a, 74b relative to the cylinder 12 on the one hand and the housing 26 of the internal combustion engine sealed.
  • a circumferential groove (without reference numeral) is introduced, in which a retaining ring 92 as captive of the piston 18, for example. For the transport of the piston pump 10 is inserted.
  • FIG. 4 a further embodiment of a fuel pump 10 is shown.
  • the cylinder head 14 in FIG. 4 has no apron section. Instead, only one axially extending over a short distance guide ring 82 is formed on the upper portion 80 of the cylinder head 14, which is sealed relative to the cylinder 12 by an O-ring seal 46.
  • the annular fastening part 52 is designed so that that section of the through-opening in the annular fastening part 52, which lies directly above the piston seal 19, is slightly radially spaced from the piston 18.
  • the space formed there between the annular fastening part 52 and the piston 18 acts as a relief chamber 88, which via a connecting channel 90 in Fig. 4 not shown manner with the low pressure inlet 48 (or in an embodiment not shown with a leading to a fuel tank return line) is connected.
  • the piston seal 19 is also relieved.
  • an adjusting ring 52 is provided, which is arranged radially surrounding it in the region of the upper end of the cylinder 12 in FIG. 5.
  • a circumferential groove (without reference numeral) is introduced into the cylinder 12, in which a locking ring 96 is inserted.
  • a paragraph (without reference numeral) is supported on the inner circumferential surface of the mounting ring 52.
  • the clamping screws 58 with which the cylinder head 14 is acted upon against the cylinder 12, are clamped between the mounting ring 52 and the cylinder head 14.
  • the sealing of the cylinder head 14 relative to the cylinder 12 takes place in the embodiment shown in FIG. 5 by an O-ring seal 46, which is inserted into an annular groove (without reference numeral) in the cylinder head 14.
  • a flange 69 is designed in two parts in Fig. 5.
  • a part 69a of the flange 69 serves as a pure clamping ring, which is fastened on the one hand via screws 68 on the housing 26 of the internal combustion engine and on the other hand a retaining ring 98 is supported, which is inserted into a circumferential groove (without reference numeral) in the cylinder 12.
  • a centering pin 100 is provided which engages in corresponding recesses (without reference numerals) on the one hand in the cylinder 12 and on the other hand in the clamping ring 69a.
  • the other part 69b of the flange 69 serves to seal between the cylinder 12, the piston 18 and the housing 26 of the internal combustion engine. In him also the discharge channel 90 is present, through which the piston seal 19 is relieved.
  • the threads in the cylinder 12, in which the screws 58 are screwed be alternately formed as left and right-hand thread.
  • an even total number of screws 58 is used, equalize, assuming a simultaneous tightening of the screws 58, the when tightening the screws on the cylinder 12 acting torsional moments.
  • a fuel system 102 is shown. This comprises a fuel tank 104, from which fuel 106 is conveyed by an electric fuel pump 108. Via a low-pressure fuel line 110, the fuel 106 is conveyed to a high-pressure fuel pump 10, which in the manner of one of the embodiments of FIGS. 1 - 6 is formed. From the high-pressure fuel pump 10, the fuel 106 passes via a high-pressure fuel line 112 to a high-pressure fuel collecting line 114, which is commonly referred to as a "rail".
  • a plurality of injectors 116 are connected, which inject the fuel directly into combustion chambers 118 of the internal combustion engine (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (16)

  1. Pompe à carburant, en particulier pompe haute pression (10) pour un système de carburant (102) d'un moteur à combustion interne à injection directe d'essence, avec un piston (18), des moyens d'entraînement (24) pour entraîner le piston (18), un cylindre (12) guidant le piston (18), une culasse (14) qui repose sur le cylindre (12) avec une surface de contact globalement annulaire (44), et au moins un moyen de fixation (58) sollicitant la surface de contact annulaire (44) de la culasse (14) contre le cylindre (12), le moyen de fixation comprenant au moins deux régions actives (56, 64) traversées par la majeure partie de l'écoulement de carburant,
    caractérisée en ce que
    la surface de contact annulaire (44) et une région active (64) du moyen de fixation (58) de la culasse (14) se trouvent sensiblement à la même hauteur, vu dans le sens longitudinal (66) du cylindre (12).
  2. Pompe à carburant (10) selon la revendication 1,
    caractérisée en ce qu'
    un élément de fixation annulaire (52) s'appuie au moins indirectement sur le cylindre (12), le moyen de fixation (58) étant contraint entre l'élément de fixation (52) et la culasse (14).
  3. Pompe à carburant (10) selon la revendication 2,
    caractérisée en ce que
    l'élément de fixation annulaire (52) s'appuie contre le cylindre (12) dans la région de l'extrémité du cylindre (12) orientée vers le moteur à combustion interne, et comprend une bride de fixation (69) fixant la pompe à carburant (10) sur un carter (26) du moteur à combustion interne.
  4. Pompe à carburant (10) selon la revendication 2,
    caractérisée en ce que
    l'élément de fixation annulaire (52) s'appuie sur le cylindre (12) dans la région de l'extrémité du cylindre (12) orientée vers la culasse (14).
  5. Pompe à carburant (10) selon l'une des revendications 3 ou 4,
    caractérisée en ce que
    l'élément de fixation (52) s'appuie sur un élément annulaire (98) monté dans une gorge périphérique dans le cylindre (12).
  6. Pompe à carburant (10) selon la revendication 5,
    caractérisée en ce que
    la position angulaire de l'élément de fixation annulaire (52) par rapport au cylindre (12) est déterminée par une broche (100) qui pénètre dans des évidements correspondants dans le cylindre (12) et dans l'élément de fixation (52).
  7. Pompe à carburant (10) selon l'une des revendications précédentes,
    caractérisée en ce que
    le moyen de fixation est une vis (58) vissée dans un taraudage (62) dans la culasse (14).
  8. Pompe à carburant (10) selon l'une des revendications précédentes,
    caractérisée en ce que
    la surface de contact annulaire est une arête vive (44).
  9. Pompe à carburant (10) selon la revendication 8,
    caractérisée en ce que
    la culasse (14) présente un segment de jupe (82) enveloppant radialement au moins partiellement le cylindre (12), et isolé par rapport au cylindre (12) par une garniture annulaire (85), avec entre le segment de jupe (82) et le cylindre (12) un espace annulaire (86) relié à une zone basse pression (48) de la pompe à carburant (10).
  10. Pompe à carburant (10) selon la revendication 1,
    caractérisée en ce que
    la culasse (14) est fixée sur le cylindre (12) au moyen d'au moins une vis (58) qui traverse la surface de contact annulaire (44) et coopère avec un filetage dans le cylindre (12) ou dans la culasse, au voisinage immédiat de la surface de contact (44).
  11. Pompe à carburant (10) selon la revendication 10,
    caractérisée en ce qu'
    elle comprend une bride de fixation (69) fixant la pompe à carburant (10) sur le carter (26) du moteur à combustion interne, et qui s'appuie sur un élément annulaire (98) monté dans une gorge périphérique dans le cylindre (12), la position angulaire de la bride de fixation (69) par rapport au cylindre (12) étant déterminée par une broche (100) qui pénètre dans des évidements correspondants dans le cylindre (12) et dans la bride de fixation (69).
  12. Pompe à carburant (10) selon l'une des revendications 7 à 11,
    caractérisée en ce qu'
    on prévoit une pluralité de vis (58) dont certaines sont dotées d'un filet à droite et certaines d'un filet à gauche.
  13. Pompe à carburant (10) selon l'une des revendications précédentes,
    caractérisée en ce que
    la surface de contact annulaire (44) collabore avec un épaulement annulaire (34) sur le cylindre (12).
  14. Pompe à carburant (10) selon l'une des revendications précédentes,
    caractérisée en ce qu'
    elle comprend un élément de raccordement haute pression (40) fixé sur la culasse (14), de préférence vissé dans celle-ci.
  15. Pompe à carburant (10) selon la revendication 14,
    caractérisée en ce que
    l'élément de raccordement haute pression (40) est monté de manière étanche dans ou sur le cylindre (12).
  16. Pompe à carburant (10) selon l'une des revendications précédentes,
    caractérisée en ce que
    le cylindre (12) contient de l'acier et la culasse (14) et/ou l'élément de fixation (52, 94) de l'aluminium.
EP20020011421 2001-07-13 2002-05-24 Pompe à combustible haute-pression Expired - Lifetime EP1275845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001134066 DE10134066A1 (de) 2001-07-13 2001-07-13 Kraftstoffpumpe, insbesondere Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer Brennkraftmaschine mit Benzin-Direkteinspritzung
DE10134066 2001-07-13

Publications (3)

Publication Number Publication Date
EP1275845A2 EP1275845A2 (fr) 2003-01-15
EP1275845A3 EP1275845A3 (fr) 2004-01-02
EP1275845B1 true EP1275845B1 (fr) 2006-08-23

Family

ID=7691652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020011421 Expired - Lifetime EP1275845B1 (fr) 2001-07-13 2002-05-24 Pompe à combustible haute-pression

Country Status (3)

Country Link
EP (1) EP1275845B1 (fr)
JP (1) JP2003065175A (fr)
DE (2) DE10134066A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101094988B (zh) * 2004-12-28 2010-09-29 罗伯特·博世有限公司 活塞泵、尤其是用于内燃机的燃料高压泵

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322599B4 (de) * 2003-05-20 2013-08-08 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe
JP2006170184A (ja) * 2004-11-16 2006-06-29 Denso Corp 高圧燃料ポンプ
DE102005007806A1 (de) * 2004-12-28 2006-07-06 Robert Bosch Gmbh Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe für eine Brennkraftmaschine eines Kraftfahrzeugs
JP4215000B2 (ja) 2005-01-19 2009-01-28 株式会社デンソー 高圧ポンプ
JP4453028B2 (ja) * 2005-03-30 2010-04-21 株式会社デンソー 高圧燃料ポンプ
DE102005042196A1 (de) * 2005-09-06 2007-03-08 Robert Bosch Gmbh Kolbenpumpe mit reduziertem Schadraum
JP4648254B2 (ja) * 2006-06-22 2011-03-09 日立オートモティブシステムズ株式会社 高圧燃料ポンプ
JP2008019842A (ja) * 2006-07-14 2008-01-31 Toyota Motor Corp 内燃機関の燃料ポンプ支持構造及びその支持構造に使用されるポンプ支持ブラケット
JP5082935B2 (ja) * 2008-03-05 2012-11-28 株式会社デンソー 高圧燃料ポンプ
DE102009000835A1 (de) * 2009-02-13 2010-08-19 Robert Bosch Gmbh Modulare Niederdruckeinheit und modulare Pumpenanordnung
DE102010001870A1 (de) * 2010-02-12 2011-08-18 Robert Bosch GmbH, 70469 Zylinderkopf für eine Kraftstoffhochdruckpumpe
DE102010027745A1 (de) * 2010-04-14 2011-10-20 Robert Bosch Gmbh Hochdruckpumpe
IT1403245B1 (it) * 2010-11-10 2013-10-17 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
DE102013212261A1 (de) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Hochdruckpumpe
JP6369337B2 (ja) * 2015-01-20 2018-08-08 株式会社デンソー 高圧ポンプ及びその製造方法
JP2016133056A (ja) * 2015-01-20 2016-07-25 株式会社デンソー 高圧ポンプ及びその製造方法
EP3088725B1 (fr) 2015-04-28 2019-07-03 Magneti Marelli S.p.A. Pompe à carburant destinée à un système d'injection directe avec une réduction de contrainte sur la bague de piston
IT201700098475A1 (it) * 2017-09-01 2019-03-01 Bosch Gmbh Robert Gruppo pompa per alimentare carburante ad un motore a combustione interna
DE102019130684A1 (de) * 2019-11-14 2021-05-20 Man Energy Solutions Se Kolbenpumpe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981575A (en) * 1959-04-24 1961-04-25 Southwest Oilfield Products In Reciprocating pump cylinder head and liner retainer
CS191051B1 (en) * 1975-03-27 1979-06-29 Jaromir Indra Injection unit of the injection pump for the combustion engines
DE3404520C2 (de) * 1984-02-09 1997-01-09 Uraca Pumpen Pumpe oder Hydraulikanlage
JPS635158A (ja) * 1986-06-24 1988-01-11 Diesel Kiki Co Ltd ユニツトインジエクタ−
DE19747636B4 (de) * 1997-10-29 2007-11-15 Uhde High Pressure Technologies Gmbh Hochdruckpumpenventil
JP2857139B1 (ja) * 1998-01-30 1999-02-10 三菱電機株式会社 高圧燃料供給ポンプ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101094988B (zh) * 2004-12-28 2010-09-29 罗伯特·博世有限公司 活塞泵、尤其是用于内燃机的燃料高压泵

Also Published As

Publication number Publication date
EP1275845A3 (fr) 2004-01-02
DE10134066A1 (de) 2003-02-06
JP2003065175A (ja) 2003-03-05
EP1275845A2 (fr) 2003-01-15
DE50207909D1 (de) 2006-10-05

Similar Documents

Publication Publication Date Title
EP1275845B1 (fr) Pompe à combustible haute-pression
EP0461212B1 (fr) Pompe d'injection de carburant a commande electrique pour moteurs a combustion interne, en particulier pompe d'injection combinee avec l'injecteur
DE19523287A1 (de) Verbindungsanordnung zum Verbinden eines Abzweigelementes mit einer Hochdruck-Kraftstoffschiene
AT509332B1 (de) Druckrohrstutzen
WO2006069819A1 (fr) Pompe a piston, notamment pompe a carburant haute pression destinee a un moteur a combustion interne
EP1818539B1 (fr) Pompe a pistons radiaux destinée a un système d'injection de carburant présentant une meilleure résistance aux pressions élevées
DE10322603B4 (de) Kolbenpumpe, insbesondere Hochdruck-Kolbenpumpe für Brennkraftmaschinen mit Direkteinspritzung
WO2007012510A1 (fr) Systeme d'injection de carburant pour moteur a combustion interne a injection directe de carburant
DE10117600C1 (de) Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer direkteinspritzenden Brennkraftmaschine, Kraftstoffsystem sowie Brennkraftmaschine
WO2003042534A2 (fr) Element pompe et pompe a piston permettant la generation d'une haute pression de carburant
EP1131553B1 (fr) Reservoir a carburant haute pression pour systeme d'injection de carburant de moteurs a combustion
EP1554487A1 (fr) Dispositif d'injection de carburant d'un moteur a combustion interne
EP1068443A2 (fr) Soupape de pression
WO2016184599A1 (fr) Dispositif de raccordement haute pression, pompe à carburant haute pression et procédé de fabrication d'un dispositif de raccordement haute pression pour une pompe à carburant haute pression
WO2001011226A1 (fr) Accumulateur haute pression pour carburant
EP1373713B1 (fr) Dispositif d'injection de carburant, notamment injecteur, pour moteurs a combustion interne
DE10309311B4 (de) Kraftstoffhockdruckspeicher
DE102009038079B4 (de) Kraftstoffzufuhrvorrichtung sowie Verfahren zum Herstellen einer Kraftstoffzufuhrvorrichtung
EP1597473B1 (fr) Dispositif d'injection de carburant, notamment pour moteur a combustion interne a injection directe de carburant
WO2000031410A1 (fr) Dispositif pour le demontage d'une soupape d'injection de carburant
DE10115856C1 (de) Hochdruck-Kraftstoffpumpe für eine direkteinspritzende Brennkraftmaschine, Kraftstoffsystem für eine direkteinspritzende Brennkraftmaschine, sowie direkteinspritzende Brennkraftmaschine
DE10148350A1 (de) Kraftstoff-Einspritzvorrichtung, insbesondere Injektor für Brennkraftmaschinen mit Direkteinspritzung, sowie Kraftstoffsystem und Brennkraftmaschine
WO2023036646A1 (fr) Pompe à fonctionnement cyclique, en particulier pompe à piston à carburant haute pression
DE102009054938A1 (de) Kraftstoffhochdruckpumpe
EP0906506A1 (fr) Pompe d'injection de carburant pour moteur a combustion interne

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20040702

AKX Designation fees paid

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20041027

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060823

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060823

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50207909

Country of ref document: DE

Date of ref document: 20061005

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20060823

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060823

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110726

Year of fee payment: 10

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50207909

Country of ref document: DE

Effective date: 20121201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121201