EP2209988B1 - Flasque d'une pompe à carburant haute pression - Google Patents

Flasque d'une pompe à carburant haute pression Download PDF

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Publication number
EP2209988B1
EP2209988B1 EP08804357.5A EP08804357A EP2209988B1 EP 2209988 B1 EP2209988 B1 EP 2209988B1 EP 08804357 A EP08804357 A EP 08804357A EP 2209988 B1 EP2209988 B1 EP 2209988B1
Authority
EP
European Patent Office
Prior art keywords
pump
outer part
flange
pressure fuel
pressure
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.)
Not-in-force
Application number
EP08804357.5A
Other languages
German (de)
English (en)
Other versions
EP2209988A1 (fr
Inventor
Friedrich Boecking
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 EP2209988A1 publication Critical patent/EP2209988A1/fr
Application granted granted Critical
Publication of EP2209988B1 publication Critical patent/EP2209988B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • 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

Definitions

  • the invention relates to a high-pressure fuel pump according to the preamble of claim 1.
  • Such a high pressure fuel pump is out of the WO 2005/052356 A2 known, which consists of a housing in which a pump piston is arranged, and a front side arranged on the pump housing flange.
  • a pump drive shaft is also mounted, which imparts a movement to the pump piston via an eccentric and a polygonal design.
  • a pressure chamber located above the pump piston is connected on the one hand to an inlet of a low-pressure circuit and on the other hand to a high-pressure valve of a high-pressure circuit.
  • the flange carries on the one hand a bearing point of the pump drive shaft and on the other lines of the inlet of the low-pressure circuit to the pressure chamber of the pump piston.
  • a high-pressure fuel pump which has a pump housing and a flange connected thereto.
  • a pump drive shaft is mounted on the one hand in the pump housing and on the other hand in the flange.
  • the flange accommodates a bearing of the pump drive shaft and lines of the low pressure circuit.
  • the flange also has a coupling connected to the pump drive shaft.
  • the pump flange is divided into an inner and an outer part, wherein the inner part receives the bearing point of the pump camshaft and the outer part elements of the low-pressure circuit.
  • the inner part of the flange can be made as a rotationally symmetrical component, while the outer part of the conditions and connections of the pump housing and the internal combustion engine can be adjusted. Due to the rotationally symmetrical design of the inner part of a higher precision in the production can be achieved, which meets the requirements for the management of the pump camshaft.
  • the inner and the outer part of the pump flange on matching mounting points on the pump housing are solvable attached. By this measure, the number of attachment points is reduced and also facilitates assembly.
  • the outer part of the pump flange has annular grooves for connection to fuel lines of the pump housing.
  • the inner part of the pump flange has at least one shaft sealing ring.
  • an inlet, a return and a metering unit of the low-pressure circuit are integrated into the outer part of the pump flange.
  • the outer part is guided over the inner part of the pump flange.
  • the outer part has to guide on a the inner part facing end side via a web.
  • the sole FIGURE is a sectional view of the flange portion of the high pressure fuel pump cut along the pump camshaft.
  • the pump flange 2 consisting of the inner part 4 and the outer part 5, is arranged on the front side on the pump housing 1, wherein regions of the inner part of the pump flange 4 protrude into the pump housing 1 to receive the bearing 6 of the pump camshaft 3.
  • a shaft seal 9 is also arranged in a storage 6 projecting recess of the inner part 4 of the pump flange 2.
  • the outer part 5 is placed, which is guided over the web 14 on the inner part 4.
  • the inner part 4 and the outer part 5 are connected to the pump housing 1 via the attachment points 13a and 13b.
  • a metering unit 12 which regulates the fuel quantity of the high-pressure pump.
  • an inlet 10 extends to an annular groove 7, which is in register with a fuel line of the pump housing 1.
  • This fuel line of the pump housing 1 is in communication with one or more pressure chambers of the high-pressure fuel pump in connection, in which the high-pressure fuel is generated during operation of the pump.
  • a return line the pump housing 1 with an annular groove 8 and further connected to the return line 11 to be able to trace back leakage in the fuel tank, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (7)

  1. Pompe à carburant haute pression pour le fonctionnement d'un moteur à combustion interne connectée à un circuit basse pression et un circuit haute pression et constituée d'un carter de pompe (1) et d'un flasque de pompe (2) par le biais duquel celle-ci est fixée de manière amovible au moteur à combustion interne, un arbre à came de pompe (3) étant prévu pour comprimer du carburant provenant du circuit basse pression par le mouvement d'au moins un piston de pompe et pour le refouler vers le circuit haute pression, caractérisée en ce que le flasque de pompe (2) est divisé en une partie intérieure (4) et une partie extérieure (5), la partie intérieure (4) recevant un support sur palier (6) de l'arbre à came de pompe (3) et la partie extérieure (5) recevant des éléments du circuit basse pression, et en ce que la partie intérieure (4) et la partie extérieure (5) sont fixées de manière amovible au carter de pompe (1) par le biais de points de fixation en coïncidence (13a, 13b).
  2. Pompe à carburant haute pression selon la revendication 1, caractérisée en ce que la partie extérieure (5) du flasque de pompe (2) présente des rainures annulaires (7, 8) pour la connexion à des conduites en plastique du carter de pompe (1).
  3. Pompe à carburant haute pression selon la revendication 1 ou 2, caractérisée en ce que la partie intérieure (4) présente au moins une bague d'étanchéité pour arbre (9).
  4. Pompe à carburant haute pression selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une alimentation (10), un retour (11) et une unité de dosage (12) du circuit basse pression sont intégrés dans la partie extérieure (5).
  5. Pompe à carburant haute pression selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie extérieure (5) est guidée par le biais de la partie intérieure (4).
  6. Pompe à carburant haute pression selon la revendication 5, caractérisée en ce que la partie extérieure (5) dispose d'une nervure (14) pour le guidage sur un côté frontal tourné vers la partie intérieure (4).
  7. Pompe à carburant haute pression selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie extérieure (5) présente des points de vissage sur le côté tourné vers le moteur à combustion interne.
EP08804357.5A 2007-10-11 2008-09-18 Flasque d'une pompe à carburant haute pression Not-in-force EP2209988B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710048853 DE102007048853A1 (de) 2007-10-11 2007-10-11 Flansch einer Hochdruckkraftstoffpumpe
PCT/EP2008/062415 WO2009049984A1 (fr) 2007-10-11 2008-09-18 Flasque d'une pompe à carburant haute pression

Publications (2)

Publication Number Publication Date
EP2209988A1 EP2209988A1 (fr) 2010-07-28
EP2209988B1 true EP2209988B1 (fr) 2016-01-13

Family

ID=40134785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08804357.5A Not-in-force EP2209988B1 (fr) 2007-10-11 2008-09-18 Flasque d'une pompe à carburant haute pression

Country Status (7)

Country Link
US (1) US20100239445A1 (fr)
EP (1) EP2209988B1 (fr)
JP (1) JP5074597B2 (fr)
KR (1) KR20100067665A (fr)
CN (1) CN101821493B (fr)
DE (1) DE102007048853A1 (fr)
WO (1) WO2009049984A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009028795A1 (de) * 2009-08-21 2011-02-24 Robert Bosch Gmbh Kraftstoffhochdruckpumpe
CN103994000A (zh) * 2014-05-25 2014-08-20 辽宁新风企业集团有限公司 柴油机用单缸高压油泵
DE102016217409A1 (de) * 2016-09-13 2018-03-15 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB573150A (en) * 1943-03-08 1945-11-08 Thomas Edward Beacham Improvements in or relating to fuel pumps
US3777622A (en) * 1972-03-24 1973-12-11 Gen Motors Corp Pumps and motors
JPS6131675A (ja) * 1984-07-24 1986-02-14 Nippon Denso Co Ltd 可変容量ポンプ
DE19804275A1 (de) * 1998-02-04 1999-08-12 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckversorgung
DE19856351C1 (de) * 1998-12-07 2000-04-13 Bosch Gmbh Robert Radialkolbenpumpe
IT1308782B1 (it) * 1999-07-02 2002-01-10 Elasis Sistema Ricerca Fiat Perfezionamenti ad una pompa ad alta pressione per l'alimentazione dicombustibile ad un motore a combustione interna.
IT1308780B1 (it) * 1999-07-02 2002-01-10 Elasis Sistema Ricerca Fiat Pompa ad alta pressione munita di valvola di intercettazione perl'alimentazione di combustibile ad un motore a combustione interna.
JP3685317B2 (ja) * 2000-02-18 2005-08-17 株式会社デンソー 燃料噴射ポンプ
JP3852756B2 (ja) * 2001-02-07 2006-12-06 株式会社デンソー 燃料噴射ポンプ
US6916158B2 (en) * 2003-04-30 2005-07-12 Actuant Corporation Radial piston pump
JP4052220B2 (ja) * 2003-10-08 2008-02-27 株式会社デンソー 燃料噴射ポンプ
DE10355029A1 (de) 2003-11-25 2005-06-23 Robert Bosch Gmbh Hochdruckpumpe, insbesondere für eine Kraftstoffeinsprizeinrichtung einer Brennkraftmaschine
JP4134896B2 (ja) * 2003-12-15 2008-08-20 株式会社デンソー 燃料供給ポンプ
JP2006118448A (ja) * 2004-10-22 2006-05-11 Denso Corp 燃料噴射ポンプ
CN2769541Y (zh) * 2004-12-09 2006-04-05 重庆红江机械厂 滑阀式等压喷油泵

Also Published As

Publication number Publication date
US20100239445A1 (en) 2010-09-23
JP2011501009A (ja) 2011-01-06
CN101821493A (zh) 2010-09-01
DE102007048853A1 (de) 2009-04-16
WO2009049984A1 (fr) 2009-04-23
CN101821493B (zh) 2012-11-14
JP5074597B2 (ja) 2012-11-14
KR20100067665A (ko) 2010-06-21
EP2209988A1 (fr) 2010-07-28

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