EP1776523B1 - Systeme d'injection de carburant - Google Patents

Systeme d'injection de carburant Download PDF

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Publication number
EP1776523B1
EP1776523B1 EP05754068A EP05754068A EP1776523B1 EP 1776523 B1 EP1776523 B1 EP 1776523B1 EP 05754068 A EP05754068 A EP 05754068A EP 05754068 A EP05754068 A EP 05754068A EP 1776523 B1 EP1776523 B1 EP 1776523B1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
passage hole
fuel
low
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 - Fee Related
Application number
EP05754068A
Other languages
German (de)
English (en)
Other versions
EP1776523A1 (fr
Inventor
Hans-Peter Scheurer
Timo Steinbach
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 EP1776523A1 publication Critical patent/EP1776523A1/fr
Application granted granted Critical
Publication of EP1776523B1 publication Critical patent/EP1776523B1/fr
Expired - Fee Related 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • 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
    • F02M2200/60—Fuel-injection apparatus having means for facilitating the starting of engines, e.g. with valves or fuel passages for keeping residual pressure in common rails

Definitions

  • FIG. 1 a common rail fuel injection system is shown schematically.
  • a low-pressure vessel 1 which is also referred to as a fuel tank
  • fuel is conveyed to a high-pressure pump 4 by means of a fuel feed pump 2 via a connecting line 3.
  • a connecting line 3 In the connecting line 3, an overflow valve 6 is arranged.
  • the low-pressure vessel 1, the fuel delivery pump 2 and the connecting line 3 are subjected to low pressure and are therefore assigned to the low-pressure region.
  • FIG. 2 a check valve device according to a first embodiment is shown in section.
  • the check valve device is housed in an adapter housing 31, which has substantially the shape of a circular cylinder.
  • an adapter housing 31 Provided in the adapter housing 31 is a central high-pressure through-hole, through which, as indicated by arrows, high-pressure fuel is conducted from a high-pressure inlet to a high-pressure outlet.
  • the high-pressure input for example, the high-pressure pump or the high-pressure fuel storage is connected.
  • To the high-pressure outlet for example, the high-pressure fuel storage or an injector is connected.

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 (8)

  1. Système d'injection de carburant notamment système d'injection à rampe commune comportant une zone basse pression à partir de laquelle une pompe à carburant haute pression (4) applique une haute pression au carburant et le transfère à un accumulateur de carburant haute pression (12) qui alimente les injecteurs (15), pour injecter le carburant à haute pression dans la chambre de combustion d'un moteur à combustion interne,
    la pompe à haute pression de carburant (4), l'accumulateur à haute pression de carburant (12) et les injecteurs (15) sont associés à une zone haute pression,
    une installation de clapet anti-retour est prévue entre la zone basse pression et la zone haute pression pour qu'une dépression dans la zone haute pression fasse passer le carburant de la zone basse pression dans la zone haute pression, et
    l'installation de clapet anti-retour comporte un accès haute pression, une sortie haute pression et un branchement basse pression (40 ; 65),
    caractérisé en ce que
    l'installation de clapet anti-retour comporte un boîtier d'adaptateur (31 ; 44) ayant un orifice traversant, haute pression (32 ; 45) comportant à une extrémité du boîtier d'adaptateur (31 ; 44), un segment élargi (33 ; 46) logeant une douille de soupape (34 ; 47).
  2. Système d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    la douille de soupape (34) comporte un perçage borgne (36) logeant un ressort de soupape (37) qui pousse une bille de soupape (38) contre une extrémité d'un orifice traversant, basse pression (39) dont l'autre extrémité comporte le branchement basse pression (40).
  3. Système d'injection de carburant selon la revendication 2,
    caractérisé par
    une rainure de liaison (41) prévue dans la douille de soupape (34) reliant le perçage borgne (36) au perçage traversant haute pression (32).
  4. Système d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    la douille de soupape (47) comporte un orifice traversant (51) s'étendant dans la direction radiale, en communication avec l'orifice traversant haute pression (45) et dans lequel est logée une douille de soupape (52) comportant une ouverture (61) vers la zone basse pression et une ouverture (58) vers la zone haute pression (45).
  5. Système d'injection de carburant selon la revendication 4,
    caractérisé en ce qu'
    une bille de soupape (57) est appliquée contre l'ouverture (58) du manchon de soupape (52) vers l'orifice traversant, haute pression (45).
  6. Système d'injection de carburant selon la revendication 5,
    caractérisé en ce que
    la bille formant soupape (57) est appliquée par un ressort de soupape (56) contre l'ouverture (58) du manchon de soupape (52) du côté de l'orifice traversant, haute pression (45).
  7. Système d'injection de carburant selon la revendication 6,
    caractérisé en ce que
    le ressort de soupape (56) et la bille formant soupape (57) sont prévus dans un segment (55) du manchon de soupape (52) pénétrant dans l'orifice traversant, haute pression (45), le manchon de soupape étant ouvert en direction de l'orifice traversant, haute pression (45).
  8. Système d'injection de carburant selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le branchement basse pression (40 ; 65) est relié au retour des injecteurs.
EP05754068A 2004-08-03 2005-06-09 Systeme d'injection de carburant Expired - Fee Related EP1776523B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004037557A DE102004037557A1 (de) 2004-08-03 2004-08-03 Kraftstoffeinspritzsystem
PCT/EP2005/052663 WO2006013128A1 (fr) 2004-08-03 2005-06-09 Systeme d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1776523A1 EP1776523A1 (fr) 2007-04-25
EP1776523B1 true EP1776523B1 (fr) 2008-11-19

Family

ID=34970927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05754068A Expired - Fee Related EP1776523B1 (fr) 2004-08-03 2005-06-09 Systeme d'injection de carburant

Country Status (6)

Country Link
US (1) US7438057B2 (fr)
EP (1) EP1776523B1 (fr)
JP (1) JP2008508470A (fr)
CN (1) CN100578009C (fr)
DE (2) DE102004037557A1 (fr)
WO (1) WO2006013128A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004027507A1 (de) * 2004-06-04 2005-12-22 Robert Bosch Gmbh Kraftstoffeinspritzsystem
DE102005033638A1 (de) * 2005-07-19 2007-01-25 Robert Bosch Gmbh Kraftstoff-Fördereinrichtung, insbesondere für eine Brennkraftmaschine
DE102006020692A1 (de) * 2006-05-04 2007-11-08 Robert Bosch Gmbh Druckregelventil mit Notfahr- und Belüftungsfunktion
DE102007056891A1 (de) * 2007-11-26 2009-05-28 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe für ein Kraftstoffsystem einer Brennkraftmaschine
DE102009027644A1 (de) 2009-07-13 2011-01-20 Robert Bosch Gmbh Kraftstoffeinspritzsystem
DE102009028023A1 (de) * 2009-07-27 2011-02-03 Robert Bosch Gmbh Hochdruck-Einspritzsystem mit Kraftstoffkühlung aus Niederdruckbereich
FR2949512A1 (fr) * 2009-09-02 2011-03-04 Renault Sa Systeme et procede d'injection de carburant a rampe commune pour demarrage a froid
DE102010001834A1 (de) * 2010-02-11 2011-08-11 Robert Bosch GmbH, 70469 Verfahren zur Versorgung einer Hochdruckpumpe in einem Kraftstoffeinspritzsystem einer Brennkraftmaschine mit Kraftstoff sowie Kraftstoffeinspritzsystem
DE102010027789A1 (de) * 2010-04-15 2011-10-20 Ford Global Technologies, Llc Kraftstoffeinspritzsystem zum schnellen Druckaufbau bei erneutem Start des Verbrennungsmotors mit Stopp-Start-System
FR2969216B1 (fr) * 2010-12-20 2013-01-18 Bosch Gmbh Robert Soupape de limitation de pression et correction de depression d'accumulateur haute pression de carburant
DE102010064115A1 (de) 2010-12-23 2012-06-28 Robert Bosch Gmbh Injektoranordnung, die vorzugsweise für Erdgas dient
DE102011002697A1 (de) * 2011-01-14 2012-07-19 Robert Bosch Gmbh Pumpe, insbesondere für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine
DE102011089478B3 (de) 2011-12-21 2013-06-27 Continental Automotive Gmbh Einspritzsystem
DE102013208707A1 (de) * 2013-05-13 2014-11-13 Robert Bosch Gmbh Überstromventil für eine Hochdruckpumpe in einem Kraftstoffeinspritzsystem
DE102015210756A1 (de) * 2015-06-12 2016-12-15 Robert Bosch Gmbh Gasinjektoranordnung, Betriebsverfahren für eine Gasinjektoranordnung und Brennkraftmaschine
CN106401774A (zh) * 2015-07-31 2017-02-15 罗伯特·博世有限公司 燃料喷射***及操作该燃料喷射***的方法
CN111433450B (zh) * 2017-12-08 2022-01-28 沃尔沃卡车集团 用于共轨燃料喷射***的装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX9403372A (es) 1993-05-06 1995-01-31 Cummins Engine Co Inc Bomba de alta presion de desplazamiento variable para sistemas deinyeccion de combustible a deposito comun.
JP2001304067A (ja) 2000-04-20 2001-10-31 Bosch Automotive Systems Corp 高圧燃料供給ポンプ
JP2002004975A (ja) * 2000-06-21 2002-01-09 Toyota Motor Corp 高圧燃料供給装置
US20040250795A1 (en) * 2003-06-10 2004-12-16 Visteon Global Technologies, Inc. Managing fuel volume change in fuel rail
DE10332484A1 (de) 2003-07-17 2005-02-10 Robert Bosch Gmbh Kraftstoffeinspritzsystem für Verbrennungskraftmaschinen
US6792918B1 (en) * 2003-09-29 2004-09-21 General Motors Corporation Vacuum relief modular reservoir assembly
US7066152B2 (en) * 2004-09-03 2006-06-27 Ford Motor Company Low evaporative emission fuel system depressurization via solenoid valve

Also Published As

Publication number Publication date
US7438057B2 (en) 2008-10-21
DE502005006014D1 (de) 2009-01-02
CN1993546A (zh) 2007-07-04
JP2008508470A (ja) 2008-03-21
DE102004037557A1 (de) 2006-03-16
US20080029065A1 (en) 2008-02-07
EP1776523A1 (fr) 2007-04-25
CN100578009C (zh) 2010-01-06
WO2006013128A1 (fr) 2006-02-09

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