EP1129285B1 - Accumulateur de carburant haute pression - Google Patents

Accumulateur de carburant haute pression Download PDF

Info

Publication number
EP1129285B1
EP1129285B1 EP00969187A EP00969187A EP1129285B1 EP 1129285 B1 EP1129285 B1 EP 1129285B1 EP 00969187 A EP00969187 A EP 00969187A EP 00969187 A EP00969187 A EP 00969187A EP 1129285 B1 EP1129285 B1 EP 1129285B1
Authority
EP
European Patent Office
Prior art keywords
pressure fuel
pressure
spring
fuel accumulator
hole
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
EP00969187A
Other languages
German (de)
English (en)
Other versions
EP1129285A1 (fr
Inventor
Kurt Frank
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 EP1129285A1 publication Critical patent/EP1129285A1/fr
Application granted granted Critical
Publication of EP1129285B1 publication Critical patent/EP1129285B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations

Definitions

  • the invention relates to a high-pressure fuel storage for a Common rail fuel injection system of an internal combustion engine according to the preamble of claim 1.
  • a high-pressure pump delivers possibly with the aid of a prefeed pump, the Fuel to be injected from a tank in the central High-pressure fuel storage, referred to as common rail becomes. From the rail high pressure lines lead to the individual Injectors associated with the engine cylinders. The Injectors are dependent on the operating parameters of Internal combustion engine individually controlled by the engine electronics, to fuel in the combustion chamber of the internal combustion engine inject. Due to the high-pressure fuel storage are the Pressure generation and injection are decoupled from each other.
  • a conventional high pressure fuel storage is e.g. in the DE 196 40 480 described.
  • the well-known high-pressure fuel storage consists of an elongated, tubular body with several connections for the supply of Fuel injection valves, also referred to as injectors become.
  • the tubular Body also has the function of vibration damping about its volume and the function of the distribution of the Fuel over the connections.
  • pressure oscillations Depending on the vote in the system occur, especially in a small pipe inside diameter and a large pipe length, pressure oscillations on.
  • the Pressure oscillations cause some injectors due to inject too little into the formation of a standing wave.
  • back and forth running pressure waves to cause the injectors to alternately or stochastically one inject too little fuel.
  • To the vibrations in the To dampen rail a relatively large volume is needed. The large volume makes it more difficult and expensive Design of the rail.
  • Vibration damping device consists of a concentric arranged to the actual high-pressure fuel storage pipe, which has several openings. Of the High-pressure fuel storage is through the Vibration damping device with high pressure Fuel supplied. Before this fuel to the injectors He must pass through the breakthroughs of the Vibration damping device flow. These Vibration damping device is extremely expensive and because the prevailing in a high-pressure fuel storage large Also hard to handle in terms of strength. The same applies to JP known from the Patent Abstracts of Japan 06346818 A and JP 08261099 A.
  • the object of the invention is a high-pressure fuel storage the type described above with a higher strength and a longer life than conventional To provide high-pressure fuel storage.
  • high-pressure fuel storage according to the invention should still be simple and inexpensive to produce.
  • the task is in a high-pressure fuel storage for a Common rail fuel injection system of an internal combustion engine, with several connection openings, in particular connection openings for the supply and removal of fuel as well Port openings for sensors and valves, etc., thereby solved that the high-pressure fuel storage with a Vibration damping device with the characterizing Features of claim 1 is equipped.
  • the bypass piston becomes an active vibration damping allows.
  • Another particular embodiment of the invention is characterized characterized in that the vibration damping device of at least one bypass piston is formed, which is against a Spring movable back and forth in at least one socket is received, which at the high-pressure fuel storage is appropriate.
  • This embodiment provides the advantage that the assembly of the bypass piston is simplified. In addition, can this embodiment without any special changes on conventional high-pressure fuel storage can be applied.
  • the through hole ensures that a static Pressure equalization between the separated by the bypass piston Areas of Fuel high pressure accumulator or the socket can be done.
  • the flow-promoting device may be e.g. around a rounding or a reduction act.
  • the other side of the Through hole can be sharp-edged. Thereby is achieved that the evasive movement of the piston at a occurring in the high-pressure fuel pressure surge against the Spring takes place.
  • FIG. 1 shows a detail of a high-pressure fuel accumulator shown, which is an elongated, tubular housing. 1 includes. In the tubular housing 1 forms a Through hole 2 a storage space for the fuel. The Through hole 2 is at both ends by means of Closure plugs 3 and 4 closed high-pressure-tight. Furthermore is the housing 1 with a series of terminals 5-10 fitted. The connections 5 - 10 are used to connect the High-pressure fuel accumulator with the high pressure pump and the individual injectors. In addition, on the housing 1 a plurality of fasteners (not shown) attached, the for attachment of the high-pressure fuel accumulator to the Serve internal combustion engine.
  • a plurality of fasteners (not shown) attached, the for attachment of the high-pressure fuel accumulator to the Serve internal combustion engine.
  • the through hole 2 is connected via a plurality of terminals 5 a high-pressure pump and the individual injectors in conjunction. For reasons of clarity, only one is shown in FIG Terminal 5 is shown.
  • a bypass piston 50 back and forth movably received. Between the bypass piston 50 and the Sealing plug 3, a spring 51 is arranged. Of the Evasive piston 50 is provided with an axial through hole 52 fitted. At the end facing the spring 51 of the Through hole 52 is a countersink 55 is provided. At the of the spring 51 facing away from the through hole 52nd sharp-edged. It follows that the annular surface 54 on the side facing away from the spring 51 side is slightly larger than on the side with the sinking 55.
  • the Vibration damping device integrated in a socket 65, on a connection 5 of the high-pressure fuel storage is screwed on.
  • a sealing plug 66 is the Socket 65 sealed to the environment.
  • a Ausweichkolben 50 reciprocally received added.
  • a compression spring 51 Between the Evasive piston 50 and the stopper 66 is located a compression spring 51. Otherwise, the bypass piston 50 works as well as those recorded in the through hole 2 Bypass piston.
  • the evasive piston 50 shown in FIG has the same as the bypass piston described above Through hole 52 with a reduction 55.

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 (2)

  1. Rampe de carburant haute pression pour un système d'injection de carburant à rampe commune d'un moteur à combustion interne, comportant :
    plusieurs ouvertures de raccordement (5 à 10), en particulier des ouvertures de raccordement pour apporter et évacuer du carburant, ainsi que des ouvertures de raccordement pour des capteurs et des soupapes, etc.,
    un boítier (1) pourvu d'une chambre interne (2),
    une installation d'amortissement de vibrations (14) logée dans la chambre interne (2), l'installation d'amortissement de vibrations étant formée d'au moins un piston alternatif (50) logé dans la rampe haute pression en pouvant aller et venir contre un ressort (51), le piston alternatif (50) étant muni d'un trou de passage (52),
    caractérisé en ce que
    le côté du trou de passage (52) orienté vers le ressort (51) est équipé d'une installation favorisant l'écoulement (55).
  2. Rampe de carburant haute pression selon la revendication 1,
    caractérisé en ce que
    l'installation d'amortissement de vibrations est formée d'au moins un piston alternatif (50) qui peut aller et venir contre un ressort (51) dans au moins un coussinet (65) rapporté sur la chambre de carburant haute pression.
EP00969187A 1999-09-08 2000-08-18 Accumulateur de carburant haute pression Expired - Lifetime EP1129285B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19942855A DE19942855A1 (de) 1999-09-08 1999-09-08 Kraftstoffhochdruckspeicher
DE19942855 1999-09-08
PCT/DE2000/002820 WO2001018385A1 (fr) 1999-09-08 2000-08-18 Accumulateur de carburant haute pression

Publications (2)

Publication Number Publication Date
EP1129285A1 EP1129285A1 (fr) 2001-09-05
EP1129285B1 true EP1129285B1 (fr) 2005-11-09

Family

ID=7921199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00969187A Expired - Lifetime EP1129285B1 (fr) 1999-09-08 2000-08-18 Accumulateur de carburant haute pression

Country Status (6)

Country Link
US (1) US6615800B1 (fr)
EP (1) EP1129285B1 (fr)
JP (1) JP2003508682A (fr)
CZ (1) CZ296982B6 (fr)
DE (2) DE19942855A1 (fr)
WO (1) WO2001018385A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003008796A1 (fr) * 2001-07-16 2003-01-30 Usui Kokusai Sangyo Kaisha Ltd. Systeme de suppression de pulsations de pression d'un combustible
US6745798B2 (en) * 2001-09-06 2004-06-08 Siemens Vdo Automotive Corporation Apparatus, system, and method for reducing pressure pulsations and attenuating noise transmission in a fuel system
DE10217592A1 (de) * 2002-04-19 2003-11-06 Siemens Ag Injektor zur Einspritzung von Kraftstoff
US6905002B2 (en) * 2002-06-21 2005-06-14 International Engine Intellectual Property Company, Llc Acoustic wave attenuator for a rail
US6848477B2 (en) * 2003-01-14 2005-02-01 Visteon Global Technologies, Inc. Fuel pressure damping system and method
FI119445B (fi) * 2004-10-29 2008-11-14 Waertsilae Finland Oy Polttomoottorin polttoaineen syöttöjärjestelmän paineen värähtelyn vaimennin
DE102004056414A1 (de) * 2004-11-23 2006-05-24 Robert Bosch Gmbh Einrichtung zur Dämpfung von Flüssigkeitsdruckwellen in einem Flüssigkeit führenden und/oder speichernden Mittel
FR2889260A3 (fr) * 2005-07-26 2007-02-02 Renault Sas Rampe commune d'alimentation en carburant pour moteur, comprenant deux chambres
FR2891875A3 (fr) * 2005-10-07 2007-04-13 Renault Sas Dispositif d'injection a rampe commune pour moteur a combustion interne et injection de carburant
DE102006003639A1 (de) * 2006-01-26 2007-08-02 Robert Bosch Gmbh Hochdruckspeicherkörper mit integriertem Verteilerblock
EP2110542A1 (fr) 2008-04-17 2009-10-21 Continental Automotive GmbH Rampe de carburant d'un moteur à combustion
US8561593B2 (en) * 2010-03-05 2013-10-22 Caterpillar Inc. Range of engines using common rail fuel system with pump and rail assemblies having common components
US8251047B2 (en) * 2010-08-27 2012-08-28 Robert Bosch Gmbh Fuel rail for attenuating radiated noise
DE102010048161A1 (de) * 2010-10-11 2012-04-12 Volkswagen Ag Kraftstoff-Verteilerleiste für eine Brennkraftmaschine
DE102011118756A1 (de) * 2011-11-17 2013-05-23 L'orange Gmbh Druckspeicher sowie Kraftstoffeinspritzeinrichtung mit einem solchen
DE102012001926A1 (de) * 2012-02-02 2013-08-08 Benteler Automobiltechnik Gmbh Kraftstoffverteilerleiste
DE102012220661A1 (de) * 2012-11-13 2014-05-15 Robert Bosch Gmbh Brennstoffverteiler, insbesondere Brennstoffverteilerleiste für gemischverdichtende, fremdgezündete Brennkraftmaschinen
DE102015220550A1 (de) 2015-10-21 2017-04-27 Ford Global Technologies, Llc Kraftstoffeinspritzdüse
DE102017213387A1 (de) * 2017-08-02 2019-02-07 Robert Bosch Gmbh Verteilervorrichtung für eine Wassereinspritzvorrichtung einer Brennkraftmaschine
CN107237708A (zh) * 2017-08-14 2017-10-10 安徽江淮汽车集团股份有限公司 一种高压油轨的固定结构
CN114017225B (zh) * 2021-12-03 2024-07-12 上汽通用五菱汽车股份有限公司 一种基于孔板的降低燃油脉动激振力的降噪结构

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6388267A (ja) * 1986-10-01 1988-04-19 Nippon Denso Co Ltd 電磁式燃料噴射弁
DE4006501A1 (de) * 1990-03-02 1991-09-05 Bayerische Motoren Werke Ag Kraftstoffverteilerleitung
DE4131501A1 (de) * 1991-09-21 1993-03-25 Bosch Gmbh Robert Daempfervorrichtung
JP3149565B2 (ja) * 1992-09-29 2001-03-26 株式会社デンソー 蓄圧式燃料噴射装置
DE4313852B4 (de) * 1993-04-28 2004-11-25 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
JP3355699B2 (ja) * 1993-06-11 2002-12-09 株式会社デンソー 蓄圧容器
DE4341368A1 (de) * 1993-12-04 1995-06-08 Bosch Gmbh Robert Dämpferelement zur Dämpfung von Druckschwingungen
DE19544241A1 (de) * 1994-12-10 1996-06-13 Volkswagen Ag Einrichtung zur geräuscharmen Hochdruckeinspritzung von Kraftstoff
JPH08261099A (ja) * 1995-03-24 1996-10-08 Toyoda Gosei Co Ltd 燃料圧力脈動減衰装置
DE19544223B4 (de) * 1995-11-28 2005-11-24 Robert Bosch Gmbh Schwingungsdämpfer zur Dämpfung von Flüssigkeitsschwingungen in einem hydraulischen, schlupfgeregelten Bremssystem von Kraftfahrzeugen
US5617827A (en) * 1995-12-26 1997-04-08 General Motors Corporation Fuel rail
JPH09310661A (ja) * 1996-05-20 1997-12-02 Denso Corp 直噴式ガソリンエンジンの燃料供給装置
DE19640480B4 (de) * 1996-09-30 2004-04-22 Robert Bosch Gmbh Kraftstoffhochdruckspeicher
US6125890A (en) * 1996-07-01 2000-10-03 Dayco Products, Inc. Energy attenuation device for a fluid-conveying line and method of attenuating energy in such a line
DE19635450C1 (de) * 1996-08-31 1997-10-23 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzeinrichtung mit ein Membranelement aufweisendem ölelastischem Druckspeicher
DE19744762A1 (de) * 1997-03-18 1998-10-01 Poppe & Potthoff Gmbh & Co Einspritzeinrichtung für einen Dieselmotor
DE19720913C1 (de) * 1997-05-16 1998-08-20 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzsystem mit gemeinsamem Vorspeicher
US5845621A (en) * 1997-06-19 1998-12-08 Siemens Automotive Corporation Bellows pressure pulsation damper
US5896843A (en) * 1997-11-24 1999-04-27 Siemens Automotive Corporation Fuel rail damper
DE19806595A1 (de) * 1998-02-18 1999-08-19 Volkswagen Ag Einrichtung zur Verteilung von Kraftstoff für eine Brennkraftmaschine
US6314942B1 (en) * 2000-04-25 2001-11-13 Siemens Automotive Corporation Fuel pressure dampening element
US6390131B1 (en) * 2000-09-15 2002-05-21 Siemens Automotive Corporation Retaining clip and assembly for internal dampening element

Also Published As

Publication number Publication date
JP2003508682A (ja) 2003-03-04
CZ296982B6 (cs) 2006-08-16
DE50011562D1 (de) 2005-12-15
US6615800B1 (en) 2003-09-09
DE19942855A1 (de) 2001-03-22
EP1129285A1 (fr) 2001-09-05
CZ20011575A3 (cs) 2002-03-13
WO2001018385A1 (fr) 2001-03-15

Similar Documents

Publication Publication Date Title
EP1129285B1 (fr) Accumulateur de carburant haute pression
EP0996823B1 (fr) Soupape de limitation de pression
EP2516839B1 (fr) Dispositif d'injection de combustible
DE102006027780A1 (de) Kraftstoffinjektor
DE112013002245T5 (de) Mit Verbundfeder arbeitender Impulsdämpfer
DE102007001363A1 (de) Injektor zum Einspritzen von Kraftstoff in Brennräume von Brennkraftmaschinen
EP0277939B1 (fr) Dispositif d'injection de combustible
DE102011105351A1 (de) Treibstoffsystem das Speicher und Strömungsbegrenzer aufweist
DE112017005337T5 (de) Montagestruktur für Kraftstoffverteilerleitung
DE102006017034B4 (de) Piezo-Aktor, Verfahren zum Herstellen eines Piezo-Aktors und Einspritzsystem mit einem solchen
WO2017129504A1 (fr) Pompe à carburant haute pression
EP1685323B1 (fr) Dispositif pour amortir des coups de belier
EP1312791A2 (fr) Pompe à carburant à haute pression avec accumulateur à membrane aéré
EP3014119B1 (fr) Pompe
DE7925377U1 (de) Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
EP2836696B1 (fr) Injecteur d'un système d'injection de carburant modulaire à rampe commune, doté d'un limiteur de débit
WO2002055868A1 (fr) Unite d'injection par accumulation de pression
DE102015219769A1 (de) Niederdruckdämpfer sowie Kraftstoffhochdruckpumpe
EP1617072A2 (fr) Système d'injection de carburant pour moteur à combustion interne
DE102006054064A1 (de) Kraftstoffinjektor
DE3202405C2 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE102020114435B3 (de) Kraftstoffeinspritzsystem zur Kraftstoff-Wasser-Einspritzung für eine Verbrennungskraftmaschine
DE102007011788A1 (de) Kraftstoffinjektor
DE10348291B4 (de) Einrichtung zur Befestigung eines Kraftstoffinjektors für eine Brennkraftmaschine
DE102013212146A1 (de) Pumpe

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: A1

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

17P Request for examination filed

Effective date: 20010917

17Q First examination report despatched

Effective date: 20040220

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

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

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: 50011562

Country of ref document: DE

Date of ref document: 20051215

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060223

ET Fr: translation 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: 20060810

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

Ref country code: GB

Payment date: 20110824

Year of fee payment: 12

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

Ref country code: IT

Payment date: 20110825

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120818

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 NON-PAYMENT OF DUE FEES

Effective date: 20120818

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

Ref country code: GB

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

Effective date: 20120818

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

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

Ref country code: FR

Payment date: 20150824

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20151022

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50011562

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170428

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 NON-PAYMENT OF DUE FEES

Effective date: 20160831

Ref country code: DE

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

Effective date: 20170301