EP1129285A1 - Accumulateur de carburant haute pression - Google Patents

Accumulateur de carburant haute pression

Info

Publication number
EP1129285A1
EP1129285A1 EP00969187A EP00969187A EP1129285A1 EP 1129285 A1 EP1129285 A1 EP 1129285A1 EP 00969187 A EP00969187 A EP 00969187A EP 00969187 A EP00969187 A EP 00969187A EP 1129285 A1 EP1129285 A1 EP 1129285A1
Authority
EP
European Patent Office
Prior art keywords
pressure fuel
fuel accumulator
accumulator according
vibration damping
openings
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.)
Granted
Application number
EP00969187A
Other languages
German (de)
English (en)
Other versions
EP1129285B1 (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

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 accumulator for a common rail fuel injection system of an internal combustion engine, having a plurality of connection openings, in particular connection openings for the supply and discharge of fuel, and connection openings for sensors and valves, etc.
  • a high-pressure pump conveys the fuel to be injected from a tank into the central high-pressure fuel reservoir, which is referred to as the common rail.
  • High-pressure lines lead from the rail to the individual injectors, which are assigned to the engine cylinders. The injectors are depending on the operating parameters of the
  • Internal combustion engine individually controlled by the engine electronics in order to inject fuel into the combustion chamber of the internal combustion engine.
  • the pressure generation and the injection are decoupled from one another by the high-pressure fuel reservoir.
  • a conventional high-pressure fuel accumulator is e.g. described in DE 196 40 480.
  • the known high-pressure fuel accumulator consists of an elongated, tubular body with several
  • the pressure vibrations mean that some injectors inject too little as a result of the formation of a standing wave.
  • pressure waves running back and forth in the rail can cause the injectors to be too low alternately or stochastically
  • the object of the invention is a
  • High-pressure fuel storage should still be simple and inexpensive to manufacture.
  • connection openings for the supply and discharge of fuel and connection openings for sensors and valves etc.
  • Vibration damping device is equipped.
  • the volume of the high-pressure fuel accumulator can be significantly reduced by the vibration damping device. This dampens the harmonics that occur during operation, which increases the high-pressure strength of the high-pressure fuel accumulator.
  • a special embodiment of the invention is characterized in that the vibration damping device is formed by interference geometries. The propagation of pressure waves in the high-pressure fuel reservoir is at least impeded by the interference geometries.
  • Interference geometries can be designed differently. It is possible that the interference geometries are formed by separate parts. However, it is also possible for the interference geometries to be formed in one piece with the high-pressure fuel accumulator.
  • High-pressure fuel accumulator comprises a housing with an interior in which the interference geometries are accommodated.
  • the interior can e.g. be formed by a hole.
  • the bore can be designed as a through bore or as a blind hole.
  • the open end (s) of the bore can be closed in a high-pressure-tight manner after the interference geometry has been inserted with corresponding closure elements.
  • the interior can be formed by a spherical space. In the case of a spherical interior, the insertion of the interference geometries is made possible by a two-part housing.
  • a further special embodiment of the invention is characterized in that the interference geometries are formed by at least one coiled sheet, an axis with open transverse walls arranged thereon, a wire winding, at least one sheet metal strip with openings and / or a tube with openings.
  • High-pressure fuel storage or the socket can be done.
  • the flow favoring device can e.g. a rounding or a reduction.
  • the other side of the through hole can be formed with sharp edges. It is thereby achieved that the evasive movement of the piston occurs against the spring in the event of a pressure surge occurring in the high-pressure fuel accumulator.
  • Figure 1 shows a first embodiment of a high-pressure fuel accumulator according to the invention in longitudinal section;
  • Figures 2 to 6 different variants of the vibration damping device used in Figure 1 in a separate representation;
  • Figure 7 shows a second embodiment of a high-pressure fuel accumulator according to the invention in longitudinal section.
  • FIG. 1 shows a high-pressure fuel accumulator which comprises an elongate, tubular housing 1.
  • a through hole 2 forms a storage space for the fuel in the tubular housing 1.
  • Through hole 2 is closed at both ends by means of sealing plugs 3 and 4 in a pressure-tight manner.
  • the housing 1 is equipped with a series of connections 5-10.
  • the connections 5 - 10 serve to connect the high-pressure fuel accumulator with the
  • High pressure pump and the individual injectors are used to fasten the high-pressure fuel reservoir to the internal combustion engine.
  • fastening elements 11-13 are attached to the housing 1, which are used to fasten the high-pressure fuel reservoir to the internal combustion engine.
  • Vibration damping device 14 clamped between the two locking screws 3 and 4.
  • the vibration damping device 14 can only be clamped on one side or supported radially.
  • FIGS. 2-6 Different variants of the vibration damping device 14 are shown in FIGS. 2-6.
  • FIG. 2 shows the vibration damping device 14 from FIG. 1 in isolation.
  • the vibration damping device 14 is a coiled sheet.
  • Vibration damping device can also comprise an axis 16 on which transverse walls 17 are arranged at an even spacing. In order to allow fuel to pass through, several openings 18 are provided in the transverse walls 17.
  • FIG. 4 shows a vibration damping device which is formed by a wire winding 20.
  • the wire coil 20 comprises a plurality of wires which are intertwined irregularly. Sufficient clearance is provided between the individual wires to allow fuel to pass through.
  • the vibration damping device shown in FIG. 5 is formed by a sheet metal strip 22 which is provided with a series of openings, of which only two are given the reference numerals 23 and 24 in FIG. 5, for example.
  • the openings 23 and 24 are formed by folding out pieces of sheet metal 25 and 26.
  • the folded-out sheet metal pieces 25 and 26 form guide vanes for the fuel located in the high-pressure fuel accumulator.
  • the vibration damping device shown in FIG. 6 is formed by a tube 30 made of sheet metal.
  • a plurality of bores 31-33 are arranged in the tube 30.
  • a plurality of tabs 34-36 from the

Landscapes

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

Abstract

L'invention concerne un accumulateur de carburant haute pression destiné à un système d'injection de carburant à rampe commune de moteur à combustion interne, qui comprend plusieurs ouvertures de raccordement (5 - 10), en particulier d'ouvertures de raccordement pour l'amenée et l'évacuation de carburant, ainsi que des ouvertures de raccordement pour des capteurs, des soupapes etc.. Pour que la résistance de l'accumulateur de carburant haute pression soit augmentée, on a équipé cet accumulateur d'un dispositif amortisseur de vibrations (14).
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 true EP1129285A1 (fr) 2001-09-05
EP1129285B1 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)

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US6901913B1 (en) * 2001-07-16 2005-06-07 Usui Kokusai Sangyo Kaisha Ltd. Fuel pressure pulsation suppressing system
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
CN114017225A (zh) * 2021-12-03 2022-02-08 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

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Also Published As

Publication number Publication date
EP1129285B1 (fr) 2005-11-09
DE19942855A1 (de) 2001-03-22
WO2001018385A1 (fr) 2001-03-15
CZ20011575A3 (cs) 2002-03-13
DE50011562D1 (de) 2005-12-15
CZ296982B6 (cs) 2006-08-16
US6615800B1 (en) 2003-09-09
JP2003508682A (ja) 2003-03-04

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