EP1129285A1 - Kraftstoffhochdruckspeicher - Google Patents
KraftstoffhochdruckspeicherInfo
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 61
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
Description
Claims
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 (de) | 1999-09-08 | 2000-08-18 | Kraftstoffhochdruckspeicher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1129285A1 true EP1129285A1 (de) | 2001-09-05 |
EP1129285B1 EP1129285B1 (de) | 2005-11-09 |
Family
ID=7921199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00969187A Expired - Lifetime EP1129285B1 (de) | 1999-09-08 | 2000-08-18 | Kraftstoffhochdruckspeicher |
Country Status (6)
Country | Link |
---|---|
US (1) | US6615800B1 (de) |
EP (1) | EP1129285B1 (de) |
JP (1) | JP2003508682A (de) |
CZ (1) | CZ296982B6 (de) |
DE (2) | DE19942855A1 (de) |
WO (1) | WO2001018385A1 (de) |
Families Citing this family (21)
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 (de) | 2008-04-17 | 2009-10-21 | Continental Automotive GmbH | Kraftstoffleiste eines Verbrennungsmotors |
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)
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 |
-
1999
- 1999-09-08 DE DE19942855A patent/DE19942855A1/de not_active Ceased
-
2000
- 2000-08-18 JP JP2001521892A patent/JP2003508682A/ja active Pending
- 2000-08-18 CZ CZ20011575A patent/CZ296982B6/cs not_active IP Right Cessation
- 2000-08-18 EP EP00969187A patent/EP1129285B1/de not_active Expired - Lifetime
- 2000-08-18 WO PCT/DE2000/002820 patent/WO2001018385A1/de active IP Right Grant
- 2000-08-18 US US09/831,160 patent/US6615800B1/en not_active Expired - Fee Related
- 2000-08-18 DE DE50011562T patent/DE50011562D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0118385A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19942855A1 (de) | 2001-03-22 |
US6615800B1 (en) | 2003-09-09 |
EP1129285B1 (de) | 2005-11-09 |
CZ296982B6 (cs) | 2006-08-16 |
WO2001018385A1 (de) | 2001-03-15 |
DE50011562D1 (de) | 2005-12-15 |
JP2003508682A (ja) | 2003-03-04 |
CZ20011575A3 (cs) | 2002-03-13 |
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