EP0864043B1 - Kraftstoffhochdruckspeicher - Google Patents
Kraftstoffhochdruckspeicher Download PDFInfo
- Publication number
- EP0864043B1 EP0864043B1 EP97927001A EP97927001A EP0864043B1 EP 0864043 B1 EP0864043 B1 EP 0864043B1 EP 97927001 A EP97927001 A EP 97927001A EP 97927001 A EP97927001 A EP 97927001A EP 0864043 B1 EP0864043 B1 EP 0864043B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- tube
- pressure store
- pressure
- fuel high
- 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.)
- Revoked
Links
- 239000000446 fuel Substances 0.000 title claims description 26
- 238000005242 forging Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims 3
- 210000002445 nipple Anatomy 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000008961 swelling Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 208000035859 Drug effect increased Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
-
- 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
Definitions
- the invention relates to a high-pressure fuel accumulator according to the genus of the claim.
- Such one High-pressure fuel accumulator known from EP 0 507 191 consists of a prefabricated pipe onto which Connection sleeves are pushed on to connect the Fuel injectors or that of the High pressure fuel pump coming high pressure line.
- On such high-pressure fuel storage is proportional expensive to manufacture and also required because of to be attached connecting parts a relatively large Installation space. He must also be very thick-walled to the high pressures at the swelling To withstand the loads to which it is exposed.
- the disadvantage is that thick-walled bodies at high swelling pressure loads tend to tear especially in the area of wall openings and sharp-edged cross-sectional changes.
- the high-pressure fuel reservoir receives the features of the characterizing part of the claim one a high pressure fuel accumulator that through the eccentric position of the connecting holes the swelling Has grown particularly well. Through this eccentric position overlap the individual loads in the Intersection area with the inner wall of the High pressure storage only vectorially, so that there is a Reduction of the burden of about 30% results. So that gets a significant increase in strength and thus the Lifetime of the high pressure accumulator.
- An advantageous embodiment according to claim 2 is that the connecting holes tangent to Open inside wall of the tubular body. With that the above-mentioned effect increased again. Particularly advantageous is to avoid abrupt cross-sectional transitions and thus to further reduce the partial Heavy loads on wall cross sections according to the design Claim 4 according to which the tubular body Forging is formed, also by forging molded connection piece. This has the further advantage that a smaller installation space is required because the Connections because of the one-piece with the tubular Bodies can be made much smaller. In addition the high-pressure accumulator takes less weight on.
- FIG. 1 is a high-pressure fuel accumulator Shown from an elongated, forged there is a tubular body 1, which on its lateral surface 4th to supply 4 fuel injection valves Forging molded connection piece 2 and on the Connection piece 2 diametrically opposite lateral surface integrally formed fasteners 3.
- the Fasteners have the form of eyelets with through holes 4 to be made by drilling such as that Section II-II in Figure 2 can be seen.
- On his End faces 5 is the interior of the high-pressure accumulator forming axial passage recess 10 (Figure 2), here as Through hole formed, tightly closed.
- One of a high-pressure fuel pump, not shown here leading inlet to the interior of the high pressure accumulator is replaced by a between two connections for the Fuel injectors are additional Connection piece 6 formed.
- the tubular high-pressure accumulator On the side of the Fastening elements 3 can be the tubular high-pressure accumulator have yet another connector 7, in e.g. a pressure sensor or a control valve screwed in can be.
- the connecting piece 2 are in the usual way provided with a screw thread 8, in the example high-pressure connection lines sealed via a cone seal be used. These lines are through connecting holes 11 with the interior of the tubular High-pressure accumulator 1, the through hole 10, connected.
- the cross section of this recess is preferably one Circular area, but it can also have another shape, e.g. be an oval.
- the peculiarity of the invention lies here in that the connecting holes eccentrically with the Eccentricity e to the longitudinal axis of the through hole 10 in flow into this.
- the junction preferably takes place tangential. This gives the advantage mentioned at the beginning, that the voltage load on the wall of the high pressure accumulator in the area of intersection of the connecting bores with the longitudinal bore can be reduced in that this construction only the single loads vectorial overlay.
- the connections 2 are used for Connection of the high-pressure fuel accumulator with electrical controlled fuel injection valves.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (5)
- Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen mit einer Kraftstoffhochdruckpumpe, die den Kraftstoffhochdruckspeicher mit Kraftstoff versorgt, aus dem der Kraftstoff elektrisch gesteuerten Einspritzventilen zur Einspritzung in die Brennräume einer selbstzündenden Brennkraftmaschine zugeführt wird, wobei der Kraftstoffhochdruckspeicher aus einem langgestreckten rohrartigen Körper aus Stahl besteht, versehen mit Anschlüssen (2,6,7) für die Kraftstoffzufuhr und die Kraftstoffabfuhr dadurch gekennzeichnet, daß die Anschlüsse als Anschlußstutzen ausgebildet sind, von denen aus je eine Verbindungsbohrung exzentrisch zur Achse des rohrartigen Körpers in diesen einmündet
- Kraftstoffhochdruckspeicher nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindungsbohrungen tangential zur Innenwand des rohrförmigen Körpers einmünden.
- Kraftstoffhochdruckspeicher nach Anspruch 2, dadurch gekennzeichnet, daß der Innenquerschnitt des rohrförmigen Körpers eine Kreisfläche ist.
- Kraftstoffhochdruckspeicher nach einem der vorstehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der rohrartige Körper durch Schmieden geformt ist, mit ebenfalls durch Schmieden angeformten Anschlußstutzen (2,6,7).
- Kraftstoffhochdruckspeicher nach einem der vorstehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, daß an den rohrförmigen Körper Befestigungslaschen angeformt sind.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19640480 | 1996-06-30 | ||
| DE19640480A DE19640480B4 (de) | 1996-09-30 | 1996-09-30 | Kraftstoffhochdruckspeicher |
| PCT/DE1997/001188 WO1998014700A1 (de) | 1996-09-30 | 1997-06-12 | Kraftstoffhochdruckspeicher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0864043A1 EP0864043A1 (de) | 1998-09-16 |
| EP0864043B1 true EP0864043B1 (de) | 2001-11-28 |
Family
ID=7807563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97927001A Revoked EP0864043B1 (de) | 1996-09-30 | 1997-06-12 | Kraftstoffhochdruckspeicher |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6223726B1 (de) |
| EP (1) | EP0864043B1 (de) |
| JP (1) | JP2000501477A (de) |
| KR (1) | KR19990071673A (de) |
| CN (1) | CN1077221C (de) |
| DE (2) | DE19640480B4 (de) |
| WO (1) | WO1998014700A1 (de) |
Families Citing this family (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160079A (ja) * | 1996-10-03 | 1998-06-16 | Usui Internatl Ind Co Ltd | コモンレール |
| JPH10176783A (ja) * | 1996-10-18 | 1998-06-30 | Usui Internatl Ind Co Ltd | コモンレール |
| DE19736191A1 (de) * | 1997-08-20 | 1999-02-25 | Siemens Ag | Druckbehälter mit Anschlußbohrung |
| DE19744094C2 (de) * | 1997-10-06 | 1999-11-18 | Siemens Ag | Einspritzsystem für eine Brennkraftmaschine |
| DE19802476A1 (de) * | 1998-01-23 | 1999-07-29 | Bosch Gmbh Robert | Pumpenanordnung zur Kraftstoffhochdruckversorgung |
| DE19936534A1 (de) | 1999-08-03 | 2001-03-01 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE19936685A1 (de) * | 1999-08-04 | 2001-02-22 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE19937946C1 (de) | 1999-08-11 | 2001-04-19 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
| DE19942855A1 (de) * | 1999-09-08 | 2001-03-22 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE19948341A1 (de) * | 1999-10-07 | 2001-04-19 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE19948255A1 (de) * | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE19960480A1 (de) * | 1999-12-15 | 2001-06-21 | Man Nutzfahrzeuge Ag | Common Rail Einspritzsystem |
| DE10001507A1 (de) | 2000-01-15 | 2001-07-19 | Bosch Gmbh Robert | Verfahren zur Einbringung einer Durchgangsöffnung in einen Kraftstoffhochdruckspeicher und Vorrichtung zur Durchführung des Verfahrens |
| DE10027364A1 (de) | 2000-06-02 | 2001-12-06 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Kantenbearbeitung in einem Kraftstoffhochdruckspeicher |
| JP2002070688A (ja) * | 2000-08-31 | 2002-03-08 | Otics Corp | デリバリパイプ |
| JP3694228B2 (ja) * | 2000-09-18 | 2005-09-14 | 株式会社オティックス | デリバリパイプ |
| DE10056405B4 (de) * | 2000-11-14 | 2005-06-16 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
| DE10128715B4 (de) * | 2001-05-04 | 2005-09-22 | Mtu Friedrichshafen Gmbh | Kraftstoffhochdruckleitung |
| DE10123234A1 (de) * | 2001-05-12 | 2002-11-28 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher mit optmierter Geometrie |
| DE10132246A1 (de) * | 2001-07-04 | 2003-01-23 | Bosch Gmbh Robert | Kraftstoffinjektor mit hochdruckfestem Zulauf |
| JP4035809B2 (ja) * | 2001-07-16 | 2008-01-23 | ボッシュ株式会社 | 燃料噴射弁における高圧送油路交差部の応力低減構造 |
| DE10138756A1 (de) | 2001-08-07 | 2003-02-20 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE10143947A1 (de) * | 2001-09-07 | 2003-04-03 | Bosch Gmbh Robert | Injektorkörper mit tangentialem Druckanschluss |
| DE10146741A1 (de) | 2001-09-22 | 2003-04-17 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
| DE10234909A1 (de) | 2002-07-31 | 2004-02-19 | Robert Bosch Gmbh | Kraftstoffinjektor mit hochdruckfestem Anschlußbereich |
| WO2004046542A1 (en) * | 2002-11-19 | 2004-06-03 | Robert Bosch Gmbh | Conduit intersection for high pressure fluid flow |
| US20050017087A1 (en) * | 2002-11-19 | 2005-01-27 | Brent Brower | Conduit intersection for high pressure fluid flow |
| DE10261737A1 (de) * | 2002-12-30 | 2004-07-08 | Robert Bosch Gmbh | Innendruckbelastetes Bauteil, insbesondere für die Kraftstoffeinspritzung für Brennkraftmaschinen mit einer Kraftstoffhochdruckpumpe |
| DE10304961B3 (de) * | 2003-02-06 | 2004-08-19 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Kraftstoffhochdruckspeichers |
| JP2005140058A (ja) * | 2003-11-07 | 2005-06-02 | Denso Corp | コモンレール |
| US7021291B2 (en) * | 2003-12-24 | 2006-04-04 | Cummins Inc. | Juncture for a high pressure fuel system |
| US20060130007A1 (en) * | 2004-12-01 | 2006-06-15 | International Business Machines Corporation | Computer method and apparatus for automating translation to a modeling language |
| JP2006181577A (ja) | 2004-12-24 | 2006-07-13 | Denso Corp | 高圧配管部品の製造方法および高圧配管部品 |
| US20090095571A1 (en) * | 2007-10-16 | 2009-04-16 | International Engine Intellectual Property Company, Llc | High pressure oil manifold for a diesel engine |
| DE102010014498A1 (de) * | 2010-04-10 | 2011-10-13 | Audi Ag | Kraftstoffverteilrohr für ein Kraftfahrzeug und Verfahren zum Anordnen eines Kraftstoffverteilrohrs |
| US20170260945A1 (en) * | 2014-09-17 | 2017-09-14 | Hitachi Automotive Systems, Ltd. | Fuel Rail |
| KR101715037B1 (ko) * | 2015-04-08 | 2017-04-03 | 주식회사 세림티앤디 | 냉간단조에 의한 차량 엔진 연료레일용 보스 제조 방법 및 제조 장치 |
| CN104863770A (zh) * | 2015-05-28 | 2015-08-26 | 上海臼井发动机零部件有限公司 | 用于缸内直喷汽油机的高压燃油分配管 |
| JP6969129B2 (ja) * | 2017-03-23 | 2021-11-24 | 株式会社デンソー | 配管部品の製造方法 |
| JP2019052616A (ja) * | 2017-09-19 | 2019-04-04 | 臼井国際産業株式会社 | 高圧直噴用のレール |
| IT201800004744A1 (it) * | 2018-04-20 | 2019-10-20 | Distributore di gas per sistema di alimentazione ad iniettori |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475516A (en) * | 1983-05-02 | 1984-10-09 | General Motors Corporation | Fuel rail assembly and clip |
| FR2547868B1 (fr) * | 1983-06-21 | 1985-12-27 | Gerard De Bruyn | Procede de fabrication d'une rampe d'injection d'essence, et rampe obtenue par ce procede |
| US4899712A (en) * | 1983-06-21 | 1990-02-13 | Gerard De Bruyn | Fuel injection rail manufacturing means and process |
| US4844515A (en) * | 1986-02-14 | 1989-07-04 | General Motors Corporation | Fuel connection |
| IT1219300B (it) * | 1988-05-13 | 1990-05-03 | Weber Srl | Procedimento per la costruzione di un collettore per il carburante per un impianto di alimentazione del carburante di un motore a combustione interna |
| IT214868Z2 (it) * | 1988-09-30 | 1990-07-04 | Weber Srl | Semilavorato per realizzare un collettore di alimentazione del carburante per un dispositivo di alimentazione di un motore a combustione interna |
| JPH0752373Y2 (ja) * | 1989-04-15 | 1995-11-29 | 臼井国際産業株式会社 | フユーエルデリバリパイプ |
| DE3914487A1 (de) * | 1989-05-02 | 1990-11-08 | Bosch Gmbh Robert | Kraftstoffverteiler fuer kraftstoffeinspritzanlagen von brennkraftmaschinen |
| US5033435A (en) * | 1989-05-10 | 1991-07-23 | Navistar International Transportation Corp. | Fluid conduit system incorporating self-aligning fitting |
| IT1238509B (it) * | 1989-11-07 | 1993-08-18 | Weber Srl | Collettore di carburante ad elevata pressione atto ad essere inserito tra una pompa di alimentazione del carburante ed almeno una valvola di iniezione del carburante azionata elettromagneticamente |
| DE4110057A1 (de) * | 1991-03-27 | 1992-10-01 | Hoechst Ag | Verfahren zur herstellung eines mehrfarben-pruefbildes und hierfuer geeignetes strahlungsempfindliches aufzeichnungsmaterial |
| DE69200427T2 (de) | 1991-04-04 | 1995-02-16 | Toyota Motor Co Ltd | Kraftstoffeinspritzvorrichtung einer Brennkraftmaschine. |
| DE4115039A1 (de) * | 1991-05-08 | 1992-11-12 | Bosch Gmbh Robert | Brennstoffverteiler |
| DE69124228T2 (de) * | 1991-06-12 | 1997-08-21 | Tiby M Martin | Elektronische Hochdruckeinspritzkraftstoffleitung für Dieselmotoren |
| DE4131537A1 (de) * | 1991-09-21 | 1993-04-01 | Bosch Gmbh Robert | Brennstoffverteiler |
| US5176121A (en) * | 1992-04-06 | 1993-01-05 | Siemens Automotive Limited | Bumpers for protecting an O-ring seal of a fuel injector during the injector's insertion into a socket |
| US5197435A (en) * | 1992-08-13 | 1993-03-30 | Walbro Corporation | Molded fuel injection rail |
| US5408971A (en) * | 1993-08-09 | 1995-04-25 | Brunswick Corporation | Fuel rail construction for an electronic fuel injected engine |
| DE4405432C1 (de) * | 1994-02-21 | 1995-02-02 | Daimler Benz Ag | Hochdruckspeicher als Kraftstoffverteilungsrohr, insbesondere für eine Brennkraftmaschine mit Common-Rail-System |
| DE29521402U1 (de) * | 1995-12-23 | 1997-04-24 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzsystem |
-
1996
- 1996-09-30 DE DE19640480A patent/DE19640480B4/de not_active Expired - Fee Related
-
1997
- 1997-06-12 WO PCT/DE1997/001188 patent/WO1998014700A1/de not_active Ceased
- 1997-06-12 JP JP10516087A patent/JP2000501477A/ja active Pending
- 1997-06-12 DE DE59705542T patent/DE59705542D1/de not_active Revoked
- 1997-06-12 US US09/077,016 patent/US6223726B1/en not_active Expired - Fee Related
- 1997-06-12 KR KR1019980703949A patent/KR19990071673A/ko not_active Ceased
- 1997-06-12 CN CN97191284A patent/CN1077221C/zh not_active Expired - Fee Related
- 1997-06-12 EP EP97927001A patent/EP0864043B1/de not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000501477A (ja) | 2000-02-08 |
| WO1998014700A1 (de) | 1998-04-09 |
| DE59705542D1 (de) | 2002-01-10 |
| DE19640480B4 (de) | 2004-04-22 |
| EP0864043A1 (de) | 1998-09-16 |
| KR19990071673A (ko) | 1999-09-27 |
| CN1205049A (zh) | 1999-01-13 |
| US6223726B1 (en) | 2001-05-01 |
| DE19640480A1 (de) | 1998-04-02 |
| CN1077221C (zh) | 2002-01-02 |
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