EP1131554B1 - Kraftstoffhochdruckspeicher - Google Patents
Kraftstoffhochdruckspeicher Download PDFInfo
- Publication number
- EP1131554B1 EP1131554B1 EP00978947A EP00978947A EP1131554B1 EP 1131554 B1 EP1131554 B1 EP 1131554B1 EP 00978947 A EP00978947 A EP 00978947A EP 00978947 A EP00978947 A EP 00978947A EP 1131554 B1 EP1131554 B1 EP 1131554B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- basic body
- pressure fuel
- fuel accumulator
- inner space
- accumulator according
- 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
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
- F02M55/02—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 storage for a common rail fuel injection system a Internal combustion engine, with a tubular body, its interior with several connection openings in Connection stands.
- a conventional high pressure fuel storage is e.g. in DE 195 48 611 described.
- the known High-pressure fuel storage holds pressures of up to about 1100 bar out.
- JP 07197 873 is a distribution line for fuel known, with two parallel interiors.
- the fuel-carrying interior is of a central axis Distribution line offset in the direction of the connecting piece arranged.
- this interior electrical lines embedded in the distribution line. From the Offset of the fuel-carrying interior and because of the electrical wiring is this distribution line in the field of Weaker connection weakened.
- From DE 197 53 9771 A1 is also a distribution line with two adjoining interiors known. It is each of the interiors in the direction of the long axis of the Connecting piece arranged centrally.
- From DE 197 26 191 Al is a common rail with cylindrical Outer contour and centrally located interior known at the the connecting pieces are arranged off-center, so that their Connection openings open tangentially into the interior.
- This Asymmetric construction is complex in terms of production technology and due to its asymmetry unequal tension conditions, which may adversely affect the compressive strength.
- the object of the invention is the high pressure resistance of known high-pressure fuel storage with simple measures to increase.
- the inventive High-pressure fuel storage especially in different versions, be inexpensive to produce.
- the problem is solved in a high-pressure fuel accumulator for a common rail fuel injection system according to the preamble of claim 1, characterized in that the interior space (3; 23; 33; 43) is arranged on the side of the base body (1; 21; 31; 41) facing away from the connection openings (5, 6; 25; 35; 45).
- the high pressure resistance of the high-pressure fuel storage primarily through the intersections between the connection openings and the basic body is limited. On the transitions between the connection openings and the body act during operation great powers. Due to the relative displacement of the interior in a first level of the body on the connecting piece opposite side of the body is the risk of breakage Transitional area of intersections relieved or stabilized. The high pressure resistance of the High-pressure fuel storage is increased. By rounding can the critical areas between the connection openings and the body still be defused.
- a particular embodiment of the invention is characterized characterized in that the interior of the body so in the Basic body is arranged that the connection openings open tangentially into the interior of the body.
- the Connection openings are usually made for strength reasons, in the Cross-section viewed, centered in arranged the tubular body.
- Another particular embodiment of the invention is characterized in that the basic body in cross section has a substantially elliptical outer contour, and that the connection openings in the longitudinal direction of Main axis of the ellipse are arranged.
- the essentially elliptical outer contour leads under High pressure loading of the interior of the tubular Body to the fact that the interior of the tubular Body expands transverse to the main axis of the ellipse.
- the resulting strains in the body provide that the fracture-prone area of the intersections is relieved. This will increase the high pressure resistance of the fuel high pressure accumulator according to the invention elevated.
- Another particular embodiment of the invention is characterized in that the basic body in cross section a substantially circular outer contour with two Having flats which, viewed in cross-section, on both sides of the longitudinal axis of the respective connection openings are arranged.
- the flattenings lead to a Outer contour, which provides the same benefits as the elliptical outer contour.
- the interior of the tubular The main body expands under high pressure to the longitudinal axis of the respective connection openings.
- the resulting strains in the body provide for the fact that the risk of breakage of the intersections is relieved. This will increase the high pressure resistance of the fuel high pressure accumulator according to the invention elevated.
- Another particular embodiment of the invention is characterized in that at least one end of the Interior of the tubular body Volume memory eccentric to the interior of the Basic body is arranged.
- Another particular embodiment of the invention is characterized in that the volume storage at the end the interior of the tubular body by a Lid is closed.
- the lid can, for example, with Help a screw and / or welded connection to the be attached tubular body.
- Recesses are formed between the Connection openings in the tubular body.
- the recesses provide the Advantage that the weight of the invention High-pressure fuel storage is reduced.
- the Recesses for example, by turning or milling in the outer contour of the tubular body be incorporated.
- Another particular embodiment of the invention is characterized in that between the Connection openings in the tubular body Fasteners are provided.
- the Fasteners are used to attach the Fuel high pressure accumulator according to the invention at the Internal combustion engine. With the fasteners it can e.g. around fastening straps with a Screw thread or a pressed-in Act fixing eye.
- the fasteners can but also welded between the connection openings be.
- Another particular embodiment of the invention is characterized in that the main body of a drawn starting material is formed.
- the drawn Starting material provides the advantage that the inventive high-pressure fuel storage Suitable for modular design and flexible in the screw-on geometry is. Any length of basic body can be fixed without Tools, such as forgings, are made. About that In addition, the manufacturing costs are reduced because the Starting material is readily available and none Special equipment for each variant of the invention High-pressure fuel storage are required.
- the illustrated in Fig. 1 first embodiment of a includes high pressure fuel storage according to the invention a tubular body 1.
- the longitudinal axis of tubular body 1 is denoted by 2.
- tubular body 1 extends an axial Bore 3 parallel to the longitudinal axis 2.
- the center line 4 of the axial bore 3 is the distance Y from the longitudinal axis of the second the tubular body 1 spaced.
- the axial bore 3 is eccentric in the arranged tubular body 1.
- connection holes 5 and 6 In the axial bore 3 of the tubular base body. 1 open two connection holes 5 and 6.
- the Terminal bores 5 and 6 are radially in the tubular Base body 1 arranged and expand outward.
- Between the connection holes 5 and 6 is in the tubular base body 1 a recess. 7 intended.
- the recess 7 serves to reduce the weight of the to the high-pressure fuel storage according to the invention to reduce.
- the axial bore 3 opens at one end of the tubular Base body 1 in a volume memory 8.
- the Volume memory 8 is of a cylindrical Recess-formed in the tubular body 1.
- the cylindrical recess 8 is concentric with the Longitudinal axis 2 of the tubular body 1 is arranged.
- the cylindrical recess 8 eccentric to the axial bore 3 in the tubular Basic body 1 arranged.
- the volume memory 8 is through a lid 9 high-pressure sealed.
- FIG. 2 is a second embodiment of a Fuel high pressure accumulator according to the invention in Cross section shown.
- High-pressure fuel storage includes a rohrfömrigen Main body 21.
- the longitudinal axis 22 of the tubular Base 21 extends perpendicular to the plane of the drawing.
- tubular body 21 is an axial bore 23rd parallel to the longitudinal axis 22 of the tubular base body 21st arranged.
- the center line of the axial bore 23 is with 24 denotes.
- a connection bore 25 opens tangentially in the axial Bore 23 of the tubular body 21.
- the center line 24 of the axial bore 23 is on the one hand by the dimension X from the center line of the radial Connection bore 25 and on the other hand by the dimension Y of the Longitudinal axis 22 of the tubular body 21 spaced.
- the axial bore 23 is therefore eccentric in two planes arranged. Due to the eccentricity Y, as already at explained in Fig. 1 darg Crowen embodiment, the critical area 30 relieved or stabilized. By the Eccentricity X is also achieved that the Connecting bore 25 tangentially into the axial bore 23rd empties.
- FIG. 3 is a third embodiment of a high pressure fuel reservoir according to the invention Cross section shown.
- the illustrated in Fig. 3 High-pressure fuel storage comprises a tubular Base body 31 with an elliptical cross section Outer contour.
- the major axis of the ellipse is perpendicular to the longitudinal axis 32 of the tubular base body 31st arranged.
- the main axis of the ellipse coincides with the Center line of a connection bore 35 together, the radial is arranged in the tubular body 31.
- the radial connection bore 35 opens into an axial bore 33 in the tubular base body 31, whose center line designated 34.
- the center line 34 of the axial Bore 33 is parallel to the longitudinal axis 32 of the tubular body 31.
- Fig. 4 is a fourth embodiment of a Fuel high pressure accumulator according to the invention in Cross section shown.
- a tubular base body 41 whose longitudinal axis is designated 42, is a axial bore 43 recessed.
- the axial bore 43 is at the distance Y from the longitudinal axis 42 of the tubular Main body 41 spaced.
- a radial connection hole 45 opens into the axial bore 43.
- the tubular base 41 has a circular Outer contour.
- dashed lines 46 and 47 are Flattenings indicated that, viewed in cross-section, too both sides of the connection bore 45 are arranged.
- the flattening 46, 47 is the same effect as by the elliptical outer contour of FIG. 3 achieved embodiment shown.
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
der Innenraum (3; 23; 33; 43) auf der den Anschlussöffnungen (5, 6; 25; 35; 45) abgewandten Seite des Grundkörpers (1; 21; 31; 41) angeordnet ist.
Claims (9)
- Kraftstoffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem einer Brennkraftmaschine, mit einem rohrförmigen Grundkörper (1; 21; 31; 41), dessen Innenraum (3; 23; 33; 43) mit mehreren Anschlussöffnungen (5, 6; 25; 35; 45) in Verbindung steht, wobei der Innenraum (3; 23; 33; 43) bezogen auf die Längsachse (2; 22; 32; 42) des Grundkörpers (1; 21; 31; 41) exzentrisch angeordnet ist, dadurch gekennzeichnet, dass der Teil des Innenraums (3; 23; 33; 43), in den die Anschlussöffnungen münden, auf der den Anschlussöffnungen (5, 6; 25; 35; 45) abgewandten Seite des Grundkörpers (1; 21; 31; 41) angeordnet ist.
- Kraftstoffhochdruckspeicher nach Anspruch 1, dadurch gekennzeichnet, dass der Innenraum (23) des Grundkörpers (21) so angeordnet ist, dass die Anschlussöffnungen (25) tangential in den Innenraum (23) des Grundkörpers (21) münden.
- Kraftstoffhochdruckspeicher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Grundkörper (31) im Querschnitt eine im Wesentlichen ellipsenförmige Außenkontur aufweist, und dass die Anschlussöffnungen (35) in Längsrichtung der Hauptachse der Ellipse angeordnet sind.
- Kraftstoffhochdruckspeicher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Grundkörper (41) im Querschnitt eine im Wesentlichen kreisförmige Außenkontur mit zwei Abflachungen (46, 47) aufweist, die, im Querschnitt betrachtet, beidseitig der Längsachse der jeweiligen Anschlussöffnung (45) angeordnet sind.
- Kraftstoffhochdruckspeicher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an mindestens einem Ende des Innenraums (3) des rohrförmigen Grundkörpers (1) ein Volumenspeicher (8) exzentrisch zu dem Innenraum (3) des Grundkörpers (1) angeordnet ist.
- Kraftstoffhochdruckspeicher nach Anspruch 5, dadurch gekennzeichnet, dass der Volumenspeicher (8) am Ende des Innenraums (3) des rohrförmigen Grundkörpers (1) durch einen Deckel (9) verschlossen ist.
- Kraftstoffhochdruckspeicher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen den Anschlussöffnungen (5, 6) in dem rohrförmigen Grundkörper (1) Ausnehmungen (7) ausgebildet sind.
- Kraftstoffhochdruckspeicher nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zwischen den Anschlussöffnungen (5, 6) in dem rohrförmigen Grundkörper Befestigungselemente vorgesehen sind.
- Kraftstoffhochdruckspeicher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass der Grundkörper (1; 21; 31; 41) aus einem gezogenen Ausgangsmaterial gebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19945316A DE19945316A1 (de) | 1999-09-22 | 1999-09-22 | Kraftstoffhochdruckspeicher |
DE19945316 | 1999-09-22 | ||
PCT/DE2000/003244 WO2001021955A1 (de) | 1999-09-22 | 2000-09-19 | Kraftstoffhochdruckspeicher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1131554A1 EP1131554A1 (de) | 2001-09-12 |
EP1131554B1 true EP1131554B1 (de) | 2005-07-06 |
Family
ID=7922838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00978947A Expired - Lifetime EP1131554B1 (de) | 1999-09-22 | 2000-09-19 | Kraftstoffhochdruckspeicher |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1131554B1 (de) |
JP (1) | JP2003510491A (de) |
DE (2) | DE19945316A1 (de) |
WO (1) | WO2001021955A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001295723A (ja) * | 2000-04-13 | 2001-10-26 | Denso Corp | 蓄圧式燃料噴射装置 |
DE10128715B4 (de) * | 2001-05-04 | 2005-09-22 | Mtu Friedrichshafen Gmbh | Kraftstoffhochdruckleitung |
EP1260704B1 (de) * | 2001-05-09 | 2004-08-04 | Siemens Aktiengesellschaft | Speichereinspritzsystem mit erhöhter Bauteilfestigkeit von hochdruckführenden Komponenten |
DE10123234A1 (de) * | 2001-05-12 | 2002-11-28 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher mit optmierter Geometrie |
DE10140058A1 (de) * | 2001-08-16 | 2002-10-24 | Bosch Gmbh Robert | Verfahren zur Herstellung eines Kraftstoffhochdruckspeichers |
DE10143519A1 (de) | 2001-09-05 | 2003-03-27 | Siemens Ag | Kraftstoffhochdruckspeicher für ein Speichereinspritzsystem |
DE10152261A1 (de) * | 2001-10-20 | 2003-04-30 | Bosch Gmbh Robert | Hochdruckspeicher wie Kraftstoffhochdruckspeicher |
US6886537B2 (en) | 2002-07-04 | 2005-05-03 | Denso Corporation | Accumulation type fuel injection system for engine |
DE10239379B4 (de) * | 2002-08-25 | 2005-02-03 | Umformtechnik Bäuerle GmbH | Verfahren zur Bearbeitung eines Werkstücks für einen Kraftstoffhochdruckspeicher und Werkstück zur Anwendung des Verfahrens |
DE10304961B3 (de) * | 2003-02-06 | 2004-08-19 | Robert Bosch Gmbh | Verfahren zur Herstellung eines Kraftstoffhochdruckspeichers |
JP2006218519A (ja) * | 2005-02-10 | 2006-08-24 | Denso Corp | 溶接構造およびコモンレール |
JP2008095629A (ja) * | 2006-10-13 | 2008-04-24 | Bosch Corp | コモンレール |
DE102007034720A1 (de) | 2007-07-23 | 2009-01-29 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher |
ATE548560T1 (de) | 2008-12-23 | 2012-03-15 | Delphi Tech Holding Sarl | Kraftstoffeinspritzsystem |
GB2547898A (en) * | 2016-03-01 | 2017-09-06 | Delphi Int Operations Luxembourg Sarl | Method to manufacture a high pressure fuel reservoir |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2873975B2 (ja) * | 1990-08-31 | 1999-03-24 | 臼井国際産業株式会社 | フユーエルデリバリパイプとその製造方法 |
JP3342194B2 (ja) * | 1993-11-15 | 2002-11-05 | トヨタ自動車株式会社 | 燃料分配管 |
DE4434783C2 (de) * | 1994-09-29 | 1998-04-09 | Daimler Benz Ag | Kraftstoffeinspritzanlage für eine mehrzylindrige Brennkraftmaschine |
JPH09151830A (ja) * | 1995-11-30 | 1997-06-10 | Mikuni Corp | 燃料噴射装置 |
DE29521402U1 (de) * | 1995-12-23 | 1997-04-24 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzsystem |
US5979945A (en) * | 1996-12-07 | 1999-11-09 | Usuikokusai Sangyo Kaisha Ltd. | Common rail |
JP3841370B2 (ja) * | 1996-12-07 | 2006-11-01 | 臼井国際産業株式会社 | コモンレール |
JPH10220320A (ja) * | 1996-12-07 | 1998-08-18 | Usui Internatl Ind Co Ltd | コモンレール |
DE19744762A1 (de) * | 1997-03-18 | 1998-10-01 | Poppe & Potthoff Gmbh & Co | Einspritzeinrichtung für einen Dieselmotor |
DE19729392C2 (de) * | 1997-07-09 | 1999-05-06 | Siemens Ag | Kraftstoffspeicher mit Abdichtung |
DE19736191A1 (de) * | 1997-08-20 | 1999-02-25 | Siemens Ag | Druckbehälter mit Anschlußbohrung |
GB9727421D0 (en) * | 1997-12-30 | 1998-02-25 | Perkins Ltd | Apparatus and method for connecting a fuel pressure tube to a fuel injector of an internal combustion engine |
-
1999
- 1999-09-22 DE DE19945316A patent/DE19945316A1/de not_active Ceased
-
2000
- 2000-09-19 JP JP2001525094A patent/JP2003510491A/ja active Pending
- 2000-09-19 DE DE50010665T patent/DE50010665D1/de not_active Expired - Lifetime
- 2000-09-19 EP EP00978947A patent/EP1131554B1/de not_active Expired - Lifetime
- 2000-09-19 WO PCT/DE2000/003244 patent/WO2001021955A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO2001021955A1 (de) | 2001-03-29 |
DE50010665D1 (de) | 2005-08-11 |
JP2003510491A (ja) | 2003-03-18 |
EP1131554A1 (de) | 2001-09-12 |
DE19945316A1 (de) | 2001-04-05 |
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