EP1133634B1 - Kraftstoffhochdruckspeicher - Google Patents
Kraftstoffhochdruckspeicher Download PDFInfo
- Publication number
- EP1133634B1 EP1133634B1 EP00969195A EP00969195A EP1133634B1 EP 1133634 B1 EP1133634 B1 EP 1133634B1 EP 00969195 A EP00969195 A EP 00969195A EP 00969195 A EP00969195 A EP 00969195A EP 1133634 B1 EP1133634 B1 EP 1133634B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure fuel
- connection
- basic body
- fuel accumulator
- orifice
- 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 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, which is referred to as common rail. From the common rail lead fuel lines to the individual Injectors associated with the cylinders of the internal combustion engine. The injectors are dependent on the operating parameters of Internal combustion engine individually controlled by the engine electronics to To inject fuel into the combustion chamber of the internal combustion engine.
- a conventional high pressure fuel storage is e.g. in DE 295 21 402 U described.
- the well-known high-pressure fuel storage stops Pressures of up to about 1100 bar.
- the object of the invention is the high pressure resistance of known fuel high pressure accumulator with simple measures increase.
- the inventive Fuel high-pressure accumulator be inexpensive to produce.
- the object is in a high-pressure fuel storage for a common rail fuel injection system an internal combustion engine with the Characteristics of claim 1 solved according to the invention.
- the Intersection area between the connection openings and the Basic body interior, especially at high internal pressures a Weak point, which can lead to failure due to cracking. Through the connecting piece of this critical area is defused. This ensures a long service life even at high internal pressures guaranteed.
- the present invention enables using of conventional materials and manufacturing processes one cost-effective production of particularly pressure-resistant High-pressure fuel saving.
- the elongated connecting piece through the interior of the Base body extends through and on the connection opening is attached opposite side of the base body, wherein in the Section of the connecting piece which, in the basic body interior, is arranged, at least one passage opening is provided, need in the area of the connection opening no fasteners for be provided the connection piece.
- the passage opening allows high pressure fuel from the Connecting piece in the Body interior can get.
- Another particular embodiment of the invention is characterized characterized in that the spigot on the outward facing Side of the connection opening is supported and in the assembled Condition is loaded on train. This leads to a tension of the Basic body in the intersection between the connection openings and the body interior. The resulting from the tension Forces act on the hydraulic forces in the body interior opposite. This ensures crack formation at high internal pressures prevented.
- the high-pressure fuel storage according to the invention can with be operated at a higher rail pressure than conventional High-pressure fuel storage.
- Another particular embodiment of the invention is characterized characterized in that at the end facing the end of the Connecting piece a cone is formed, which with a complementary surface on the main body in the area of the associated Connection opening cooperates. About the cone is the traction of transferred to the connecting piece on the body.
- the illustrated High-pressure fuel storage comprises a tubular Basic body 1. On the tubular base body 1 is a also tubular connector 2 is formed. Of the inventive high-pressure fuel storage has several tubular fittings on. The fittings are used for connecting high-pressure fuel lines to lead the individual injectors. In addition, serve the Connecting pieces, for example, for receiving pressure sensors. Instead of of the tubular body 1 may also be a (not shown) spherical base body can be used.
- the outwardly facing end face 3 of the tubular Connecting piece 2 is funnel-shaped.
- the funnel-shaped end face 3 acts with a cone. 4 together, which is formed on a collar 5.
- the covenant 5 belongs to a tubular connecting piece 6, which is through the tubular connector 2 in the Interior of the tubular body 1 extends.
- a Passage opening 7 in the tubular connecting piece 6 allows the passage of fuel.
- the end remote from the tubular connector 2 end of the connecting piece 6 is in a bore 8 in the attached tubular body 1.
- the bore 8 is diametrically opposite to the tubular one Connector 2 arranged.
- the bore 8 with an internal thread 9 equipped with a External thread 10 cooperates at the end of the Connecting piece 6 is formed.
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 (4)
- Kraftstoffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem einer Brennkraftmaschine, mit einem Grundkörper (1), dessen Innenraum mit mehreren Anschlussöffnungen (2) in Verbindung steht, wobei sich jeweils ein länglicher Anschlussstutzen (6) durch die zugehörige Anschlussöffnung (2) durch den Innenraum des Grundkörpers (1) hindurch erstreckt und auf der der Anschlussöffnung (2) gegenüberliegenden Seite des Grundkörpers (1) befestigt ist, wobei in dem Abschnitt des Anschlussstutzens (6), der in dem Innenraum des Grundkörpers (1) angeordnet ist, mindestens eine Durchtrittsöffnung (7) vorgesehen ist, dadurch gekennzeichnet, dass an dem der Anschlussöffnung (2) gegenüberliegenden Ende des Anschlussstutzens (6) ein Außengewinde (10) ausgebildet ist, das mit einem Innengewinde (9) zusammenwirkt, das in einer entsprechenden Bohrung (8) in dem Grundkörper (1) vorgesehen ist.
- Kraftstoffhochdruckspeicher nach Anspruch 1, dadurch gekennzeichnet, dass der Anschlussstutzen (6) an der nach außen gewandten Seite der Anschlussöffnung (2) abgestützt ist und im zusammengebauten Zustand auf Zug belastet ist.
- Kraftstoffhochdruckspeicher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an dem nach außen gewandten Ende des Anschlussstutzens (6) ein Konus (4) ausgebildet ist, der mit einer komplementären Fläche (3) an dem Grundkörper (1) im Bereich der zugehörigen Anschlussöffnung (2) zusammenwirkt.
- Kraftstoffhochdruckspeicher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bohrung (8) eine Sacklochbohrung ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19946611 | 1999-09-29 | ||
DE19946611A DE19946611A1 (de) | 1999-09-29 | 1999-09-29 | Kraftstoffhochdruckspeicher |
PCT/DE2000/002839 WO2001023749A1 (de) | 1999-09-29 | 2000-08-19 | Kraftstoffhochdruckspeicher |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1133634A1 EP1133634A1 (de) | 2001-09-19 |
EP1133634B1 true EP1133634B1 (de) | 2005-05-04 |
Family
ID=7923685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00969195A Expired - Lifetime EP1133634B1 (de) | 1999-09-29 | 2000-08-19 | Kraftstoffhochdruckspeicher |
Country Status (5)
Country | Link |
---|---|
US (1) | US6793252B1 (de) |
EP (1) | EP1133634B1 (de) |
JP (1) | JP2003510512A (de) |
DE (2) | DE19946611A1 (de) |
WO (1) | WO2001023749A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6929288B2 (en) * | 2001-12-20 | 2005-08-16 | Usui Kokusai Sangyo Kaisha Limited | Connecting structure of branch connector in fuel pressure accumulating container |
JP2004092551A (ja) * | 2002-09-02 | 2004-03-25 | Usui Kokusai Sangyo Kaisha Ltd | ディーゼルエンジン用コモンレール |
DE10309311B4 (de) | 2003-03-04 | 2005-01-05 | Siemens Ag | Kraftstoffhockdruckspeicher |
DE102004036871A1 (de) * | 2004-07-29 | 2006-02-16 | Deutz Ag | Behälter |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190500810A (en) * | 1905-01-16 | 1906-01-04 | G And J Weir Ltd | Improvements in and relating to Couplings and Fastenings for Steam Heating Tubes and the like. |
US1767028A (en) * | 1928-08-21 | 1930-06-24 | George A Williams | Water-sprinkling device |
US2409262A (en) * | 1943-10-18 | 1946-10-15 | Autopulse Corp | Manifold assembly |
US2605140A (en) * | 1950-03-01 | 1952-07-29 | Dearborn Motors Corp | Nozzle support for spray booms |
US2674785A (en) * | 1951-02-01 | 1954-04-13 | Weatherhead Co | Method of making fittings |
US2846241A (en) * | 1953-08-24 | 1958-08-05 | Gen Motors Corp | Pipe end to pipe side joint |
US3219366A (en) * | 1962-02-20 | 1965-11-23 | Imp Eastman Corp | Reinforced fluid control fitting |
US4518033A (en) * | 1979-02-02 | 1985-05-21 | Josef Gartner & Co. | Device for controlling the temperature of rooms in a building |
US4711259A (en) * | 1984-12-05 | 1987-12-08 | Light Industrial Design Company | Milk tank cleaning apparatus and method |
JP2803383B2 (ja) * | 1991-04-08 | 1998-09-24 | トヨタ自動車株式会社 | 高圧流体用継手 |
JPH08193554A (ja) * | 1995-01-17 | 1996-07-30 | Keihin Seiki Mfg Co Ltd | 内燃機関における燃料供給装置 |
JP3371620B2 (ja) * | 1995-05-29 | 2003-01-27 | いすゞ自動車株式会社 | コモンレール式燃料噴射装置 |
DE29521402U1 (de) * | 1995-12-23 | 1997-04-24 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzsystem |
JPH09303232A (ja) * | 1996-05-09 | 1997-11-25 | Toyota Motor Corp | コモンレール式ディーゼルエンジンの噴射管接続構造 |
GB9616678D0 (en) * | 1996-08-08 | 1996-09-25 | Eaton Williams Group Ltd | Steam outlet assembly |
US5979945A (en) * | 1996-12-07 | 1999-11-09 | Usuikokusai Sangyo Kaisha Ltd. | Common rail |
DE19744762A1 (de) * | 1997-03-18 | 1998-10-01 | Poppe & Potthoff Gmbh & Co | Einspritzeinrichtung für einen Dieselmotor |
EP0915252A3 (de) * | 1997-11-05 | 2000-03-15 | SIG Schweizerische Industrie-Gesellschaft | Common-Rail Einspritzsystem |
US6082397A (en) * | 1998-09-18 | 2000-07-04 | Harper-Wyman Company | Gas manifold connector and gas distribution manifold assembly for gas stove |
GB2358898B (en) * | 1999-12-09 | 2002-04-24 | Usui Kokusai Sangyo Kk | Diesel engine fuel injection pipe |
-
1999
- 1999-09-29 DE DE19946611A patent/DE19946611A1/de not_active Ceased
-
2000
- 2000-08-19 DE DE50010229T patent/DE50010229D1/de not_active Expired - Fee Related
- 2000-08-19 WO PCT/DE2000/002839 patent/WO2001023749A1/de active IP Right Grant
- 2000-08-19 EP EP00969195A patent/EP1133634B1/de not_active Expired - Lifetime
- 2000-08-19 US US09/856,638 patent/US6793252B1/en not_active Expired - Fee Related
- 2000-08-19 JP JP2001527107A patent/JP2003510512A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2003510512A (ja) | 2003-03-18 |
DE50010229D1 (de) | 2005-06-09 |
WO2001023749A1 (de) | 2001-04-05 |
US6793252B1 (en) | 2004-09-21 |
EP1133634A1 (de) | 2001-09-19 |
DE19946611A1 (de) | 2001-04-12 |
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