WO2001025615A1 - Kraftstoffhochdruckspeicher - Google Patents
Kraftstoffhochdruckspeicher Download PDFInfo
- Publication number
- WO2001025615A1 WO2001025615A1 PCT/DE2000/003245 DE0003245W WO0125615A1 WO 2001025615 A1 WO2001025615 A1 WO 2001025615A1 DE 0003245 W DE0003245 W DE 0003245W WO 0125615 A1 WO0125615 A1 WO 0125615A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure fuel
- fuel accumulator
- substantially circular
- cylindrical recesses
- connections
- Prior art date
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
- F02M55/02—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 for a common rail fuel injection system
- High-pressure pump possibly with the help of a pre-feed pump, the fuel to be injected from a tank into the central high-pressure fuel reservoir, which is referred to as the common rail.
- Fuel lines lead from the rail to the individual injectors, which are assigned to the cylinders of the internal combustion engine. The injectors are dependent on the
- Operating parameters of the internal combustion engine are individually controlled by the engine electronics in order to inject fuel into the combustion chamber of the internal combustion engine.
- High-pressure fuel accumulators separate the pressure generation and the injection from each other.
- a conventional high-pressure fuel accumulator is e.g. described in DE 195 48 611.
- High-pressure fuel accumulator withstands pressures of up to around 1100 bar.
- the object of the invention is to increase the high-pressure strength of the known high-pressure fuel reservoir with simple measures.
- the high-pressure fuel reservoir according to the invention should be inexpensive to manufacture.
- a high-pressure fuel accumulator for a common rail fuel injection system of an internal combustion engine with a tubular base body, the interior of which is connected to a plurality of connections, in that the interior is formed by at least two essentially circular-cylindrical recesses which are connected to one another stand and the longitudinal axes of which are arranged parallel to one another, and in that the connections extend only from the lateral surface of one of the substantially circular-cylindrical recesses.
- the high-pressure strength of the high-pressure fuel reservoir is primarily due to the intersections between the connection openings and the
- Basic body interior is limited. In operation, large forces act on the transitions between the connection openings and the base body. According to the present invention, the functions of storing and distributing the interior of the base body are distributed over the two recesses. This makes it possible for the
- connections can also be provided on the end faces of the circular-cylindrical recesses, since the intersection problem does not occur there.
- a particular embodiment of the invention is characterized in that the two essentially circular cylindrical recesses are connected to each other by a connecting channel. The separation of the two circular cylindrical recesses from one another ensures that pressure surges do not pass from one circular cylindrical recess to the other.
- Another special embodiment of the invention is characterized in that the two substantially circular-cylindrical recesses overlap in cross section.
- the overlap increases the available storage space without the formation of sharp edges, which are critical with regard to the high pressure resistance.
- a further special embodiment of the invention is characterized in that the two substantially circular-cylindrical recesses have the same diameter, and in that the connections are arranged only in the longitudinal direction of the basic body interior cross section. The cross-section of the deformation resulting from the high pressure inside the base body during operation is greatest perpendicular to the connections and thus occurs in an area that is not so heavily loaded.
- Another special embodiment of the invention is characterized in that the two substantially circular-cylindrical recesses have different diameters, and in that the connections only start from the lateral surface of the essentially circular-cylindrical recess with the smaller diameter. As a result, the transition between the interior of the tubular base body and the connections is defused and the high-pressure strength of the high-pressure fuel reservoir according to the invention is improved.
- a further special embodiment of the invention is characterized in that the distance between the longitudinal axes of the two substantially circular cylindrical recesses is greater than or equal to the radius of the substantially circular cylindrical recess with the larger diameter. This ensures that
- Fuel high-pressure accumulator is enlarged.
- Another special embodiment is characterized in that the transitions between the two substantially circular-cylindrical recesses are rounded in cross section. The additional rounding leads to a further increase in the high-pressure strength of the high-pressure fuel reservoir according to the invention.
- Figure 1 shows the representation of an inventive
- FIGS. 2 to 8 show different embodiments of the high-pressure fuel accumulator according to the invention in cross section along the line II-II in FIG. 1.
- the high-pressure fuel reservoir shown in longitudinal section in FIG. 1 comprises a tubular one
- Base body 1 There are four on the tubular base body 1 Connection pieces 2, 3, 4 and 5 formed. The connecting pieces 2, 3, 4 and 5 are used to connect high-pressure fuel lines. The
- High-pressure fuel lines establish a connection between the interior of the tubular base body 1 and a (not shown) high-pressure fuel pump or with the (not shown) injectors of the internal combustion engine to be supplied.
- first longitudinal bore 11 is formed by a first longitudinal bore 11 and a second longitudinal bore 12.
- the longitudinal bores 11 and 12 are arranged parallel to one another.
- the first longitudinal bore 11 has a diameter d 2 that is significantly larger than that
- the distance between the parallel center lines of the two longitudinal bores 11 and 12 is greater than the radius but smaller than the diameter d of the first longitudinal bore 11.
- connection bore 13 is arranged radially in the base body 1 and opens into the second longitudinal bore 12.
- the transition 14 between the first longitudinal bore 11 and the second longitudinal bore 12 is rounded.
- the first longitudinal bore 11 in the tubular base body 1 fulfills the function of storing fuel during operation of the high-pressure fuel accumulator according to the invention.
- the second longitudinal bore 12 in the tubular base body 1 fulfills the function of distributing the fuel during operation of the high-pressure fuel accumulator according to the invention.
- High-pressure fuel accumulator like the embodiment described above, has a tubular base body 1 with two parallel longitudinal bores 11 and 12.
- the second longitudinal bore 12 has a smaller diameter d 2 than the first longitudinal bore 11 (d-.
- the transition 14 between the two longitudinal bores 11 and 12 is rounded.
- connection bore 13 opens tangentially into the first and the second
- connection bore 13 runs in a different direction than the connection bore 13 in the embodiment shown in FIG. 3.
- connection bores 13 are arranged offset by 90 ° to one another.
- the third longitudinal bore 15 has a diameter d 3 .
- the diameter d 3 is smaller than the diameter d 2 , which in turn is smaller than the diameter d x .
- the connection bore 13 opens into the longitudinal bore 15 with the diameter d 3 .
- connection bore 13 does not open tangentially into the second connection bore 12, as in the embodiment shown in FIG. 2, but, as can be seen in FIG. 6, tangentially into the first connection bore 11.
- the bores are arranged such that the connection bore 13 is eccentric and comes out smoothly from the first longitudinal bore 11.
- connection bore 13 opens tangentially into the longitudinal bore 12.
- the transition area between the two longitudinal bores 11 and 12 is flat.
- connection bore 13 Under high pressure, the interior of the base body 1 formed by the two longitudinal bores deforms most perpendicular to the connection bore 13. The area of the eccentric connection bore 13 is not overloaded as a result.
- first longitudinal bore 11 and the second longitudinal bore 12 are formed separately in the tubular base body 1.
- the longitudinal bores 11 and 12 are connected to one another by a connecting bore with the diameter d 4 .
- the connecting bore opens tangentially into both longitudinal bores 11 and 12.
- the connecting bore 13 has a diameter d 5 which is larger than the diameter d 4 of the connecting bore.
- the connection bore 13 opens tangentially into the second longitudinal bore 12.
- the connection bore 13 extends in the same direction as the connecting bore between the two longitudinal bores 11 and 12.
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
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/857,630 US6637407B1 (en) | 1999-10-07 | 2000-09-19 | Common rail |
DE50012917T DE50012917D1 (de) | 1999-10-07 | 2000-09-19 | Kraftstoffhochdruckspeicher |
JP2001528323A JP4445690B2 (ja) | 1999-10-07 | 2000-09-19 | 燃料高圧アキュムレータ |
EP00967579A EP1137878B1 (de) | 1999-10-07 | 2000-09-19 | Kraftstoffhochdruckspeicher |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19948339.6 | 1999-10-07 | ||
DE19948339A DE19948339C1 (de) | 1999-10-07 | 1999-10-07 | Kraftstoffhochdruckspeicher |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001025615A1 true WO2001025615A1 (de) | 2001-04-12 |
Family
ID=7924831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/003245 WO2001025615A1 (de) | 1999-10-07 | 2000-09-19 | Kraftstoffhochdruckspeicher |
Country Status (6)
Country | Link |
---|---|
US (1) | US6637407B1 (de) |
EP (1) | EP1137878B1 (de) |
JP (1) | JP4445690B2 (de) |
CZ (1) | CZ295449B6 (de) |
DE (2) | DE19948339C1 (de) |
WO (1) | WO2001025615A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1413744A1 (de) * | 2002-10-23 | 2004-04-28 | Wärtsilä Schweiz AG | Druckspeicher für ein Common Rail System |
US6851412B2 (en) | 2002-04-08 | 2005-02-08 | Wartsila Finland Oy | Fuel injection system for a piston engine |
US7021291B2 (en) * | 2003-12-24 | 2006-04-04 | Cummins Inc. | Juncture for a high pressure fuel system |
US9173394B2 (en) | 2007-09-26 | 2015-11-03 | Bayer Intellectual Property Gmbh | Active agent combinations having insecticidal and acaricidal properties |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10128715B4 (de) * | 2001-05-04 | 2005-09-22 | Mtu Friedrichshafen Gmbh | Kraftstoffhochdruckleitung |
DE10146741A1 (de) * | 2001-09-22 | 2003-04-17 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
DE10152261A1 (de) * | 2001-10-20 | 2003-04-30 | Bosch Gmbh Robert | Hochdruckspeicher wie Kraftstoffhochdruckspeicher |
DE10248800A1 (de) * | 2002-10-19 | 2004-04-29 | Robert Bosch Gmbh | Innendruckbelastetes Bauteil, sowie Verfahren zur Herstellung eines innendruckbelasteten Bauteils mit nicht zylindrischem Querschnitt |
DE10305078A1 (de) * | 2003-02-07 | 2004-04-22 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher |
DE10329052A1 (de) | 2003-06-27 | 2005-01-13 | Robert Bosch Gmbh | Verbindung für Hochdruckräume von Kraftstoffinjektoren |
JP2005140058A (ja) * | 2003-11-07 | 2005-06-02 | Denso Corp | コモンレール |
FI120844B (fi) * | 2007-05-31 | 2010-03-31 | Waertsilae Finland Oy | Polttoaineen syöttöjärjestelmän polttoainevarasto |
ATE548560T1 (de) | 2008-12-23 | 2012-03-15 | Delphi Tech Holding Sarl | Kraftstoffeinspritzsystem |
JP2011069255A (ja) * | 2009-09-24 | 2011-04-07 | Daihatsu Motor Co Ltd | 内燃機関の燃料デリバリパイプ |
JP2011069254A (ja) * | 2009-09-24 | 2011-04-07 | Daihatsu Motor Co Ltd | 内燃機関の燃料デリバリパイプ |
EP2511517B1 (de) * | 2011-04-15 | 2015-04-01 | Wärtsilä Schweiz AG | Hochdruckflüssigkeitsschiene |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29521402U1 (de) | 1995-12-23 | 1997-04-24 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzsystem |
JPH10169527A (ja) * | 1996-12-07 | 1998-06-23 | Usui Internatl Ind Co Ltd | コモンレール |
DE10006894A1 (de) * | 1999-02-18 | 2000-08-24 | Usui Kokusai Sangyo Kk | Kraftstoffzufuhrleitungsanordnung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19728111A1 (de) * | 1997-07-02 | 1999-01-07 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem |
DE19945786C1 (de) * | 1999-09-24 | 2000-11-16 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
DE19953577A1 (de) * | 1999-11-08 | 2001-05-23 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
-
1999
- 1999-10-07 DE DE19948339A patent/DE19948339C1/de not_active Expired - Fee Related
-
2000
- 2000-09-19 EP EP00967579A patent/EP1137878B1/de not_active Expired - Lifetime
- 2000-09-19 WO PCT/DE2000/003245 patent/WO2001025615A1/de active IP Right Grant
- 2000-09-19 US US09/857,630 patent/US6637407B1/en not_active Expired - Fee Related
- 2000-09-19 JP JP2001528323A patent/JP4445690B2/ja not_active Expired - Fee Related
- 2000-09-19 DE DE50012917T patent/DE50012917D1/de not_active Expired - Lifetime
- 2000-09-19 CZ CZ20011995A patent/CZ295449B6/cs not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29521402U1 (de) | 1995-12-23 | 1997-04-24 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzsystem |
JPH10169527A (ja) * | 1996-12-07 | 1998-06-23 | Usui Internatl Ind Co Ltd | コモンレール |
DE10006894A1 (de) * | 1999-02-18 | 2000-08-24 | Usui Kokusai Sangyo Kk | Kraftstoffzufuhrleitungsanordnung |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6851412B2 (en) | 2002-04-08 | 2005-02-08 | Wartsila Finland Oy | Fuel injection system for a piston engine |
EP1413744A1 (de) * | 2002-10-23 | 2004-04-28 | Wärtsilä Schweiz AG | Druckspeicher für ein Common Rail System |
KR101024863B1 (ko) * | 2002-10-23 | 2011-03-31 | 베르트질레 슈바이츠 악티엔게젤샤프트 | 커먼 레일 시스템용 어큐뮬레이터 |
US7021291B2 (en) * | 2003-12-24 | 2006-04-04 | Cummins Inc. | Juncture for a high pressure fuel system |
US7278400B2 (en) | 2003-12-24 | 2007-10-09 | Cummins Inc. | Juncture for a high pressure fuel system |
US9173394B2 (en) | 2007-09-26 | 2015-11-03 | Bayer Intellectual Property Gmbh | Active agent combinations having insecticidal and acaricidal properties |
Also Published As
Publication number | Publication date |
---|---|
DE19948339C1 (de) | 2000-12-14 |
DE50012917D1 (de) | 2006-07-20 |
CZ20011995A3 (cs) | 2002-05-15 |
US6637407B1 (en) | 2003-10-28 |
CZ295449B6 (cs) | 2005-08-17 |
JP2003511605A (ja) | 2003-03-25 |
JP4445690B2 (ja) | 2010-04-07 |
EP1137878B1 (de) | 2006-06-07 |
EP1137878A1 (de) | 2001-10-04 |
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