EP2147208A1 - Verschneidungsbereich zwischen einer hochdruckkammer und einem hochdruckkanal - Google Patents
Verschneidungsbereich zwischen einer hochdruckkammer und einem hochdruckkanalInfo
- Publication number
- EP2147208A1 EP2147208A1 EP08735899A EP08735899A EP2147208A1 EP 2147208 A1 EP2147208 A1 EP 2147208A1 EP 08735899 A EP08735899 A EP 08735899A EP 08735899 A EP08735899 A EP 08735899A EP 2147208 A1 EP2147208 A1 EP 2147208A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- region
- pressure
- intersection
- pressure chamber
- section
- 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
- 230000007704 transition Effects 0.000 claims description 7
- 239000000446 fuel Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 231100000817 safety factor Toxicity 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
-
- 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
- F02M55/008—Arrangement of fuel passages inside of 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
Definitions
- the invention relates to an intersection region between a high-pressure chamber and a high-pressure channel.
- the object of the invention is to increase the high pressure resistance in the area of intersection between a high pressure chamber and a high pressure passage.
- intersection region comprises at least one planar region or an area which is significantly less curved than the remaining intersection region.
- the flat area can also be made only approximately flat.
- the high pressure chamber and the high pressure channel are also called functional rooms.
- the planar or approximately flat region creates a cutting geometry in which tensile stresses of the functional spaces occurring under pressure are not directly superimposed and added together as in the case of conventional intersecting geometries.
- the plane region in the intersection region ensures that compressive stresses or significantly reduced tensile stresses occur locally in the intersection geometry according to the invention under pressure in an inner wall of the high-pressure chamber in the region of the intersection, which then overlap with the tensile stresses in an inner wall of the high-pressure channel. Since, in the case of the inventive intersection geometry, a tensile stress superimposed with a reduced tensile stress or, in the best case, with a compressive stress, the sum is lower and thus the maximum occurring stress is significantly reduced.
- a preferred embodiment of the Verscheit- range is characterized in that the high-pressure channel has a smaller diameter than the high-pressure chamber.
- the high-pressure chamber is preferably a chamber in an injector housing of a fuel injector which is filled with high-pressure fuel via a high-pressure inlet.
- a further preferred exemplary embodiment of the intersecting region is characterized in that a cylinder jacket surface of the high-pressure chamber in the intersection region has the flat region or the region which is significantly weaker. bends as the rest of the intersection area.
- the cross-section of the high-pressure chamber is preferably changed by removing material in such a way that a flat or approximately flat region is formed.
- Another preferred exemplary embodiment of the intersecting region is characterized in that the high-pressure channel opens into the high-pressure chamber in the planar region.
- the outlet of the high-pressure channel is placed according to an essential aspect of the invention in or on the flat or approximately flat region.
- intersecting region are characterized in that the transition region between the planar region and the high-pressure chamber or the high-pressure channel is rounded. As a result, undesired voltages can be further reduced.
- a further preferred exemplary embodiment of the intersecting region is characterized in that the planar region extends parallel to the longitudinal axis of the high-pressure chamber.
- the planar region extends over part of the length of the high-pressure chamber and then merges into a cylinder jacket surface.
- the flat region can also extend over the entire length of the high-pressure chamber.
- a further preferred exemplary embodiment of the intersecting region is characterized in that the high-pressure chamber, viewed in cross-section, - A -
- the tet has two circular arcs, which merge at one end in the flat area.
- the circular arcs are preferably semicircles, which are connected at their ends opposite the flat surface by a further flat or approximately flat region.
- a further preferred exemplary embodiment of the intersecting region is characterized in that the high-pressure chamber, seen in cross-section, has two elliptical arcs which merge into the planar region at one end.
- the planar region is arranged parallel to the major axis of the ellipse to which the two elliptical arcs belong.
- a further preferred exemplary embodiment of the intersecting region is characterized in that the high-pressure chamber has, viewed in cross-section, two further planar regions, which are arranged perpendicular to the planar region from which they originate and merge into the cylinder jacket surface.
- the three flat areas form a U-shaped cross-section with a base and two legs.
- the high-pressure channel opens into the base.
- the two legs go into the cylinder surface, which is reduced in the intersection of a semi-circular cross-section.
- FIG. 1 shows a conventional component with a cross section in the quarter section
- Figure 2 shows a component with an inventive
- Figure 3 shows a component according to another embodiment with two opposite planar areas in cross section
- Figure 4 shows a component according to another embodiment in cross section with an obliquely extending high-pressure bore
- FIG. 5 shows a component according to a further exemplary embodiment in cross section with three identical regions.
- FIGS. 1 to 5 a component of a solenoid valve device is shown in section.
- the component is a part of an injector housing of a fuel injector which serves to inject high-pressure fuel into a combustion chamber of an internal combustion engine.
- the 1 shows a conventional injector housing 1 with a high-pressure bore 2, which can also be used as a high-pressure bore 2. is called pressure chamber, shown in cross-section or in quarter section.
- the high-pressure bore 2 has an inner diameter of 8.52 mm in the illustrated high-pressure bore section 3.
- the injector housing 1 has an outer diameter of 28.5 mm.
- the high-pressure bore section 3 has the shape of a circular cylinder jacket surface whose longitudinal axis runs perpendicular to the plane of the drawing.
- a high-pressure bore 6 extending transversely to the cylinder jacket surface, which is also referred to as a high-pressure passage, opens into the high-pressure bore section 3.
- the high-pressure bore 6 has a diameter of 1.3 mm.
- the transition region between see the high-pressure bore 6 and the high-pressure bore section 3, which is also referred to as intersection region 5, is rounded with a radius R of 0.3 mm.
- various chambers In hydraulic systems, various chambers must be pressurized and relieved again.
- the connections between a smaller bore, for example a high-pressure inlet into a pressure chamber, for example the interior of a fuel injector, are subjected to the highest pressures.
- the high-pressure chamber is usually a bore.
- the high pressure supply line is also a bore. The point of intersection between the high-pressure chamber and the bore is usually the most heavily loaded.
- the cross-section of the high-pressure bore section which is in itself cylindrical, is locally changed so that at least one approximately flat surface is formed in the intersection region.
- the flat surface is preferably formed by removal of material, but may also be formed by adding material.
- the bore exit of the high pressure inlet bore is applied to this approximately flat surface.
- FIG. 2 shows an injector housing 11 according to the invention with a high-pressure bore 12, which is also referred to as a high-pressure chamber.
- the injector housing 11 has an outer diameter of 28.5 mm. That is, the injector case 11 has the same outer diameter as the injector case 1 shown in FIG. 1.
- the high-pressure bore 12 includes a high-pressure bore portion 13 having an inner diameter of 12 mm. The inner diameter of the high-pressure bore 13 is therefore slightly larger than in the injector housing 1 shown in FIG.
- a transverse high-pressure bore 16 which is also referred to as a high-pressure channel, opens into the high-pressure bore section 13.
- the high-pressure bore 16 has the same diameter as in the injector housing 1 shown in FIG. 1, namely 1.3 mm.
- a dashed circular arc 18 in the high-pressure bore portion 13 a circular cylinder jacket surface is indicated.
- a planar region 19 is formed in the intersection region, in which the high-pressure bore 16 into the high-pressure bore section 13 empties.
- the transition region between the flat region 19 and the high-pressure bore section 13 is rounded, with a radius of 3 mm.
- the transition region between the flat region 19 and the high pressure bore 16 is also rounded, with a radius of 0.3 mm.
- the flat region 19 extends perpendicular to the plane of the drawing and parallel to the longitudinal axis of the high-pressure bore 12.
- the distance between the flat region 19 and the longitudinal axis of the high-pressure bore 12 is 8, 52 mm in the embodiment illustrated in FIG.
- the high-pressure bore 22 comprises a high-pressure bore section 23 whose cross-section is changed according to the invention in a cutting region 25 in which a high-pressure bore 26, which is also referred to as a high-pressure passage, opens into the high-pressure bore section 23.
- Dimensioning arrows 28 and 29 denote the intersection geometry according to the invention. By further dimension arrows 31, 32 is designated the original cylindrical geometry. By further dimensioning arrows 34, 35 two opposite planar areas are designated. In one of the planar regions, the high-pressure bore 26 opens into the high-pressure bore section 23. The second planar region is arranged exactly opposite the mouth region of the high-pressure bore 26.
- FIG. 4 shows a similar injector housing 21 as in FIG. 3 in cross-section.
- a high-pressure bore 36 which is also referred to as a supply bore or high-pressure passage, is fed obliquely, which leads to smaller stresses on the inner wall of the inlet bore.
- the high-pressure bore 36 may be additionally or alternatively supplied with an elevation angle which deviates from 90 degrees.
- FIG. 5 shows an injector housing 41 with a high-pressure bore or high-pressure chamber 42 in cross-section.
- the high-pressure bore 42 comprises a high-pressure bore section 43, which essentially has the shape of a circular cylinder jacket.
- a Verschneidungs Society 45 opens a transverse high-pressure bore 46, which is also referred to as a high-pressure channel, in the high-pressure bore portion 43.
- the original nikzylin- derummantelförmige shape of the high-pressure bore portion 43 is changed so that three flat areas 61, 62 and 63 are created.
- the two planar regions 61 and 62 extend parallel to the high-pressure bore 46 and pass tangentially into the high-pressure bore section 43.
- the planar region 63 extends between two dimensioning arrows 64 and 65 perpendicular to the high-pressure bore 46, which opens into the high-pressure bore section 43 within the planar region 63.
- the three planar regions 61 to 63 form a substantially U-shaped cross section in the intersecting region 45.
- the flat portion 63 is the base of the U-shaped cross section.
- the two planar portions 61 and 62 form the legs of the U-shaped cross section, wherein the Ü- transition areas between the flat portions 61, 62 and the flat portion 63 are rounded ,
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Particle Accelerators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007018471A DE102007018471A1 (de) | 2007-04-19 | 2007-04-19 | Verschneidungsbereich zwischen einer Hochdruckkammer und einem Hochdruckkanal |
PCT/EP2008/054167 WO2008128881A1 (de) | 2007-04-19 | 2008-04-07 | Verschneidungsbereich zwischen einer hochdruckkammer und einem hochdruckkanal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2147208A1 true EP2147208A1 (de) | 2010-01-27 |
EP2147208B1 EP2147208B1 (de) | 2012-02-22 |
Family
ID=39598380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08735899A Not-in-force EP2147208B1 (de) | 2007-04-19 | 2008-04-07 | Verschneidungsbereich zwischen einer hochdruckkammer und einem hochdruckkanal |
Country Status (5)
Country | Link |
---|---|
US (1) | US8245696B2 (de) |
EP (1) | EP2147208B1 (de) |
AT (1) | ATE546637T1 (de) |
DE (1) | DE102007018471A1 (de) |
WO (1) | WO2008128881A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2392816B1 (de) * | 2010-06-03 | 2013-10-09 | Delphi Technologies Holding S.à.r.l. | Entlastung in einem Druckflüssigkeitsstromsystem |
DE102013225387A1 (de) | 2013-12-10 | 2015-06-11 | Robert Bosch Gmbh | Verbindungsbereich zwischen einem Hochdruckkanal und einer Hochdruckkammer und Kraftstoffeinspritzkomponente mit einem Verbindungsbereich |
DE102014212194A1 (de) * | 2014-06-25 | 2015-12-31 | Robert Bosch Gmbh | Verfahren zur Reduzierung der Spannung an einer Verschneidung zweier ineinander einmündenden Kanäle |
DE102019216166A1 (de) * | 2019-10-21 | 2021-04-22 | Robert Bosch Gmbh | Innendruckbelastetes Bauteil, insbesondere für die Kraftstoffeinspritzung bei einem Verbrennungsmotor |
Family Cites Families (37)
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JPS63185987U (de) * | 1987-05-23 | 1988-11-29 | ||
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 |
JPH0754616Y2 (ja) * | 1989-05-06 | 1995-12-18 | 臼井国際産業株式会社 | フユーエルデリバリパイプ |
DE3919231C2 (de) * | 1989-06-13 | 1997-03-06 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
DE19607521C1 (de) * | 1996-02-28 | 1997-04-10 | Juergen Dipl Ing Guido | Kraftstoff-Verteilerrohr |
GB2322922B (en) * | 1997-03-03 | 2002-03-06 | Usui Kokusai Sangyo Kk | Common rail and method of manufacturing the same |
GB2322920B (en) * | 1997-03-03 | 2002-02-27 | Usui Kokusi Sangyo Kaisha Ltd | Common rail and method of manufacturing the same |
CA2230742A1 (en) * | 1997-03-03 | 1998-09-03 | Usui Kokusai Sangyo Kaisha Limited | Common rail and method of manufacturing the same. |
FR2765919B1 (fr) * | 1997-07-09 | 1999-10-01 | Cideb | Dispositif de distribution de carburant pour l'alimentation des cylindres d'un moteur a combustion interne |
US6263862B1 (en) * | 1998-03-02 | 2001-07-24 | Usui Kokusai Sangyo Kaisha Limited | Common rail and method of manufacturing the same |
FR2778950B1 (fr) * | 1998-05-19 | 2000-08-11 | Cideb | Dispositif de distribution de carburant pour moteur a combustion interne |
US6082333A (en) * | 1999-01-06 | 2000-07-04 | Siemens Automotive Corporation | Rotation limiting connections between cross-over tubes and fuel rails for internal combustion engines |
DE19927145A1 (de) * | 1999-06-15 | 2000-12-28 | Bosch Gmbh Robert | Hochdruckanschluß für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
DE19933254A1 (de) * | 1999-07-15 | 2001-01-25 | Bosch Gmbh Robert | Anschlussstutzen und Gehäuse, insbesondere Kraftstoffhochdruckspeicher, mit vorgespannt angeschweißtem Anschlussstutzen für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
DE19948338A1 (de) * | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Verfahren zur Bearbeitung eines Kraftstoffhochdruckspeichers, Kraftstoffhochdruckspeicher und Anschlussstutzen zur Anwendung des Verfahrens |
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DE10012961A1 (de) * | 2000-03-16 | 2001-09-20 | Bosch Gmbh Robert | Bauteil, insbesondere Hochdruckteil für Kraftstoff-Einspritzsysteme, und Verfahren zur Herstellung eines solchen Bauteils |
JP2001295723A (ja) * | 2000-04-13 | 2001-10-26 | Denso Corp | 蓄圧式燃料噴射装置 |
US6604510B2 (en) * | 2000-10-04 | 2003-08-12 | Siemens Automotive Corporation | Fuel system including a fuel injector directly mounted to a fuel rail |
DE10056405B4 (de) | 2000-11-14 | 2005-06-16 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
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 |
DE10146743A1 (de) | 2001-09-22 | 2003-04-17 | Bosch Gmbh Robert | Einspritzventil für eine Brennkraftmaschine |
DE10152230A1 (de) | 2001-10-20 | 2003-04-30 | Bosch Gmbh Robert | Hochdruckfester Injektorkörper |
DE10154645A1 (de) * | 2001-11-07 | 2003-06-12 | Siemens Ag | Verfahren zum Herstellen einer Kraftstoffspeicherleitung mit einem vorgespannten Anschlussstück |
US6789528B2 (en) * | 2002-04-05 | 2004-09-14 | Denso Corporation | High pressure fuel supply device having plating layer and manufacturing method thereof |
DE10234909A1 (de) | 2002-07-31 | 2004-02-19 | Robert Bosch Gmbh | Kraftstoffinjektor mit hochdruckfestem Anschlußbereich |
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 |
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US7021291B2 (en) * | 2003-12-24 | 2006-04-04 | Cummins Inc. | Juncture for a high pressure fuel system |
JP2006233964A (ja) * | 2005-01-28 | 2006-09-07 | Usui Kokusai Sangyo Kaisha Ltd | ディーゼルエンジン用コモンレール |
WO2007015566A1 (ja) * | 2005-08-04 | 2007-02-08 | Nippon Steel Corporation | 自動車用高圧燃料噴射蓄圧分配器およびその製造方法 |
JP4484227B2 (ja) * | 2006-10-02 | 2010-06-16 | ボッシュ株式会社 | コモンレール |
US7699041B2 (en) * | 2007-12-11 | 2010-04-20 | Delphi Technologies, Inc. | Fuel distribution tube for direct injection fuel rail assemblies |
-
2007
- 2007-04-19 DE DE102007018471A patent/DE102007018471A1/de not_active Withdrawn
-
2008
- 2008-04-07 AT AT08735899T patent/ATE546637T1/de active
- 2008-04-07 US US12/596,589 patent/US8245696B2/en not_active Expired - Fee Related
- 2008-04-07 EP EP08735899A patent/EP2147208B1/de not_active Not-in-force
- 2008-04-07 WO PCT/EP2008/054167 patent/WO2008128881A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008128881A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE546637T1 (de) | 2012-03-15 |
WO2008128881A1 (de) | 2008-10-30 |
US8245696B2 (en) | 2012-08-21 |
EP2147208B1 (de) | 2012-02-22 |
US20100116251A1 (en) | 2010-05-13 |
DE102007018471A1 (de) | 2008-10-23 |
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