EP2153055A1 - Brennkraftmaschine mit dichtungsschutz für ein kraftstoffeinspritzventil - Google Patents
Brennkraftmaschine mit dichtungsschutz für ein kraftstoffeinspritzventilInfo
- Publication number
- EP2153055A1 EP2153055A1 EP08736639A EP08736639A EP2153055A1 EP 2153055 A1 EP2153055 A1 EP 2153055A1 EP 08736639 A EP08736639 A EP 08736639A EP 08736639 A EP08736639 A EP 08736639A EP 2153055 A1 EP2153055 A1 EP 2153055A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- injection valve
- fuel injection
- sealing element
- 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
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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting 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
- 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
- F02M61/166—Selection of particular materials
-
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
Definitions
- the present invention relates to an internal combustion engine with a seal protection for a gasket of a fuel injection valve.
- Internal combustion engines are known from the prior art in different configurations.
- internal combustion engines which inject a fuel by means of a fuel injection valve directly into a combustion chamber.
- the fuel injection valve is arranged in a cylinder head and injects the fuel directly into the combustion chamber.
- an annular seal such as a Teflon ring is used for sealing between the fuel injection valve and the cylinder head in this case. Since very high temperatures prevail in the combustion chamber during operation and the sealing ring between the fuel injection valve and the cylinder head is arranged relatively close to the combustion chamber, in particular negative thermal effects can act on the sealing ring.
- DE 10 2005 019 313 A1 discloses a fuel injection valve I, in which a slotted shielding ring is arranged on the fuel injection valve.
- the shielding ring is arranged between the seal and the combustion chamber and has a rectangular cross-section. In this way, however, no complete shielding of the sealing element can be ensured, since due to the slot and the rectangular cross-section no complete protection of the sealing element is possible.
- the internal combustion engine according to the invention with the features of claim 1 has the advantage over that it provides excellent shielding for a arranged between a fuel injection valve and a cylinder head sealing element, so that the sealing element has a very long life.
- the shield is arranged in the axial direction of the fuel injection valve between the sealing element and a combustion chamber of the internal combustion engine.
- the shield has a ring shape, which in addition has a round cross section or a radially outwardly rounded cross-section.
- the use of the round or rounded cross-section of the shielding ring makes it possible for the shielding ring to sit firmly between the cylinder head wall and an outer housing wall of the fuel injection valve.
- the shielding ring is made of wire.
- the shielding can be provided particularly simple and inexpensive.
- a shield made of wire can also be easily mounted.
- the shield is made of a high temperature resistant material, in particular an adhesion temperature resistant plastic.
- the shielding ring is preferably arranged in a groove formed in the fuel injection valve.
- the cylinder head wall can be very easily, e.g. as a cylindrical bore, be formed.
- the sealing element is arranged in a first groove formed in the fuel injection valve, and the shielding ring is arranged in a second groove formed in the fuel injection valve I.
- the shielding ring and the sealing element are arranged in a common groove in the fuel injection valve and spaced from each other. This makes it possible that only one groove for receiving the shielding ring and the sealing element in the fuel injection valve is necessary.
- the shielding ring particularly preferably has a closed ring shape. This can be achieved, for example, by a joining operation of the free ends of the shielding ring, e.g. by welding or gluing done. As a result, in particular problems are avoided at a gap between the fuel injection valve and the cylinder head wall.
- the shield ring has an open, i. radially slotted, ring shape on. As a result, the shielding ring can be widened during assembly.
- the shielding ring is arranged in a groove which is formed in the cylinder head.
- the shielding ring can be mounted in the cylinder head before the fuel injection valve is mounted.
- the shield ring is arranged partially in a groove formed in the cylinder head and partly in a groove formed in the fuel injection valve.
- the shielding ring is partially seated in the wall of the cylinder head and partially in the housing of the fuel injection valve, each correspondingly deep grooves are formed.
- the grooves preferably have a depth which corresponds to a radius of the shielding ring with a round cross section.
- a diameter of the shielding ring is equal to a thickness of the sealing element in the radial direction.
- the shielding ring with a thin-walled C-shaped profile which has a convex curvature radially outward and thus encloses an open cavity towards the inside.
- this embodiment of the shield is a particularly material-saving variant, which provides a high elasticity and shielding security.
- an extended gap is provided in a side facing away from the combustion chamber side of the sealing element, which can accommodate excess material or abrasion or the like of the sealing element.
- Figure 1 is a schematic sectional view of an internal combustion engine according to a first embodiment of the invention
- Figure 2 is a schematic sectional view of an internal combustion engine according to a second embodiment of the present invention
- Figure 3 is a schematic sectional view of an internal combustion engine according to a third embodiment of the present invention
- Figure 4 is a schematic sectional view of a Internal combustion engine according to a fourth embodiment of the present invention
- Figures 5 to 9 five further alternative embodiments of Ableringen having a radially outwardly rounded cross-section.
- FIG. 1 shows the internal combustion engine 1 only partially and very schematically.
- the reference numeral 2 denotes a cylinder head and the reference numeral 3 denotes a fuel injection valve.
- the fuel injection valve 3 injects fuel 5 directly into a combustion chamber 4, which is shown schematically in FIG.
- the reference numeral 2 denotes a cylinder head and the reference numeral 3 denotes a fuel injection valve.
- the fuel injection valve 3 injects fuel 5 directly into a combustion chamber 4, which is shown schematically in FIG.
- Fuel injection valve 3 is fixed in the cylinder head 2 and has a sealing element 6, which is for example a Teflon ring.
- the sealing element 6 is arranged in a first groove 16 in the fuel injection valve 3.
- the sealing element 6 thus seals the combustion chamber in the region of the fuel injection valve 3. Since the sealing element 6 is arranged relatively close to the combustion chamber, it is possible that during operation of the
- a shielding ring 7 is now arranged in the gap 8, which has a round cross-section.
- the shield ring 7 is made of a wire material and is disposed in a second annular groove 17.
- the shielding ring 7 is thus arranged in the axial direction X-X of the fuel injection valve between the sealing element 6 and the combustion chamber 4.
- a receiving space 10 for receiving abrasion or the like is also arranged.
- the receiving space 10 is e.g. formed by an expanded gap between the cylinder head 2 and the fuel injection valve 3.
- the shielding ring 7 with round cross section has the advantage that it allows a linear seal on the cylinder head and a linear seal on the fuel injection valve 3. In this way it can be ensured that influences from the combustion chamber 4 do not act directly on the sealing element 6. This allows the sealing element 6 have a very long life. In particular, the sealing element 6 can thereby be protected from a direct effect of the combustion chamber gases.
- the sealing element 6 and the shielding ring 7 are not in contact with each other. This can also be avoided in particular that due to heat conduction damage to the sealing element occurs.
- the sealing element 6 and the shielding ring 7 in a common groove 9, which in
- Fuel injection valve 3 is provided, arranged.
- the sealing element 6 and the shielding ring 7 are arranged directly adjacent to one another in the groove 9.
- a simpler and more cost-effective production is possible since only one common groove for the sealing element 6 and the shielding ring 7 in the housing portion of the fuel injection valve 3 must be made.
- a predetermined distance between the sealing element 6 and the shielding ring 7 in the common groove 9 may be present. Otherwise, this embodiment corresponds to the previous embodiment, so that reference can be made to the description given there.
- the third embodiment is similar to the first embodiment, in contrast to the shield 7 is disposed both partially in the cylinder head 2 and partially in the fuel injection valve 3.
- a groove 2a is formed in the cylinder head 2 and a groove 3a is formed in the fuel injection valve 3.
- the two grooves 2a, 3a are arranged at the same height.
- the depth of the two grooves 2a and 3a is chosen such that each groove receives approximately half of the shielding ring 7.
- the depths of the grooves 2a and 3a are each approximately the same as the radius of the shielding ring 7 having a round cross section.
- Figure 4 shows a fourth embodiment, wherein identical or functionally identical parts are again denoted by the same reference numerals as in the previous embodiments.
- the fourth embodiment corresponds essentially to the second embodiment, wherein in the fourth embodiment, a recess 9a is provided in the common groove 9.
- the recess 9a is groove-shaped and runs around the entire circumference. Otherwise, this embodiment corresponds to the previous embodiment, so that reference can be made to the description given there.
- FIGS. 5 to 9 show five further alternative embodiments of shielding rings 7, which have a radially outwardly rounded cross-section, but are not completely round.
- the shielding rings 7 shown in FIGS. 5, 6 and 7 have, on their inside towards the center axis X-X, e.g. each one parallel to the central axis X-X extending radially inner boundary wall.
- the radially outer boundary wall of the shielding ring 7 extends either with a constant radius over its entire thickness (FIG. 5) or only with rounded corner regions whose
- shielding rings 7 shown in FIGS. 8 and 9 are characterized in that they have a C-shaped profile with a convex curvature radially outward and thus enclose an open cavity towards the central axis X-X.
- the shielding rings 7 are carried out so far similar to a curved thin-walled sheet and thus have no solid profile.
- Figure 8 is a
- Shielding ring 7 is shown, which is formed with a variable wall thickness, while the shielding ring 7 shown in Figure 9 is formed with a constant wall thickness.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007020506 | 2007-05-02 | ||
DE102008001489A DE102008001489A1 (de) | 2007-05-02 | 2008-04-30 | Brennkraftmaschine mit Dichtungsschutz für ein Kraftstoffeinspritzventil |
PCT/EP2008/055328 WO2008135489A1 (de) | 2007-05-02 | 2008-04-30 | Brennkraftmaschine mit dichtungsschutz für ein kraftstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2153055A1 true EP2153055A1 (de) | 2010-02-17 |
EP2153055B1 EP2153055B1 (de) | 2013-06-19 |
Family
ID=39671509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08736639.9A Not-in-force EP2153055B1 (de) | 2007-05-02 | 2008-04-30 | Brennkraftmaschine mit dichtungsschutz für ein kraftstoffeinspritzventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110303192A1 (de) |
EP (1) | EP2153055B1 (de) |
CN (1) | CN101675241B (de) |
BR (1) | BRPI0807545A2 (de) |
DE (1) | DE102008001489A1 (de) |
WO (1) | WO2008135489A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012202254A1 (de) * | 2012-02-15 | 2013-08-22 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP2636880A1 (de) * | 2012-03-06 | 2013-09-11 | Delphi Automotive Systems Luxembourg SA | Dichtung für Einspritzdüse |
JP5831510B2 (ja) | 2012-11-20 | 2015-12-09 | 株式会社デンソー | 燃料噴射弁および燃料噴射弁の取付方法 |
DE102013200909A1 (de) * | 2013-01-22 | 2014-07-24 | Robert Bosch Gmbh | Brennstoffeinspritzanlage mit einer Brennstoff führenden Komponente, einem Brennstoffeinspritzventil und einem Verbindungselement |
JP5910586B2 (ja) * | 2013-08-23 | 2016-04-27 | 株式会社デンソー | 燃料噴射弁 |
DE102014225976A1 (de) * | 2014-12-16 | 2016-06-16 | Robert Bosch Gmbh | Brennstoffeinspritzvorrichtung |
GB201511355D0 (en) * | 2015-06-29 | 2015-08-12 | Delphi Int Operations Lux Srl | Sealing arrangement |
GB201602694D0 (en) * | 2016-02-16 | 2016-03-30 | Delphi Internat Operations Luxembourg S À R L | Nozzle assembly and fuel injector |
EP3516202A4 (de) * | 2016-10-31 | 2020-06-10 | Cummins Inc. | Injektorhülsenanordnung und verfahren zur reparatur vor ort |
DE102017222941A1 (de) * | 2017-12-15 | 2019-06-19 | Siemens Aktiengesellschaft | Hochspannungsleistungsschalter und Verfahren zum elektromagnetischen Abschirmen einer Vakuumschaltröhre in einem Isolator |
DE102018221403A1 (de) | 2018-12-11 | 2020-06-18 | Robert Bosch Gmbh | Brennstoffeinspritzvorrichtung |
US11174825B2 (en) * | 2019-02-11 | 2021-11-16 | Caterpillar Inc. | Seal configuration for fuel injector |
DE102021202728A1 (de) * | 2021-03-22 | 2022-09-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Dichtelement |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
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US3894742A (en) * | 1973-07-20 | 1975-07-15 | Hitco | Rope sealing means |
US4417733A (en) * | 1978-10-10 | 1983-11-29 | Metex Corporation | Method of producing high temperature composite seal |
DE2908095C2 (de) * | 1979-03-02 | 1984-02-16 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage für Brennkraftmaschinen |
FR2596483B1 (fr) * | 1986-04-01 | 1989-08-25 | Europ Propulsion | Joint statique metallique et assemblage comportant un tel joint |
US4690221A (en) * | 1986-07-03 | 1987-09-01 | Shell California Production Inc. | Well tubing hanger method and apparatus for use in well control |
US4792160A (en) * | 1987-12-07 | 1988-12-20 | Hwang Biing Yih | Structure for pipe fittings |
US5189782A (en) * | 1990-12-20 | 1993-03-02 | Ford Motor Company | Method of making integrally formed and tuned fuel rail/injectors |
US5247918A (en) * | 1992-09-17 | 1993-09-28 | Siemens Automotive L.P. | Sealing a direct injection fuel injector to a combustion chamber |
US5358262A (en) * | 1992-10-09 | 1994-10-25 | Rolls-Royce, Inc. | Multi-layer seal member |
DE69612135T2 (de) * | 1995-05-19 | 2001-09-06 | Siemens Automotive Corp Lp | Luftunterstütztereinspritzventil und Umfassungsbuchse des Ventils |
US5584271A (en) * | 1995-11-14 | 1996-12-17 | Freudenberg-Nok General Partnership | Valve stem seal |
US6039325A (en) * | 1996-10-17 | 2000-03-21 | The United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration | Resilient braided rope seal |
DE19808068A1 (de) * | 1998-02-26 | 1999-09-02 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JP3991452B2 (ja) * | 1998-06-19 | 2007-10-17 | 三菱自動車工業株式会社 | インジェクタの取付け構造 |
US5985143A (en) * | 1998-09-08 | 1999-11-16 | Lin; Maw-Chang | Structure water filter outer shell |
JP3890809B2 (ja) * | 1999-04-23 | 2007-03-07 | 井関農機株式会社 | 農業用トラクタの変速制御装置 |
JP3647673B2 (ja) * | 1999-04-28 | 2005-05-18 | 三菱電機株式会社 | 筒内噴射用燃料噴射弁のシール機構 |
US6325049B1 (en) * | 1999-06-23 | 2001-12-04 | Siemens Automotive Corporation | Fuel injector with orientation feature for orienting injector with respect to the manifold or head |
DE10038300A1 (de) * | 2000-08-05 | 2002-02-14 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10055641A1 (de) * | 2000-11-10 | 2002-06-13 | Siemens Ag | Dichtelement zum Anordnen zwischen einem Injektor und einem Zylinderkopf und Injektor und Zylinderkopf mit einem solchen Dichtelement |
DE10103826A1 (de) * | 2001-01-29 | 2002-08-14 | Bosch Gmbh Robert | Einspritzventil für Saugrohr oder Zylinderkopf mit integriertem Kraftstoffzulauf |
JP2004239124A (ja) * | 2003-02-05 | 2004-08-26 | Hitachi Ltd | 燃料噴射弁及び筒内噴射式エンジン |
DE10337892A1 (de) * | 2003-08-18 | 2005-03-17 | Daimlerchrysler Ag | Brennstoffeinspritzventil |
JP4089577B2 (ja) * | 2003-09-25 | 2008-05-28 | トヨタ自動車株式会社 | 筒内噴射用インジェクタ |
JP4267433B2 (ja) * | 2003-11-25 | 2009-05-27 | トヨタ自動車株式会社 | 燃料噴射弁用燃焼ガスシール |
DE102005019313A1 (de) | 2005-04-26 | 2006-11-02 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US7383818B1 (en) * | 2007-04-04 | 2008-06-10 | Gm Global Technology Operations, Inc. | Fuel injector with secondary combustion seal |
-
2008
- 2008-04-30 EP EP08736639.9A patent/EP2153055B1/de not_active Not-in-force
- 2008-04-30 US US12/305,119 patent/US20110303192A1/en not_active Abandoned
- 2008-04-30 BR BRPI0807545-0A2A patent/BRPI0807545A2/pt not_active IP Right Cessation
- 2008-04-30 WO PCT/EP2008/055328 patent/WO2008135489A1/de active Application Filing
- 2008-04-30 DE DE102008001489A patent/DE102008001489A1/de not_active Withdrawn
- 2008-04-30 CN CN200880014525.3A patent/CN101675241B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008135489A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2153055B1 (de) | 2013-06-19 |
CN101675241A (zh) | 2010-03-17 |
CN101675241B (zh) | 2014-12-17 |
DE102008001489A1 (de) | 2008-11-06 |
US20110303192A1 (en) | 2011-12-15 |
WO2008135489A1 (de) | 2008-11-13 |
BRPI0807545A2 (pt) | 2014-06-17 |
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