EP1862668A1 - Dispositif de couplage et assemblage de liaison - Google Patents
Dispositif de couplage et assemblage de liaison Download PDFInfo
- Publication number
- EP1862668A1 EP1862668A1 EP06011398A EP06011398A EP1862668A1 EP 1862668 A1 EP1862668 A1 EP 1862668A1 EP 06011398 A EP06011398 A EP 06011398A EP 06011398 A EP06011398 A EP 06011398A EP 1862668 A1 EP1862668 A1 EP 1862668A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking element
- fuel connection
- bottom portion
- injector
- fuel
- 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
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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/852—Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches
-
- 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
- F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
-
- 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
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
Definitions
- the invention relates to a coupling arrangement for coupling an injector to a fluid supply.
- the coupling arrangement comprises a fuel connection which is cup-shaped having a bottom portion and a side portion.
- the fuel connection is fixed to a pipe of the fluid supply and communicates with the pipe through a fuel opening in the bottom portion of the fuel connection.
- the invention relates to a connection assembly for connecting the injector to the fluid supply comprising the coupling arrangement.
- EP 1 255 038 B1 discloses a fuel injection system for the direct injection of fuel into at least one combustion space of an internal combustion engine.
- the fuel injection system has at least one fuel injection valve for each combustion space.
- the fuel injection valve can be inserted in each case at an injection portion into an assigned receiving board formed on a cylinder head of the internal combustion engine.
- the invention is distinguished concerning a first aspect of the invention by a coupling arrangement for coupling an injector to a fluid supply.
- the coupling arrangement comprises a fuel connection, a locking element, an outer spring, an inner spring, at least one pin of the connecting element, and at least one recess which is formed in the locking element.
- the fuel connection is cup-shaped and has a bottom portion and a side portion.
- the fuel connection is fixed to a pipe of the fluid supply and communicates with the pipe through a fuel opening in the bottom portion of the fuel connection.
- the locking element is cup-shaped and comprises a rim, a bottom portion, and side portion.
- the locking element is coupled to the fuel connection. At least a part of the side portion of the locking element and of the fuel connection form an overlapping area.
- the inner spring is arranged in the fuel connection and is fixed to the bottom portion of the fuel connection at an axial end of the inner spring.
- the outer spring is arranged intermediate the pipe and the locking element.
- the outer spring has a larger diameter than the inner spring and the outer spring forces the locking element away from the pipe.
- the pin of the connecting element is arranged in the overlapping area at the fuel connection.
- the recess is formed in the locking element and extends from the rim of the locking element towards the bottom portion of the locking element. Further, the recess extends at least partly parallel to the bottom portion of the locking element and further extends towards the rim of the locking element to a second end of the recess of the locking element. The second end of the recess of the locking element takes in the pin of the fuel connection.
- the recess of the locking element and the pin of the fuel connection enable a fixation of the locking element to the fuel connection by a positive fit.
- the outer spring enables the fixation by a press fit. So, the locking element may be fixed to the fuel connection very fast and in a very simple way without the need for special tools.
- the coupling arrangement enables a light flexible movement in a small range of the locking element relative to the fuel connection. So, the coupling arrangement enables a proper flexible coupling of the locking element to the fuel connection. If the locking element holds an injector, the coupling arrangement contributes to a proper flexible coupling of the injector to the fluid supply.
- the locking element has a bigger diameter than the fuel connection.
- the outer spring is circumferentially arranged around an axial section of the fuel connection.
- the invention is distinguished concerning a second aspect of the invention by the coupling arrangement for coupling the injector to the fluid supply.
- the coupling arrangement comprises the fuel connection, the locking element, the inner spring, the outer spring, and at least one pin of the locking element, and at least one recess of the fuel connection.
- the fuel connection is cup-shaped and has a rim, a bottom portion and a side portion.
- the fuel connection is fixed to the pipe and communicates with the pipe of the fluid supply through a fuel opening in the bottom portion of the fuel connection.
- the locking element is cup-shaped and comprises the bottom portion and the side portion.
- the locking element is coupled to the fuel connection. At least the part of the side portions of the locking element and of the fuel connection form the overlapping area.
- the inner spring is arranged in the fuel connection and is fixed to the bottom portion of the fuel connection at the axial end of the inner spring.
- the outer spring is arranged intermediate the pipe and the locking element.
- the outer spring has the larger diameter than the inner spring and the outer spring forces the locking element away from the pipe.
- the pin of the locking element is arranged in the overlapping area at the locking element.
- the recess of the fuel connection is formed in the fuel connection and extends from the rim of the fuel connection towards the bottom portion of the fuel connection. Further, the recess of the fuel connection extends at least partly parallel to the bottom portion of the fuel connection and further extends towards the rim of the fuel connection to the second end of the recess of the fuel connection.
- the second end of the recess of the fuel connection takes in the pin of the locking element.
- the pin of the locking element and the recess of the fuel connection enable the fixation of the locking element to the fuel connection by the press fit and the mechanical fit. This may contribute to the proper flexible coupling of the injector to the cylinder head.
- the locking element has the bigger diameter than the fuel connection and the outer spring is circumferentially arranged around the axial section of the fuel connection.
- connection assembly for connecting the injector to the fluid supply.
- the connection assembly comprises the coupling arrangement and a connection section of the injector.
- the connection section is radially surrounded by the locking element.
- the connection section protrudes into the coupling arrangement through an injector opening in the bottom portion of the locking element.
- the connection section has a fixation body which is fixed to the connection section of the injector and which has at least partly a larger diameter than the injector opening of the bottom portion of the locking element.
- the injector opening of the bottom portion of the locking element and at least a part of the connecting section of the injector are formed and arranged in such a way that the locking element holds the injector in its position respectively a rotation of the injector around an axis of the injector.
- a cylinder head 2 (figure 1) has a recess 4.
- An injector 6 is arranged in the recess 4 of the cylinder head 2.
- the injector 6 is coupled to a pipe 8 of a fluid supply by a connection assembly.
- the connection assembly comprises a coupling arrangement 10 and a connecting section 10 of the injector 6.
- the coupling arrangement 10 comprises a fuel connection 12 and a locking element 14.
- the fuel connection 12 is cup-shaped comprising a rim 11, a bottom portion and a side portion of the fuel connection 12.
- the fuel connection 12 communicates with the pipe 8 through a fuel opening 13 in the bottom portion of the fuel connection 12.
- a pin 26 of the fuel connection 12 is arranged at an outside of the side portion of the fuel connection 12 in an overlapping area which is formed by at least a part of the side portion of the locking element 14 and by at least a part of the side portion of the fuel connection 12.
- the locking element 14 is cup-shaped having a rim 17 of the locking element 14, a side portion, and a bottom portion.
- the injector 6 protrudes into the coupling arrangement 10 through an injector opening 15 of the locking element 14 at the bottom portion of the locking element 14.
- the injector 6 has a connecting section 20 which is radially surrounded by the coupling arrangement 10 and, in particular, by the locking element 14.
- the connecting section 20 has a fixation body 22.
- the fixation body 22 is a washer which is fixed to the injector 6 at the inside of the washer and which has a larger outer diameter than the injector opening 15 of the locking element 14.
- the locking element 14 is pressed away from the pipe 8 by an outer spring 16.
- the outer spring 16 is circumferentially arranged around an axial section of the fuel connection 12 and intermediate the pipe 8 and the locking element 14.
- An inner spring 18 is arranged in the fuel connection 12 and is fixed to the bottom portion of the fuel connection 12 at one axial end of the inner spring 18. The inner spring 18 forces the injector 6 away from the pipe 8 in its seat in the recess 4 of the cylinder head 2.
- connection section 20 of the injector 6 and the injector opening 15 of the locking element 14 are formed and arranged in such a way that the injector 6 is held in its position according to a rotation of the injector 6 around an axis X of the injector 6 by the injector opening 15 of the locking element 14 (figure 2).
- a part of the injector opening 15 has a spherical shape and an other part of the injector opening 15 has a linear shape.
- the injector 6 comprises a similar shape in an corresponding area at the connection section 20 at its outer shell. So, the rotation of the injector 6 around its axis X is prevented by the mechanical fit between the injector opening 15 of the locking element 14 and the corresponding area at the connection section 20 of the injector 6.
- a recess 28 (figure 3) of the locking element 40 extends from a first end 30 of the recess 28 of the locking element 14 towards the bottom portion of the locking element 14 and then further the recess 28 of the locking element 14 extends at least partly parallel to the bottom portion of the locking element 14.
- the recess 28 of the locking element 14 further extends from the at least partly parallel part of the recess 28 of the locking element 14 towards the rim 13 of the locking element 14 to a second end 32 of the recess 28 of the locking element 14.
- the extension of the recess 28 of the locking element 14 enables a mechanical fit between the locking element 14 and the fuel connection 12.
- the locking element 14 is pre-assembled to the injector 6 in such a way that the bottom portion of the locking element 14 is axially arranged between the fixation body 22 of the injector 6 and that part of the injector 6 which is arranged in the recess 4 of the cylinder head 2. Then, the injector 6 is stuck into the fuel connection 12 and the locking element 14 is stuck onto the fuel connection 12 in such a way that the first end 30 of the recess 28 of the locking element 14 takes in the pin 26 of the fuel connection 12. Then, the locking element 14 is forced further towards the pipe 8 and so the pin 26 of the fuel connection 12 follows the recess 28 of the locking element 14.
- the locking element 14 has to be turned in such way that after the turn the pin 26 of the locking element 14 is arranged underneath the second end 26 of the recess 28 of the locking element 14, with respect to figure 3. Then, the outer spring 16 presses the locking element 14 away from the pipe 8 in such a way that the second end 32 of the recess 28 of the locking element is pressed against the pin 26 of the fuel connection 12. So, the outer spring 16 enables a press fit of the locking element 14 to the fuel connection 12.
- the locking element 14 and, respectively, the injector 6 are fixed to the fuel connection 12 by a positive fit and by a press fit. This contributes to a proper coupling of the injector 6 to the fluid supply in a very easy and very fast way. This contributes to low costs for manufacturing the connection assembly.
- the fuel connection 12 has a recess 40 (figure 5).
- the locking element 14 has a pin 46 of the locking element 14.
- the recess 40 of the fuel connection 12 extends from the rim 11 of the fuel connection 12 towards the pipe 8 and further at least partly parallel to the bottom portion of the fuel connection 12 and further towards the rim 11 of the fuel connection 12 to a second end 44 of the recess 40 of the fuel connection 12.
- the pin 46 of the locking element 14 is introduced into the recess 40 of the fuel connection 12. Then the outer spring 16 has to be compressed in such a way that the pin 46 of the locking element 14 arrives in the parallel part of the recess 40 of the fuel connection 12. Then, the locking element 14 has to be turned around its axis X in such a way that the pin 46 of the locking element 40 is arranged above the second end 44 of the locking element 14, with respect to figure 5. Then, the outer spring 16 may force the pin 46 of the locking element 14 against the second end 44 of the recess 40 of the fuel connection 12.
- an 0-ring seal 24 is arranged between the injector 6 and the fuel connection 12, in order to have a proper sealing between the injector 6 and the fuel connection 12.
- the recesses of the fuel connection 12 and of the locking element 14 comprise alternative shapes.
- the fuel connection 12 and/or the locking element 14 may comprise one or more pins.
- the fuel connection 12 and/or the locking element 14 may comprise the pin 26 and the recess 28 of the fluid connection 12 and, respectively, the pin 46 and the recess 40 of the locking element.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20060011398 EP1862668B1 (fr) | 2006-06-01 | 2006-06-01 | Dispositif de couplage et assemblage de liaison |
DE200660005796 DE602006005796D1 (de) | 2006-06-01 | 2006-06-01 | Verbinder und Verbundanordnung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20060011398 EP1862668B1 (fr) | 2006-06-01 | 2006-06-01 | Dispositif de couplage et assemblage de liaison |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1862668A1 true EP1862668A1 (fr) | 2007-12-05 |
EP1862668B1 EP1862668B1 (fr) | 2009-03-18 |
Family
ID=36702640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060011398 Expired - Fee Related EP1862668B1 (fr) | 2006-06-01 | 2006-06-01 | Dispositif de couplage et assemblage de liaison |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1862668B1 (fr) |
DE (1) | DE602006005796D1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2292920A1 (fr) * | 2009-07-24 | 2011-03-09 | Continental Automotive GmbH | Dispositif de couplage |
CN103104392A (zh) * | 2012-12-08 | 2013-05-15 | 宁波市鄞州云帆工程咨询有限公司 | 具有反向锁固功能的喷油器底座 |
JP2016538474A (ja) * | 2013-11-06 | 2016-12-08 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 高圧下にある流体を調量するための弁 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5016594A (en) * | 1989-03-10 | 1991-05-21 | Robert Bosch Gmbh | Fuel distributor for fuel injection systems of internal combustion engines |
US5038738A (en) * | 1989-06-13 | 1991-08-13 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
US6148797A (en) * | 1997-12-17 | 2000-11-21 | Robert Bosch Gmbh | Mounting device for mounting fuel injection valves |
DE19953888A1 (de) * | 1999-11-09 | 2001-05-10 | Siemens Ag | Leckageanschluss mit Rastsicherung |
EP1255038A2 (fr) * | 1997-06-25 | 2002-11-06 | Robert Bosch Gmbh | Système d'injection de carburant |
US20050116056A1 (en) * | 2002-07-12 | 2005-06-02 | Waldemar Hans | Fuel injector and method for installing a fuel injector in a valve seat |
-
2006
- 2006-06-01 DE DE200660005796 patent/DE602006005796D1/de active Active
- 2006-06-01 EP EP20060011398 patent/EP1862668B1/fr not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5016594A (en) * | 1989-03-10 | 1991-05-21 | Robert Bosch Gmbh | Fuel distributor for fuel injection systems of internal combustion engines |
US5038738A (en) * | 1989-06-13 | 1991-08-13 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
EP1255038A2 (fr) * | 1997-06-25 | 2002-11-06 | Robert Bosch Gmbh | Système d'injection de carburant |
US6148797A (en) * | 1997-12-17 | 2000-11-21 | Robert Bosch Gmbh | Mounting device for mounting fuel injection valves |
DE19953888A1 (de) * | 1999-11-09 | 2001-05-10 | Siemens Ag | Leckageanschluss mit Rastsicherung |
US20050116056A1 (en) * | 2002-07-12 | 2005-06-02 | Waldemar Hans | Fuel injector and method for installing a fuel injector in a valve seat |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2292920A1 (fr) * | 2009-07-24 | 2011-03-09 | Continental Automotive GmbH | Dispositif de couplage |
CN103104392A (zh) * | 2012-12-08 | 2013-05-15 | 宁波市鄞州云帆工程咨询有限公司 | 具有反向锁固功能的喷油器底座 |
JP2016538474A (ja) * | 2013-11-06 | 2016-12-08 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 高圧下にある流体を調量するための弁 |
US10378653B2 (en) | 2013-11-06 | 2019-08-13 | Robert Bosch Gmbh | Valve for the metering of highly pressurized fluid |
Also Published As
Publication number | Publication date |
---|---|
DE602006005796D1 (de) | 2009-04-30 |
EP1862668B1 (fr) | 2009-03-18 |
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