EP1366286A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1366286A1 EP1366286A1 EP02721981A EP02721981A EP1366286A1 EP 1366286 A1 EP1366286 A1 EP 1366286A1 EP 02721981 A EP02721981 A EP 02721981A EP 02721981 A EP02721981 A EP 02721981A EP 1366286 A1 EP1366286 A1 EP 1366286A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing ring
- fuel injection
- injection valve
- valve according
- 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
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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
-
- 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
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that a sealing ring formed under a variable radius of curvature can be inexpensively produced from a copper-tin alloy, can be used repeatedly and is easy to assemble.
- a particular advantage is that the sealing ring has an overlap area which, by latching the ends of the sealing ring into corresponding recesses, achieves a space-saving and flexible shape of the sealing ring.
- the sealing ring can advantageously be curved on the inside and outside either under the same or under different radii of curvature, as a result of which a uniform thickness of the sealing ring or a cross section tapering towards the edges can be achieved.
- FIG. 2 shows a schematic section in area II in FIG. 1 from the fuel injector designed according to the invention
- FIG. 3 shows a schematic section in the same area as in FIG. 2 from a second exemplary embodiment of a fuel injector designed according to the invention
- FIG. 4 shows a schematic view of a sealing ring according to FIG. 2 or FIG. 3.
- the fuel injection valve 1 is designed in the form of a fuel injection valve for fuel injection systems of mixture-compressing, spark-ignition internal combustion engines.
- Fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine.
- the fuel injector 1 consists of a nozzle body 2, in which a valve needle 3 is arranged.
- the valve needle 3 is operatively connected to a valve closing body 4, which forms a valve seat surface 6 arranged on a valve seat body 5 Sealing seat interacts.
- fuel injector 1 is a fuel injector 1 that opens inward and has a spray opening 7.
- the nozzle body 2 is sealed by a seal 8 against an outer pole 9 of a magnetic coil 10 and by a sealing ring 34 against the cylinder head of the internal combustion engine, which is not shown in FIG. 1.
- the sealing ring 34 is produced from a convexly curved ring which overlaps at two ends 35 by punching and rolling from profiled strip material. A detailed explanation of the sealing ring 34 can be found in the description of FIGS. 2 to 4.
- the magnet coil 10 is encapsulated in a coil housing 11 and wound on a coil carrier 12, which bears against an inner pole 13 of the magnet coil 10.
- the inner pole 13 and the outer pole 9 are separated from one another by a gap 26 and are supported on a connecting component 29.
- the magnet coil 10 is excited via a line 19 by an electrical current that can be supplied via an electrical plug contact 17.
- the plug contact 17 is surrounded by a plastic sheath 18, which can be molded onto the inner pole 13.
- the valve needle 3 is guided in a valve needle guide 14, which is disc-shaped.
- a paired adjusting washer 15 is used for stroke adjustment.
- An armature 20 is located on the other side of the adjusting washer 15. This armature is non-positively connected via a first flange 21 to the valve needle 3, which is connected to the first flange 21 by a weld seam 22.
- a restoring spring 23 is supported on the first flange 21 and, in the present design of the fuel injector 1, is preloaded by a sleeve 24.
- Abströmsei ig the armature 20, a second flange 31 is arranged, which serves as a lower anchor stop. It is non-positively connected to the valve needle 3 via a weld seam 33.
- An elastic intermediate ring 32 is arranged between the armature 20 and the second flange 31 for damping armature bumpers when the fuel injector 1 closes.
- the first flange 21 on the valve needle 3 is acted upon by the return spring 23 against its lifting direction in such a way that the valve closing body 4 on the valve seat 6 is held in sealing contact.
- the armature 20 rests on the intermediate ring 32, which is supported on the second flange 31.
- the magnet coil 10 When the magnet coil 10 is excited, it builds up a magnetic field which moves the armature 20 in the stroke direction against the spring force of the return spring 23.
- the armature 20 takes the first flange 21, which is welded to the valve needle 3, and thus also the valve needle 3 in the lifting direction.
- the valve closing body 4, which is operatively connected to the valve needle 3, lifts off from the valve seat surface 6, as a result of which the fuel led to the spray opening 7 via the fuel channels 30a to 30c is sprayed off.
- part of the cylinder head 36 of the internal combustion engine is shown schematically in FIG. 2.
- the sealing ring 34 is located in a groove-like recess 40 of the nozzle body 2 that it seals the fuel injection valve 1 against the cylinder head 36 of the internal combustion engine.
- the sealing ring 34 is under a slight pressing force, which flattens the convex radius of curvature of the sealing ring 34 mentioned above, which creates the sealing effect.
- the sealing ring 34 is spread with outer edges 41 in the circumferential recess 40.
- the sealing ring 34 is preferably produced by punching out profiled strip material and then rolling it.
- the sealing ring 34 thus formed has two ends 35 which are shaped such that they overlap axially and engage in one another in the circumferential direction. A possible form of overlap can be seen in FIG. 4.
- the first exemplary embodiment of the sealing ring 34 designed according to the invention shown in FIG. 2 has a radius of curvature of the same size for an inside 38 as for an outside 39 of the sealing ring 34. This means that the material of the sealing ring 34 is uniformly thick at all points.
- the second exemplary embodiment of a fuel injector 1 designed according to the invention shows a variable thickness of the sealing ring 34.
- the thickness of the material decreases towards the edges 41 of the sealing ring 34, which is due to a larger radius of curvature Inside 38 compared to the outside 39 is achieved.
- the shape thus created is advantageous insofar as the contact surface in the recess 40 is smaller than in the first exemplary embodiment, thereby simplifying assembly on the one hand and improving the sealing effect on the other.
- the sealing ring 34 In order to facilitate assembly and to improve the spring properties of the sealing ring 34 and thus also to improve the sealing properties, the sealing ring 34, as already mentioned above, has an overlap area in which the ends 35 of the sealing ring 34 interlock.
- the overlap is achieved by an axial detent.
- cutouts 42 are punched out at its ends, which cut the axial height of the sealing ring 34 in half, for example.
- one end 35 is then inserted into the opposite recess 42, so that a step-shaped axial detent is achieved.
- the advantage of the constant thickness of the material can be achieved compared to a complete overlap of the ends 35, which would be achieved by sliding over one another.
- the ends 35 of the sealing ring 34 engage in a variable size due to the circumferential length of the cutouts 42. In this way, sealing rings 34 of the same size can be used in receiving holes 37 of different sizes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10109407 | 2001-02-28 | ||
DE10109407A DE10109407A1 (de) | 2001-02-28 | 2001-02-28 | Brennstoffeinspritzventil |
PCT/DE2002/000694 WO2002068814A1 (de) | 2001-02-28 | 2002-02-27 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1366286A1 true EP1366286A1 (de) | 2003-12-03 |
EP1366286B1 EP1366286B1 (de) | 2005-12-21 |
Family
ID=7675650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02721981A Expired - Lifetime EP1366286B1 (de) | 2001-02-28 | 2002-02-27 | Brennstoffeinspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US6921033B2 (de) |
EP (1) | EP1366286B1 (de) |
JP (1) | JP2004518862A (de) |
CN (1) | CN1457392A (de) |
CZ (1) | CZ20023491A3 (de) |
DE (2) | DE10109407A1 (de) |
WO (1) | WO2002068814A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10321163B4 (de) * | 2003-05-12 | 2017-01-05 | Robert Bosch Gmbh | Verfahren zum Anbringen eines metallischen Dichtelements an einem Grundkörper eines Brennstoffeinspritzventils, sowie Brennstoffeinspritzventil |
DE10337892A1 (de) | 2003-08-18 | 2005-03-17 | Daimlerchrysler Ag | Brennstoffeinspritzventil |
DE10358913A1 (de) | 2003-12-16 | 2005-09-01 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102005006818A1 (de) * | 2005-02-15 | 2006-08-17 | Volkswagen Mechatronic Gmbh & Co. Kg | Dichtungseinrichtung für einen Kraftstoffinjektor sowie Verfahren zum Abdichten |
US7513242B2 (en) * | 2007-05-03 | 2009-04-07 | Cummins Inc. | Fuel injector assembly with injector seal retention |
DE102007029152A1 (de) * | 2007-06-25 | 2009-01-08 | Robert Bosch Gmbh | Scheibenwischerantrieb |
JP2009191672A (ja) * | 2008-02-13 | 2009-08-27 | Mitsubishi Heavy Ind Ltd | 燃料噴射弁装置 |
US7942132B2 (en) * | 2008-07-17 | 2011-05-17 | Robert Bosch Gmbh | In-line noise filtering device for fuel system |
DE102009000285A1 (de) * | 2009-01-19 | 2010-07-22 | Robert Bosch Gmbh | Kraftstoff-Injektor sowie Brennkraftmaschine mit Kraftstoff-Injektor |
DE102012202254A1 (de) * | 2012-02-15 | 2013-08-22 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
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 |
US9410520B2 (en) * | 2013-08-08 | 2016-08-09 | Cummins Inc. | Internal combustion engine including an injector combustion seal positioned between a fuel injector and an engine body |
US10036355B2 (en) | 2013-08-08 | 2018-07-31 | Cummins Inc. | Heat transferring fuel injector combustion seal with load bearing capability |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1392536A (en) * | 1919-04-05 | 1921-10-04 | C A Cooper | Piston-ring |
US1495909A (en) | 1922-08-26 | 1924-05-27 | Anton M Kroczek | Piston ring |
US3097855A (en) * | 1959-06-26 | 1963-07-16 | George H Allen | Sealing arrangement |
US3655208A (en) * | 1970-04-13 | 1972-04-11 | Mc Donnell Douglas Corp | Split piston ring and method of manufacture |
US4528959A (en) * | 1984-01-23 | 1985-07-16 | Deere & Company | Seal for an internal combustion engine |
US4713867A (en) * | 1985-04-15 | 1987-12-22 | Duke Fox | Piston rings with a gap seal |
US5247918A (en) * | 1992-09-17 | 1993-09-28 | Siemens Automotive L.P. | Sealing a direct injection fuel injector to a combustion chamber |
US5289627A (en) * | 1992-12-18 | 1994-03-01 | Chrysler Corporation | Fuel injector assembly and calibration method |
JP3324887B2 (ja) * | 1994-11-08 | 2002-09-17 | 本田技研工業株式会社 | 油圧シール装置 |
JPH08200182A (ja) | 1995-01-25 | 1996-08-06 | Zexel Corp | 電磁式燃料噴射弁およびその取付け構造 |
JPH09112697A (ja) | 1995-10-17 | 1997-05-02 | Mitsubishi Electric Corp | シールリング |
US5779243A (en) * | 1996-11-21 | 1998-07-14 | Delaware Capital Formation, Inc. | Piston ring set for reciprocating engines |
FR2762051B1 (fr) * | 1997-04-10 | 1999-05-21 | Peugeot | Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne |
DE19739150A1 (de) * | 1997-09-06 | 1999-03-11 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JPH11210886A (ja) * | 1998-01-23 | 1999-08-03 | Nok Corp | ガスケット |
DE19808068A1 (de) * | 1998-02-26 | 1999-09-02 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
2001
- 2001-02-28 DE DE10109407A patent/DE10109407A1/de not_active Withdrawn
-
2002
- 2002-02-27 DE DE50205341T patent/DE50205341D1/de not_active Expired - Lifetime
- 2002-02-27 US US10/275,024 patent/US6921033B2/en not_active Expired - Fee Related
- 2002-02-27 WO PCT/DE2002/000694 patent/WO2002068814A1/de active IP Right Grant
- 2002-02-27 EP EP02721981A patent/EP1366286B1/de not_active Expired - Lifetime
- 2002-02-27 JP JP2002567694A patent/JP2004518862A/ja not_active Withdrawn
- 2002-02-27 CN CN02800450A patent/CN1457392A/zh active Pending
- 2002-02-27 CZ CZ20023491A patent/CZ20023491A3/cs unknown
Non-Patent Citations (1)
Title |
---|
See references of WO02068814A1 * |
Also Published As
Publication number | Publication date |
---|---|
CZ20023491A3 (en) | 2004-05-12 |
DE10109407A1 (de) | 2002-09-05 |
US20030155446A1 (en) | 2003-08-21 |
WO2002068814A1 (de) | 2002-09-06 |
EP1366286B1 (de) | 2005-12-21 |
US6921033B2 (en) | 2005-07-26 |
DE50205341D1 (de) | 2006-01-26 |
CN1457392A (zh) | 2003-11-19 |
JP2004518862A (ja) | 2004-06-24 |
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