WO2005083262A1 - Stützelement - Google Patents
Stützelement Download PDFInfo
- Publication number
- WO2005083262A1 WO2005083262A1 PCT/EP2005/050722 EP2005050722W WO2005083262A1 WO 2005083262 A1 WO2005083262 A1 WO 2005083262A1 EP 2005050722 W EP2005050722 W EP 2005050722W WO 2005083262 A1 WO2005083262 A1 WO 2005083262A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support element
- bracket
- element according
- fuel
- fuel injector
- Prior art date
Links
- 239000000446 fuel Substances 0.000 claims abstract description 87
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims 1
- 210000002105 tongue Anatomy 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
-
- 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 is based on a support element for holding down a fuel injector used in a cylinder head of an internal combustion engine according to the preamble of the main claim.
- a disadvantage of the fastening device known from DE 29 26 490 AI is, in particular, the bracing effect of the various mounting parts on the fuel injector.
- the force flow generated in the fuel injector leads to deformations and thus to changes in the stroke of the valve needle up to jamming and to a pressure or bending load on the housing parts, which are generally thin-walled and welded to one another at several points.
- each fastening measure leads, for example, to an increase in the radial expansion of the fuel injection valve, and thus to an increased space requirement during installation, due to a support collar.
- the support element according to the invention for a fuel injection valve with the characterizing features of the main claim has the advantage that the fuel distributor is supported on the fuel injection valve without radial force via the support element according to the invention and thus tension and subsequent damage to the fuel injection valve and the connection of the fuel distribution line are eliminated.
- the support element ensures through a correspondingly designed bracket, which is penetrated by the fuel injection valve through a recess, and tabs both for transferring the hold-down force of the fuel distributor to the fuel injection valve and for a flexible fixation that compensates for tolerances and offsets.
- the support element can be produced in a simple manner by stamping and bending from sheet metal. Manufacturing by deep drawing and punching is also possible.
- screws or clamping claws for fastening the fuel injection valve to the end face of the cylinder head are advantageously omitted.
- the contact surfaces on the fuel distributor and / or the fuel injector are made flat.
- the flexible support of the fuel distributor can be further improved without additional manufacturing effort by the formation of a further elastic bracket symmetrical to the first bracket.
- FIG. 1 shows an example of a previously common support element for a fuel injector
- FIG. 2 shows a schematic perspective view of a first exemplary embodiment of a support element designed according to the invention
- FIG. 3 shows a schematic bottom view of the first exemplary embodiment of a support element designed according to the invention in the assembled state shown in FIG. 2,
- FIG. 4 shows a schematic perspective view of a fuel injection valve with an assembled support element according to FIG. 5 shows a schematic perspective view of a second exemplary embodiment of a support element designed according to the invention.
- FIG. 6 shows a schematic perspective view of a fuel injection valve with an assembled support element according to FIG. 5 configured according to the invention.
- FIG. 1 shows a schematic view of a previous example of a support element 3 to clarify the measures according to the invention.
- the support element 3 is used to fix a fuel injector (not shown in FIG. 1) in a cylinder head of an internal combustion engine and to connect the fuel injector to a fuel distributor.
- the fuel injector is e.g. B. executed as a high-pressure injection valve of a mixture-compressing, spark-ignition internal combustion engine.
- the support element 3 In order to space the fuel injector and the fuel distributor without radial force, the support element 3 must have elasticity and stability at the same time. It consists of a bracket 8, which is supported on the one hand on a shoulder of the fuel injector and on the other hand on a shoulder of the fuel distributor. The bracket 8 is slotted in the area of an electrical connection of the fuel injector in order to facilitate assembly.
- bracket 8 With the bracket 8 are two tabs 4 and two brackets 5 in connection and ensure resilient bracing of the fuel distributor against the fuel injector.
- the tabs 4 are responsible for a radial clamping effect on the fuel distributor and the bracket 5 for the axial elasticity and the compensation of offsets.
- the example shown is designed so that support the tabs 4 on the fuel rail while the brackets 5 rest on the fuel injector.
- the support element 3 is designed in the form of a stamped and bent part and has a very complex shape in order to be able to meet all requirements in terms of elasticity and stability. Furthermore, it should be noted that the contact surfaces on the fuel distributor and on the fuel injector are relatively small due to the shape of the brackets 5 and the tabs 4 and thus only small surfaces are available for the application of force. In addition, the support element 3 has a cross section which in some areas projects beyond the outer contour of the fuel injector, which is problematic in the cramped installation conditions in the cylinder head of the internal combustion engine.
- FIG. 2 shows a schematic, perspective illustration of an exemplary embodiment of a support element 3 designed according to the invention.
- the support element 3 in turn consists of a bracket 8 which is attached to the fuel injector.
- the bracket 8 is slotted. Instead of the two brackets 5 described in FIG. 1, only one bracket 5 is provided, which is penetrated by the fuel injection valve 1, as can be seen from FIG. 4.
- the bracket 5 is due to its curved shape and its approach 6 on the bracket 8 plastically and elastically deformable under axial load, whereby an axial force in the fuel injector 1 can be initiated.
- the shape is first produced by stamping from sheet metal and then brought into shape by rolling and bending.
- the bracket 5 is bent radially inward so that the fuel injector 1 can be inserted through a recess 11 of the bracket 5 during assembly.
- the contact surfaces on the fuel distributor 2 and on the fuel injection valve 1, as can be seen in FIGS. 2 and 4, are substantially larger than in the support element 3 described in FIG. 1, since for the system on
- the bracket 5 also has a larger contact surface for supporting the
- Fuel distributor 2 since the contact surface is actually two-dimensional and not only almost edge-shaped and limited to the thickness of the punched sheet as in the support element shown in FIG. 1.
- Fig. 3 shows a bottom view of the embodiment of the invention designed according to the support member 3 in • mounted on the fuel injection valve 1 position.
- Fuel distributor 2 protrudes. Only the tabs 4 and a small part of corners 10 of the bracket 8 are visible. The cramped conditions in the assembly of the fuel injection valves 1 in the cylinder head of the internal combustion engine are not additionally worsened in this way.
- FIG. 5 shows a perspective view of a second exemplary embodiment of a support element 3 designed according to the invention.
- the second exemplary embodiment has a further bracket 12 which is mirror-symmetrical to the bracket 5 on the support element 3. While only one of the fuel injector 1 or fuel distributor 2 components is elastically supported in the first exemplary embodiment of a support element 3 designed according to the invention in FIGS. 2 to 4, both components are elastically supported against one another in the present second exemplary embodiment, thereby further promoting the flexibility of the support ,
- the brackets 5 and 12 can, as shown in FIG. 5, both be open, but it is also conceivable to design the bracket 5 in a closed form as in FIGS. 2 to 4 and the bracket 12 in an open form or vice versa.
- the production of the support element 3 equipped with two brackets 5 and 12 is just as easy and inexpensive as the production of the support element 3 according to FIGS. 2 to 4, since the process steps of punching and bending remain the same.
- FIG. 6 shows a schematic perspective illustration of a support element 3 mounted between a fuel injection valve 1 and a fuel distributor according to the second embodiment shown in FIG. 5.
- the bracket 5 lie on the fuel distributor 2 and the bracket 12 on the fuel injector 1. Compressive forces that are exerted on the fuel injector 1 via the fuel distributor 2 can be compensated very effectively by a support element 3 designed in this way.
- the invention is not limited to the exemplary embodiments shown and can also be used, for example, for fuel injection valves 1 for injection into the combustion chamber of a self-igniting internal combustion engine.
- the support element 3 shown in the figures can also be mounted in the reverse installation position, so that the bracket 5 is supported on the fuel injector 1 instead of on the fuel distributor 2. All features of the invention can be combined with one another as desired.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006552636A JP4746565B2 (ja) | 2004-02-26 | 2005-02-18 | 支持エレメント |
EP05716739A EP1721074A1 (de) | 2004-02-26 | 2005-02-18 | Stutzelement |
US10/590,987 US7373926B2 (en) | 2004-02-26 | 2005-02-18 | Support element |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004009322.9 | 2004-02-26 | ||
DE102004009322 | 2004-02-26 | ||
DE102004047035.9A DE102004047035B4 (de) | 2004-02-26 | 2004-09-28 | Stützelement |
DE102004047035.9 | 2004-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005083262A1 true WO2005083262A1 (de) | 2005-09-09 |
Family
ID=34913334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/050722 WO2005083262A1 (de) | 2004-02-26 | 2005-02-18 | Stützelement |
Country Status (3)
Country | Link |
---|---|
US (1) | US7373926B2 (de) |
EP (1) | EP1721074A1 (de) |
WO (1) | WO2005083262A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006037726A2 (de) * | 2004-10-01 | 2006-04-13 | Robert Bosch Gmbh | Niederhalter für eine brennstoffeinspritzvorrichtung und brennstoffeinspritzvorrichtung |
WO2009144069A1 (de) * | 2008-05-30 | 2009-12-03 | Robert Bosch Gmbh | Niederhalter für eine brennstoffeinspritzvorrichtung |
CN103807072A (zh) * | 2012-11-05 | 2014-05-21 | 株式会社京浜 | 燃料喷射阀的支承结构 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10256668A1 (de) * | 2002-12-04 | 2004-07-29 | Robert Bosch Gmbh | Stützelement |
DE10359299A1 (de) * | 2003-12-17 | 2005-08-25 | Robert Bosch Gmbh | Stützelement |
DE502006006106D1 (de) * | 2005-03-03 | 2010-03-25 | Bosch Gmbh Robert | Brennstoffeinspritzvorrichtung |
US8646434B2 (en) | 2010-08-09 | 2014-02-11 | Hitachi Automotive Systems Americas Inc. | Anti-rotation clip for a twist lock fuel injector |
US8813722B2 (en) | 2010-08-09 | 2014-08-26 | Hitachi Automotive Products (Usa) | Fuel injector holder |
DE102010034411B4 (de) | 2010-08-14 | 2018-10-11 | Audi Ag | Brennkraftmaschine mit Einspritzventil |
EP2753820B1 (de) * | 2011-09-08 | 2016-10-19 | Continental Automotive GmbH | Kraftstoffeinspritzanordnung |
DE112012004986T5 (de) * | 2011-11-29 | 2014-08-28 | Piolax Inc. | Anbringungsvorrichtung |
JP5822271B2 (ja) * | 2012-02-27 | 2015-11-24 | 株式会社ケーヒン | 燃料噴射弁の支持構造 |
JP5822272B2 (ja) * | 2012-02-27 | 2015-11-24 | 株式会社ケーヒン | 燃料噴射弁の支持構造 |
KR20150006854A (ko) * | 2012-05-08 | 2015-01-19 | 콘티넨탈 오토모티브 게엠베하 | 커플링 장치 및 연료 분사기 조립체 |
KR101768395B1 (ko) | 2016-10-21 | 2017-08-14 | 주식회사 현대케피코 | 인젝터 클립 |
KR101938481B1 (ko) * | 2017-06-23 | 2019-01-14 | 주식회사 현대케피코 | 인젝터용 클립 |
DE102020202949A1 (de) * | 2020-03-09 | 2021-09-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Brennstoffeinspritzvorrichtung |
WO2023069526A1 (en) * | 2021-10-19 | 2023-04-27 | Stanadyne Llc | Axisymmetric injector hold-down load ring |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2926490A1 (de) | 1979-06-30 | 1981-02-05 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage |
US5970953A (en) * | 1999-01-12 | 1999-10-26 | Siemens Automotive Corporation | High pressure injector clip |
US6276339B1 (en) * | 2000-05-02 | 2001-08-21 | Delphi Technologies, Inc. | Fuel injector spring clip assembly |
DE10163030A1 (de) * | 2001-12-20 | 2003-07-03 | Bosch Gmbh Robert | Befestigungsvorrichtung |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2908095C2 (de) * | 1979-03-02 | 1984-02-16 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage für Brennkraftmaschinen |
DE3918410A1 (de) * | 1989-06-06 | 1990-12-13 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen |
US4984548A (en) * | 1989-11-20 | 1991-01-15 | Sharon Manufacturing Company | Fuel injector retainer clip |
DE4017875C2 (de) * | 1990-06-02 | 1999-02-04 | Bosch Gmbh Robert | Brennstoffeinspritzeinrichtung für Brennkraftmaschinen |
US5501195A (en) * | 1994-09-16 | 1996-03-26 | Siemens Automotive Corporation | Retainer arrangement for a bottom feed fuel injector |
JP3765336B2 (ja) * | 1996-10-15 | 2006-04-12 | 株式会社デンソー | 燃料供給装置およびその製造方法 |
US5803052A (en) * | 1997-06-27 | 1998-09-08 | Siemens Automotive Corporation | Spring clip for retaining a fuel injector in a fuel rail cup |
JPH11351106A (ja) * | 1998-06-05 | 1999-12-21 | Honda Motor Co Ltd | 燃料噴射弁の取付け構造 |
US6748925B1 (en) * | 2000-10-30 | 2004-06-15 | Siemens Automotive Corporation | Injector and fuel rail assembly for installation on an integrated fuel rail |
DE10108467A1 (de) * | 2001-02-22 | 2002-09-05 | Bosch Gmbh Robert | Befestigungsvorrichtung |
DE10112665A1 (de) * | 2001-03-16 | 2002-09-19 | Bosch Gmbh Robert | Befestigungsvorrichtung |
DE10213585A1 (de) * | 2001-03-27 | 2002-10-02 | Denso Corp | Kraftstoffzufuhrvorrichtung mit einem Herausrutschverhinderungselement |
DE10133264A1 (de) * | 2001-07-09 | 2003-02-06 | Bosch Gmbh Robert | Befestigungsvorrichtung |
DE10256668A1 (de) * | 2002-12-04 | 2004-07-29 | Robert Bosch Gmbh | Stützelement |
DE102004015042A1 (de) * | 2004-03-26 | 2005-10-13 | Robert Bosch Gmbh | Stützelement |
-
2005
- 2005-02-18 EP EP05716739A patent/EP1721074A1/de not_active Withdrawn
- 2005-02-18 WO PCT/EP2005/050722 patent/WO2005083262A1/de active Application Filing
- 2005-02-18 US US10/590,987 patent/US7373926B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2926490A1 (de) | 1979-06-30 | 1981-02-05 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage |
US5970953A (en) * | 1999-01-12 | 1999-10-26 | Siemens Automotive Corporation | High pressure injector clip |
US6276339B1 (en) * | 2000-05-02 | 2001-08-21 | Delphi Technologies, Inc. | Fuel injector spring clip assembly |
DE10163030A1 (de) * | 2001-12-20 | 2003-07-03 | Bosch Gmbh Robert | Befestigungsvorrichtung |
Non-Patent Citations (1)
Title |
---|
See also references of EP1721074A1 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006037726A2 (de) * | 2004-10-01 | 2006-04-13 | Robert Bosch Gmbh | Niederhalter für eine brennstoffeinspritzvorrichtung und brennstoffeinspritzvorrichtung |
WO2006037726A3 (de) * | 2004-10-01 | 2006-06-22 | Bosch Gmbh Robert | Niederhalter für eine brennstoffeinspritzvorrichtung und brennstoffeinspritzvorrichtung |
EP1953381A1 (de) * | 2004-10-01 | 2008-08-06 | Robert Bosch Gmbh | Niederhalter für eine Brennstoffeinspritzvorrichtung |
US7802559B2 (en) | 2004-10-01 | 2010-09-28 | Robert Bosch Gmbh | Hold-down device for a fuel injection device, and fuel injection device |
WO2009144069A1 (de) * | 2008-05-30 | 2009-12-03 | Robert Bosch Gmbh | Niederhalter für eine brennstoffeinspritzvorrichtung |
US8707930B2 (en) | 2008-05-30 | 2014-04-29 | Robert Bosch Gmbh | Hold-down device for a fuel injection device |
KR101562838B1 (ko) | 2008-05-30 | 2015-10-23 | 로베르트 보쉬 게엠베하 | 연료 분사 장치용 홀드-다운 부재 |
CN103807072A (zh) * | 2012-11-05 | 2014-05-21 | 株式会社京浜 | 燃料喷射阀的支承结构 |
Also Published As
Publication number | Publication date |
---|---|
EP1721074A1 (de) | 2006-11-15 |
US7373926B2 (en) | 2008-05-20 |
US20070175450A1 (en) | 2007-08-02 |
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