EP1440235A1 - Befestigungsvorrichtung - Google Patents
BefestigungsvorrichtungInfo
- Publication number
- EP1440235A1 EP1440235A1 EP02774435A EP02774435A EP1440235A1 EP 1440235 A1 EP1440235 A1 EP 1440235A1 EP 02774435 A EP02774435 A EP 02774435A EP 02774435 A EP02774435 A EP 02774435A EP 1440235 A1 EP1440235 A1 EP 1440235A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fastening device
- fuel
- spring
- spring tongues
- injection valve
- 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
- F02M61/16—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
- 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
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- 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
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips
-
- 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 fastening device for fastening a fuel injector to a cylinder head of an internal combustion engine and for connecting the fuel injector to a fuel rail according to the type of the main claim.
- the axial play between the recesses and the securing clip and between the annular groove and the securing clip should be kept small in order to achieve an exact fixation of the fuel injector without tensioning the seal.
- a disadvantage of the fastening device known from DE 29 26 490 C2 is that hold-down forces can only be transmitted to a limited extent. In particular, it is not possible to achieve a relatively uniform hold-down force over a certain axial length in order to compensate for position tolerances.
- the prior art described is intended for an intake manifold injection system and therefore does not offer a solution as to how position tolerances in high-pressure fuel distributor lines can be compensated for.
- Fastening device for a fuel injector with the characterizing features of the main claim has the advantage that position tolerances between the fuel injector and fuel rail, in particular axial position tolerances, can be compensated by the spring elements are further axially tensioned.
- the fuel injection valve is held down in the cylinder head with a hold-down force by the spring elements when the fuel rail is fastened to the cylinder head and is pressed towards the cylinder head.
- the spring elements are tensioned from their rest position by axial pressure and exert this pressure on the fuel injector as a hold-down force.
- the fuel injector can already be connected to the fuel distributor line by the fastening device during assembly and the unit comprising the fastening device, fuel injector and fuel distributor line can be completely removed during each disassembly.
- the spring elements are loaded under tension and the fastening device can pull the fuel injector out of the cylinder head because the locking connections, as well as the spring tongues in the retaining groove, transmit forces to pressure and tension.
- screws or clamping claws for fastening to the end face of the cylinder head are advantageously omitted.
- latching connections are formed by recesses in a section of the spring elements into which latches of the fuel injector or the fuel distributor line can be inserted. This design can snap into place due to the radial elasticity of the spring elements and does not require any further components.
- the spring elements can be folded radially outward.
- the spring constants can be influenced both under pressure and under tension.
- the fastening device can consist of plastic injection molding.
- the fastening device is made of spring sheet metal and as a stamped part with subsequent shaping.
- the spring tongues on their side facing the retaining groove can be bent axially at least in a partial area to such an extent that a play-free, axially resilient jamming occurs when inserted into the retaining groove.
- the retaining groove on the fuel injection valve and the latching connection on the fuel distributor line are formed. Fastening in the holding groove requires the lower overall height and is therefore cheap to attach to the fuel injector.
- Fig. 1 is a perspective view of embodiments' of a fastening device according to the invention
- FIG. 2 shows a schematic, sectional view of the exemplary embodiment of FIG. 1 in the installed position on a fuel injection valve and a fuel distributor line
- FIG. 1 shows a perspective view of an exemplary embodiment of a fastening device 1 according to the invention for a fuel injection valve for fastening to a fuel distributor line.
- a fastening device 1 for a fuel injection valve for fastening to a fuel distributor line.
- two spring tongues 2 are formed, which have an opening area between them with a Leave the maximum diameter d2 free. This opening area is oriented perpendicular to an imaginary axis 3, which is identical to an axis of symmetry of the fuel injector, which is not shown here.
- the spring tongues 2 have a tip distance dl that is smaller than the distance d2.
- the spring tongues 2 can be attached to the fuel injector via the spring tongues 2, which can be inserted into a holding groove. It is possible to slide the fastening device 1 laterally. A non-positive connection then exists in the longitudinal direction of axis 3.
- the spring tongues 2 are followed by two spring elements 4, which can spring in the direction of the axis 3 both on pressure and on train.
- Fig. 1 the fastening device is shown in the unloaded state, in which no force acts on the spring elements 4.
- Recesses 6 are arranged in contact sections 5 of the spring elements 4, in which, for example, the fuel distribution line can snap in with corresponding catches. This enables a non-positive connection in the longitudinal direction of axis 3 with the fuel distribution line.
- the spring elements 4 have a fold area 7 radially with respect to the axis 3, the folds of which are rather sharp-edged in the present example.
- the spring tongues 2 are slightly bent in an edge region 8.
- the spring elements 4 both have a spring constant for a force which is the distance between the recesses 6 and the spring tongues
- FIG. 2 shows a schematic, sectional view of the exemplary embodiment of FIG. 1 in the installed position for a fuel injection valve 9, fastened to a fuel distributor line 10.
- the fuel injection valve 9 is inserted with an end section 11 into a receiving bore 12 in the fuel distributor line 10.
- the fuel runs into the receiving bore 12 via a bore 15.
- the fastening device 1 is clipped with its recesses 6 into catches 16 on the fuel distributor line 10.
- the fastening device is shown cut in the sectional plane of the plane defined by line 2 and axis 3 in FIG. 1.
- the spring tongues 2 with the edge area 8, which is slightly bent, are inserted into the holding groove 17, which is formed on the fuel injection valve 9.
- the respective folding area 7 of the two spring elements 4 is located radially outward. The parts of the spring elements 4 before and after the folding area 7 are no longer parallel here, since the fuel distributor line 10 exerts a compressive force in the direction of the flow of fuel on the fuel injection valve 9, which is caused by the fastening device 1 is transferred from the catches 16 to the holding groove 17.
- This holding force is the holding-down force required to hold the fuel injector securely against the pressure of a combustion chamber on a cylinder head (not shown here). Due to the bending in the edge area 8, play of the spring tongues 2 in the holding groove 17 is prevented, since there is jamming.
- the fuel injection valve 9 can be disassembled together with the fuel distributor line 10. If the fuel distributor line 10 is pulled in the opposite direction to the flow direction of the fuel in the inlet bore 15, then each spring element 4 is pulled past its point of rest and no longer exerts any compressive force on the fuel injection valve 9. Rather, a tensile force on the holding groove 17 on "that Transfer fuel injector 9 and the fuel injector 9 from one. Cylinder head pulled away. It can thus be dismantled together with the fuel rail 10.
- the fuel distribution line 10 can also be disassembled by first removing the fastening device 1. This can be done by stretching the contact areas 5 of the spring elements 4 so far radially outwards that they can be removed from the catches 16. At the same time, the fastening device as a whole, here towards the viewer towards the front, can be pulled out of the holding groove 17 by spreading the spring tongues 2 far enough that the distance d1 in FIG. 1 is large enough to be about the diameter the holding groove 17 to be pulled into its bottom.
- this fastening device 1 By punching the fastening device 1 out of spring sheet metal and subsequent shaping, this fastening device 1 can be easily manufactured and, by selecting suitable materials, large holding-down forces can also be transmitted. In this way, otherwise necessary components, such as a fastening claw and screwing means, can be avoided.
- FIG. 3a, 3b and 3c show, in schematic detail sections, further embodiments of the fastening device 1 according to the invention in FIG. 1 and FIG. 2 with different folding areas compared to the folding area 7 in FIGS. 1 and 2.
- the fastening device 1 is in each case only shown for one side due to the symmetry.
- the folding area 18a in FIG. 3a is designed as a round arch. This prevents a notch effect in the area of the spring element 4.
- the bending moment over the round arch 18a is relatively even.
- 3b shows an example of an acute-angled folding area 18b.
- 3c finally shows a multiple overlay 18c in the area of the spring elements 4.
- the last two exemplary embodiments mentioned allow a relatively low spring constant.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10152421A DE10152421A1 (de) | 2001-10-24 | 2001-10-24 | Befestigungsvorrichtung |
DE10152421 | 2001-10-24 | ||
PCT/DE2002/003715 WO2003038267A1 (de) | 2001-10-24 | 2002-10-01 | Befestigungsvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1440235A1 true EP1440235A1 (de) | 2004-07-28 |
EP1440235B1 EP1440235B1 (de) | 2008-02-13 |
Family
ID=7703533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02774435A Expired - Lifetime EP1440235B1 (de) | 2001-10-24 | 2002-10-01 | Befestigungsvorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US7063075B2 (de) |
EP (1) | EP1440235B1 (de) |
JP (1) | JP4280632B2 (de) |
CN (1) | CN1312394C (de) |
AT (1) | ATE386207T1 (de) |
DE (2) | DE10152421A1 (de) |
WO (1) | WO2003038267A1 (de) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10239142A1 (de) * | 2002-08-27 | 2004-04-29 | Daimlerchrysler Ag | Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine |
DE10256668A1 (de) | 2002-12-04 | 2004-07-29 | Robert Bosch Gmbh | Stützelement |
DE10338715B4 (de) * | 2003-08-22 | 2014-07-17 | Robert Bosch Gmbh | Ausgleichselement für ein Brennstoffeinspritzventil |
DE10358912A1 (de) * | 2003-12-16 | 2005-09-08 | Robert Bosch Gmbh | Brennstoffeinspritzsystem |
DE10359299A1 (de) * | 2003-12-17 | 2005-08-25 | Robert Bosch Gmbh | Stützelement |
JP4634765B2 (ja) * | 2004-09-16 | 2011-02-16 | 日産自動車株式会社 | 燃料噴射弁取付構造 |
DE102004048401A1 (de) * | 2004-10-01 | 2006-04-06 | Robert Bosch Gmbh | Niederhalter für eine Brennstoffeinspritzvorrichtung und Brennstoffeinspritzvorrichtung |
DE102004055317A1 (de) | 2004-11-16 | 2006-05-24 | Bosch Rexroth Aktiengesellschaft | Elektrische Drehfeldmaschine und Primärteil |
EP2189650B1 (de) * | 2005-03-03 | 2012-10-17 | Robert Bosch GmbH | Brennstoffeinspritzvorrichtung |
US20060232061A1 (en) * | 2005-04-15 | 2006-10-19 | Yasushi Fujiwara | Clamp device |
EP1892408B1 (de) * | 2006-08-21 | 2009-10-21 | Continental Automotive GmbH | Injektor, Kraftstoffzulaufbecher sowie Halter |
JP4558021B2 (ja) * | 2007-09-06 | 2010-10-06 | 日立オートモティブシステムズ株式会社 | 燃料噴射弁およびその支持方法 |
DE602008004621D1 (de) * | 2008-02-19 | 2011-03-03 | Continental Automotive Gmbh | Kupplungsvorrichtung |
DE602008004620D1 (de) * | 2008-02-19 | 2011-03-03 | Continental Automotive Gmbh | Kupplungsvorrichtung |
DE602008004428D1 (de) * | 2008-02-19 | 2011-02-24 | Continental Automotive Gmbh | Kupplungsvorrichtung |
EP2093414B1 (de) * | 2008-02-19 | 2011-07-20 | Continental Automotive GmbH | Kupplungsvorrichtung |
DE102008002122A1 (de) * | 2008-05-30 | 2009-12-03 | Robert Bosch Gmbh | Niederhalter für eine Brennstoffeinspritzvorrichtung |
EP2208883B1 (de) * | 2009-01-19 | 2015-07-22 | Continental Automotive GmbH | Kupplungsvorrichtung |
EP2388469B1 (de) | 2010-05-18 | 2013-03-13 | Continental Automotive GmbH | Kraftstoffkappe |
US8469003B2 (en) * | 2010-09-10 | 2013-06-25 | Burgess • Norton Mfg. Co., Inc. | Fuel injector clamp |
DE102011002996A1 (de) | 2011-01-21 | 2012-07-26 | Robert Bosch Gmbh | Kraftstoffeinspritzventil mit verbessertem Hochdruckanschluss |
KR101199642B1 (ko) * | 2011-02-25 | 2012-11-08 | 주식회사 케피코 | 차량용 연료레일의 연료분사기 고정구조 |
JP5270714B2 (ja) * | 2011-04-27 | 2013-08-21 | トヨタ自動車株式会社 | 燃料噴射弁用制振インシュレータ |
DE102011075057A1 (de) * | 2011-05-02 | 2012-11-08 | Robert Bosch Gmbh | Brennstoffverteiler und System mit einem Brennstoffeinspritzventil |
DE102011082743A1 (de) * | 2011-09-15 | 2013-03-21 | Robert Bosch Gmbh | Brennstoffverteiler |
DE102011084704A1 (de) * | 2011-10-18 | 2013-04-18 | Robert Bosch Gmbh | Ausrichtelement für ein Einspritzventil sowie Verfahren zur Herstellung eines Einspritzventils |
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 |
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 |
DE102012221134A1 (de) * | 2012-11-20 | 2014-05-22 | Robert Bosch Gmbh | Anordnung für eine Brennstoffeinspritzanlage mit einem Brennstoffeinspritzventil und einem Entkoppelelement |
EP2832986B1 (de) | 2013-07-31 | 2016-05-25 | Continental Automotive GmbH | Brennstoffeinspritzvorrichtung für einen Verbrennungsmotor |
EP2860388B1 (de) * | 2013-10-10 | 2017-07-26 | Continental Automotive GmbH | Brennstoffeinspritzvorrichtung für einen Verbrennungsmotor |
CN104265535B (zh) * | 2014-10-13 | 2016-07-06 | 浙江新柴股份有限公司 | 一种柴油机上喷油器安装的定位装置 |
KR101739694B1 (ko) * | 2016-06-13 | 2017-05-24 | 주식회사 현대케피코 | 인젝터 클립 |
EP3279463A1 (de) * | 2016-08-04 | 2018-02-07 | Continental Automotive GmbH | Kraftstoffeinspritzanordnung für einen verbrennungsmotor |
DE102018218711A1 (de) | 2018-10-31 | 2020-04-30 | Robert Bosch Gmbh | Niederhalter für eine Brennstoffeinspritzvorrichtung |
US11174825B2 (en) * | 2019-02-11 | 2021-11-16 | Caterpillar Inc. | Seal configuration for fuel injector |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3918410A (en) * | 1974-06-19 | 1975-11-11 | Handelsbolaget Broderna Backma | Boiler for heating of water and generating of steam |
JPS5126530A (de) * | 1974-08-29 | 1976-03-04 | Canon Kk | |
DE2926490A1 (de) | 1979-06-30 | 1981-02-05 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage |
DE3918410A1 (de) * | 1989-06-06 | 1990-12-13 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen |
US5074269A (en) * | 1991-04-29 | 1991-12-24 | Chrysler Corporation | Anti-rotation fuel injector clip |
US5501195A (en) * | 1994-09-16 | 1996-03-26 | Siemens Automotive Corporation | Retainer arrangement for a bottom feed fuel injector |
DE19536441A1 (de) * | 1995-09-29 | 1997-04-03 | Saab Automobile | Federklammer zur Verbindung einer Einspritzdüse mit einer Einspritzleitung |
US5577478A (en) * | 1995-11-03 | 1996-11-26 | Walbro Corporation | Integrated fuel pressure regulator and rail assembly |
DE19735665A1 (de) * | 1997-06-25 | 1999-01-07 | Bosch Gmbh Robert | Brennstoffeinspritzanlage |
US5803052A (en) * | 1997-06-27 | 1998-09-08 | Siemens Automotive Corporation | Spring clip for retaining a fuel injector in a fuel rail cup |
US5901688A (en) * | 1997-09-12 | 1999-05-11 | Siemens Canada Limited | Automotive emission control valve mounting |
US6019089A (en) * | 1998-10-14 | 2000-02-01 | Ford Motor Company | Arrangement for orienting a fuel injector to a fuel manifold cup |
US6276339B1 (en) * | 2000-05-02 | 2001-08-21 | Delphi Technologies, Inc. | Fuel injector spring clip assembly |
US6481420B2 (en) * | 2001-01-30 | 2002-11-19 | Visteon Global Technologies, Inc. | Method and apparatus for maintaining the alignment of a fuel injector |
-
2001
- 2001-10-24 DE DE10152421A patent/DE10152421A1/de not_active Withdrawn
-
2002
- 2002-10-01 WO PCT/DE2002/003715 patent/WO2003038267A1/de active IP Right Grant
- 2002-10-01 AT AT02774435T patent/ATE386207T1/de not_active IP Right Cessation
- 2002-10-01 EP EP02774435A patent/EP1440235B1/de not_active Expired - Lifetime
- 2002-10-01 JP JP2003540514A patent/JP4280632B2/ja not_active Expired - Fee Related
- 2002-10-01 DE DE50211699T patent/DE50211699D1/de not_active Expired - Lifetime
- 2002-10-01 US US10/451,874 patent/US7063075B2/en not_active Expired - Fee Related
- 2002-10-01 CN CNB028032411A patent/CN1312394C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03038267A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7063075B2 (en) | 2006-06-20 |
DE50211699D1 (de) | 2008-03-27 |
US20050066941A1 (en) | 2005-03-31 |
JP2005507052A (ja) | 2005-03-10 |
WO2003038267A1 (de) | 2003-05-08 |
JP4280632B2 (ja) | 2009-06-17 |
ATE386207T1 (de) | 2008-03-15 |
DE10152421A1 (de) | 2003-06-18 |
EP1440235B1 (de) | 2008-02-13 |
CN1478176A (zh) | 2004-02-25 |
CN1312394C (zh) | 2007-04-25 |
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