EP1888912A1 - Connection system - Google Patents
Connection systemInfo
- Publication number
- EP1888912A1 EP1888912A1 EP06721183A EP06721183A EP1888912A1 EP 1888912 A1 EP1888912 A1 EP 1888912A1 EP 06721183 A EP06721183 A EP 06721183A EP 06721183 A EP06721183 A EP 06721183A EP 1888912 A1 EP1888912 A1 EP 1888912A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection system
- fuel
- hold
- connection
- 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
- F02M61/14—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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
Definitions
- the invention is based on a connection system for a fuel injection valve to be used in a receiving bore in a cylinder head, according to the preamble of claim 1.
- a fastening device for fastening a fuel injection valve for direct injection of fuel into the combustion chamber of an internal combustion engine which comprises a hold-down, which is attached to the fuel injection valve, wherein the hold-down is formed as a flat member and to a the fuel injection valve encompassing sleeve, which serves to compensate for tolerances in the installation of the fuel injection valve, is supported.
- the hold-down is tightened by a corresponding tool so tight that the fuel injection valve is not pushed out by the pressure prevailing in the combustion chamber of the engine pressure from the cylinder head.
- a disadvantage of the known fastening device is in particular the bracing effect of the clamping claw on the fuel injection valve.
- the force flow generated in the fuel injection valve leads to deformations and thus to changes in the stroke of the valve needle to jamming and to a pressure or bending load of the housing parts, which are generally thin-walled and welded together at several points.
- each fastening measure leads, for example by a support collar to increase the radial extent of the fuel injection valve and thus to an increased space requirement during installation.
- the tolerance compensation between the injection valve and the fuel rail is realized by forcibly pulling the pipe to the desired position, causing deformation of the pipe.
- the forces acting on the injection valve transverse forces are absorbed by the injection valve.
- the high forces acting on the fuel injection valve can cause the fuel injection valve to be pressed into the receiving bore of the cylinder head so strongly that beads form and the fuel injection valve settles in these beads, which makes further tolerance compensation due to lack of mobility in the cylinder head more difficult.
- connection system for a fuel injection valve to be inserted into a receiving bore in a cylinder head for connection to a fuel rail comprising a connection to a pipe leading to a fuel reservoir, with a connecting part for connection to the pipeline and the characterizing features of the main claim has the Advantage that when installed on the fuel injection valve no excessive lateral forces act, damaging the valve.
- the necessary tolerance compensation is carried out on the one hand on the connecting part to the pipe by the spherical end piece according to the invention can be before the tightening of the nut perpendicular to the plane in which the pipe is moving, and thus allows a transversal free installation.
- a movement of the pipeline along its course caused by axial forces causes elastic or plastic deformation as soon as the pipeline can no longer absorb these axial forces along its course.
- Cylinder head gasket as a fixed point represents. This ensures that a tolerance compensation in all levels is possible, in such a way that the fuel injector no transverse or longitudinal forces act, which can be caused by manufacturing tolerances during installation. For the mobility of the pipe in the connection areas must also be given, which is ensured by the inventive connection system for a fuel injection valve to a fuel distribution line.
- Fig. 1 is a side view in section of a part of an inventive
- Connection system for connecting a fuel distribution line to a pipe leading to a fuel reservoir
- Fig. 2 is a plan view of a part of a connection system according to the invention for
- Fig. 3 is a partial section of a part of a connection system according to the invention for
- FIG. 4 shows a partial section of a second exemplary embodiment of part of a connection system according to the invention for connecting a fuel distributor line to a pipeline leading to a fuel reservoir;
- Fig. 5 is a side view of a hold-down claw, the part of a connection system according to the invention for connecting a fuel distribution line to a
- Fuel injection valve is; - A -
- FIG. 6 shows a plan view of a holding-down claw which is part of a connection system according to the invention for connecting a fuel distributor line to a fuel injection valve;
- FIG. 7 shows a partial view of a holding-down clamp with a fuel injection valve, which is part of a connection system according to the invention for connecting a fuel distributor line to a fuel injection valve;
- FIG. 8 shows an overall view of a fuel injector hold-down clamp which is part of a connection system according to the invention for connecting a fuel distributor line to a fuel injection valve;
- FIG. 9 shows a partial view of a holding-down clamp with fuel injection valve, which is part of a connection system according to the invention for connecting a fuel distributor line to a fuel injection valve;
- FIG. 10 is an overall view of a connector for connecting a fuel injection valve to a fuel rail
- FIG. 11 shows a section through a pipe connection to be screwed to the connection piece to the fuel distributor line.
- connection system 1, 1a shows a side view in a sectional view of part of a connection system 1, 1a according to the invention for connecting a fuel distributor line 4 to a pipeline 6 leading to a fuel reservoir (not shown).
- connection system 1 Ia for a fuel injection valve 2 to be inserted into a receiving bore in a cylinder head for connection to a fuel distributor line 4, which has a connection 5 to one to a fuel reservoir leading pipe 6, with a connecting part 7 for connection to the pipe 6 is characterized in that a hold down claw 8 at its first end 9 has an elongated opening 10 for receiving a connected to the inlet end of the fuel injection valve fitting 11 to the fuel rail 4 and that the connecting part 7 to the pipe 6 has a pipe fitting 12 with an end piece 13.
- the end piece 13 which may be formed as a spherical rotary member is before tightening a union nut 23 perpendicular to the direction 37, in which the pipe 6 extends, movable, occurring manufacturing tolerances are compensated. It is the
- connection system 1, 1a causes the connection system 1, 1a to be free of lateral force, which means that the installed fuel injection valve 2 does not receive any forces due to the given manufacturing tolerances of the individual components.
- Fig. 2 shows a plan view of a part of a connection system 1, 1a according to the invention.
- a union nut 23, which is part of a necessary for the connection of a fuel rail 4 to a pipe 6 pipe fitting 12 is tightened after the manufacturing tolerances are compensated by the fact that the spherical end piece 13 is displaced so that the fuel injection valve 2 and the fuel rail 4 no Forces more perpendicular to the course of the fuel reservoir leading to the not shown pipe 6 receives.
- the arrows 35 and 36 illustrate the directions in which the spherical end piece 13 can be moved for tolerance compensation before tightening the nut 23.
- connection system 1, 1 a for connection of a fuel distribution line 4 to a leading to a fuel reservoir not shown pipe 6.
- the necessary pipe fitting 12 has a union nut 23, which is the partially spherical tail 13 in a cone-shaped seat 25 presses.
- the cone-shaped seat 25 limits the inflow end 24 of the
- Fuel distribution line 4 which is in the form of a flange 26 which forms the inlet to the fuel distribution line 4.
- connection system 1 for connecting a fuel distributor line 4 to a pipeline 6 leading to a fuel reservoir (not shown).
- the inlet-side end 24 of the fuel distributor line 4 is in the form of a recess 27, in which the at least partially spherical end piece 13 is inserted and in which the end piece 13 for
- Tolerance compensation along the directions 35 and 36 can be moved back and forth before it is fixed by means of a flat blank holder 28 which is placed around the terminal and the end piece 13 and is screwed with at least two screws 38, 39 in the fuel rail 4.
- the screws 38, 39 are preferably arranged symmetrically to a longitudinal axis 40 of the recess 27. If the screws 38, 39 are tightened on the fuel distributor line 4, the end piece 13 is pressed onto the cone-shaped seat 25, which delimits the recess 27 of the inlet-side end 24 of the fuel distributor line 4.
- FIG. 5 shows a side view of a hold-down claw 8 in a perspective view, the part of a connection system 1, 1a according to the invention for connecting a
- the hold-down claw 8 is a bent and stamped component made of sheet metal, which is screwed with at least one screw 41 on a not-shown end face of the cylinder head.
- the holding-down claw 8 has an elongate opening 10 which completely encloses the inlet-side connecting piece 11 provided with an external thread 42 to the fuel distributor line 4.
- the manufacturing tolerances in the direction 37 which is parallel to the course of the fuel reservoir leading to the pipe 6 by the fuel injection valve 2 is displaced in the elongated opening 10 of the hold down claw 8 by a small length, along a longitudinal axis 18 of the elongated opening 10 .
- This translational movement of the fuel injector 2 along the longitudinal axis 18 of the elongated opening 10 constitutes a rotational movement of the fuel injector 2 with respect to the cylinder head seal 45, causing the inventive port system 1, 1a transversely and non-restraint installation of the fuel injector 2 into one further illustrated receiving bore of the cylinder head allows.
- FIG. 6 shows a plan view of a holding-down clamp 8, which is part of a connection system 1, 1a according to the invention for connecting a fuel distributor line 4 to a fuel injection valve 2, the plug connection 21 for the electrical contacting being shown laterally in this FIG.
- the hold-down claw 8 is fixed with a screw 41 on the cylinder head not shown.
- the elongated opening 10 at a first end 9 of the hold-down clamp 8 fixes the inlet-side connecting piece 11 provided with an external thread 42, which is inserted into the fuel injection valve 2 for connection to the fuel distributor line 4.
- connection of the fuel injection valve 2 to the fuel distributor line 4 is produced by fitting and screwing the pipe connection 44, provided with an internal thread 43, in a direction 37 parallel to the pipe connection 44 by displacing the fuel injection valve 2 becomes.
- the diameter of the elongated opening formed by a partial circle 14 and two secants 15 10 perpendicular to a longitudinal axis 18 of the hold-down claw 8 extending corresponds to the width across flats 49 of the wrench to be screwed. This diameter corresponds to the distance between the parallel secants 15, which run parallel to the longitudinal axis 18 of the hold-down claw 8.
- a further exemplary embodiment of the oblong opening 10 extends to a partial ellipse and two secants running parallel to its large semiaxis.
- the partial ellipse and the Both secants define the circumference 17 of the elongated opening 10 with the major half axis and the longitudinal axis 18 of the hold down claw 8 coinciding.
- a second end 20 of the hold down claw 8 rests on a not-shown end face of the cylinder head, wherein at the second end 20 of the hold down claw 8 at least one opening 22 is provided which receives the screw 41, the second end 20 of the hold down claw 8 at the Not shown end face of the cylinder head fixed.
- FIG. 7 shows a partial view of a hold-down claw 8 with a fuel injection valve 2 in a perspective view, the hold-down claw 8 being part of the connection system 1, 1a according to the invention for connecting a fuel distributor line 4 to a fuel injection valve 2.
- the plug connection 21 can be seen, which enables electrical contacting of the fuel injection valve 2.
- the pipe connection 44 is placed on the inserted into the fuel injection valve 2, inlet side, rohrformige fitting 11 and not quite screwed, so that the
- Fuel injection valve 2 can be moved parallel to the longitudinal axis 18 of the hold down 8 in the provided in the hold-down claw 8 elongated opening 10 to compensate for manufacturing tolerances.
- FIG. 8 shows a perspective view of an overall view of a holding-down clamp 8 with fuel injection valve 2, which is part of a connection system 1, 1a according to the invention for connecting a fuel distributor line 4 to a fuel injection valve 2.
- the pipe connection 44 is placed on the inserted into the fuel injection valve 2 rohrformige connector 11 and screwed tight after the fuel injection valve 2 has been moved in the elongated opening 10 to compensate for manufacturing tolerances parallel to the longitudinal axis 18 of the hold 8.
- FIG. 9 shows a perspective view of a partial view of a hold-down claw 8 with fuel injection valve 2, which is part of the connection system 1, 1a according to the invention for connecting a fuel distributor line 4 to a fuel injection valve 2.
- the elongated opening 10 in the hold-down claw 8 encloses the rohrformige provided with an external thread 42 inlet-side fitting 11, which in the inlet end of the Fuel injection valve 2 is inserted.
- At a second end 20 of the hold down claw 8 there is at least one opening for receiving a screw 41, which fixes the hold-down claw 8 with its second end 20 on a not-shown end face of the cylinder head.
- FIG. 10 shows an overall view of an inlet-side, tubular fitting 11, which connects the fuel injection valve 2 to the fuel distributor line 4.
- the tubular, inlet-side fitting 11 is provided at its upstream end with an external thread 42 and is inserted with its downstream end in the inflow-side end of the fuel injection valve 2, after a ring 46 whose diameter is dimensioned so that it over the external thread 42 of the rohrformigen , inflow-side connecting piece 11 can be pushed, is welded below the external thread 42.
- the pipe connection 44 has an internal thread 43 and is plugged and screwed with its outlet-side end onto the tubular inlet-side connecting piece 11.
- the inlet-side end 47 of the pipe connection 44 leads to the fuel distributor line 4.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005024053A DE102005024053A1 (en) | 2005-05-25 | 2005-05-25 | Connection System |
PCT/EP2006/061050 WO2006125686A1 (en) | 2005-05-25 | 2006-03-27 | Connection system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1888912A1 true EP1888912A1 (en) | 2008-02-20 |
EP1888912B1 EP1888912B1 (en) | 2010-06-02 |
Family
ID=36384492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06721183A Not-in-force EP1888912B1 (en) | 2005-05-25 | 2006-03-27 | Connection system |
Country Status (5)
Country | Link |
---|---|
US (1) | US7461638B2 (en) |
EP (1) | EP1888912B1 (en) |
JP (1) | JP2008542601A (en) |
DE (2) | DE102005024053A1 (en) |
WO (1) | WO2006125686A1 (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006056704A1 (en) * | 2006-11-30 | 2008-06-05 | Robert Bosch Gmbh | Fuel injector and fuel injection system |
KR100862418B1 (en) * | 2006-12-15 | 2008-10-08 | 현대자동차주식회사 | Injector clamp for vehicle |
EP1967728B1 (en) * | 2007-03-08 | 2009-10-14 | Continental Automotive GmbH | Coupling device and fuel supply arrangement |
US8047183B2 (en) * | 2009-05-29 | 2011-11-01 | Cummins Intellectual Properties, Inc. | Fuel injector, clamping assembly and method of mounting a fuel injector |
US8087398B2 (en) * | 2009-06-02 | 2012-01-03 | Hitachi Automotive Systems Americas Inc. | Fuel system for a direct injection internal combustion engine |
JP5513191B2 (en) * | 2010-03-19 | 2014-06-04 | 株式会社ケーヒン | Fuel supply device for in-cylinder fuel injection valve |
DE102010034411B4 (en) * | 2010-08-14 | 2018-10-11 | Audi Ag | Internal combustion engine with injection valve |
DE112011103126T5 (en) * | 2010-10-20 | 2013-09-12 | Illinois Tool Works Inc. | Fuel injector mounting arrangement |
CN102619662B (en) * | 2012-04-18 | 2013-07-17 | 马万俊 | Cold start atomizing nozzle for methanol automobile |
DE102012209421A1 (en) * | 2012-06-04 | 2013-12-05 | Robert Bosch Gmbh | Device for metering fuel |
WO2013182213A1 (en) * | 2012-06-05 | 2013-12-12 | Caterpillar Motoren Gmbh & Co. Kg | Fuel guiding component |
USD762823S1 (en) * | 2013-02-14 | 2016-08-02 | Yanmar Co., Ltd. | Fuel injection pipe |
USD763413S1 (en) * | 2013-02-14 | 2016-08-09 | Yanmar Co., Ltd. | Fuel injection pipe |
US20160115920A1 (en) * | 2013-06-06 | 2016-04-28 | Hitachi Automotive Systems, Ltd. | Electromagnetic Fuel Injection Valve |
EP2821630A1 (en) | 2013-07-05 | 2015-01-07 | Delphi International Operations Luxembourg S.à r.l. | High pressure fluid connection |
JP6395218B2 (en) * | 2014-12-23 | 2018-09-26 | 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 | Component incorporated in fuel injection system and fuel injection system |
DE102015205980A1 (en) * | 2015-04-02 | 2016-10-06 | Robert Bosch Gmbh | Fuel injection system and hydraulic connection to a fuel injection system |
JP6734179B2 (en) | 2016-10-31 | 2020-08-05 | 三桜工業株式会社 | Fuel piping |
DE102017214980A1 (en) * | 2017-08-28 | 2019-02-28 | Robert Bosch Gmbh | Injection valve arrangement |
GB2579641B (en) * | 2018-12-10 | 2021-12-08 | Delphi Tech Ip Ltd | Assembly of a common rail in an internal combustion engine |
US10801457B1 (en) | 2019-07-03 | 2020-10-13 | Delphi Technologies Ip Limited | Fuel rail assembly providing connection to a fuel injector |
US11454200B2 (en) | 2019-11-08 | 2022-09-27 | Delphi Technologies Ip Limited | Fuel system with an arrangement which seals between a fuel injector and a fuel rail socket |
US11644000B2 (en) * | 2021-08-25 | 2023-05-09 | Caterpillar Inc. | Fuel injector clamp assembly for offset clamping bolt and cylinder head assembly with same |
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DE2454081A1 (en) * | 1974-11-14 | 1976-05-26 | Steyr Daimler Puch Ag | IC engine fuel injector clamp - straight tube section is deformed at two diametrically opposite sides to receive fixing studs |
AT350854B (en) * | 1976-08-26 | 1979-06-25 | List Hans | DEVICE FOR FASTENING A FUEL INJECTION NOZZLE RECEIVED IN A BORE OF A CYLINDER HEAD OF A COMBUSTION MACHINE |
WO1980001189A1 (en) * | 1978-11-29 | 1980-06-12 | Caterpillar Tractor Co | Injection nozzle clamp |
US4485790A (en) * | 1982-04-19 | 1984-12-04 | Yanmar Diesel Engine Company Limited | Holding construction of a fuel injection valve in an internal combustion engine |
US4938193A (en) * | 1987-06-15 | 1990-07-03 | Stanadyne Automotive Corp. | Fuel injection nozzle |
US5174612A (en) * | 1991-07-15 | 1992-12-29 | Senior Engineering Investments, B.V. | Vibration isolating sealing clamp for conduit structures |
DE4138290A1 (en) * | 1991-11-21 | 1993-05-27 | Kloeckner Humboldt Deutz Ag | INTERNAL COMBUSTION ENGINE |
US5499612A (en) * | 1994-10-03 | 1996-03-19 | Caterpillar Inc. | Dual-function clamping assembly adapted for a hydraulically-actuated fuel injector |
US5566658A (en) * | 1995-04-21 | 1996-10-22 | Cummins Engine Company, Inc. | Clamping load distributor and top stop for a fuel injector |
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GB2337083A (en) * | 1998-05-09 | 1999-11-10 | Perkins Engines Co Ltd | A fuel injector clamp for an internal combustion engine |
JP3535981B2 (en) * | 1998-10-20 | 2004-06-07 | 株式会社クボタ | Engine fuel injector fixing device |
JP2000145580A (en) * | 1998-11-11 | 2000-05-26 | Isuzu Motors Ltd | Fixing structure of injector |
DE10027662A1 (en) * | 2000-06-03 | 2001-12-06 | Bosch Gmbh Robert | Sealing unit for a fuel injection valve in a cylider head bore comprises a main body with an axial bore with an enlarged section which accommodates a sealing element |
DE10108190A1 (en) * | 2001-02-21 | 2002-08-29 | Bosch Gmbh Robert | Hold-down plate for fastening a fuel injector |
DE10112665A1 (en) * | 2001-03-16 | 2002-09-19 | Bosch Gmbh Robert | Attachment device for fuel injection valve has clamping in form of flat component supported on sleeve about valve in contact with preferably metal collar of valve |
US6431152B1 (en) * | 2001-03-30 | 2002-08-13 | International Engine Intellectual Property Company, L.L.C. | Injector hold down clamp |
JP2003328900A (en) * | 2002-05-15 | 2003-11-19 | Mitsubishi Electric Corp | Fuel injection device |
JP2004360586A (en) * | 2003-06-05 | 2004-12-24 | Mitsubishi Electric Corp | Fuel injection valve device for injection inside cylinder |
JP4114601B2 (en) * | 2003-12-08 | 2008-07-09 | 日産自動車株式会社 | Fixed structure of fuel injection nozzle |
DE102006019306A1 (en) * | 2006-04-26 | 2007-10-31 | Robert Bosch Gmbh | Fastener for fuel injector of e.g. common rail injection system, has bearing surface formed at inner edge of fastener that is implemented as locking bracket, where latch overlapping injector body is implemented in inner edge of bracket |
US7334572B1 (en) * | 2007-01-30 | 2008-02-26 | Ford Global Technologies, Llc | System and method for securing fuel injectors |
-
2005
- 2005-05-25 DE DE102005024053A patent/DE102005024053A1/en not_active Withdrawn
-
2006
- 2006-03-27 JP JP2008512788A patent/JP2008542601A/en not_active Withdrawn
- 2006-03-27 WO PCT/EP2006/061050 patent/WO2006125686A1/en not_active Application Discontinuation
- 2006-03-27 DE DE502006007103T patent/DE502006007103D1/en active Active
- 2006-03-27 EP EP06721183A patent/EP1888912B1/en not_active Not-in-force
- 2006-03-27 US US11/597,443 patent/US7461638B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006125686A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006125686A1 (en) | 2006-11-30 |
US7461638B2 (en) | 2008-12-09 |
EP1888912B1 (en) | 2010-06-02 |
DE502006007103D1 (en) | 2010-07-15 |
DE102005024053A1 (en) | 2006-11-30 |
JP2008542601A (en) | 2008-11-27 |
US20070246016A1 (en) | 2007-10-25 |
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