EP1799995A1 - Damping element for a fuel injection valve - Google Patents
Damping element for a fuel injection valveInfo
- Publication number
- EP1799995A1 EP1799995A1 EP05779854A EP05779854A EP1799995A1 EP 1799995 A1 EP1799995 A1 EP 1799995A1 EP 05779854 A EP05779854 A EP 05779854A EP 05779854 A EP05779854 A EP 05779854A EP 1799995 A1 EP1799995 A1 EP 1799995A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- damping element
- fuel injection
- injection valve
- section
- cylinder head
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/09—Fuel-injection apparatus having means for reducing noise
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
Definitions
- the invention is based on a damping element for a fuel injection valve according to the preamble of the main claim. It is already a damping element for a usable in a Aufhahmekanal a cylinder head of an internal combustion engine fuel injection valve known from DE 100 38 763 Al, which is arranged between a valve member of the fuel injection valve and a wall of the receiving channel of the cylinder head.
- the damping element consists of two rigid rings, between which an elastic intermediate ring is arranged. The damping element reduces i.a. the scarf transfer from
- the erfindungsgenfe Djmpfungselement with the characterizing features of the main claim has the advantage over simple manner an improvement is achieved in that with the same good damping effect as in the prior art less axial space bezittel the valve axis is necessary by the Djmpfungselement is formed plate-shaped , Due to the plate-shaped design and the storage of the fuel injection valve on a collar of the dish-shaped damping element, a sufficient elasticity of the damping element is achieved.
- Advantageous refinements and improvements of the damping element specified in the main claim are possible through the measures listed in the sub-claims.
- the damping element has a first section for supporting on a shoulder of the receiving channel in the cylinder head and a second section bent for the first section for stopping the fuel injection valve, since axial space is saved by the angling of the second section and in addition a sufficient elasticity of the Is achieved.
- first section of the second section rotates radially inwardly with respect to a valve axis, since in this way the shoulder of the receiving channel against which the damping element abuts can be produced more simply than in the case of a first section which extends from the second section proceeding radially outward.
- the first portion is formed substantially flat or curved.
- the second section is collar-shaped, essentially cone-shaped and / or arched. In this way the necessary elasticity of the damping element is achieved.
- the Efimpfungselement has a fürgangsiffiiung, which is penetrated by the fuel injection valve.
- the fürgangsiffiiung is advantageously formed on the first portion.
- first section and the second section at least one support for Abstitzen on the cylinder head or for Absüzung of the
- the damping element has two cover plates and an elastic intermediate layer arranged between the cover plates.
- This made of composite Djmungs element has a particularly good K ⁇ perschalldfcnpfung, since mechanical vibration energy in the elastic intermediate layer is converted by internal friction in the energy of the worm.
- FIG. 2 shows a first exemplary embodiment
- FIG. 3 shows a second exemplary embodiment
- FIG. 4 shows a third exemplary embodiment, in each case in a section II-IV of FIG.
- Fig.l shows a simplified illustrated fuel injection valve in a receiving bore of a cylinder head with a erfindungsgenfen Djmpfungselement between the fuel injection valve and the cylinder head.
- a fuel injection valve 1 is arranged in a receiving channel 2 of a cylinder head 3 of an internal combustion engine.
- the fuel injection valve 1 is used to inject fuel into a combustion chamber 4 of the internal combustion engine and is used for example in the so-called direct injection.
- the Brennstoffisnpritzventil 1 has at its inlet end 5, for example, a plug connection to a fuel distribution line 8, which is sealed for example by a seal 9 between the fuel distributor 8 and an inlet nozzle 10 of the fuel injection valve 1.
- the fuel injection valve 1 has aifierdem an electrical connection 11 for the electrical contacting of an actuator, not shown, of the fuel injection valve 1, for example an electromagnet or a piezoelectric or magnetostrictive actuator, for loading the fuel injection valve 1.
- the fuel injection valve 1 has a valve body 14, which has an actuator section 14.1 and a Hjsenabites 14.2.
- the cylinder-shaped iron section 14.2 has a smaller diameter than the cylindrical actuator section 14.1 of the valve lug 14, so that a ring-shaped valve shoulder 15 is formed at the transition between the sections 14.1, 14.2.
- the valve shoulder 15 is radially ai whether beziglich one
- the actuator not shown
- the actuator is arranged, which includes a valve needle, not shown.
- the valve needle, not shown extends from the actuator, not shown, into the dowel portion 14.2 of the valve body 14.
- the valve needle, not shown is known to have a closing body, not shown, which cooperates with a valve seat, not shown, on the dome portion.
- valve needle For opening the fuel injection valve, the valve needle, not shown, lifts off the valve seat, not shown, so that an output gap, not shown, is formed between the closing body and the valve seat and fuel passing through the fuel distributor line 8, the inlet nozzle 10 into the valve body 14 the output gap is injected into the combustion chamber 4.
- the receiving channel 2 is divided into a first channel section 2.1 for receiving the
- the diameter of the second channel section 2.2 is smaller than the diameter of the first channel section 2.1.
- Office transition from the smaller diameter second channel section 2.2 in the diametrical ren first channel section 2.1 is a ring-shaped first shoulder 21 is formed on the example, the fuel injection valve 1 is mounted.
- the second channel section 2.2 at the actuator channel 2.1 facing the end is flared.
- a damping element 25 is provided which, for example, on the first shoulder 21 of the Aufiiahmekanals 2 is applied and the fuel injector 1 absabs in the cone portion 17.
- the damping element 25 serves to reduce the body sound and vibration transmission from the fuel injection valve to the cylinder head 2 of the internal combustion engine.
- a fuel injection valve with a piezoelectric actuator can, in particular in multiple injections per injection cycle, be excited to strong vibrations, so that an effective structure-borne sound decoupling between the fuel injection valve and the cylinder head is required in order not sfrenden, emanating from the fuel injection valve noise on a vehicle to perceive.
- ErfindungsgerriBist Djmpfungselement 25 is plate-shaped. In this way, a very space-saving design is achieved. For example, between the first shoulder 21 of the cylinder head 3 and the fuel injection valve 1 in axial
- the damping element 25 has a first portion 26 for abduction or abutment against a shoulder of the receiving channel 2 in the cylinder head 3, for example the first shoulder 21, and an angled portion 26 for the first
- Section 27 for Abs drown the fuel injection valve on.
- the plate shape of the damping element 25 is formed by the second section 27 which is angled relative to the first section 26.
- the first section 26 is, for example, circular and the second section 27 is of ring-shaped design. Both sections 26,27 are connected one another with one another.
- the damping element 25 has a through-passage 28, through which the damping element 25 assumes a ring shape and which can be penetrated by the fuel injection valve 1.
- the passageway 28 is provided in the first portion 26 so that the bottom 26 of the plate 25 has an outlet.
- the damping element 25 is made, for example, of metal, for example steel, and / or plastic.
- the damping element 25 is made, for example, from sheet metal, for example with a thickness of 1.5 millimeters.
- the plate shape of the damping element 25 is achieved, for example, by means of a forming process, a cutting shaping or a primary shaping process.
- the first section 26 extends radially inward from the second section 27 with respect to the valve axis 16.
- the first section 26 may also be disposed radially on the second section 27 with respect to the valve axis 16.
- the radially inwardly disposed first portion 26 has the advantage over the radially outwardly disposed first portion 26 that the shoulder of the cylinder head 3, against which the damping element is applied, is easier to manufacture.
- the first portion 26 is formed, for example, substantially flat or curved and rests with a first support 29, for example, on the flat first shoulder 21 at.
- the FEche of the first edition 29 is ⁇ possible small form, to reduce the sound transmission.
- the first edition 29 is, for example, the flat, the first shoulder 21 facing bottom of Djmungsungssteg 25.
- the first edition 29 may also be formed by one or more arranged on the underside of Djmungselement 25 Erlvesi12. which have an arbitrary shape and to achieve a good radial displacement, for example, are rounded.
- the second section 27 protrudes collar-like from the first section 26 of the damping element 25.
- the second portion 27 is formed at least substantially konusfirmig, wherein also a movement may be provided to the cylinder head 3 toward aiß.
- the second section 27 is located with a second
- the damping element 25 is centered by the cone region 17 of the fuel injection valve 1 and the cone-shaped second section 27 cooperating with the cone region 17 with respect to the valve axis 16.
- the second support 30 is a part of the fuel injection valve 1 facing top of the Djmungsungs 25th
- one or more Erläicons are provided which form the second support 30 and are preferably rounded.
- a ring-shaped collar 33 is arranged as a second support 30 on the upper side of the damping element 25. This results, for example, in a line-shaped contact of the fuel injection valve 1 with the damping element 25, so that a gimbal bearing is achieved.
- Dertbergang from the first section 26 to the second section 27 may be sharp or rounded.
- the damping element 25 arranged in the suction channel 2 is displaceable in the radial direction with respect to the valve axis 16.
- the radial displaceability of the damping element 25 is necessary because a channel axis 31 of the Djsenabitess 2.2 of the receiving channel 2 and an inlet axis 32 of the fuel rail 8 are not always aligned due to tolerances.
- FIG. 2 shows a first exemplary embodiment of the damping element according to the invention in a section II of FIG.
- the raised collar 33 is arranged on an end of the second section 27 facing away from the first section 26 on the upper side facing the fuel injection valve 1.
- FIG. 3 shows a second exemplary embodiment of the damping element according to the invention in a section III of FIG.
- the parts which are identical or functionally identical to those of the fuel injection valve according to FIG. 1 and the first embodiment according to FIG. 2 are identified by the same reference numerals.
- the damping element according to FIG. 3 differs from the damping element according to FIG. 2 in that the longitudinal extension of the collar is 27 g &rgr;. In this way, the rigidity of the damping element 25 is preserved.
- the collar 33 is not arranged on an end facing away from the first section 26 of the second portion 27, but approximately on the EHite of the longitudinal extension of the collar 27 on the fuel injection valve 1 facing upper side.
- FIG. 4 shows a third exemplary embodiment of the invention damping element in a section IV of FIG.
- the parts which are identical or functionally identical to those of the fuel injection valve according to FIG. 1 and the exemplary embodiments according to FIG. 2 and FIG. 3 are identified by the same reference numerals.
- the E ⁇ mpfungselement according to Figure 4 differs from the Efimpfungs instituten according to Figure 2 and Figure 3 in that the E ⁇ mpfungselement of a composite material consisting of two cover plates 35 and provided between the cover plates 35 elastic intermediate layer 36 is made.
- the cover plates 35 and the intermediate layer 36 are each firmly connected to each other.
- the cover plates 35 shift relative to each other, whereby 36 occur in the elastic intermediate layer periodic shear deformations. Due to the internal friction in the elastic intermediate layer 36, in this case vibration energy is lost as mechanical energy, so that a vibration vaccination and thus a structure-borne sound vaccination is achieved.
- the first section 26 of the damping element 25 is according to the third exemplary embodiment not flat, but arched towards the first shoulder 21.
- the second portion 27 is substantially konusfirmig and additionally arched exerted. Radially ai burn falls to the second section 27, for example, a second shoulder 34 at. Dertbergang from the second section 27 to the second shoulder 34 is rounded, for example.
- the composite material which is initially flat in the initial form is brought into the dish form, for example, by forming.
- a plurality of damping elements 25 of the exemplary embodiments illustrated are also noise-stacked in order to achieve an even better noise damping.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004049277A DE102004049277A1 (en) | 2004-10-09 | 2004-10-09 | Damping element for a fuel injection valve |
PCT/EP2005/054467 WO2006040227A1 (en) | 2004-10-09 | 2005-09-08 | Damping element for a fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1799995A1 true EP1799995A1 (en) | 2007-06-27 |
EP1799995B1 EP1799995B1 (en) | 2010-12-01 |
Family
ID=35169424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05779854A Ceased EP1799995B1 (en) | 2004-10-09 | 2005-09-08 | Damping element for a fuel injection valve |
Country Status (5)
Country | Link |
---|---|
US (1) | US7832376B2 (en) |
EP (1) | EP1799995B1 (en) |
JP (1) | JP4621742B2 (en) |
DE (2) | DE102004049277A1 (en) |
WO (1) | WO2006040227A1 (en) |
Families Citing this family (36)
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US7406946B1 (en) | 2007-04-02 | 2008-08-05 | Hitachi, Ltd. | Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber |
EP2090773B1 (en) * | 2008-02-15 | 2010-12-08 | Continental Automotive GmbH | Fuel injector |
DE102008036413A1 (en) | 2008-08-05 | 2010-02-18 | Continental Automotive Gmbh | Fuel injection valve for arrangement on a combustion chamber of an internal combustion engine |
JP5231943B2 (en) * | 2008-10-30 | 2013-07-10 | トヨタ自動車株式会社 | Vibration insulator |
JP2010138809A (en) * | 2008-12-11 | 2010-06-24 | Denso Corp | Fuel injection valve installation structure |
DE102008054591A1 (en) | 2008-12-12 | 2010-06-17 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
US7823565B2 (en) * | 2009-01-14 | 2010-11-02 | Ford Global Technologies | Fuel injection system for internal combustion engine with injector isolator ring |
JP2010185323A (en) * | 2009-02-11 | 2010-08-26 | Denso Corp | Mounting structure for fuel injection valve and washer of fuel injection valve used therefor |
DE102009021857A1 (en) | 2009-05-19 | 2010-11-25 | Daimler Ag | Spring e.g. multilevel diaphragm spring, for support assembly of internal combustion engine of motor vehicle, has recess extending upward to outer edge of spring that exhibits degressive spring action characteristics |
WO2011008369A1 (en) * | 2009-06-29 | 2011-01-20 | Illinois Tool Works Inc. | Two-phase spring |
US8069842B2 (en) * | 2009-07-02 | 2011-12-06 | Robert Bosch Gmbh | Injector mounting assembly |
DE102009055762A1 (en) | 2009-11-25 | 2011-05-26 | Daimler Ag | Damping element for injection valve, particularly injector, of internal combustion engine, has support area that is formed by wall area of damping element |
DE112010005941B8 (en) | 2010-03-30 | 2023-10-05 | Toyota Jidosha Kabushiki Kaisha | Vibration isolator for a fuel injector and a support structure for a fuel injector |
WO2011121728A1 (en) * | 2010-03-30 | 2011-10-06 | トヨタ自動車 株式会社 | Vibration insulator for fuel injection valve, and support structure for fuel injection valve |
DE102010024140A1 (en) * | 2010-06-17 | 2011-12-22 | Continental Automotive Gmbh | Damping element for an arrangement of a cylinder head of an internal combustion engine and an injection valve |
WO2011163110A1 (en) * | 2010-06-21 | 2011-12-29 | Illinois Tool Works Inc. | Two phase flex spring fuel injector spacer |
US8978624B2 (en) | 2010-07-30 | 2015-03-17 | Toyota Jidosha Kabushiki Kaisha | Vibration damping insulator for fuel injection valve |
US8469004B2 (en) | 2010-09-14 | 2013-06-25 | Ford Global Technologies, Llc | Beveled dampening element for a fuel injector |
US8516996B2 (en) | 2010-12-01 | 2013-08-27 | Ford Global Technologies | Direct fuel injection system for internal combustion engine with conical ring injector isolator |
EP2469069A1 (en) * | 2010-12-27 | 2012-06-27 | Continental Automotive GmbH | Dampening Element for an Injection Valve |
EP2518304B1 (en) * | 2011-04-29 | 2014-04-23 | Continental Automotive GmbH | Fuel injector and fuel-injection system |
DE102011089295A1 (en) * | 2011-12-20 | 2013-06-20 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
DE102012206896A1 (en) * | 2012-04-26 | 2013-10-31 | Robert Bosch Gmbh | Arrangement with a fuel distributor and a plurality of fuel injection valves |
EP2690278B1 (en) * | 2012-07-23 | 2015-12-30 | Continental Automotive GmbH | Fuel injector and fuel-injection system |
DE102012221134A1 (en) * | 2012-11-20 | 2014-05-22 | Robert Bosch Gmbh | Arrangement for a fuel injection system with a fuel injection valve and a decoupling element |
DE202013005210U1 (en) * | 2013-06-07 | 2014-06-11 | Reinz-Dichtungs-Gmbh | sealing system |
DE102013212321A1 (en) * | 2013-06-26 | 2014-12-31 | Robert Bosch Gmbh | fuel injector |
JP2015028322A (en) * | 2013-07-30 | 2015-02-12 | 株式会社デンソー | Fuel injection valve |
US10036355B2 (en) | 2013-08-08 | 2018-07-31 | Cummins Inc. | Heat transferring fuel injector combustion seal with load bearing capability |
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 |
JP6260316B2 (en) | 2014-02-05 | 2018-01-17 | 株式会社デンソー | Fuel injection valve |
US20160160822A1 (en) * | 2014-12-04 | 2016-06-09 | Keihin Corporation | Vibration insulating structure of fuel injection valve in internal combustion engine |
JP6251224B2 (en) * | 2014-12-04 | 2017-12-20 | 株式会社ケーヒン | Anti-vibration structure of fuel injection valve in internal combustion engine |
JP7156772B2 (en) * | 2016-01-29 | 2022-10-19 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Fuel injection valve and fuel injector |
DE102017218008A1 (en) * | 2017-10-10 | 2019-04-11 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
JP7476827B2 (en) * | 2021-03-12 | 2024-05-01 | トヨタ自動車株式会社 | Vibration insulators for fuel injection systems |
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JPH09112697A (en) * | 1995-10-17 | 1997-05-02 | Mitsubishi Electric Corp | Seal ring |
JP3329998B2 (en) * | 1995-10-17 | 2002-09-30 | 三菱電機株式会社 | In-cylinder fuel injection valve |
JPH09242647A (en) | 1996-03-06 | 1997-09-16 | Zexel Corp | Installation structure of fuel injection nozzle |
JP3033499B2 (en) * | 1996-08-22 | 2000-04-17 | 三菱自動車工業株式会社 | Cylinder head sealing device |
US5954353A (en) * | 1998-02-06 | 1999-09-21 | American Axle & Manufacturing, Inc. | Plug in direct acting stabilizer bar link |
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DE19941930A1 (en) * | 1999-09-03 | 2001-03-15 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10027669A1 (en) * | 2000-06-03 | 2001-12-06 | Bosch Gmbh Robert | Fixing device for fuel injection valve has at least one sealing element in region of step in bush |
DE10038763A1 (en) | 2000-08-09 | 2002-02-21 | Bosch Gmbh Robert | Compensation element for a fuel injector |
US6938901B2 (en) * | 2000-12-26 | 2005-09-06 | Toyota Jidosha Kabushiki Kaisha | Combustion gas seal for injector and sealing structure with the combustion gas seal |
DE10108194A1 (en) * | 2001-02-21 | 2002-08-29 | Bosch Gmbh Robert | Sealing device for a fuel injector |
DE10108467A1 (en) * | 2001-02-22 | 2002-09-05 | Bosch Gmbh Robert | fastening device |
US6866026B2 (en) * | 2002-08-28 | 2005-03-15 | Federal-Mogul World Wide, Inc. | Gasket for fuel injector |
FR2851791B1 (en) * | 2003-02-28 | 2007-02-23 | Renault Sa | SEAL FOR INJECTOR WITH HIGH COEFFICIENT OF SEALING |
DE102005011574A1 (en) * | 2005-03-14 | 2006-09-21 | Robert Bosch Gmbh | Intermediate element for a fuel injection valve |
-
2004
- 2004-10-09 DE DE102004049277A patent/DE102004049277A1/en not_active Withdrawn
-
2005
- 2005-09-08 WO PCT/EP2005/054467 patent/WO2006040227A1/en active Application Filing
- 2005-09-08 US US11/665,040 patent/US7832376B2/en not_active Expired - Fee Related
- 2005-09-08 EP EP05779854A patent/EP1799995B1/en not_active Ceased
- 2005-09-08 JP JP2007535129A patent/JP4621742B2/en not_active Expired - Fee Related
- 2005-09-08 DE DE502005010632T patent/DE502005010632D1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006040227A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7832376B2 (en) | 2010-11-16 |
WO2006040227A1 (en) | 2006-04-20 |
US20090071445A1 (en) | 2009-03-19 |
DE102004049277A1 (en) | 2006-04-13 |
DE502005010632D1 (en) | 2011-01-13 |
JP2008516133A (en) | 2008-05-15 |
JP4621742B2 (en) | 2011-01-26 |
EP1799995B1 (en) | 2010-12-01 |
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