EP2582962B1 - Dämpfungselement für eine anordnung aus einem zylinderkopf einer brennkraftmaschine und einem einspritzventil - Google Patents

Dämpfungselement für eine anordnung aus einem zylinderkopf einer brennkraftmaschine und einem einspritzventil Download PDF

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Publication number
EP2582962B1
EP2582962B1 EP11725067.0A EP11725067A EP2582962B1 EP 2582962 B1 EP2582962 B1 EP 2582962B1 EP 11725067 A EP11725067 A EP 11725067A EP 2582962 B1 EP2582962 B1 EP 2582962B1
Authority
EP
European Patent Office
Prior art keywords
damping element
injection valve
cylinder head
longitudinal axis
internal combustion
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.)
Not-in-force
Application number
EP11725067.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2582962A1 (de
Inventor
Jens Fath
Joachim Wagner
Rainer Weber
Marco Haller
Robert Kuchler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2582962A1 publication Critical patent/EP2582962A1/de
Application granted granted Critical
Publication of EP2582962B1 publication Critical patent/EP2582962B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention relates to a damping element and an arrangement comprising a cylinder head of an internal combustion engine and an injection valve with a damping element ( FR-A-2862717 ).
  • injection valves For injecting fuel into combustion chambers of an internal combustion engine injection valves are used.
  • the fuel is injected in the case of a gasoline engine under a pressure of up to 200 bar, in the case of a diesel engine under a very high pressure of up to 2000 bar in the combustion chambers.
  • the injection valves for internal combustion engines used for this purpose place high demands on the accuracy of the parameters determining the injection of the fuel into the combustion chambers of the internal combustion engine. This is particularly important as more and more stringent legislation on the permissible pollutant emissions of internal combustion engines located in motor vehicles is enacted. These make it necessary to carry out various measures by which the pollutant emissions are reduced.
  • the injectors are exposed to high mechanical loads. In particular, shaking of the injection valves in the cylinder heads of the internal combustion engine may occur.
  • the object of the invention is to provide an arrangement of a cylinder head of an internal combustion engine and an injection valve, by the operation of the internal combustion engine is made possible with low pollutant emissions and a simple structure of the arrangement of the cylinder head of an internal combustion engine and the injection valve.
  • the invention is characterized by a damping element which is designed for damping an oscillation transmitted between an injection valve with a central longitudinal axis and a cylinder head of an internal combustion engine.
  • the damping element has an annular disk-shaped base body.
  • the damping element has at least two first contact sections fixedly coupled to the base body and projecting beyond the base body in the first axial direction, in a second contact section projecting beyond the base body in a second axial direction opposite the first axial direction.
  • a first contact portion has a radial distance from the longitudinal axis that is unequal to a radial distance of the second contact portion from the longitudinal axis.
  • the radial distance of the second contact portion from the longitudinal axis has a value that is between the values of the radial distances of the first contact portions from the longitudinal axis. This has the advantage that in addition to the damping behavior and a very good sealing behavior of the damping element can be achieved.
  • axial direction and “longitudinal axis” here preferably relate to the central longitudinal axis of the injection valve.
  • the damping element (44) according to the invention is preferably used in an arrangement with a cylinder head of an internal combustion engine, which has a recess and a step formed in the recess, an injection valve with a central longitudinal axis, which is at least partially disposed in the recess, and damping element.
  • the damping element is preferably arranged in the recess axially between the injection valve and the step.
  • the damping element is designed in particular for damping a vibration transmitted between the injection valve and the cylinder head in the direction of the longitudinal axis.
  • damping elements have the advantage that a transformation of an axial movement of the injection valve into an internal movement of the damping element is possible, which is transmitted only to a small extent or not at all to the cylinder head. Due to its design, the damping element can thus advantageously effect a deflection of the power flow. Thus, a low noise level of the internal combustion engine can be achieved.
  • Another advantageous effect of the damping element is a change in the vibration system, which consists inter alia of the cylinder head and the injection valve. This allows a frequency shift to a frequency range acceptable for humans. Furthermore, the vibrations generated by the injection valve in this frequency range can be superimposed by the noise generated by the combustion and the aggregates.
  • At least one of the contact portions is at least partially annularly formed around the central longitudinal axis.
  • FIG. 1 3 is a schematic view of an internal combustion engine 10 with an intake manifold 12, an engine block 14, a cylinder head 16, and an exhaust tract 18.
  • the intake manifold 12 is toward a cylinder Z via an intake passage guided into a combustion chamber 20 of the engine block 14.
  • the engine block 14 further comprises a crankshaft 22, which is coupled via a connecting rod 24 with a piston 26 of the cylinder Z.
  • further cylinders are preferably provided.
  • FIG. 2 shows an arrangement of the cylinder head 16 and an injection valve 30.
  • the cylinder head 16 has a recess 28. In the recess 28, a step 29 of the cylinder head 16 is formed. In the recess 28, a portion of the injection valve 30 is arranged.
  • the injection valve 30 has an injector body 32.
  • the injector body 32 is formed in several pieces in the embodiment shown here.
  • the injector body 32 can also be made in one piece.
  • the injector body 32 has a central longitudinal axis L and a recess 34.
  • a nozzle needle 36 is arranged, which may be made in one or more parts.
  • the injector body 32 comprises a high-pressure line 38, via which the injection valve 30 is connected to a high-pressure circuit (not shown) of a fluid.
  • a high-pressure circuit (not shown) of a fluid.
  • one or more injection openings 40 are or are arranged in the injector body 32. In a closed position of the nozzle needle 36, a fluid flow through the at least one injection opening 40 is prevented and otherwise a fluid flow through the at least one injection opening 40 is released.
  • the injection valve 30 has a clamping element 42 which is arranged in the recess 28 of the cylinder head 16.
  • the clamping element 42 is preferably designed as a nozzle retaining nut and serves to fix the injection valve 30 relative to the cylinder head 16.
  • a damping element 44 is arranged in the recess 28 of the cylinder head 16.
  • the damping element 44 is arranged axially between the injection valve 30 and the step 28 formed in the recess 29 of the cylinder head 16.
  • the damping element 44 is arranged axially between the injector body 32 and the step 29 of the cylinder head 16.
  • damping element 44 By the damping element 44, a change of the vibration system, which consists of the cylinder head 16, the injection valve 30 and fasteners 60, carried out to a frequency shift in a well-tolerated human frequency range. Furthermore, either an increase of the surface pressure or a reduction of the biasing force of the injection valve 30 can be achieved. By a corresponding design of the damping element 44, a compensation of the different coefficients of expansion of the cylinder head 16 with the fastening elements 60 and the injection valve 30 is additionally achieved. This can lead to a constant over the entire temperature range biasing force.
  • the damping element 44 is designed in particular as a one-piece ring.
  • the damping element consists at least partially of a material with high vibration damping capacity (internal damping) in the desired frequency and temperature range.
  • internal damping internal damping
  • the material used is also preferably resistant to fuels and their combustion products.
  • the damping element 44 is in particular wholly or partly made of a metal alloy, with which a good resistance of the damping element 44 can be achieved even at temperatures of up to 250 ° C and pressures of up to 250 bar. Furthermore, such alloys can be particularly resistant to fuels and their combustion products.
  • the damping element 44 has a base body 46.
  • the base body 46 is formed as an annular disc.
  • the damping element 44 has a first contact section 48a fixedly coupled to the main body 46, which extends in a first axial direction R_1 beyond the main body 46 to the injection valve 30.
  • the first contact portion 48a has a radial distance A_11 from the longitudinal axis L.
  • the damping member 44 has a second fixedly coupled to the base 46 contact portion 50 which extends in a second axial direction R_2 on the base body 46 to the step 29.
  • the second contact portion 50 has a radial distance A_2 from the longitudinal axis L.
  • the radial distance A_11 of the first contact portion 48a is not equal to the radial distance A_2 of the second contact portion 50 (FIG. FIGS. 3A and 3B ).
  • a transmission of an axial movement of the injection valve 30 into a vibration movement of the damping element 44 and thus a dissipation of energy in the damping element 44 can take place, so that kinetic energy only slightly or not at all is transferred to the cylinder head, including in particular the small contact surface between the damping element 44 and the stage 29 can contribute.
  • a good vibration damping by the damping element 44 can be achieved.
  • the damping element 44 has a further first contact section 48b fixedly coupled to the main body 46, which extends in the first axial direction R_1 beyond the main body 46 to the injection valve 30 and has a radial distance A_12 from the longitudinal axis L.
  • the radial distance A_2 of the second contact portion 50 is smaller than the radial distance A_11 of the first contact portion 48a and greater than the radial distance A_12 of the further first contact portion 48b.
  • the contact portions 48a, 48b, 50 are preferably arranged annularly around the central longitudinal axis L (see in particular FIGS. 3A, 4A ). Such annular contact portions 48a, 50 allow both a good vibration damping over the circumference of the damping element 44 and a good seal by the damping element 44th

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)
EP11725067.0A 2010-06-17 2011-06-09 Dämpfungselement für eine anordnung aus einem zylinderkopf einer brennkraftmaschine und einem einspritzventil Not-in-force EP2582962B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010024140A DE102010024140A1 (de) 2010-06-17 2010-06-17 Dämpfungselement für eine Anordnung aus einem Zylinderkopf einer Brennkraftmaschine und einem Einspritzventil
PCT/EP2011/059574 WO2011157619A1 (de) 2010-06-17 2011-06-09 Dämpfungselement für eine anordnung aus einem zylinderkopf einer brennkraftmaschine und einem einspritzventil

Publications (2)

Publication Number Publication Date
EP2582962A1 EP2582962A1 (de) 2013-04-24
EP2582962B1 true EP2582962B1 (de) 2015-08-26

Family

ID=44260246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11725067.0A Not-in-force EP2582962B1 (de) 2010-06-17 2011-06-09 Dämpfungselement für eine anordnung aus einem zylinderkopf einer brennkraftmaschine und einem einspritzventil

Country Status (5)

Country Link
US (1) US9347412B2 (zh)
EP (1) EP2582962B1 (zh)
CN (1) CN103221679B (zh)
DE (1) DE102010024140A1 (zh)
WO (1) WO2011157619A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010024140A1 (de) 2010-06-17 2011-12-22 Continental Automotive Gmbh Dämpfungselement für eine Anordnung aus einem Zylinderkopf einer Brennkraftmaschine und einem Einspritzventil
EP2857671A1 (en) 2013-10-04 2015-04-08 Continental Automotive GmbH Fluid injector
DE102016211689A1 (de) * 2016-06-29 2018-01-04 Robert Bosch Gmbh Injektor mit Dämpfungselement
DE102017218008A1 (de) * 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0442647A (ja) 1990-06-07 1992-02-13 Omron Corp 相手先認識機能付き電話機
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
JPH09242647A (ja) * 1996-03-06 1997-09-16 Zexel Corp 燃料噴射ノズルの取付構造
JP3033499B2 (ja) * 1996-08-22 2000-04-17 三菱自動車工業株式会社 シリンダヘッドのシール装置
DE19941930A1 (de) * 1999-09-03 2001-03-15 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10338715B4 (de) * 2003-08-22 2014-07-17 Robert Bosch Gmbh Ausgleichselement für ein Brennstoffeinspritzventil
FR2862717B1 (fr) * 2003-11-21 2006-04-07 Renault Sas Agencement pour l'etancheite entre un porte-injecteur et une culasse de vehicule automobile
DE102004049277A1 (de) * 2004-10-09 2006-04-13 Robert Bosch Gmbh Dämpfungselement für ein Brennstoffeinspritzventil
CN2835609Y (zh) * 2005-07-27 2006-11-08 安徽江淮汽车股份有限公司 一种2.8升增压中冷柴油机
DE102007019006B4 (de) 2007-04-21 2009-06-18 Ab Skf Dichtelement
US7823565B2 (en) * 2009-01-14 2010-11-02 Ford Global Technologies Fuel injection system for internal combustion engine with injector isolator ring
WO2010082991A1 (en) * 2009-01-16 2010-07-22 Illinois Tool Works Inc. Dual-phase spring assembly for use with fuel injector system
KR101767168B1 (ko) * 2009-06-29 2017-08-10 일리노이즈 툴 워크스 인코포레이티드 2상 스프링
US8069842B2 (en) * 2009-07-02 2011-12-06 Robert Bosch Gmbh Injector mounting assembly
DE102010024140A1 (de) 2010-06-17 2011-12-22 Continental Automotive Gmbh Dämpfungselement für eine Anordnung aus einem Zylinderkopf einer Brennkraftmaschine und einem Einspritzventil
US8469004B2 (en) * 2010-09-14 2013-06-25 Ford Global Technologies, Llc Beveled dampening element for a fuel injector
DE102011089295A1 (de) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung

Also Published As

Publication number Publication date
EP2582962A1 (de) 2013-04-24
CN103221679A (zh) 2013-07-24
CN103221679B (zh) 2017-04-05
US9347412B2 (en) 2016-05-24
US20130146026A1 (en) 2013-06-13
WO2011157619A1 (de) 2011-12-22
DE102010024140A1 (de) 2011-12-22

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