EP2582962A1 - Élément d'amortissement pour ensemble culasse de moteur à combustion interne et injecteur - Google Patents

Élément d'amortissement pour ensemble culasse de moteur à combustion interne et injecteur

Info

Publication number
EP2582962A1
EP2582962A1 EP11725067.0A EP11725067A EP2582962A1 EP 2582962 A1 EP2582962 A1 EP 2582962A1 EP 11725067 A EP11725067 A EP 11725067A EP 2582962 A1 EP2582962 A1 EP 2582962A1
Authority
EP
European Patent Office
Prior art keywords
damping element
injection valve
longitudinal axis
base body
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
Application number
EP11725067.0A
Other languages
German (de)
English (en)
Other versions
EP2582962B1 (fr
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.)
Aumovio Germany GmbH
Original Assignee
Continental Automotive Technologies 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 Technologies GmbH filed Critical Continental Automotive Technologies GmbH
Publication of EP2582962A1 publication Critical patent/EP2582962A1/fr
Application granted granted Critical
Publication of EP2582962B1 publication Critical patent/EP2582962B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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

  • Damping element for an arrangement of a cylinder head of an internal combustion engine and an injection valve
  • the invention relates to a damping element and a Anord ⁇ voltage of a cylinder head of an internal combustion engine and ei ⁇ nem injector with a damping element.
  • injection valves are used for injecting fuel into combustion chambers of an internal combustion engine.
  • the force ⁇ material is bar in the case of a gasoline internal combustion engine under a pressure of up to 200, is injected in case of a Dieselbrennkraftma ⁇ machine under a very high pressure of up to over 2000 bar in the combustion chambers.
  • the case used for injection valves for internal combustion engines make high demands on the accuracy of the injection of the fuel ⁇ material in the combustion chambers of the engine determining parameters. This is particularly important as more and more stringent regulatory requirements regarding the permissible pollutant emission of internal combustion engines arranged in motor vehicles are issued. These make it necessary to carry out various measures by which the pollutant emissions are reduced.
  • the injection valves 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 a Einspritzven ⁇ til, by the operation of the internal combustion engine with low pollutant emissions and a simple structure the arrangement of the cylinder head of an internal combustion engine and the injection valve is made possible.
  • the invention is characterized by a damping element, which is designed for damping a injection valve transferred between an input with a central longitudinal axis and a Zylin ⁇ The head of an internal combustion engine oscillation.
  • the damping element has an annular disk-shaped base body.
  • the damping element has at least one first contact section fixedly coupled to the base body and projecting beyond the base body in a first axial direction and a second contact section projecting beyond the base body in a first axial direction, coupled to the base body.
  • the at least one first contact portion has a radial distance from the longitudinal axis, which is not equal to a radial distance of the second contact portion from the longitudinal axis.
  • the terms "axial Rich ⁇ tion” and "longitudinal axis” in this case relate preferably to the central longitudinal axis of the injection valve.
  • the damping element (44) 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 Zvi ⁇ rule the injector and the cylinder head in the direction of the longitudinal axis of the transmitted vibration.
  • Such damping elements have the advantage that a
  • Vibration system which consists inter alia of the cylinder head and the injection valve.
  • the vibrations generated by the injection valve in this frequency range can be superimposed by the noise generated by the combustion and the aggregates.
  • either a raised stabili ⁇ hung the surface pressure or a reduction of the biasing force of the injection valve can be achieved.
  • a compensation of the different Ausdehnungskoeffi- is additionally achieved coefficient of the cylinder head and the injector. This can lead to a constant over the entire temperature range biasing force.
  • the damping element has two fixedly coupled to the main body, in the ers ⁇ th axial direction beyond the main body also protruding first contact portions.
  • the radial distance of the two ⁇ th contact portion from the longitudinal axis has a value between the values of the radial distances of the first contact sections of the longitudinal axis is.
  • at least one of the contact portions is at least partially annularly formed around the central longitudinal axis. This has the advantage that a good damping of the vibrations over the entire circumference of the damping element as well as a good sealing behavior of the damping element can be achieved.
  • the damping element is designed as a plate spring.
  • the injection valve has a clamping element for clamping the injection valve in the recess.
  • the damping element is integrally coupled to the clamping element.
  • FIG. 1 is a schematic view of an internal combustion ⁇ machine
  • FIG. 2 shows a part of an injection valve and a cylinder head of the internal combustion engine
  • FIGS. 3A and 3B show a damping element in a plan view and in a longitudinal section
  • FIGS. 4A and 4B show a damping element in a plan view and in a longitudinal section
  • FIG. 5 shows an embodiment of a damping element designed as a plate spring
  • FIG. 8 shows an embodiment of a damping element coupled to a tensioning element
  • Figure 9 shows another embodiment of a with the
  • Figure 10 shows a further embodiment of a with the
  • FIG. 1 shows a schematic view of a Brennkraftma ⁇ machine 10 is shown with an intake section 12, an engine block 14, a cylinder head 16 and an exhaust gas tract, the at ⁇ suction tract is 18, 12 to a cylinder Z via an inlet port into a combustion chamber 20 of the Engine block 14 out.
  • the engine block 14 further comprises a crankshaft 22 which is connected via a connecting rod 24 to a piston 26 of the cylinder Z. is coupled.
  • further cylinders are preferably provided.
  • Figure 2 shows an assembly of the cylinder head 16 and egg nem injector 30.
  • the cylinder head 16 has a Ausneh ⁇ mung 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 in ector body 32.
  • the In ektorITY 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. In the recess 34 of the injector body 32, 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 closing position of the nozzle needle 36 is a fluid flow through the at least one injection opening 40 is ver ⁇ and otherwise prevents fluid flow released through the at least ei ⁇ ne injection port 40th
  • the injection valve 30 has a clamping element 42, which in the
  • 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 Zvi ⁇ rule the injection valve 30 and the step formed in the recess 28 of the cylinder head 29 16th In front- ⁇
  • the damping element 44 is arranged axially between the In ⁇ jektor stresses 32 and the step 29 of the cylinder head 16 at ⁇ sorted.
  • the damping element 44 may be attenuated between the injector 30 and the cylinder head 16 technicallyene vibrations, such as may occur due to the vibrations occurring during operation of the internal combustion ⁇ machine.
  • a vibration transmitted between the injection valve 30 and the cylinder head 16 in the direction of the longitudinal axis L of the injection valve 30 can be damped.
  • the damping element 44 may be a ⁇ n ⁇ alteration of the vibration system 60 is composed of the cylinder head 16, the injection valve 30 and fastening elements, made at a frequency shift in a well-tolerated for the human frequency range.
  • the damping element 44 is formed in ⁇ sbesondere 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.
  • a high axial and Steifingkeit positio ⁇ discrimination of the nozzle tip are preferably achieved in a Temeratur Scheme of about -40 ° C and below 250 ° C and up to a pressure of up to 250 bar.
  • the material used is also preferably resistant to fuels and their combustion products.
  • the damping element 44 consists in particular wholly or partly ⁇ of a metal alloy, with the good resistance ⁇ speed 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 and extending in a first axial direction R_l beyond the main body 46 to the injection valve 30.
  • the first contact section 48a has a radial distance A_ll from the longitudinal axis L.
  • the damping element 44 has a second contact section 50 fixedly coupled to the main body 46, which extends in a second axial direction R_2 beyond the main 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_ll of the first contact portion 48a is different from the radial
  • the damping element 44 has a fixed to the body 46 coupled another first contact portion 48b which extends in the first axial direction R_l over 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_ll 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 circular ⁇ arranged annularly around the central longitudinal axis L (see in ⁇ sbesondere Figures 3A, 4A). Such annular contact-portions 48a, 50 allow both good oscillations ⁇ vibration spring over the circumference of the damping element 44 as well as a good seal by the damping element 44th
  • the damping element 44 is formed from one or more disk springs (FIG. 5).
  • FIG. 6 shows a disk spring V-shaped in the longitudinal section
  • FIG. 7 shows a disk spring S-shaped in longitudinal section.
  • Such trained or arranged disc springs allow a very good damping behavior of the damping element 44th
  • the damping element 44 is designed as a disk spring (FIG. 8) or as a cylinder disk (FIGS. 9, 10) and in each case is coupled in one piece with the tensioning element 42. This allows a good seal performance of the damping element 44.
  • the contact portions 48a, 48b, 50 may be preferably in the longitudinal ⁇ cut half-circular (contact portion 50, Figure 9), or be triangular in shape (contact portion 50, Figure 10).
  • the damping element 44 may each be formed separately from the clamping element 42.

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

L'invention concerne un élément d'amortissement (44) conçu pour amortir une vibration transmise entre un injecteur (30) et une culasse (16) d'un moteur à combustion interne (10). Cet élément d'amortissement (44) présente un corps de base (46) sensiblement en forme de disque annulaire, ainsi qu'au moins une première section de contact (48a, 48b) reliée de manière fixe au corps de base (46) et faisant saillie par rapport au corps de base (46) dans une première direction axiale (R_1) et une seconde section de contact (50) reliée de manière fixe au corps de base (46) et faisant saillie par rapport au corps de base (46) dans une seconde direction axiale (R_2) opposée à la première. La distance radiale (A_11, A_12) entre la première section de contact (48a, 48b) et l'axe longitudinal (L) est différente de la distance radiale (A_2) entre la seconde section de contact (50) et l'axe longitudinal (L).
EP11725067.0A 2010-06-17 2011-06-09 Élément d'amortissement pour ensemble culasse de moteur à combustion interne et injecteur Not-in-force EP2582962B1 (fr)

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 (fr) 2010-06-17 2011-06-09 Élément d'amortissement pour ensemble culasse de moteur à combustion interne et injecteur

Publications (2)

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

Family

ID=44260246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11725067.0A Not-in-force EP2582962B1 (fr) 2010-06-17 2011-06-09 Élément d'amortissement pour ensemble culasse de moteur à combustion interne et injecteur

Country Status (5)

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

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 (fr) 2013-10-04 2015-04-08 Continental Automotive GmbH Injecteur de fluide
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)

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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 (fr) * 2009-01-16 2010-07-22 Illinois Tool Works Inc. Ensemble ressort à deux phases pour une utilisation avec un système d'injecteur de carburant
US8875683B2 (en) * 2009-06-29 2014-11-04 Illinois Tool Works Inc. Two-phase spring
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

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Also Published As

Publication number Publication date
WO2011157619A1 (fr) 2011-12-22
CN103221679B (zh) 2017-04-05
EP2582962B1 (fr) 2015-08-26
US20130146026A1 (en) 2013-06-13
US9347412B2 (en) 2016-05-24
CN103221679A (zh) 2013-07-24
DE102010024140A1 (de) 2011-12-22

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