EP3234345A1 - Élément de désaccouplement pour dispositif d'injection de carburant - Google Patents

Élément de désaccouplement pour dispositif d'injection de carburant

Info

Publication number
EP3234345A1
EP3234345A1 EP15781373.4A EP15781373A EP3234345A1 EP 3234345 A1 EP3234345 A1 EP 3234345A1 EP 15781373 A EP15781373 A EP 15781373A EP 3234345 A1 EP3234345 A1 EP 3234345A1
Authority
EP
European Patent Office
Prior art keywords
decoupling element
fuel injection
injection valve
receiving bore
element according
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
EP15781373.4A
Other languages
German (de)
English (en)
Other versions
EP3234345B1 (fr
Inventor
Martin Scheffel
Wilhelm Reinhardt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3234345A1 publication Critical patent/EP3234345A1/fr
Application granted granted Critical
Publication of EP3234345B1 publication Critical patent/EP3234345B1/fr
Active 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/026—Means for reducing the pressure in common rails at power off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • 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
    • F02M61/166—Selection of particular materials
    • 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
    • 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
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • 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
    • 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
    • F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
    • F02M69/36—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages
    • F02M69/38—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages using fuel pressure, e.g. by varying fuel pressure in the control chambers of the fuel metering device

Definitions

  • the invention is based on a decoupling element for a
  • Fuel injection device according to the preamble of the main claim.
  • Fuel injection device shown in which a flat intermediate element is provided on a built-in a receiving bore of a cylinder head of an internal combustion engine fuel injection valve.
  • such intermediate elements are stored as support elements in the form of a washer on a shoulder of the receiving bore of the cylinder head.
  • the fuel injector is particularly suitable for use in fuel injection systems of
  • the intermediate element is a lower ring having a circular cross section which is disposed in a region in which both the fuel injection valve and the wall of the receiving bore in the cylinder head are frustoconical and serves as a compensation element for supporting and supporting the fuel injection valve.
  • Fuel injection devices are inter alia also from DE 100 27 662 AI, DE 100 38 763 AI and EP 1 223 337 AI known. These intermediate elements are characterized by the fact that they are all constructed in several parts or multi-layered and should partially take over sealing and damping functions. That from the
  • AI known intermediate element comprises a base and carrier body in which a sealant is inserted, which is penetrated by a nozzle body of the fuel injection valve.
  • a multilayer compensating element is known, consisting of two rigid rings and a sandwich between them
  • This compensating element allows both a tilting of the fuel injection valve to the axis of the
  • a likewise multi-layer intermediate element is also known from EP 1 223 337 AI, this intermediate element is composed of several washers, which consist of a damping material.
  • the damping material made of metal, rubber or PTFE is chosen and designed so that a noise attenuation of the vibrations generated by the operation of the fuel injection valve and noise is made possible.
  • the intermediate element must, however, include four to six layers to achieve a desired damping effect.
  • US 6,009,856 A also proposes to surround the fuel injector with a sleeve and to fill the resulting gap with an elastic, noise-damping mass. This kind of
  • the decoupling element according to the invention for a fuel injection device with the characterizing features of claim 1 has the advantage that in a very simple construction improved noise attenuation is achieved.
  • the decoupling element has a non-linear, progressive spring characteristic, through which when installing the decoupling element in a fuel injection device with injectors for a
  • Direct fuel injection results in several positive and advantageous aspects.
  • the low stiffness of the decoupling element at the idling point allows effective decoupling of the fuel injection valve from the cylinder head and thereby significantly reduces noise radiated from the cylinder head in noise-critical idling operation.
  • the high rigidity at nominal system pressure provides low overall fuel injector movement during vehicle operation thereby assuring the durability of the gaskets that serve as the gasket and sealing against the fuel rail and a stable spray point of the fuel spray in the combustion chamber Stability of some combustion processes is crucial.
  • the decoupling element is characterized by a low height, which means that it can be used even in a small space.
  • the decoupling element also has a high fatigue strength even at high temperatures.
  • the decoupling element is
  • Fuel injection device possible.
  • Guiding elements are provided on the decoupling element, wherein the stiffness is increased in the contact case at high loads by the lateral guidance of the decoupling element in the receiving bore of the cylinder head.
  • Figure 1 is a partially illustrated fuel injection device in a known
  • Figure 2 is a mechanical equivalent circuit diagram of the support of
  • FIG. 3 shows the transmission behavior of a spring-mass-damper system shown in FIG. 2 with a gain at low frequencies in the range of the resonant frequency f R and an isolation range above the decoupling frequency f E ,
  • Figure 5 shows an inventive decoupling element as a single part in an oblique
  • Figure 6 shows a retaining ring as a single part in an oblique plan view
  • Figures 7 and 8 an alternative inventive decoupling element as a single part in an oblique plan view and oblique bottom view.
  • FIG. 1 is as an embodiment, a valve in the form of an injection valve 1 for
  • the fuel injection valve 1 is part of the fuel injection device. This is with a downstream end
  • Fuel injection valve 1 which is designed in the form of a direct-injection injector for direct injection of fuel into a combustion chamber 25 of the internal combustion engine, installed in a receiving bore 20 of a cylinder head 9.
  • a sealing ring 2 in particular made of Teflon TM, ensures optimum sealing of the
  • the fuel injection valve 1 has at its inlet-side end 3 a plug connection to a fuel distributor line (fuel rail) 4, which is sealed by a sealing ring 5 between a connection piece 6 of the fuel distributor line 4, which is shown in section, and an inlet connection 7 of the fuel injection valve 1.
  • Fuel injection valve 1 is inserted into a receiving opening 12 of the connection piece 6 of the fuel distribution line 4.
  • the connecting piece 6 is in this case e.g. in one piece from the actual fuel distributor line 4 and has upstream of the receiving opening 12 a smaller diameter flow opening 15 through which the
  • the fuel injection valve 1 has an electrical connection plug 8 for the electrical contacting for actuating the fuel injection valve 1.
  • a holding-down device 10 is provided between the fuel injection valve 1 and the connecting piece 6.
  • the hold-down 10 is designed as a bow-shaped component, e.g. as punching-bending part.
  • the hold-down device 10 has a part-ring-shaped base element 11, from which a hold-down bar 13 extends, which abuts against a downstream end face 14 of the connecting piece 6 on the fuel distributor line 4 in the installed state.
  • the object of the invention is to achieve over the known insectsicitivation on the one hand in a simple manner improved noise attenuation, especially in noise-critical idling operation, by a targeted design and geometry of the intermediate element 24, and on the other hand, easy and inexpensive one
  • Tolerance compensation which allows tilting of the fuel injection valve by up to 1 °, and allow lateral force-free operation under the influence of temperature.
  • the relevant noise source of the fuel injection valve 1 in the direct high-pressure injection are introduced during the valve operation in the cylinder head 9 forces (structure-borne sound), which lead to a structural excitation of the cylinder head 9 and are emitted from this as airborne sound. To achieve a sound improvement, therefore, is one
  • Influencing the transmission behavior between the fuel injection valve 1 and the cylinder head 9 can be achieved.
  • the bearing of the fuel injection valve 1 can be mapped on the passive intermediate member 24 in the receiving bore 20 of the cylinder head 9 as a conventional spring-mass damper system, as shown in Figure 2.
  • the mass M of the cylinder head 9 can be assumed to be infinite compared to the mass m of the fuel injection valve 1 in the first approximation.
  • the transmission behavior of such a system is characterized by a gain at low frequencies in the range of the resonant frequency f R and an isolation range above the decoupling frequency f E (see FIG. 3).
  • the aim of the invention is the design of an intermediate element 24 among the priority
  • the invention comprises on the one hand the definition and design of a suitable spring characteristic taking into account the typical requirements and boundary conditions in direct fuel injection with variable operating pressure and on the other the design of an intermediate element 24 which is able to map the characteristic of the spring characteristic defined in this way and over a choice of simple geometric parameters to the specific constraints of the
  • Injection system can be adjusted.
  • the decoupling of the fuel injection valve 1 from the cylinder head 9 by means of a low spring stiffness c of the decoupling element 25 according to the invention which is annular, in particular a closed ring, and is designed like a cushion in cross-section, in addition to the small space by restricting the maximum permissible movement of the fuel injection valve 1 during the Motor operation difficult.
  • the vehicle typically experiences the following quasi-static load conditions:
  • the decoupling element 25 with its cushion-like cross-section over its annular course is further designed so that a lower, eg substantially flat end face 26 is provided on a shoulder 23 of the Receiving bore 20 rests in the cylinder head 9, and an upper end face 27 is provided which extends from radially outward to radially inwardly rising conically and has abutting contact with a spherically curved or conical or tapered shoulder surface 21 of the valve housing 22 of the fuel injection valve 1.
  • Decoupling element 25 in addition to its conical rise to have a spherical bulge, in which case there is a very large radius in the contact area.
  • FIG. 4 shows a cross section through an inventive decoupling element 25 in a mounting situation on a fuel injection valve 1 in the region of the disc-shaped intermediate element 24 shown in FIG. 1, the intermediate element 24 being replaced by the decoupling element 25 according to the invention.
  • the decoupling element 25 on its upper side, the conical or conical end face 27, which in the installed state with the spherical or spherical running, convex or conical
  • Shoulder surface 21 of the valve housing 22 of the fuel injection valve 1 corresponds.
  • the shoulder surface 21 of the valve housing 22 is formed on a radially outwardly projecting shoulder 28, which already provides for a certain chambering of the decoupling element 25 between itself and the shoulder 23 of the receiving bore 20.
  • the shoulder surface 21 of the valve housing 22 does not have to be continuously curved in a spherical manner; It suffices such a shape in the contact region with the conical end face 27 of the decoupling element 25.
  • Decoupling element 25 may be rounded.
  • End face 27 of the decoupling element 25 allows in conjunction with a
  • Decoupling element 25 are conceivable according to the invention.
  • a captive for the decoupling element 25 can take over a locking ring 29 which is disposed below the decoupling element 25 while the decoupling element 25 engages under a small distance and is fixed to the valve housing 22 of the fuel injection valve 1. In this way it can be ensured that the fuel injection valve 1 can be mounted as a structural unit together with the decoupling element 25 in the receiving bore 20.
  • Figure 5 shows an inventive decoupling element 25 as a single part in an oblique plan view.
  • the conical or conically extending upper end face 27 of the decoupling element 25 it can be seen as a special design feature that at least one guide element 30 projecting radially on the outer circumference projects, in particular between three and twelve guide elements 30 in the shape of a nose-like manner
  • FIG. 6 shows an optional locking ring 29 as a single part in an oblique plan view.
  • the locking ring 29 is designed for example as a closed ring, the in
  • the securing ring 29 can also be designed in a different construction and with a different distance to the decoupling element 25 on the outer circumference of the fuel injection valve. 1 be arranged.
  • the retaining ring 29 may be designed as a compact, solid, continuous plastic ring with different functional areas by its filigree outer contour.
  • An alternative decoupling element 25 is shown in FIGS. 7 and 8. A collar 38 projecting beyond the shoulder 23 of the receiving bore 20 in the direction of the securing ring 29 and running obliquely on the decoupling element 25 can be used even better
  • Guide element 39 may be provided on the outer diameter of the smaller diameter collar 38.
  • the guide element 39 is thus an outer cylindrical annular region of the collar 38, which corresponds to the wall of the receiving bore 20 in the cylinder head 9 below the shoulder 23 for radial positioning.
  • the radial guide elements 30 at the larger diameter are no longer required.
  • Decoupling element 25 in the receiving bore 20 is exactly inserted into this, it may be appropriate that instead of the guide elements 30 more, e.g. four, Vorzentriernasen 30a at the largest diameter of the decoupling element 25 are formed. With the collar 38 can be the captive of the decoupling element 25 over the
  • Circlip 29 geometrically and functionally optimally designed because it is inexpensive to manufacture and assemble, requires little space and allows a required clearance for slight pivoting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Le dispositif de désaccouplement selon l'invention pour dispositif d'injection de carburant est caractérisé en particulier en ce qu'il présente une structure silencieuse pivotante. Le dispositif d'injection de carburant comprend au moins un injecteur de carburant (1) et un orifice de réception (20) ménagé dans une culasse (9) pour injecteur de carburant (1), ainsi qu'un élément de désaccouplement (25) situé entre un carter (22) de l'injecteur (1) et une paroi de l'orifice de réception (20). L'élément de désaccouplement (25) est annulaire, en particulier en forme de bague fermée qui présente une face frontale inférieure (26) reposant sur un épaulement (23) de l'orifice de réception (20), et une face frontale supérieure (27) qui s'étend en montant de manière conique, radialement de l'extérieur vers l'intérieur, en contact d'appui avec une surface sphériquement bombée formant épaulement (21) du carter (22) de l'injecteur de carburant (1). Le dispositif d'injection de carburant convient en particulier pour l'injection directe de carburant dans une chambre de combustion d'un moteur à combustion interne à allumage commandé et à compression du mélange.
EP15781373.4A 2014-12-16 2015-10-19 Élément de désaccouplement pour dispositif d'injection de carburant Active EP3234345B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014225988.6A DE102014225988A1 (de) 2014-12-16 2014-12-16 Entkopplungselement für eine Brennstoffeinspritzvorrichtung
PCT/EP2015/074144 WO2016096200A1 (fr) 2014-12-16 2015-10-19 Élément de désaccouplement pour dispositif d'injection de carburant

Publications (2)

Publication Number Publication Date
EP3234345A1 true EP3234345A1 (fr) 2017-10-25
EP3234345B1 EP3234345B1 (fr) 2020-04-29

Family

ID=54329550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15781373.4A Active EP3234345B1 (fr) 2014-12-16 2015-10-19 Élément de désaccouplement pour dispositif d'injection de carburant

Country Status (7)

Country Link
US (1) US10641224B2 (fr)
EP (1) EP3234345B1 (fr)
JP (1) JP6612347B2 (fr)
KR (1) KR102447583B1 (fr)
CN (1) CN107110099B (fr)
DE (1) DE102014225988A1 (fr)
WO (1) WO2016096200A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016211689A1 (de) * 2016-06-29 2018-01-04 Robert Bosch Gmbh Injektor mit Dämpfungselement
DE102016225957A1 (de) * 2016-12-22 2018-06-28 Robert Bosch Gmbh Injektor mit verbesserter Sicherung
EP3470659B1 (fr) * 2017-10-13 2020-09-09 Vitesco Technologies GmbH Dispositif anti-retour pour soupape d'injection de carburant et soupape d'injection de carburant
DE102018220945A1 (de) * 2018-12-04 2020-06-04 Robert Bosch Gmbh Brennstoffeinspritzventil
US11105305B2 (en) * 2019-04-22 2021-08-31 Hitachi Astemo Americas, Inc. Fuel injector cup with flow restriction passage
DE102019216587A1 (de) * 2019-10-29 2021-04-29 Robert Bosch Gmbh Brennstoffeinspritzventil

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JPH0771428A (ja) * 1993-09-01 1995-03-17 Naniwa Sangyo Kk 異径管の接続方法
DE19735665A1 (de) * 1997-06-25 1999-01-07 Bosch Gmbh Robert Brennstoffeinspritzanlage
JPH11280618A (ja) 1998-03-26 1999-10-15 Denso Corp 燃料噴射弁のインシュレータ
US6009856A (en) 1998-05-27 2000-01-04 Caterpillar Inc. Fuel injector isolation
DE10027662A1 (de) 2000-06-03 2001-12-06 Bosch Gmbh Robert Dichtmittel und Niederhalter für ein Brennstoffeinspritzventil
DE10038763A1 (de) 2000-08-09 2002-02-21 Bosch Gmbh Robert Ausgleichselement für ein Brennstoffeinspritzventil
DE50110145D1 (de) 2001-01-12 2006-07-27 Ford Global Tech Inc Geraeuschreduzierende Anordnung von Unterlegscheiben unter einer Einspritzduese
DE10108194A1 (de) * 2001-02-21 2002-08-29 Bosch Gmbh Robert Dichtvorrichtung für ein Brennstoffeinspritzventil
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JP2009191920A (ja) 2008-02-13 2009-08-27 Toyota Motor Corp シールリング、ならびにシールリングの製造方法
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JP5400594B2 (ja) 2009-12-11 2014-01-29 株式会社水道技術開発機構 管路構成部材のフランジ接合構造
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Also Published As

Publication number Publication date
CN107110099B (zh) 2020-08-18
EP3234345B1 (fr) 2020-04-29
US20170328325A1 (en) 2017-11-16
JP2018500499A (ja) 2018-01-11
DE102014225988A1 (de) 2016-06-16
WO2016096200A1 (fr) 2016-06-23
US10641224B2 (en) 2020-05-05
KR102447583B1 (ko) 2022-09-28
JP6612347B2 (ja) 2019-11-27
KR20170093851A (ko) 2017-08-16
CN107110099A (zh) 2017-08-29

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