EP3054149B1 - Einrichtung zur festsetzung zumindest einer krafstoffeinspritzdüse - Google Patents

Einrichtung zur festsetzung zumindest einer krafstoffeinspritzdüse Download PDF

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Publication number
EP3054149B1
EP3054149B1 EP16000187.1A EP16000187A EP3054149B1 EP 3054149 B1 EP3054149 B1 EP 3054149B1 EP 16000187 A EP16000187 A EP 16000187A EP 3054149 B1 EP3054149 B1 EP 3054149B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection nozzle
retaining
fastening
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.)
Active
Application number
EP16000187.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3054149A1 (de
Inventor
Claus Brüstle
Rupert Baindl
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.)
Neander Motors AG
Original Assignee
Neander Motors AG
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 Neander Motors AG filed Critical Neander Motors AG
Publication of EP3054149A1 publication Critical patent/EP3054149A1/de
Application granted granted Critical
Publication of EP3054149B1 publication Critical patent/EP3054149B1/de
Active 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
    • F02M61/14—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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
    • 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
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa

Definitions

  • the invention relates to a device for fixing at least one fuel injection nozzle for an internal combustion engine according to the preamble of patent claim 1.
  • JPH03182680 A with which a fuel injection nozzle of an internal combustion engine is arranged in a bore of a cylinder head.
  • the device has a holding device which is designed in the manner of a two-armed lever and engages on the one hand with a first arm on a collar-like stop of the fuel injection nozzle and on the other hand with a second arm on a screw head of a cylinder head screw. Between the two arms extends a fastening screw which is screwed into a thread in the cylinder head and spans the fuel injector with the interposition of a seal against a stop in the bore of the cylinder head.
  • a nozzle tip of the fuel injection valve penetrates a passage opening in the cylinder head and is thereby connected to a combustion chamber of the internal combustion engine.
  • From the DE 195 54 065 A1 shows an assembly for mounting an injection nozzle in a holder, which is provided with a receiving opening for the injection nozzle.
  • a clamping element is attached at the injection nozzle.
  • the clamping element is connected to the holder in such a way that the injection nozzle rests against a stop in the receiving opening frictionally.
  • a sealing washer is installed between the injection nozzle and stop.
  • a nozzle tip of the injector penetrates a through hole in the holder, so that fuel can be introduced into a downstream combustion chamber.
  • the DE 26 49 357 indicates a connection of a fuel injection nozzle with a cylinder head of an internal combustion engine again.
  • the fuel injector rests with a guide shaft in a bore of the cylinder head. Outside the bore, a pressure piece acts on the fuel injection nozzle, so that said by means of a fastening screw Fuel injector is clamped in the axial direction against a stop in the bore. Central longitudinal axes of the fastening screws and the fuel injection nozzle run at a defined distance from one another.
  • the device with the holding device holds the fuel injection nozzle in exemplary fashion on the housing section of the internal combustion engine.
  • both the fuel injector with the holding device as well as the holding device with the housing portion in a simple way connect - easy is also the disassembly.
  • the realizable with expert skills holding device is mentioned in this context.
  • the structural design of the holding device with mounting flange, casing pot and mounting flange sets standards in the field of fixing fuel injectors.
  • At least the enveloping pot is formed by a rotationally symmetrical body to which the mounting flange and serving for axial and radial locking bushing are connected problem-free, serving to secure the fuel injector in the retaining sleeve commercially available feather keys.
  • a determination of the holding device according to the invention is when the fastening screws are arranged gleichichtex distributed on a circumferential center line of its mounting flange. An excellent connection of the holding device via the mounting flange and the fastening screws is achieved in that said holding device is fastened to the housing section which represents a valve cover of the internal combustion engine. An excellent interaction of the holding device with the fuel injector results when the existing example of resilient steel Covering pot in the axial direction has defined resilient properties.
  • the shroud is carried out according to the invention from the mounting flange in the direction of retaining sleeve in the manner of a converging conical shell.
  • the jacket of Hommelopfs is adjacent to the mounting flange in the direction of retaining sleeve provided with a first only over a partial length of the shell conical shell portion, extending from one end of the partial length of the shell to the retaining sleeve, a second shell portion.
  • a high-level further design of the holding device is achieved in that it is well suited for receiving two fuel injectors and has a first and a second Hüllopf with a first and a second retaining sleeve.
  • the first and the second enveloping pot are combined to form a structural unit produced substantially from one piece, which rests with a surrounding supporting flange on a corresponding receiving plane on the housing section that represents a valve cover.
  • this embodiment is complemented by the fact that adjacent to the receiving plane of the valve cover a cross-sectionally U-shaped groove is provided for receiving a sealing body, which is effective between the channel and the unit.
  • this holding device is specifically optimized by a single fastening screw is arranged in a central longitudinal plane between the first and the second Hüllopf, which is in operative connection with a thread of the cylinder head and the assembly holds the valve cover functionally in position.
  • a cylinder head 2 is shown, the two cam valves not shown, valves 3, 4 receives and is bolted to a valve cover 5.
  • the internal combustion engine 1 is designed as an outboard motor for driving a ship's propeller and installed in a boat.
  • This internal combustion engine has two parallel crankshafts which are aligned upright to a waterline of the boat. Both crankshafts are actuated by two reciprocating pistons which are reciprocated in horizontal bores of cylinders of a cylinder crankcase. Each reciprocating piston acts on said crankshafts with two connecting rods.
  • the internal combustion engine 1 operates in the diesel process, with direct injection; Type Common Rail. From the DE 10 2012 015 907 B3 The latter specific features of the internal combustion engine 1 with two parallel crankshafts with description and drawings represent plausible.
  • the direct injection comprises for the cylinder fuel injectors 8, 9, to whose fixing to the valve cover 5 of the internal combustion engine 1, a device 10 is provided, Fig. 2 ,
  • Each fuel injector 8 is at least partially inserted into a bore 11 of the cylinder head 2, the fuel injector 8 with a nozzle tip 12 a combustion chamber 13 between the cylinder head 2 and a reciprocating piston 14 supplies fuel.
  • the fuel injector 8 forms with a holding device 15 a, for example, preassembled unit 16 and the holding device 15 is fixedly connected by means of a screw 17 with a housing portion 18 of the internal combustion engine 1.
  • the holding device 15 -Version I- spans the fuel injection nozzle with the interposition of a sealing washer 19 against a stop 20 in the bore 11 of the cylinder head. 2
  • the holding device 15 has a casing nozzle 21 which surrounds the fuel injection nozzle 8 in regions and has a fastening flange 22 on a side facing away from the nozzle tip 12.
  • a holding bushing 23 is provided on the casing pot 21, which delimits a partial region 22 of the fuel injection nozzle 8 with a bore 24.
  • retaining bushing 23 and fuel injector 8 only schematically illustrated commercial feathers 25 are effective, whereby the fuel injector 8 is secured in the axial and radial directions.
  • a sealing body 25 ' is provided on a side facing the mounting flange 22, which is effective between a bore portion of the bore 24 and a shaft portion of the fuel injection nozzle 8 and prevents fuel leakage.
  • the enveloping pot 21 is a rotationally symmetrical body, which is made with the mounting flange 22 and the retaining sleeve 23 in one piece, Fig. 3 -; However, it is also conceivable to manufacture said parts separately from each other and then to assemble them.
  • the screw 17 comprises fastening screws 26, 27, 28, which are arranged uniformly distributed on a circumferential center line 29 of the annular mounting flange 22, and the holding device 15 on the valve cover 5 performing housing section 18 holds -. Fig. 2 -.
  • the enveloping pot 21, which projects into the valve cover 5, has defined resilient properties in the axial direction AA.
  • spring steel is suitable; but also the use of composite materials is possible for the production of said sheath pot.
  • the enveloping pot 21 is designed in the manner of a tapered conical jacket 30 from the fastening flange 22 in the direction of the retaining sleeve 23, being provided starting from the fastening flange 22 to the retaining sleeve 23 with a first jacket section 31 extending only over a partial length TI of the jacket 30. And from one end 32 of the partial length TI of the first jacket portion 31 extends to the retaining bushing 23, a second shell portion 33.
  • the first shell portion 31 includes with respect to a central longitudinal plane BB a smaller angle ⁇ than a corresponding angle ⁇ of the second shell portion 33rd
  • a holding device 34 is designed to accommodate two fuel injection nozzles 35, 36 -Version II- and consists of a first enveloping pot 37 and a second enveloping pot 38, which are connected to a first retaining sleeve 39 and a second retaining sleeve 40.
  • the first and second enveloping cups 37, 38 are combined by a frame 41 to form a substantially oval structural unit 42 made of metal, plastic or the like, e.g. and consists of one piece, e.g. is made by forming.
  • the assembly 42 and the frame 41 is provided with a circumferential support flange 43 which rests on a corresponding receiving plane 44 of a housing portion 45 in the form of a valve cover 46.
  • a cross-sectionally U-shaped groove 47 Adjacent to the receiving plane 44 of the valve cover 46 is a cross-sectionally U-shaped groove 47 is provided, wherein the cross section is inclined by 90 ° to the side.
  • the channel 47 serves to receive a sealing body 48, which is effective between channel 47 and frame 41 of the assembly 38.
  • a fastening screw 49 is provided in a central longitudinal plane C-C between the first enveloping pot 37 and the second enveloping pot 38, which is in operative connection with a thread 50 in a cylinder head 51 and holds the assembly 32 under tension on the valve cover 42 in position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP16000187.1A 2015-02-07 2016-01-27 Einrichtung zur festsetzung zumindest einer krafstoffeinspritzdüse Active EP3054149B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015001614.8A DE102015001614A1 (de) 2015-02-07 2015-02-07 Einrichtung zur Festsetzung zumindest einer Kraftstoffeinspritzdüse

Publications (2)

Publication Number Publication Date
EP3054149A1 EP3054149A1 (de) 2016-08-10
EP3054149B1 true EP3054149B1 (de) 2019-08-07

Family

ID=55237482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16000187.1A Active EP3054149B1 (de) 2015-02-07 2016-01-27 Einrichtung zur festsetzung zumindest einer krafstoffeinspritzdüse

Country Status (5)

Country Link
US (1) US20160230729A1 (es)
EP (1) EP3054149B1 (es)
JP (1) JP6742744B2 (es)
DE (1) DE102015001614A1 (es)
ES (1) ES2749105T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286059A (zh) * 2016-09-13 2017-01-04 中国北方发动机研究所(天津) 一种内燃机喷油器定位套结构
GB2620755A (en) * 2022-07-20 2024-01-24 Jcb Res Fuel injector seal

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT350854B (de) 1976-08-26 1979-06-25 List Hans Vorrichtung zur befestigung einer in einer bohrung eines zylinderkopfes einer brennkraft- maschine aufgenommenen kraftstoffeinspritzduese
JPS61549Y2 (es) * 1980-09-25 1986-01-09
JPH03182680A (ja) 1989-12-08 1991-08-08 Nissan Motor Co Ltd 燃料噴射ノズルの固定構造
DE19857485A1 (de) * 1998-12-14 2000-06-15 Bosch Gmbh Robert Montagevorrichtung zur Montage und Demontage eines Brennstoffeinspritzventils
DE19954065A1 (de) 1999-11-10 2001-05-23 Bosch Gmbh Robert Baugruppe zur Befestigung einer Einspritzdüse in einem Halter
JP2001140729A (ja) * 1999-11-17 2001-05-22 Yanmar Diesel Engine Co Ltd エンジンの燃料噴射弁取付構造
DE10007174A1 (de) * 2000-02-17 2001-08-30 Siemens Ag Spannelement mit optimierter Halteausnehmung
DE10109408A1 (de) * 2001-02-28 2002-09-05 Bosch Gmbh Robert Befestigungsvorrichtung
JP3997946B2 (ja) * 2002-07-26 2007-10-24 株式会社デンソー 燃料供給装置
EP1529955A1 (en) * 2003-11-06 2005-05-11 Renault s.a.s. Fuel injector clamping means
DE102005009118A1 (de) * 2005-03-01 2006-09-14 Dr.Ing.H.C. F. Porsche Ag Zylinderkopf für eine direkteinspritzende Brennkraftmaschine
EP2187039B1 (de) * 2005-03-03 2014-05-07 Robert Bosch GmbH Brennstoffeinspritzvorrichtung
US7334572B1 (en) * 2007-01-30 2008-02-26 Ford Global Technologies, Llc System and method for securing fuel injectors
DE102008009385A1 (de) * 2008-02-14 2009-08-27 Volkswagen Ag Brennkraftmaschine
US8047183B2 (en) * 2009-05-29 2011-11-01 Cummins Intellectual Properties, Inc. Fuel injector, clamping assembly and method of mounting a fuel injector
DE102012206890A1 (de) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Anordnung mit einem Brennstoffverteiler und mehreren Brennstoffeinspritzventilen
DE102012015907B3 (de) 2012-08-10 2013-10-17 Neander Motors Ag Hubkolbenbrennkraftmaschine, umfassend zumindest einen Hubkolben
EP2811113A1 (en) * 2013-06-06 2014-12-10 Caterpillar Global Mining Europe GmbH Modular cutting head
JP6514553B2 (ja) * 2014-06-18 2019-05-15 マルヤス工業株式会社 直噴エンジン用高圧燃料デリバリパイプアセンブリ
JP2016075192A (ja) * 2014-10-03 2016-05-12 トヨタ自動車株式会社 シリンダーヘッド

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
JP6742744B2 (ja) 2020-08-19
DE102015001614A1 (de) 2016-08-11
ES2749105T3 (es) 2020-03-19
JP2016145576A (ja) 2016-08-12
US20160230729A1 (en) 2016-08-11
EP3054149A1 (de) 2016-08-10

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