EP1260706A2 - Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne - Google Patents

Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne Download PDF

Info

Publication number: EP1260706A2
Authority: EP; European Patent Office
Prior art keywords: injector; support ring; clamping claw; combustion engine; internal combustion
Prior art date: 2001-05-25
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

EP02008631A

Other languages

German (de)

English (en)

Other versions

EP1260706B1 (fr

EP1260706A3 (fr

Inventor

Wolfgang Braun

Peter Grabandt

Heinz-Bernd Haiser

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.)

2001-05-25

Filing date

2002-04-17

Publication date

2002-11-27

2002-04-17 Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH

2002-11-27 Publication of EP1260706A2 publication Critical patent/EP1260706A2/fr

2008-02-20 Publication of EP1260706A3 publication Critical patent/EP1260706A3/fr

2009-03-25 Application granted granted Critical

2009-03-25 Publication of EP1260706B1 publication Critical patent/EP1260706B1/fr

2022-04-17 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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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

Definitions

the invention is based on a fastening device of an injector of a fuel injector an internal combustion engine according to the preamble of claim 1.
Such a fastening device is described in EP 0 957 263 A1 known.
This fastener is on Injector a transverse to its longitudinal axis Support surface arranged directly in the outer jacket of the Injector is formed by a stage.
a clamp on the internal combustion engine for example a cylinder head is attached, for example by means of a screw connection.
the injector is clamped in the direction of its longitudinal axis pressed against a stop on the internal combustion engine.
the bearing surface must be of sufficient size to allow the surface pressure caused by the clamping claw increases slightly hold and a secure support of the clamping claw sure. As a result, the outside diameter must of the injector can also be made correspondingly large.
the fastening device with the Features according to claim 1 has the advantage that the injector also covers part of its circumference limited space can be installed. Doing so first the injector with the one pre-assembled on it Support ring at the intended location on the Internal combustion engine arranged. The injector points a small outer diameter, so that this one disturbing component can pass. Then the Support ring pushed onto the injector, whereby open peripheral area to the disruptive component is arranged so that the support ring on this component can be pushed past to the support ring. Then the support ring is rotated so that the the intended position on this arranged support surface takes and the clamp is attached.
the training according to claim 4 ensures that the contact surface is correctly arranged and the Clamping claw cannot slide off this.
FIG. 1 shows a section of a Internal combustion engine with an injector arranged thereon in a longitudinal section
Figures 2 to 5 a Installation sequence of a fastening device of the injector
FIG. 6 shows a perspective illustration of parts of the Fastening device.
FIG 1 is an internal combustion engine shown for example of a motor vehicle.
the in Figure 1 is part of a section Cylinder head 11 of the internal combustion engine, wherein in the An injector 12 is inserted into a cylinder head 10 in the cylinder head which is also shown only in sections.
the Injector 12 has an approximately cylindrical outer contour, if necessary with a stepped diameter.
the injector 12 is part of a fuel injector of FIG Internal combustion engine and this is a hydraulic one Connection for the supply of fuel under high pressure to the injector 12, the injector 12 providing the supplied fuel into a combustion chamber Internal combustion engine is injected. On the injector 12 can a further hydraulic connection is also provided be discharged by the fuel from the injector 12 again becomes.
the bore 10 is stepped in diameter, so that an annular shoulder 18 is formed in this the injector 12 with one on it stepped through the Diameter formed shoulder 20 in the direction of his Longitudinal axis 13 comes to rest.
the annular shoulder 18 forms thus a stop on the injector 12 when inserted in the bore 10 in the direction of its longitudinal axis 13 for Facility is coming.
a camshaft arranged through which the gas exchange valves the internal combustion engine can be controlled, wherein between the Camshaft and the gas exchange valves for example Rocker arms 22 are provided.
the rocker arms 22 are there arranged near the bore 10 and extend over part the circumference close to the injector 12 so that between the injector 12 and the rocker arm 22 only one little distance remains.
the injector 12 protrudes with part of its longitudinal extent out of the bore 10 and has one in this part circumferential annular groove 24.
annular groove 24 is part a fastening device of the injector 12 an elastic expandable support ring 26 inserted, which is preferably in Form of a conventional snap ring or spring ring is.
the support ring 26 is elastically expanded State pushed onto the injector 12 and snaps through its internal stress in the annular groove 24. If the Support ring 26 is arranged in the annular groove 24, it projects with part of its thickness over that of the annular groove 24 subsequent outer jacket of the injector 12.
the Support ring 26 can be in place before the injector 12 is inserted be mounted in the bore 10 or alternatively after Insert the injector 12 into the bore 10 become.
the injector 12 is inserted into the Bore 10 as a further part of the fastening device Support ring 30 pushed on.
the support ring 30 is over a portion 32 of its circumference is open and in stepped its inner diameter.
By the stepped inner diameter in the support ring 30 is an in Direction of the longitudinal axis 13 of the injector 12 from the Bore 10 projecting free end of the injector 12 technological Ring shoulder 34 formed.
the support ring 30 is as in Longitudinal section according to Figure 2 and in the view in Arrow direction III shown in Figure 3 in a Rotary position on the injector 12 from its free end postponed, in the open peripheral area 32 thereof
Rocker arm 22 is arranged so that the support ring 30th can get past the rocker arm 22.
the size of the open The peripheral region 32 of the support ring 30 is determined in such a way that the support ring 30 can pass the rocker arm 22.
the support ring 30 has passed the rocker arm 22, he can on the injector 12 about its longitudinal axis 13th are rotated so that the open peripheral region 32 does not is arranged more towards the rocker arm 22, as shown in FIG 4 is shown with the arrow.
the transverse preferably runs perpendicular to the longitudinal axis 13 of the injector 12.
the clamping claw 40 is approximately L-shaped curved and has a side next to it the injector 12 arranged towards the internal combustion engine 11 extending end portion 42 on the underside has a contact surface 43 with which the end region 42 in Direction of the longitudinal axis 13 of the injector 12 on a support 44 comes to the system to the system.
the Contact surface 43 can, for example, at least approximately be spherically curved.
the other end area 46 of the clamping claw 40 extends approximately perpendicular to Longitudinal axis 13 of the injector 12 and is fork-shaped trained so that the injector 12 on a part encompasses its circumference.
the end region 46 of the clamping claw 40 comes with its underside 48 on the bearing surface 36 the support ring 30 to the system.
the bottom 48 of the End region 46 of the clamping claw 40 can be convex, for example be arched.
a bore 50 is provided in this through which one Screw 52 is inserted in a threaded bore 54 in the internal combustion engine is screwed in.
the clamping claw 40 extends over its end region 46, with its underside 48 on the support surface 36 of the support ring 30 rests on the support ring 30, which is in turn is supported on the injector 12 via the support ring 26 thus by means of the clamping claw 40 with its ring shoulder 20 against the annular shoulder 18 in the bore 10 as a stop is pressed so that the injector 12 on the Internal combustion engine is attached.
Avoiding clamping claw 40 Protection against rotation for the support ring 30 is provided.
the anti-rotation device is in the clamping claw 40 on the one hand by at least one and on the other hand engaging in the support ring 30
Dowel pin 60 formed.
two dowel pins 60 are provided, which in the circumferential direction of the Support rings 30 are arranged offset from one another.
the Clamping claw 40 has next to the bore 50 through which the screw 52 is inserted through the Engine bottom facing two more Bores 62, in each of which one of the dowel pins 60 is pressed.
the support ring 30 has in its Outer jacket corresponding to two recesses 64 which in Cross-section at least approximately in the form of a segment of a circle are formed, in which the dowel pins 60 engage.
the Recesses 64 are on both sides of the open peripheral area 32 of the support ring 30 arranged close to this. In the Assembly of the clamping claw 40 occur protruding from this Dowel pins 60 in the recesses 64 of the support ring 30 a, the support ring 30 in a by the location the dowel pins 60 must be in the predetermined rotational 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)

EP20020008631 2001-05-25 2002-04-17 Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne Expired - Lifetime EP1260706B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10125440		2001-05-25
DE2001125440 DE10125440A1 (de)	2001-05-25	2001-05-25	Befestigungseinrichtung eines Injektors einer Kraftstoffeinspritzeinrichtung an einer Brennkraftmaschine

Publications (3)

Publication Number	Publication Date
EP1260706A2 true EP1260706A2 (fr)	2002-11-27
EP1260706A3 EP1260706A3 (fr)	2008-02-20
EP1260706B1 EP1260706B1 (fr)	2009-03-25

Family

ID=7686058

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20020008631 Expired - Lifetime EP1260706B1 (fr)	2001-05-25	2002-04-17	Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne

Country Status (2)

Country	Link
EP (1)	EP1260706B1 (fr)
DE (2)	DE10125440A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2887303A1 (fr) *	2005-06-20	2006-12-22	Renault Sas	Dispositif de fixation d'un injecteur sur un carter chapeau palier
WO2008009842A1 (fr) *	2006-07-21	2008-01-24	Peugeot Citroën Automobiles SA	Fourchette de maintien d'un porte-injecteur de moteur thermique
EP2578868A1 (fr) *	2011-10-06	2013-04-10	Schaeffler Technologies AG & Co. KG	Système de montage pour une buse d'injection de carburant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202015000804U1 (de) *	2015-02-02	2016-05-03	GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware)	Kraftstoffinjektor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0957263A1 (fr)	1998-05-09	1999-11-17	Perkins Engines Company Limited	Bride de fixation d'un injecteur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2308261A1 (de) *	1973-02-20	1974-08-22	Bosch Gmbh Robert	Kraftstoffeinspritzduese
FR2762051B1 (fr) *	1997-04-10	1999-05-21	Peugeot	Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne
FR2763379B1 (fr) *	1997-05-16	1999-07-16	Renault	Bride de fixation d'un injecteur

2001
- 2001-05-25 DE DE2001125440 patent/DE10125440A1/de not_active Withdrawn
2002
- 2002-04-17 EP EP20020008631 patent/EP1260706B1/fr not_active Expired - Lifetime
- 2002-04-17 DE DE50213375T patent/DE50213375D1/de not_active Expired - Lifetime

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0957263A1 (fr)	1998-05-09	1999-11-17	Perkins Engines Company Limited	Bride de fixation d'un injecteur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2887303A1 (fr) *	2005-06-20	2006-12-22	Renault Sas	Dispositif de fixation d'un injecteur sur un carter chapeau palier
WO2008009842A1 (fr) *	2006-07-21	2008-01-24	Peugeot Citroën Automobiles SA	Fourchette de maintien d'un porte-injecteur de moteur thermique
FR2904059A1 (fr) *	2006-07-21	2008-01-25	Peugeot Citroen Automobiles Sa	Fourchette de maintien d'un porte-injecteur de moteur thermique.
EP2578868A1 (fr) *	2011-10-06	2013-04-10	Schaeffler Technologies AG & Co. KG	Système de montage pour une buse d'injection de carburant

Also Published As

Publication number	Publication date
DE10125440A1 (de)	2002-11-28
DE50213375D1 (de)	2009-05-07
EP1260706B1 (fr)	2009-03-25
EP1260706A3 (fr)	2008-02-20

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