EP1347168A2 - Injecteur pour moteurs à combustion interne - Google Patents

Injecteur pour moteurs à combustion interne Download PDF

Info

Publication number: EP1347168A2
Authority: EP; European Patent Office
Prior art keywords: insert; housing; counterpart; injection injector; injector according
Prior art date: 2002-03-18
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

EP03001751A

Other languages

German (de)

English (en)

Other versions

EP1347168B1 (fr

EP1347168A3 (fr

Inventor

Hans-Joachim Koch

Wilhelm Malitsky

Horst Ressel

Wolfgang Scheibe

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.)

LOrange GmbH

Original Assignee

LOrange 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.)

2002-03-18

Filing date

2003-01-28

Publication date

2003-09-24

2002-03-18 Priority claimed from DE2002112002 external-priority patent/DE10212002C1/de

2003-01-28 Application filed by LOrange GmbH filed Critical LOrange GmbH

2003-09-24 Publication of EP1347168A2 publication Critical patent/EP1347168A2/fr

2005-01-05 Publication of EP1347168A3 publication Critical patent/EP1347168A3/fr

2006-03-29 Application granted granted Critical

2006-03-29 Publication of EP1347168B1 publication Critical patent/EP1347168B1/fr

2023-01-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
- 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

Definitions

the invention relates to an injection injector for internal combustion engines.
Construction include injectors known from WO 01/12981 A1 in series connection a nozzle part, a pilot part and an actuator in the form of a magnetic actuator. Will the Actuator energized, so a control room via the pilot part relieved of pressure, when the nozzle needle is pressurized of the nozzle part is pressurized in the direction of its closing direction is and is pressed with it.
the pilot part includes a control insert in which as a control element an elongated, slim valve rod is that between the actuator and one axially to the housing fixed counterpart extends.
Over the valve stem is one in the connection between control room and low pressure side lockable horizontal connection channel.
the valve stem points based on the size of the distance between an actuator Stop and the mouth controlled by the valve stem of the connecting channel a little oversize, so dimensioned is that it is due to the elastic compliance of the valve stem with control insert fitted between actuator and counterpart can be compared.
the control insert has a sleeve-like jacket that takes the guide for the valve rod and for its part inserted and fitted in the central housing bore and lies between the actuator and the nozzle part.
DE 195 24 520 A1 describes a fuel injection valve for Internal combustion engines are known, the valve holding body in the Housing of the internal combustion engine is used and its high pressure connection by also in the housing of the internal combustion engine inserted pressure pipe socket is formed, wherein the location hole for this pressure pipe socket on the Hole for the valve holder body opens and the pressure pipe socket clamped against the housing in the area of its free end is.
the bracing takes place via a clamping nut, the connects the pressure pipe socket to a subsequent pressure line, wherein the pressure line in a radially widened and conical in a corresponding receptacle of the pressure pipe socket engaging head piece runs out.
the tension nut is over a neck surrounding the pressure pipe socket in the receiving bore screwed and encloses for the pressure pipe socket with its nut head spaced from the head piece the pressure line, the pressure line between the nut head and the head piece enclosing deformation element that is as a sleeve is formed and over which the height of the clamping nut transferable axial clamping forces on the pressure pipe socket a predetermined limit is to be limited by plastic deformation of the deformation element when exceeded the elastic limit.
the invention is based, for a multi-part, axially braced injection injector a support for to find an application that guarantees the necessary axial minimum clamping force is a constructive limitation of the Clamping force allows upwards, and this also when mounting the Control insert as a prefabricated assembly unit and at under Production aspects advantageous coarse tolerances, without impairing the functionality of the Injector result, not even by the other Structure of the injection injector and its installation in the Tension caused by the internal combustion engine.
the housing forms one Stop for the nozzle part or an upstream of the nozzle part Counterpart that represents a transition element.
the nozzle part is twisted or a counterpart upstream of the nozzle part (transition element) against the housing, for example, in the context of the axial
the injector is clamped together, the nozzle part or the nozzle part and axially fixed the counterpart to the housing, so that about dimensioning the length of the support sleeve that in the initial state has an excess length, the tension of the insert ensured against the nozzle part or the upstream counterpart is.
the radial guide section for tax purposes is expedient formed by a radially protruding shoulder, so that a radially projecting shoulder as an attachment for the surrounding support sleeve, which expediently is thin-walled and opposite one shoulder the housing bore is supported.
the enclosing, and in particular Support designed as a sleeve preferably has in particular Sufficient radial play before the first assembly on, even with deformations going into the plastic area radial support forces acting on the insert to avoid.
the invention provides a structure for one Injector achieved by the use of its Fastening in the housing due to clamping forces is also kept free becomes as if due to the tension of the injector Forces.
This combined with the advantage that the assembly of the injection injector, in particular the introduction of the a pre-assembled unit forming insert in the mounting hole of the housing due to the design of the support no narrow tolerances in relation to the mounting hole conditional, because in connection with the tension of the Nozzle part or counterpart against the housing for use the desired axial position to the nozzle part or counterpart due yields the resilient support to the housing by itself.
the insert with the seat piece also wide limits in the length dimensioning of the insert it z. B. by using seat pieces of different heights or by removing material from the front of the respective seat.
an axially related to the nozzle part or counterpart as a stop surface positive installation tolerance of the insert for the assembly and the following resulting from the clamping over the support sleeve Tolerance compensation can be used to create a seal minimum supporting force required between insert and counterpart, to achieve a support force of a predetermined height. This, based on the situation with injectors, within Relatively wide tolerance limits above the positive Minimum tolerance required to the amount of the target Support force between nozzle part or counterpart and insert correlated, with the support according to the invention - within wide tolerance limits - including the level of the support forces due to the possible plastic deformation of the support sleeve can be limited.
the wall thickness of the support sleeve makes up a fraction of the diameter of the insert, so that for example on a diameter of the insert, or the socket of the insert in the order of 10 - 15 mm a wall thickness of about 1 mm is given.
the length is for the support sleeve is appropriate for a dimensioning when the one to is several times the diameter of the support sleeve, being for the The length of the support sleeve is two to four times its diameter represents an appropriate measurement relation.
Support sleeve also another, spatially usable accordingly Element are provided in a corresponding manner by elastic and / or elastoplastic compliance and / or deformability enable the necessary power transmission.
An exemplary embodiment is known in principle Modular injection injector 1 shown, whose injection-side end of a nozzle part 2 with a guided therein Nozzle needle 3 is formed.
a plate-shaped counterpart 5 to an as Control insert trained insert 7 Between the two-part Nozzle part 2 and the axially following housing 4 is - as an insert - a plate-shaped counterpart 5 to an as Control insert trained insert 7, the housing 4 in one central axial bore 6 receives.
the stake 7 centrally of a control element in the form of an elongated Valve rod 8 passes through one opposite arranged to the nozzle part 2 on the housing 4 and only schematically Actuator 9 shown is to be applied, which is preferred is designed as a magnetic actuator.
the valve stem can be in one piece or consist of several sections. Preferably the valve stem is made of two pieces.
a rod part is preferably made a material that has the same coefficient of thermal expansion like the housing and socket 10 of the insert 7 has.
the tour can, as shown, in one upper and a lower bearing bush 10 take place, the lower Bearing bush 10 represent a guide for both rod parts can.
wear-resistant Rod part can, however, also an additional third bearing bush be provided. Axial offsets between the guides and the valve seat can be guided separately by the lower one easily compensate for part of the rod.
the control insert 7 is shown in FIG. 2 shown enlarged.
insert 7 - as a prefabricated assembly unit that fits into the axial bore 6 is to be inserted - in the case of a cylindrical basic shape, a bush 10, in the central bore 11, the valve rod 8 via the bearing bushes 12 is slidably guided.
the Counterpart 5 associated end is the socket 10 centrally an inserted seat 13 provided in a known manner the seat for one of the valve rod 8 assigned Includes locking member.
the closing member can be one of the valve rod 8 separate part, such as. B. be a flat ball.
Closing member can also in or the valve rod 8 in multi-part design with molded valve contour (hemisphere, Sealing cone).
the seat piece 13 has a Bore as part of a connecting channel 14, which is in continues the counterpart 5 forming an insert.
the seat piece 13 thus forms a valve plate as a closing body of the Control insert 7, the one with the counterpart 5 the connecting channel 14 enclosing sealing boundary 16, which at sufficient axial tension between the insert 7 and the counterpart 5 is closed.
the support sleeve 17 is in contrast to what is not particularly apparent in the drawing, with radial play to the circumference of the socket 10 of the control insert 7 and / or to the corresponding area of the axial bore 6 of the Housing 4 arranged such that, based on short compression paths, changes caused by upsetting the support sleeve 17 no radial bracing in the wall thickness of the support sleeve 17 between the housing 4 and the insert 7 result.
the anchor rod 30 is on its over the end part 23 protruding end with the anchor plate 24 as a magnetic plate trained actuator 9 connected, the mediation a spacer 25 on the face against the housing 4 is screwed.
FIG. 1 further shows the high-pressure connection in a schematic manner 26 of the injector 1 and partially its channel connection 27 to the nozzle needle 3 or its pressure chamber 28 the nozzle needle 3 spring-loaded in the closing direction lies in the transition to the counterpart 5, a control chamber 29 which is throttled There is a connection to the inlet on the high pressure side and what only is partially shown, via the valve 14 comprising the channel 14 Connection to the low pressure side for introduction the injection is relieved of pressure.
control insert 7 forms a prefabricated assembly unit, which is both the initial assembly as any repairs are also easier.
the necessary adjustment of the control insert 7 as an assembly unit is achieved by using a support sleeve 17 in the axial Support of the control insert 7 in relation to the housing 4 much easier and especially requires one less tolerance effort.
Appropriate constructive Dimensioning of the support sleeve 17 provided, as well as a appropriate position of both shoulders 18 and 19, must only the housing 4 against the nozzle part 2 via the nozzle nut 31 braced, and in connection with this bracing the counterpart 5 results in a correct positioning the support sleeve 17, regardless of the predetermined tolerance deviations to a supporting force between counterpart 5 and support sleeve 17 leads, which corresponds to the specifications.
the tax insert 7 is an independent internal unit of the Injection injector 1 forms only in the area of the guide 20 is supported radially against the housing 1, but otherwise is not guided radially, other also remain on the Injection injector 1 external forces, in particular fastening forces, without influencing the set dimensions, in particular on the control insert 7, with which a precise Function of the injection injector is ensured overall. Only the air gap between the armature plate 24 and the magnetic base body can with a compression of the injector housing 4 Experiencing downsizing, however, this is easily done through an appropriate one Spacer 25 is to be compensated.
the structural dimensioning of the support sleeve 17 depends on the supporting force required for the sealing in the sealing limit 16 is to be applied, or after this supporting force on the material side for the support sleeve 17 corresponding voltage level.
the Pressures to be controlled with injection injectors reach up to the range of 2000 bar.
the drawing illustrates that also for mastering such pressures or for applying corresponding pressures Support forces relatively thin-walled support sleeves 17 are sufficient.
the one shown is made of steel Support sleeve 17 has an outer diameter of the sleeve 10 of about 12 mm has a wall thickness of about 1 mm and is one axial length of about 40 mm, radial non-contact.

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Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Fuel-Injection Apparatus (AREA)
Nonmetallic Welding Materials (AREA)

EP03001751A 2002-03-18 2003-01-28 Injecteur pour moteurs à combustion interne Expired - Lifetime EP1347168B1 (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE10212002		2002-03-18
DE2002112002 DE10212002C1 (de)	2002-03-18	2002-03-18	Einspritzinjektor für Brennkraftmaschinen
DE10259544		2002-12-19
DE10259544		2002-12-19

Publications (3)

Publication Number	Publication Date
EP1347168A2 true EP1347168A2 (fr)	2003-09-24
EP1347168A3 EP1347168A3 (fr)	2005-01-05
EP1347168B1 EP1347168B1 (fr)	2006-03-29

Family

ID=27789744

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP03001751A Expired - Lifetime EP1347168B1 (fr)	2002-03-18	2003-01-28	Injecteur pour moteurs à combustion interne

Country Status (3)

Country	Link
EP (1)	EP1347168B1 (fr)
AT (1)	ATE321946T1 (fr)
DE (1)	DE50302779D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2005108774A1 (fr) *	2004-05-10	2005-11-17	Siemens Aktiengesellschaft	Injecteur de carburant a ajustage rectifiable d'une course a vide d'une unite d'actionneur
WO2006012658A1 (fr) *	2004-08-06	2006-02-09	Robert Bosch Gmbh	Dispositif permettant l'injection de carburant dans la chambre de combustion d'un moteur a combustion interne
WO2008145330A1 (fr) *	2007-05-29	2008-12-04	L'orange Gmbh	Injecteur haute pression pour moteurs à combustion interne à appui de tige de commande à charge de flambage croissante par l'intermédiaire de carburant haute pression

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19524520A1 (de)	1995-07-05	1997-01-09	Bosch Gmbh Robert	Kraftstoffeinspritzventil für Brennkraftmaschinen
WO2001012981A1 (fr)	1999-08-17	2001-02-22	L'orange Gmbh	Soupape d'injection pour moteur a combustion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE59606610D1 (de) *	1995-06-02	2001-04-26	Ganser Hydromag Ag Zuerich	Brennstoffeinspritzventil für Verbrennungskraftmaschinen
DE19820341C2 (de) *	1998-05-07	2000-04-06	Daimler Chrysler Ag	Betätigungsvorrichtung für eine Hochdruck-Einspritzdüse für flüssige Einspritzmedien

2003
- 2003-01-28 AT AT03001751T patent/ATE321946T1/de active
- 2003-01-28 DE DE50302779T patent/DE50302779D1/de not_active Expired - Lifetime
- 2003-01-28 EP EP03001751A patent/EP1347168B1/fr not_active Expired - Lifetime

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19524520A1 (de)	1995-07-05	1997-01-09	Bosch Gmbh Robert	Kraftstoffeinspritzventil für Brennkraftmaschinen
WO2001012981A1 (fr)	1999-08-17	2001-02-22	L'orange Gmbh	Soupape d'injection pour moteur a combustion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2005108774A1 (fr) *	2004-05-10	2005-11-17	Siemens Aktiengesellschaft	Injecteur de carburant a ajustage rectifiable d'une course a vide d'une unite d'actionneur
WO2006012658A1 (fr) *	2004-08-06	2006-02-09	Robert Bosch Gmbh	Dispositif permettant l'injection de carburant dans la chambre de combustion d'un moteur a combustion interne
KR100822955B1 (ko) *	2004-08-06	2008-04-16	로베르트 보쉬 게엠베하	내연기관의 연소 챔버 내부로 연료를 분사하는 장치
WO2008145330A1 (fr) *	2007-05-29	2008-12-04	L'orange Gmbh	Injecteur haute pression pour moteurs à combustion interne à appui de tige de commande à charge de flambage croissante par l'intermédiaire de carburant haute pression

Also Published As

Publication number	Publication date
ATE321946T1 (de)	2006-04-15
DE50302779D1 (de)	2006-05-18
EP1347168B1 (fr)	2006-03-29
EP1347168A3 (fr)	2005-01-05

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EP1118765A2 (fr)	2001-07-25	Injecteur de combustible pour moteur à combustion interne
DE10138756A1 (de)	2003-02-20	Kraftstoffhochdruckspeicher
EP2116717B1 (fr)	2011-09-28	Injecteur de carburant
EP2201240B1 (fr)	2012-12-19	Injecteur
EP3478957A1 (fr)	2019-05-08	Soupape d'injection d'un carburant gazeux
DE102016205358A1 (de)	2017-10-05	Injektor zum Einblasen eines gasförmigen Brennstoffs in einen Brennraum
DE102008002717A1 (de)	2010-01-14	Kraftstoffinjektor mit zweiteiligem Magnetanker
EP2084392A1 (fr)	2009-08-05	Injecteur de carburant
EP2310662A1 (fr)	2011-04-20	Injecteur de combustible
DE102008035087B4 (de)	2015-02-12	Einspritzventil
EP0990792A2 (fr)	2000-04-05	Système d'injection de carburant de type Common-Rail
EP1347168B1 (fr)	2006-03-29	Injecteur pour moteurs à combustion interne
DE19940300A1 (de)	2001-03-01	Steuerventil für einen Injektor
DE10212002C1 (de)	2003-08-21	Einspritzinjektor für Brennkraftmaschinen
EP2156044B1 (fr)	2012-10-31	Injecteur comprenant une soupape de commande à compensation de pression
DE10132756B4 (de)	2005-01-27	Stellglied für Schaltelemente von Kraftstoff-Einspritzvorrichtungen
DE10212876A1 (de)	2003-10-23	Einrichtung zur Schwingungsdämpfung an Kraftstoffeinspritzsystemen mit Hochdrucksammelraum
DE10147830B4 (de)	2008-05-08	Kraftstoffinjektor
EP1775460A1 (fr)	2007-04-18	Soupape d'injection de carburant avec une marquage pour aider un positionnement
EP2226490B1 (fr)	2011-12-28	Injecteur de carburant
DE10132450A1 (de)	2003-01-23	Kraftstoffeinspritzventil für Brennkraftmaschinen
EP2084390A1 (fr)	2009-08-05	Injecteur avec une soupape de commande à compensation de pression axiale
EP1898083B1 (fr)	2010-05-12	Injecteur pour une installation à injection de carburant
DE102009029116A1 (de)	2011-03-03	Kraftstoffeinspritzvorrichtung

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