EP0387504A1 - Buse d'injection de carburant pour moteurs à combustion interne - Google Patents
Buse d'injection de carburant pour moteurs à combustion interne Download PDFInfo
- Publication number
- EP0387504A1 EP0387504A1 EP90101373A EP90101373A EP0387504A1 EP 0387504 A1 EP0387504 A1 EP 0387504A1 EP 90101373 A EP90101373 A EP 90101373A EP 90101373 A EP90101373 A EP 90101373A EP 0387504 A1 EP0387504 A1 EP 0387504A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle holder
- union nut
- connecting piece
- leakage oil
- nozzle
- 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.)
- Withdrawn
Links
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from 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
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the invention relates to a fuel injection nozzle according to the preamble of the main claim.
- a known injection nozzle of this type (DE-OS 29 43 745)
- connecting nipples for the leakage oil line are arranged laterally under the connecting piece for the fuel supply line on the nozzle holder.
- This version is characterized by a particularly short overall length of the nozzle holder. If the installation conditions are unfavorable, it can happen that the connection nipples for the drain line are difficult or not accessible at all.
- the arrangement according to the invention with the characterizing features of the main claim has the advantage that even in cases where the installation space for the injector is limited to the side, but also upwards, the connecting nipples for the leakage oil line are easily accessible.
- the transition of the leakage oil guide from the nozzle holder into the union nut can be sealed easily and securely if the leakage oil channel running in the nozzle holder opens out at an annular shoulder of the nozzle holder formed at the transition of the connecting piece to a cylindrical section and the union nut is provided with a collar-shaped attachment which is tightened when tightened Fuel supply line engages over the cylindrical section of the nozzle holder adjoining the connecting piece and delimits a leakage oil collecting space between itself and the nozzle holder, from which a leakage oil hole in the union nut next to its threaded bore leads to the connection nipple.
- a sufficiently large sealing ring can be conveniently accommodated between the collar-shaped extension of the union nut and the cylindrical section of the nozzle holder encompassed by it, without the diameter of the nozzle holder having to be enlarged.
- the injection nozzle has a nozzle holder 10, to which, as is customary and therefore not shown, a nozzle body is fastened, which is provided with a valve seat in front of a nozzle opening and slidably supports a valve needle which is pressed against the valve seat by a closing spring accommodated in the nozzle holder 10 is.
- the Nozzle holder 10 has a cylindrical section 12 of larger diameter which merges at an annular shoulder 14 into a cylindrical section 16 of smaller diameter, which in turn merges at a conical ring shoulder 18 into an externally threaded connecting piece 20 for a fuel supply line 22.
- a fuel channel 24 leads from the connecting piece 20 to a pressure space in the nozzle body surrounding the valve needle.
- a leakage oil channel 26 is connected to the closing spring chamber in the nozzle holder 10 and opens out from the nozzle holder 10 on the annular shoulder 18.
- the fuel supply line 22 is fastened to the nozzle holder 10 by a union nut 30 screwed onto the connecting piece 20 with the aid of a conical clamping piece 32 and the interposition of a sealing ring 34.
- the union nut 30 has a section 36 provided with wrench surfaces, to which an externally cylindrical threaded section 38 adjoins, which merges on the inside via a conical annular shoulder 39 into an axial annular collar 40 encompassing the cylindrical section 16 of the nozzle holder 10.
- an annular space 42 is formed between the annular shoulders 18 and 39 on the nozzle holder 10 and on the union nut 30, in which the leak oil supplied via the leak oil channel 26 collects.
- the annular gap between the cylindrical section 16 of the nozzle holder 10 and the ring collar 40 of the union nut 30 is sealed to the outside by an O-ring 44, which is seated in an annular groove in the nozzle holder 10.
- connection nipples 50 are provided on the end face 48 of the union nut 30 facing away from the nozzle holder 10, each of which is connected to the annular space 42 via a larger bore section 52 and a smaller bore section 54 in the union nut 30.
- the bore sections 52 cut between the union nut 30 and the parts used for tightening the fuel supply line 22 32, 34 formed annular space 56, so that the leak oil is also removed from this space.
- the connection nipples 50 can be inclined at an acute angle a to the nozzle axis 58 for easier access, which is chosen so that the connection nipples 50 do not hinder the insertion of a socket wrench on the union nut 30.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893907958 DE3907958A1 (de) | 1989-03-11 | 1989-03-11 | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
DE3907958 | 1989-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0387504A1 true EP0387504A1 (fr) | 1990-09-19 |
Family
ID=6376126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90101373A Withdrawn EP0387504A1 (fr) | 1989-03-11 | 1990-01-24 | Buse d'injection de carburant pour moteurs à combustion interne |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0387504A1 (fr) |
JP (1) | JPH02283856A (fr) |
DE (1) | DE3907958A1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2254654A (en) * | 1991-04-12 | 1992-10-14 | Daimler Benz Ag | Leakage fuel connection of an i.c.engine fuel injector. |
GB2314123A (en) * | 1996-06-14 | 1997-12-17 | Bosch Gmbh Robert | Fuel supply device for a fuel injection valve for an i.c. engines |
FR2783571A1 (fr) * | 1998-09-22 | 2000-03-24 | Bosch Gmbh Robert | Injecteur de carburant pour des moteurs a combustion interne |
FR2869652A1 (fr) * | 2004-04-28 | 2005-11-04 | Renault Sas | Dispositif d'etancheite haute pression |
EP1783357A1 (fr) * | 2005-11-02 | 2007-05-09 | Delphi Technologies, Inc. | Structure de connexion pour l'alimentation haute pression en carburant pour un injecteur |
WO2010118922A1 (fr) * | 2009-04-17 | 2010-10-21 | Delphi Technologies Holding S.À.R.L. | Dispositif de raccord pour système à fluide |
WO2019111031A1 (fr) * | 2017-12-08 | 2019-06-13 | Volvo Truck Corporation | Dispositif pour système d'injection de carburant à rampe de distribution commune |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10002365B4 (de) * | 2000-01-20 | 2005-12-01 | Siemens Ag | Einspritzsystem für Kraftstoffeinspritzanlagen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126158A (en) * | 1964-03-24 | Dreisin | ||
DE2943745A1 (de) * | 1979-10-30 | 1981-05-14 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzduese fuer brennkraftmaschinen |
DE3330771A1 (de) * | 1983-08-26 | 1985-03-14 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzeinrichtung mit hilfspumpe zur vor- und haupteinspritzung |
-
1989
- 1989-03-11 DE DE19893907958 patent/DE3907958A1/de not_active Withdrawn
-
1990
- 1990-01-24 EP EP90101373A patent/EP0387504A1/fr not_active Withdrawn
- 1990-03-09 JP JP5680390A patent/JPH02283856A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126158A (en) * | 1964-03-24 | Dreisin | ||
DE2943745A1 (de) * | 1979-10-30 | 1981-05-14 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzduese fuer brennkraftmaschinen |
DE3330771A1 (de) * | 1983-08-26 | 1985-03-14 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzeinrichtung mit hilfspumpe zur vor- und haupteinspritzung |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2254654A (en) * | 1991-04-12 | 1992-10-14 | Daimler Benz Ag | Leakage fuel connection of an i.c.engine fuel injector. |
GB2254654B (en) * | 1991-04-12 | 1994-04-27 | Daimler Benz Ag | A fuel injection nozzle for an internal combustion engine |
GB2314123A (en) * | 1996-06-14 | 1997-12-17 | Bosch Gmbh Robert | Fuel supply device for a fuel injection valve for an i.c. engines |
GB2314123B (en) * | 1996-06-14 | 1998-07-15 | Bosch Gmbh Robert | Fuel supply device for a fuel injection valve for internal combustion engines |
FR2783571A1 (fr) * | 1998-09-22 | 2000-03-24 | Bosch Gmbh Robert | Injecteur de carburant pour des moteurs a combustion interne |
FR2869652A1 (fr) * | 2004-04-28 | 2005-11-04 | Renault Sas | Dispositif d'etancheite haute pression |
EP1783357A1 (fr) * | 2005-11-02 | 2007-05-09 | Delphi Technologies, Inc. | Structure de connexion pour l'alimentation haute pression en carburant pour un injecteur |
WO2010118922A1 (fr) * | 2009-04-17 | 2010-10-21 | Delphi Technologies Holding S.À.R.L. | Dispositif de raccord pour système à fluide |
EP2243950A1 (fr) * | 2009-04-17 | 2010-10-27 | Delphi Technologies Holding S.à.r.l. | Agencement de connecteur pour système fluide |
US9109557B2 (en) | 2009-04-17 | 2015-08-18 | Delphi International Operations Luxembourg S.A.R.L. | Connector arrangement for a fluid system |
WO2019111031A1 (fr) * | 2017-12-08 | 2019-06-13 | Volvo Truck Corporation | Dispositif pour système d'injection de carburant à rampe de distribution commune |
US11136955B2 (en) | 2017-12-08 | 2021-10-05 | Volvo Truck Corporation | Device for a common rail fuel injection system |
Also Published As
Publication number | Publication date |
---|---|
JPH02283856A (ja) | 1990-11-21 |
DE3907958A1 (de) | 1990-09-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19910320 |