EP1276987A1 - Soupape d'injection de carburant pour moteurs a combustion interne - Google Patents
Soupape d'injection de carburant pour moteurs a combustion interneInfo
- Publication number
- EP1276987A1 EP1276987A1 EP01940145A EP01940145A EP1276987A1 EP 1276987 A1 EP1276987 A1 EP 1276987A1 EP 01940145 A EP01940145 A EP 01940145A EP 01940145 A EP01940145 A EP 01940145A EP 1276987 A1 EP1276987 A1 EP 1276987A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve member
- bore
- piston
- combustion chamber
- 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- Withdrawn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
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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
- 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
-
- 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
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
- F02M61/163—Means being injection-valves with helically or spirally shaped grooves
Definitions
- the high pressure in the pressure chamber results in a fuel leakage oil flow from the pressure chamber through the annular channel formed between the first radial extension and the bore, despite the slight play of the first radial expansion of the valve member guided in the bore.
- This leak oil flow is fed to a leak oil chamber and from there to a leak oil system.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
L'invention concerne une soupape d'injection de carburant comportant un corps soupape (1) déformé axialement contre un corps de maintien de soupape (3), ainsi qu'un perçage (5) fermé sur l'extrémité côté chambre de combustion et présentant un siège de soupape (32) et au moins une ouverture d'injection (34) sur ladite extrémité. Un élément soupape (10) en forme de piston est disposé dans le perçage (5), ledit élément soupape étant guidé dans le perçage (5) avec une première (110) et une deuxième extension (210) radiales. L'élément soupape (10) entoure une chambre de pression (23) pouvant être remplie de carburant, ladite chambre de pression s'étendant vers le siège de soupape (32) en tant que canal annulaire entourant l'élément soupape (10). Sur le côté opposé à la chambre de combustion par rapport à l'élément soupape (10), le perçage (5) comporte un piston à soupape (12) étanchéifiant la chambre de pression (23) et s'appuyant contre l'élément soupape (10). La première extension radiale (110) présente dans le perçage (5) un jeu supérieur à la deuxième extension radiale (210) de manière que le frottement de l'élément soupape (10) est réduit lors du mouvement longitudinal. La première extension radiale (110) ne sert plus qu'au guidage tandis que l'étanchéification de la chambre de pression (23) est effectuée par le piston à soupape (12), et donc par un composant séparé de l'élément soupape (10).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019153 | 2000-04-18 | ||
DE10019153A DE10019153A1 (de) | 2000-04-18 | 2000-04-18 | Kraftstoffeinspritzventil für Brennkraftmaschinen |
PCT/DE2001/001408 WO2001079688A1 (fr) | 2000-04-18 | 2001-04-10 | Soupape d'injection de carburant pour moteurs a combustion interne |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1276987A1 true EP1276987A1 (fr) | 2003-01-22 |
Family
ID=7639153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01940145A Withdrawn EP1276987A1 (fr) | 2000-04-18 | 2001-04-10 | Soupape d'injection de carburant pour moteurs a combustion interne |
Country Status (7)
Country | Link |
---|---|
US (1) | US20020104901A1 (fr) |
EP (1) | EP1276987A1 (fr) |
JP (1) | JP2003531338A (fr) |
KR (1) | KR20020023235A (fr) |
CZ (1) | CZ20014481A3 (fr) |
DE (1) | DE10019153A1 (fr) |
WO (1) | WO2001079688A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030201344A1 (en) * | 2002-04-15 | 2003-10-30 | Christopher Wark | Nozzle assembly for injecting fuel at multiple angles |
DE10217714A1 (de) * | 2002-04-20 | 2003-11-06 | Bosch Gmbh Robert | Injektor-Dichtungsanordnung mit Dichthülse |
JP4552890B2 (ja) * | 2006-05-11 | 2010-09-29 | 株式会社デンソー | インジェクタ |
DE102008001330A1 (de) * | 2008-04-23 | 2009-10-29 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE102009000206A1 (de) * | 2009-01-14 | 2010-07-15 | Robert Bosch Gmbh | Kraftstoffinjektor für Brennkraftmaschinen |
DE102010042688A1 (de) * | 2010-10-20 | 2012-04-26 | Robert Bosch Gmbh | Kraftstoffinjektor |
DE102011081176A1 (de) | 2011-08-18 | 2013-02-21 | Robert Bosch Gmbh | Ventil zum Zumessen eines strömenden Mediums |
SE545024C2 (en) * | 2019-10-01 | 2023-02-28 | Scania Cv Ab | Fuel injector arrangement for an internal combustion engine and method for operating said arrangement |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR473174A (fr) * | 1913-06-11 | 1915-01-05 | George William Heimrod | Redresseur de courant à vapeur de mercure |
US2974881A (en) * | 1955-09-30 | 1961-03-14 | Bendix Corp | Fuel injection nozzle |
DE2711350A1 (de) * | 1977-03-16 | 1978-09-21 | Bosch Gmbh Robert | Kraftstoffeinspritzduese fuer brennkraftmaschinen |
GB8628600D0 (en) * | 1986-11-29 | 1987-01-07 | Lucas Ind Plc | Fuel injection nozzles |
JPH01187363A (ja) * | 1988-01-21 | 1989-07-26 | Toyota Motor Corp | 内燃機関用燃料噴射弁 |
JP2705339B2 (ja) * | 1991-02-26 | 1998-01-28 | 日産自動車株式会社 | 燃料噴射ノズル |
DK171975B1 (da) * | 1994-02-07 | 1997-09-01 | Man B & W Diesel Gmbh | Brændselsinjektor til en stor totakts forbrændingsmotor |
DE19504849A1 (de) * | 1995-02-15 | 1996-08-22 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
DE19756986C1 (de) * | 1997-12-20 | 1999-06-02 | Daimler Chrysler Ag | Speichereinspritzsystem |
GB9920144D0 (en) * | 1999-08-26 | 1999-10-27 | Lucas Industries Ltd | Fuel injector |
US6357677B1 (en) * | 1999-10-13 | 2002-03-19 | Siemens Automotive Corporation | Fuel injection valve with multiple nozzle plates |
-
2000
- 2000-04-18 DE DE10019153A patent/DE10019153A1/de not_active Withdrawn
-
2001
- 2001-04-10 JP JP2001577057A patent/JP2003531338A/ja active Pending
- 2001-04-10 US US10/018,315 patent/US20020104901A1/en not_active Abandoned
- 2001-04-10 EP EP01940145A patent/EP1276987A1/fr not_active Withdrawn
- 2001-04-10 CZ CZ20014481A patent/CZ20014481A3/cs unknown
- 2001-04-10 KR KR1020017016187A patent/KR20020023235A/ko not_active Application Discontinuation
- 2001-04-10 WO PCT/DE2001/001408 patent/WO2001079688A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0179688A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20020104901A1 (en) | 2002-08-08 |
JP2003531338A (ja) | 2003-10-21 |
CZ20014481A3 (cs) | 2003-03-12 |
DE10019153A1 (de) | 2001-10-25 |
WO2001079688A1 (fr) | 2001-10-25 |
KR20020023235A (ko) | 2002-03-28 |
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Legal Events
Date | Code | Title | Description |
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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 |
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17P | Request for examination filed |
Effective date: 20021118 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
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: 20041103 |