EP1797314A1 - Fuel injector on an internal combustion engine - Google Patents
Fuel injector on an internal combustion engineInfo
- Publication number
- EP1797314A1 EP1797314A1 EP05766805A EP05766805A EP1797314A1 EP 1797314 A1 EP1797314 A1 EP 1797314A1 EP 05766805 A EP05766805 A EP 05766805A EP 05766805 A EP05766805 A EP 05766805A EP 1797314 A1 EP1797314 A1 EP 1797314A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bore
- filter
- fuel
- injector
- fuel line
- 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.)
- Granted
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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/165—Filtering elements specially adapted in fuel inlets to injector
-
- 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
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
Definitions
- FIG. 1 shows a
- the injector 20 has a multipart injector body 28 in which the fuel injection valve 24 is arranged at its end region facing the combustion chamber of the cylinder.
- the fuel injection valve 24 has at least one injection valve member 30, which in a Bore 32 is slidably guided.
- the injection valve member 30 at least one, preferably a plurality of injection openings 34 distributed over the circumference of the injector 20 is controlled at the end of the injector body 28 projecting into the combustion chamber.
- Injection valve member 30 has, at its end region facing the combustion chamber, an approximately conical sealing surface 36, for example, which cooperates with an approximately cone-shaped valve seat 38 formed in the injector body 28 in its end region facing the combustion chamber, from or after which the injection openings 34 are discharged.
- an annular space 40 is present between the injection valve member 30 and the bore 32 toward the valve seat 38, which merges in its end region remote from the valve seat 38 by a radial widening of the bore 32 into a pressure chamber 42 surrounding the injection valve member 30.
- the injection valve member 30 has at the level of the pressure chamber 42 by a cross-sectional reduction to its sealing surface 36 toward a pressure shoulder 44.
- a prestressed closing spring 46 At the end remote from the combustion chamber of the injection valve member 30 engages a prestressed closing spring 46, through which 4 s injection valve member 30 is pressed with its sealing surface 36 to the valve seat 38.
- Fuel line 18 is an annular shoulder 74 is formed. On the end region of the fuel line 18, a hollow screw 76 is arranged, whose inner diameter is smaller than the outer diameter of the thickening 70 of the fuel line 18. The hollow screw 76 is with her
- the outer bore portion 63 of the filter bore 60 is separated from the inner bore portion 62, wherein only the inner bore portion 62, in which the fuel filter 64 is disposed, is subjected to high pressure, the seal by the against the sealing seat 66 pressed fuel line 18 takes place.
- the position of the further bore 68 and the sealing seat 66 can be selected independently of the position of the filter bore 60 depending on the space available.
- the further bore 68 into which the end region of the fuel line 18 dips, is formed in a protruding from the injector body 28 stub 80 which is provided with an external thread 81.
- the filter bore 60 penetrates the nozzle 80 of the
- the thickening 70 is arranged, which has the sealing surface 72 facing the sealing seat 66 and the annular shoulder 74 facing away from the latter.
- a sleeve 82 is arranged, whose inner diameter is smaller than the outer diameter of the thickening 70, so that the sleeve 82 comes with its front side in the axial direction of the annular shoulder 74 of the thickening 70 for conditioning.
- the sleeve 82 dips into the bore 68 together with the end portion of the fuel line 18.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004046888A DE102004046888A1 (en) | 2004-09-28 | 2004-09-28 | Injector for fuel injection on an internal combustion engine |
PCT/EP2005/053430 WO2006034890A1 (en) | 2004-09-28 | 2005-07-18 | Fuel injector on an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1797314A1 true EP1797314A1 (en) | 2007-06-20 |
EP1797314B1 EP1797314B1 (en) | 2008-04-16 |
Family
ID=34972640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05766805A Not-in-force EP1797314B1 (en) | 2004-09-28 | 2005-07-18 | Fuel injector on an internal combustion engine |
Country Status (7)
Country | Link |
---|---|
US (1) | US7878427B2 (en) |
EP (1) | EP1797314B1 (en) |
JP (1) | JP4532557B2 (en) |
AT (1) | ATE392547T1 (en) |
DE (2) | DE102004046888A1 (en) |
ES (1) | ES2302217T3 (en) |
WO (1) | WO2006034890A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006019308A1 (en) * | 2006-04-26 | 2007-10-31 | Robert Bosch Gmbh | Injector for fuel supply to internal combustion engine, especially in motor vehicle, has piezoactuator with foot on end remote from nozzle needle with sealing profile facing needle that contacts seal seat on injector body |
EP2090772B1 (en) * | 2008-02-15 | 2012-04-25 | Continental Automotive GmbH | Coupling assembly |
DE102008002528A1 (en) * | 2008-06-19 | 2009-12-24 | Robert Bosch Gmbh | Fuel injector |
AT509177B1 (en) * | 2009-11-23 | 2013-09-15 | Bosch Gmbh Robert | PRESSURE TUBE FITTINGS FOR COMMON RAIL INJECTION SYSTEM |
JP5218583B2 (en) * | 2011-03-09 | 2013-06-26 | 株式会社デンソー | Injector |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2897800A (en) * | 1956-05-18 | 1959-08-04 | Continental Motors Corp | Fuel injection nozzle construction and mounting |
US4111370A (en) * | 1977-04-08 | 1978-09-05 | Caterpillar Tractor Co. | Fuel inlet fitting for a fuel injection nozzle |
US4266728A (en) * | 1978-12-22 | 1981-05-12 | Ambac Industries, Incorporated | Leakless fuel injection nozzle and holder assembly |
DE3122883A1 (en) * | 1981-06-10 | 1983-01-05 | Volkswagenwerk Ag, 3180 Wolfsburg | Fuel injection system for an internal combustion engine |
DE4005774A1 (en) * | 1990-02-23 | 1991-08-29 | Bosch Gmbh Robert | IC engine fuel-injection nozzle - has coaxial thrust pins with fingers passing between each other and supporting springs |
DE19524520A1 (en) * | 1995-07-05 | 1997-01-09 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
JP3584554B2 (en) * | 1995-07-26 | 2004-11-04 | 株式会社デンソー | Accumulation type fuel injection device |
DE19547423B4 (en) * | 1995-12-19 | 2008-09-18 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
DE19608608A1 (en) * | 1996-03-06 | 1997-09-11 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE19832940A1 (en) * | 1998-07-22 | 2000-01-27 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine involves fuel feed channel running from connection to at least one injection aperture and in which rod-shaped fuel filter is inserted |
GB9823028D0 (en) * | 1998-10-22 | 1998-12-16 | Lucas Ind Plc | Fuel injector |
DE19850390A1 (en) * | 1998-11-02 | 2000-05-04 | Bosch Gmbh Robert | Holding body for a fuel injection valve for internal combustion engines |
GB9824272D0 (en) | 1998-11-06 | 1998-12-30 | Lucas Ind Plc | Filter |
DE10002715A1 (en) * | 2000-01-22 | 2001-07-26 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine; has central spring chamber and fuel supply channel with larger cross-section in circumferential direction than in radial direction |
US6729554B2 (en) * | 2000-10-05 | 2004-05-04 | Denso Corporation | Structure of fuel injector for avoiding injection of excess quantity of fuel |
DE10057683B4 (en) | 2000-11-21 | 2005-10-06 | Robert Bosch Gmbh | Fuel injection system |
ES2256333T3 (en) * | 2000-11-23 | 2006-07-16 | Robert Bosch Gmbh | MAGNETIC VALVE TO CONTROL AN INJECTION VALVE OF AN INTERNAL COMBUSTION ENGINE. |
ITTO20010969A1 (en) * | 2001-10-12 | 2003-04-12 | C R F Societa Con Sortile Per | IMPROVEMENTS TO A FUEL INJECTOR FOR ENDOTHERMAL ENGINES, WITH AN ELECTROMAGNETIC DOSING VALVE. |
US6719224B2 (en) * | 2001-12-18 | 2004-04-13 | Nippon Soken, Inc. | Fuel injector and fuel injection system |
JP3882661B2 (en) * | 2002-04-05 | 2007-02-21 | 株式会社デンソー | Fuel injection device |
ITBO20030678A1 (en) * | 2003-11-14 | 2005-05-15 | Magneti Marelli Powertrain Spa | FUEL INJECTOR WITH HYDRAULIC IMPLEMENTATION OF THE PIN |
-
2004
- 2004-09-28 DE DE102004046888A patent/DE102004046888A1/en not_active Withdrawn
-
2005
- 2005-07-18 ES ES05766805T patent/ES2302217T3/en active Active
- 2005-07-18 WO PCT/EP2005/053430 patent/WO2006034890A1/en active IP Right Grant
- 2005-07-18 JP JP2007533969A patent/JP4532557B2/en not_active Expired - Fee Related
- 2005-07-18 DE DE502005003776T patent/DE502005003776D1/en active Active
- 2005-07-18 US US11/576,180 patent/US7878427B2/en not_active Expired - Fee Related
- 2005-07-18 AT AT05766805T patent/ATE392547T1/en not_active IP Right Cessation
- 2005-07-18 EP EP05766805A patent/EP1797314B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2006034890A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502005003776D1 (en) | 2008-05-29 |
JP2008514856A (en) | 2008-05-08 |
DE102004046888A1 (en) | 2006-03-30 |
JP4532557B2 (en) | 2010-08-25 |
ATE392547T1 (en) | 2008-05-15 |
US7878427B2 (en) | 2011-02-01 |
WO2006034890A1 (en) | 2006-04-06 |
EP1797314B1 (en) | 2008-04-16 |
ES2302217T3 (en) | 2008-07-01 |
US20080093481A1 (en) | 2008-04-24 |
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