EP2396536A1 - Einspritzventil - Google Patents
EinspritzventilInfo
- Publication number
- EP2396536A1 EP2396536A1 EP09774677A EP09774677A EP2396536A1 EP 2396536 A1 EP2396536 A1 EP 2396536A1 EP 09774677 A EP09774677 A EP 09774677A EP 09774677 A EP09774677 A EP 09774677A EP 2396536 A1 EP2396536 A1 EP 2396536A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- injection valve
- valve
- plastic extrusion
- sleeve
- 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
- F02M61/168—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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9038—Coatings
Definitions
- the invention is based on an injection valve for the metered spraying of a fluid, in particular fuel, according to the preamble of claim 1.
- a known fuel injection valve (DE 197 44 739 A1) has a composite of several parts housing, part of which is formed by an inlet port with a fuel inlet and a part of a diameter-stepped sleeve.
- the tubular inlet nozzle dips into the larger diameter sleeve portion of the sleeve and partially into the smaller diameter sleeve portion of the sleeve and carries on its immersion end one
- Magnetic coil of a valve needle driving electromagnet which is fixedly connected to the valve needle magnet armature in the immersed into the smaller diameter sleeve portion end of the inlet nozzle axially displaceable.
- the open end of the smaller diameter sleeve portion is terminated by a valve body having a valve opening surrounding it
- Valve seat is formed. With the valve seat acts formed at the end of the valve needle closing head for releasing and closing the valve opening together.
- the valve body is followed by a spray-orifice plate.
- the portion of the inlet nozzle protruding from the sleeve is enclosed by a plastic extrusion which covers the opening of the larger diameter sleeve portion of the sleeve and terminates at a distance from the inlet-side end of the inlet nozzle.
- a connector for a solenoid coil of the electromagnet is poured.
- the fuel injection valve is inserted into a valve seat in the cylinder head of an internal combustion engine and sealed against the wall of the valve seat by means of two sealing rings.
- a lower sealing ring is in an abspritz- side, lower end of the smaller diameter sleeve portion of the sleeve existing annular groove added and pushed an upper sealing ring on the protruding from the plastic extrusion, inlet-side upper end of the inlet nozzle.
- the upper sealing ring presses after installation of the injection valve in the valve seat on the annular end face of
- the injection valve according to the invention with the features of claim 1 has the advantage that the additional sealing of the lower attachment point of the plastic extrusion on the housing of the injection valve, an absolute tightness of the injector is ensured in the long term and in the housing interior, e.g. on the solenoid, no corrosion damage.
- the injector is thus "water-proof", i.e. insensitive to immersion in water, sludge and the like, as required for off-highway and commercial vehicles.
- the additional sealing of the housing is realized by a lower cuff between housing and Kunststoffumspritzung cross-sealing sleeve, on the one hand on the plastic extrusion and on the other hand pressed onto the housing.
- a lower cuff between housing and Kunststoffumspritzung cross-sealing sleeve on the one hand on the plastic extrusion and on the other hand pressed onto the housing.
- the plastic extrusion is provided near its upper end with a circumferential outer groove and inserted into the outer groove, a sealing ring for sealing against the valve seat.
- FIG. 2 shows a perspective side view of the injection valve in FIG. 1.
- the injection valve shown in section in FIG. 2 in a perspective side view and in FIG. 1 serves, for example, for injecting fuel into an intake duct leading to a combustion chamber of an internal combustion engine or directly into the combustion chamber of the internal combustion engine or for metered spraying of another fluid, e.g. of urea-water solutions in exhaust systems of internal combustion engines for the purpose of reducing nitrogen oxides contained in the exhaust gas.
- the injection valve has a housing 1 1, which is composed of three housing parts, namely from an inlet nozzle 12 with inlet opening 121 for the fluid, a valve tube 13, in which the end of the inlet nozzle 12 is immersed, and a pushed onto the valve tube 13 housing sleeve 14 having two different inner diameter sleeve portions 141 and 142.
- the sleeve portion 141 with the larger inner diameter encloses a seated on the valve tube 13 magnetic coil 15 of an electromagnet for actuating a valve needle arranged in the interior of the valve tube 13.
- the valve needle is connected in a known manner firmly with a magnet armature of the E- lektromagneten and pressed under the action of a arranged in the valve tube 13 valve closing spring with a closing head on a valve opening surrounding a valve seat of the injection valve.
- the sleeve portion 142 of the housing sleeve 14 with the smaller inner diameter is seated in a form-fitting manner on the valve tube 13.
- the housing 1 1 is surrounded by a plastic extrusion 16, from which the housing 11 projects axially with its fluid inlet side, upper housing end and its fluidabspritz purposeen, lower housing end.
- the upper end of the fluid inlet side is separated from an end section of the inlet stub 12 and the lower side of the fluid ejection side of a part of the
- Sleeve portion 141 having the larger inner diameter and the complete gene sleeve portion 142 formed with the smaller inner diameter.
- a connector 20 is cast, the two plug contacts 21 are connected to the winding of the magnetic coil 15.
- the injection valve is usually used in valve seats 17, 27, as they are indicated in Fig. 1 in part. In the case of a fuel
- the lower valve seat 17 is a bore in the cylinder head of a combustion cylinder of the internal combustion engine and the upper valve seat 27, a bore in a fuel rail, which is fixed to the cylinder head.
- two sealing rings 18, 19 are provided, of which a lower sealing ring 18 in a housing 1 1, more precisely in the sleeve portion 142 with the smaller inner diameter, recessed annular groove 26 rests and an upper Sealing ring 19 is seated on the protruding from the plastic extrusion 16 portion of the inlet nozzle 12.
- a preferably made of an elastomer sealing sleeve 23 is used in the illustrated embodiment, which presses on the one hand on the plastic extrusion 16 and on the other hand on the housing 1 1, more precisely on the sleeve portion 141 of the housing sleeve 14 with the larger inner diameter.
- the plastic extrusion 16 is provided near its upper end with a circumferential outer groove 24 and in the outer groove 24, a sealing ring 25, e.g. an O-ring, inserted, which presses in the valve seat 17 on the inner wall.
- This sealing ring 25 is of particular advantage when an installation position of the injection valve is required, in which possibly the inlet opening 121 of the inlet nozzle 12 is spatially below the injection opening of the injection valve and thus this area in the operation of the motor vehicle also to an increased extent water, sludge or the like is exposed, or operating conditions occur in which the injector completely immersed in water.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009000872.1A DE102009000872B4 (de) | 2009-02-16 | 2009-02-16 | Einspritzventil |
| PCT/EP2009/067106 WO2010091759A1 (de) | 2009-02-16 | 2009-12-14 | Einspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2396536A1 true EP2396536A1 (de) | 2011-12-21 |
| EP2396536B1 EP2396536B1 (de) | 2014-04-16 |
Family
ID=41598039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09774677.0A Not-in-force EP2396536B1 (de) | 2009-02-16 | 2009-12-14 | Einspritzventil |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9359987B2 (de) |
| EP (1) | EP2396536B1 (de) |
| JP (1) | JP5738202B2 (de) |
| CN (1) | CN102317614B (de) |
| DE (1) | DE102009000872B4 (de) |
| WO (1) | WO2010091759A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011006221B4 (de) | 2011-03-28 | 2022-09-29 | Robert Bosch Gmbh | Ventil für ein strömendes Medium |
| DE102011081176A1 (de) * | 2011-08-18 | 2013-02-21 | Robert Bosch Gmbh | Ventil zum Zumessen eines strömenden Mediums |
| KR101776335B1 (ko) * | 2011-12-09 | 2017-09-08 | 현대자동차주식회사 | Cng 엔진의 독립 연료분사시스템 |
| DE102013201794A1 (de) | 2013-02-05 | 2014-08-07 | Robert Bosch Gmbh | Ventil zum Zumessen von Fluid |
| US9366167B2 (en) * | 2013-11-08 | 2016-06-14 | Continental Automotive Systems, Inc. | Injector water intrusion seal with blow out volume |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2908095C2 (de) * | 1979-03-02 | 1984-02-16 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage für Brennkraftmaschinen |
| DE19744739A1 (de) | 1997-10-10 | 1999-04-15 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| US6065692A (en) * | 1999-06-09 | 2000-05-23 | Siemens Automotive Corporation | Valve seat subassembly for fuel injector |
| JP3712589B2 (ja) | 2000-03-31 | 2005-11-02 | 愛三工業株式会社 | インジェクタの応答性調整方法 |
| US6622752B2 (en) * | 2000-06-16 | 2003-09-23 | Bosch Automotive Systems Corporation | Pressure relief valve |
| JP3899937B2 (ja) | 2002-01-18 | 2007-03-28 | 株式会社デンソー | 燃料噴射弁 |
| WO2005061878A2 (en) * | 2003-12-19 | 2005-07-07 | Siemens Vdo Automotive Corporation | Polymeric bodied fuel injectors and method of manufacturing the polymeric bodied fuel injectors |
| JP2006057620A (ja) * | 2004-07-20 | 2006-03-02 | Aisan Ind Co Ltd | 燃料噴射弁及び燃料噴射弁のシール方法 |
| JP3993594B2 (ja) | 2004-09-27 | 2007-10-17 | 株式会社ケーヒン | 電磁式燃料噴射弁 |
| DE102005037319A1 (de) * | 2005-08-04 | 2007-02-08 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| DE102005052255B4 (de) | 2005-11-02 | 2020-12-17 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| US20080006713A1 (en) * | 2006-07-06 | 2008-01-10 | Parish James R | Fuel injector having an internally mounted cross-flow nozzle for enhanced compressed natural gas jet spray |
| DE102006042600A1 (de) | 2006-09-11 | 2008-03-27 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Ventil und Verfahren zur Herstellung eines elektromagnetisch betätigbaren Ventils |
-
2009
- 2009-02-16 DE DE102009000872.1A patent/DE102009000872B4/de not_active Expired - Fee Related
- 2009-12-14 JP JP2011549451A patent/JP5738202B2/ja not_active Expired - Fee Related
- 2009-12-14 EP EP09774677.0A patent/EP2396536B1/de not_active Not-in-force
- 2009-12-14 US US13/201,731 patent/US9359987B2/en not_active Expired - Fee Related
- 2009-12-14 CN CN200980156887.0A patent/CN102317614B/zh active Active
- 2009-12-14 WO PCT/EP2009/067106 patent/WO2010091759A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010091759A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010091759A1 (de) | 2010-08-19 |
| JP5738202B2 (ja) | 2015-06-17 |
| JP2012517553A (ja) | 2012-08-02 |
| US20120037727A1 (en) | 2012-02-16 |
| CN102317614A (zh) | 2012-01-11 |
| CN102317614B (zh) | 2016-04-27 |
| EP2396536B1 (de) | 2014-04-16 |
| DE102009000872A1 (de) | 2010-08-19 |
| US9359987B2 (en) | 2016-06-07 |
| DE102009000872B4 (de) | 2018-05-30 |
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