WO2013178549A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2013178549A1 WO2013178549A1 PCT/EP2013/060757 EP2013060757W WO2013178549A1 WO 2013178549 A1 WO2013178549 A1 WO 2013178549A1 EP 2013060757 W EP2013060757 W EP 2013060757W WO 2013178549 A1 WO2013178549 A1 WO 2013178549A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- face
- injection valve
- combustion chamber
- ring
- fuel injection
- Prior art date
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
- F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
- F02M67/10—Injectors peculiar thereto, e.g. valve less type
- F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves
-
- 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
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
- F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1813—Discharge orifices having different orientations with respect to valve member direction of movement, e.g. orientations being such that fuel jets emerging from discharge orifices collide with each other
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
-
- 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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
- F02M2200/06—Fuel-injection apparatus having means for preventing coking, e.g. of fuel injector discharge orifices or valve needles
Definitions
- the present invention relates to a fuel injection valve.
- a high pressure injector is shown for injecting fuel directly into a combustion chamber.
- Pre-stage chambers hosed into the combustion chamber.
- the precursor mer came here ends combustion chamber side flush with the combustion chamber facing end face of the housing of the injection valve. This end face is also referred to as Injektorkuppe.
- Each injection leads to a wetting of the region of the front surface near the preamplifier and to increased particle emission.
- fuel residues polymerize and form a porous layer by incorporating the soot particles formed in the combustion chamber.
- This porous layer acts as a "sponge" for the fuel during subsequent injection processes and leads to evaporation in the compression phase following the compression
- Claim 1 provides a ring on the injector, combustion chamber side of the precursor chamber before.
- the wetted surface with fuel is drastically reduced and by a sharp-edged design of the ring in the injection hole or in the pre-stage chamber remaining fuel lamella "cut” and the closing process of the outlet opening back into the Retracted fuel injector. This reduces the remaining mass.
- the deposits on the annular face of the ring can be easily blown off by the combustion chamber flow.
- the patch ring has a relatively low mass and thus can be strongly heated, so it comes to a rapid evaporation of remaining fuel residues in the deposits, which in turn reduces the formation of particles drastically. All these advantages are achieved by the fuel injection valve according to the invention.
- this is a high-pressure injection valve for the direct injection of fuel into a combustion chamber.
- the injection valve comprises (i) a housing having a combustion chamber-side housing end face, (ii) an actuator (iii), a valve-closing body actuable by the actuator, and (iv) at least one outlet opening in the housing end face for the fuel.
- the valve closing body is moved so that it optionally closes or releases the outlet opening.
- On the combustion chamber side around the outlet opening according to the invention is a ring on the combustion chamber side
- the ring can also be referred to as a bead, Aufsch or collar.
- the ring or the end face of the ring represents a very small area for deposition of fuel, so that the initially mentioned problems are largely avoided.
- the combustion chamber side or the combustion chamber facing housing end face in which the outlet opening is formed in particular designed dome-shaped.
- the dome shape extends in the direction of the combustion chamber. Advantage of this dome-shaped configuration is that distributed on the dome shape more outlet openings can be formed.
- the valve closing body is in particular designed so that at the same time depending on the position all
- the outlet opening is composed of a spray hole with a first diameter and a combustion chamber side adjoining the injection hole precursor chamber with a second diameter.
- the second diameter is larger than the first diameter.
- the ring of the invention is here the combustion chamber side of the advantageous
- the inner diameter of the ring there are two preferred variants.
- the inner diameter of the ring may be equal to the second diameter.
- the ring represents an extension of the pre-stage chamber without paragraphs.
- the inner diameter of the ring is larger than the second diameter.
- the ring has a combustion chamber side or a combustion chamber facing
- Wall thickness of the ring chosen as small as possible.
- Fuel injection valve is, the inclination of the annular end face can be defined directly with respect to the housing end face. In a preferred embodiment, however, it is provided that the housing end face is formed dome-shaped. In the dome-shaped training, there is a tangent surface of the
- Tangents share the dome-shaped housing face.
- the inclination of the annular end face can accordingly be defined in relation to the tangent surface. It is preferably provided that the entire annular surface with respect to the
- Housing end face or the tangent surface has a tendency.
- Tilt angle is preferably at least 5 °, more preferably at least 10 °.
- the annular end face is inclined outwards. This means that the ring is higher inside than outside.
- the annular end face in cross-section saddle roof shape.
- the annular end face is divided into two annular partial surfaces which are angled to each other. Again, it is preferably provided to set the inclination angle of the individual partial surfaces to at least 5 °, preferably to at least 10 0 .
- the wall thickness of the ring is kept as low as possible in order to avoid deposits.
- the wall thickness should be between 0.1 mm and 0.3 mm.
- the ring should protrude 0.1 mm to 0.5 mm beyond the housing face.
- Figure 1 is a sectional view of an inventive
- FIG. 3 shows a detail of the fuel injection valve according to the invention according to a second embodiment
- Figures 4 and 5 details of the fuel injection valve according to the invention according to a third embodiment
- Figures 6 and 7 details of the fuel injection valve according to the invention according to a fourth embodiment.
- FIG. 1 shows a sectional view of a device according to the invention
- Fuel injection valve 1 is designed as a high-pressure injection valve for the direct injection of fuel into a combustion chamber.
- Figure 1 shows the structure for all embodiments.
- the fuel injection valve 1 comprises a housing 2, an actuator 3, a valve closing body 4 and a plurality of outlet openings 5.
- the housing 2 is composed of a base body 6 and a combustion chamber side insert 7.
- the combustion chamber facing side of the insert 7 is referred to as housing end face 12.
- housing end face 12 In this housing end face 12 are the plurality
- the actuator 3 comprises a Bestrombare coil 8 and a core 9.
- the valve closing body 4 comprises a needle 10 and a ball 1 1. With a corresponding position of the needle 10, the ball 1 1 simultaneously closes all the outlet openings. 5
- FIGS. 2 to 7 an outlet opening is surrounded by a dashed line.
- This edged exit opening shows a comparative example 14 according to the prior art.
- all outlet openings 5 are designed according to the invention on the housing end face 12.
- Figure 2 shows a detail of the fuel injection valve 1 according to a first embodiment. Shown is a section of the combustion chamber facing housing end face 12. This housing end face 12 is configured dome-shaped. Shown is one of the several outlet openings 5. The combustion chamber is located in the upper region, accordingly, an injection direction 13 is shown for the fuel.
- the outlet opening 5 is composed of a spray hole 17 and a precursor chamber 18.
- the precursors came mer 18 is the combustion chamber side of the
- the ring 15 is an integral part of the housing 2, in particular of the insert 7.
- the ring 15 has the combustion chamber side an annular end face 16 on the combustion chamber side of the precursor chamber 18.
- the edge at the transition to the annular end face 16 is referred to as edge 28.
- This edge 28 is formed as sharp as possible, to achieve a tearing of the flow here.
- the injection hole 17 has a first diameter 19.
- the precursor chamber 18 has a second diameter 20.
- the injection hole 17 extends over a first length 21.
- the precursors came mer 18 extends over a second length 22.
- the interior of the ring 15 extends over a third length 23.
- the ring 15 has a wall thickness 24.
- the second diameter 20 corresponds to an inner diameter of the ring 15. Furthermore, the second diameter 20 is formed substantially larger than the first diameter 19.
- the wall thickness 24 is as small as possible, preferably between 0.1 mm and 0.3 mm, formed in order to avoid deposition of the fuel on the annular end face 16 as far as possible.
- the third length 23 is between 0.1 mm and 0.5 mm.
- FIG. 3 shows in detail a second embodiment of the invention
- Fuel injection valve 1 In contrast to the first embodiment, the annular end face 16 in the second embodiment is opposite to the
- Tangency surface on the housing end face 12 inclined at an angle ⁇ .
- the angle ⁇ is here at 10 °.
- the annular end face 16 is inclined outwards.
- FIG. 3 shows a radius 15 at the transition from the ring
- the annular end face 16 is not formed parallel to the tangent surface of the housing end face 12 in the third embodiment.
- the annular end face 16 is viewed in cross-section saddle-roof-shaped. The two faces of the annular end face 16 are inclined by the angle ⁇ , so that the tip or the gable roof shape is formed. This design of the annular end face 16 promotes the blowing off of deposits.
- Figures 6 and 7 show the fuel injection valve 1 according to a fourth embodiment.
- the annular end face 16 is designed like a saddle roof in the third embodiment.
- an inner diameter 27 of the ring 15 is increased. The inner diameter 27 is thus larger than the second
- Diameter 20 This creates a step or a heel at the transition from the precursor chamber 18 to the interior of the ring 15th
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/404,724 US9599084B2 (en) | 2012-06-01 | 2013-05-24 | Fuel injector |
KR1020147033527A KR102089242B1 (ko) | 2012-06-01 | 2013-05-24 | 연료 분사 밸브 |
JP2015514437A JP6077648B2 (ja) | 2012-06-01 | 2013-05-24 | 燃料噴射弁 |
EP13725637.6A EP2855917B1 (de) | 2012-06-01 | 2013-05-24 | Brennstoffeinspritzventil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012209326.5 | 2012-06-01 | ||
DE201210209326 DE102012209326A1 (de) | 2012-06-01 | 2012-06-01 | Brennstoffeinspritzventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013178549A1 true WO2013178549A1 (de) | 2013-12-05 |
Family
ID=48536844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/060757 WO2013178549A1 (de) | 2012-06-01 | 2013-05-24 | Brennstoffeinspritzventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US9599084B2 (de) |
EP (1) | EP2855917B1 (de) |
JP (1) | JP6077648B2 (de) |
KR (1) | KR102089242B1 (de) |
DE (1) | DE102012209326A1 (de) |
WO (1) | WO2013178549A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019030078A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | FUEL INJECTOR NOZZLE |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6020380B2 (ja) * | 2013-08-02 | 2016-11-02 | 株式会社デンソー | 燃料噴射弁 |
DE102013225948A1 (de) | 2013-12-13 | 2015-06-18 | Continental Automotive Gmbh | Düsenkopf und Fluid-Einspritzventil |
JP6292188B2 (ja) * | 2015-04-09 | 2018-03-14 | 株式会社デンソー | 燃料噴射装置 |
GB2577251A (en) * | 2018-09-18 | 2020-03-25 | Ford Global Tech Llc | Diesel injectors and method of manufacturing diesel injectors |
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Publication number | Priority date | Publication date | Assignee | Title |
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US4650122A (en) * | 1981-04-29 | 1987-03-17 | Robert Bosch Gmbh | Method for preparing fuel and injection valve for performing the method |
US5752316A (en) * | 1995-02-27 | 1998-05-19 | Aisan Kogyo Kabushiki Kaisha | Orifice plate for injector and method of manufacturing the same |
WO2002084104A1 (de) * | 2001-04-11 | 2002-10-24 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10124748A1 (de) * | 2001-05-21 | 2003-02-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE102008001949A1 (de) * | 2007-05-24 | 2008-11-27 | Denso Corp., Kariya-shi | Kraftstoffeinspritzventil und Düsenplatte für das Kraftstoffeinspritzventil |
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US4245789A (en) * | 1979-05-03 | 1981-01-20 | General Motors Corporation | Electromagnetic fuel injector |
JPS59139578U (ja) * | 1983-03-10 | 1984-09-18 | 日産自動車株式会社 | ホ−ル型燃料噴射弁 |
DE3408012A1 (de) * | 1984-03-05 | 1985-09-05 | Gerhard Dipl.-Ing. Warren Mich. Mesenich | Elektromagnetisches einspritzventil |
DE3427526A1 (de) * | 1984-07-26 | 1986-02-06 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisch betaetigbares ventil |
JPS62116164U (de) * | 1986-01-14 | 1987-07-23 | ||
DE3733604A1 (de) * | 1987-10-05 | 1989-04-13 | Bosch Gmbh Robert | Lochkoerper fuer eine kraftstoffeinspritzventil |
JPH04246274A (ja) * | 1991-02-01 | 1992-09-02 | Shinnenshiyou Syst Kenkyusho:Kk | 直接噴射式ディーゼル機関の燃料噴射装置 |
JPH09236062A (ja) * | 1996-02-27 | 1997-09-09 | Zexel Corp | 電磁式燃料噴射弁のカーボンデポジット防止装置 |
JPH10252612A (ja) * | 1997-03-07 | 1998-09-22 | Zexel Corp | 燃料噴射ノズル |
JP3771361B2 (ja) * | 1997-11-26 | 2006-04-26 | 株式会社日立製作所 | 燃料噴射弁 |
JPH11200998A (ja) * | 1998-01-19 | 1999-07-27 | Denso Corp | 流体噴射ノズル |
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DE19815918A1 (de) * | 1998-04-09 | 1999-10-21 | Man B & W Diesel As | Brennstoffeinspritzvorrichtung |
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JP2000064929A (ja) * | 1998-08-24 | 2000-03-03 | Mitsubishi Electric Corp | 燃料噴射弁 |
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JP2006132434A (ja) * | 2004-11-05 | 2006-05-25 | Denso Corp | 噴孔部材、燃料噴射弁、および噴孔部材の製造方法 |
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-
2012
- 2012-06-01 DE DE201210209326 patent/DE102012209326A1/de not_active Withdrawn
-
2013
- 2013-05-24 JP JP2015514437A patent/JP6077648B2/ja not_active Expired - Fee Related
- 2013-05-24 EP EP13725637.6A patent/EP2855917B1/de not_active Not-in-force
- 2013-05-24 KR KR1020147033527A patent/KR102089242B1/ko active IP Right Grant
- 2013-05-24 WO PCT/EP2013/060757 patent/WO2013178549A1/de active Application Filing
- 2013-05-24 US US14/404,724 patent/US9599084B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4650122A (en) * | 1981-04-29 | 1987-03-17 | Robert Bosch Gmbh | Method for preparing fuel and injection valve for performing the method |
US5752316A (en) * | 1995-02-27 | 1998-05-19 | Aisan Kogyo Kabushiki Kaisha | Orifice plate for injector and method of manufacturing the same |
WO2002084104A1 (de) * | 2001-04-11 | 2002-10-24 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10124748A1 (de) * | 2001-05-21 | 2003-02-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE102008001949A1 (de) * | 2007-05-24 | 2008-11-27 | Denso Corp., Kariya-shi | Kraftstoffeinspritzventil und Düsenplatte für das Kraftstoffeinspritzventil |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019030078A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | FUEL INJECTOR NOZZLE |
Also Published As
Publication number | Publication date |
---|---|
DE102012209326A1 (de) | 2013-12-05 |
EP2855917A1 (de) | 2015-04-08 |
JP6077648B2 (ja) | 2017-02-08 |
US9599084B2 (en) | 2017-03-21 |
US20150115068A1 (en) | 2015-04-30 |
JP2015518111A (ja) | 2015-06-25 |
EP2855917B1 (de) | 2016-10-19 |
KR20150018525A (ko) | 2015-02-23 |
KR102089242B1 (ko) | 2020-03-16 |
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