EP1187983A1 - Kraftstoffeinspritzventil für brennkraftmaschinen - Google Patents
Kraftstoffeinspritzventil für brennkraftmaschinenInfo
- Publication number
- EP1187983A1 EP1187983A1 EP00936813A EP00936813A EP1187983A1 EP 1187983 A1 EP1187983 A1 EP 1187983A1 EP 00936813 A EP00936813 A EP 00936813A EP 00936813 A EP00936813 A EP 00936813A EP 1187983 A1 EP1187983 A1 EP 1187983A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- injection
- fuel
- fuel injection
- valve body
- 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
- F02M61/18—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
-
- 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
Definitions
- the invention is based on a fuel injection valve for internal combustion engines according to the preamble of claim 1.
- a piston-shaped valve member is arranged axially displaceably in a valve body and has a conical valve sealing surface at its end on the combustion chamber side. With this conical valve sealing surface, the valve member interacts with a conical valve seat surface arranged at a closed end of a bore in the valve body, a sealing cross section being formed on the line of contact between the valve sealing surface and the valve seat surface.
- injection openings Downstream of this sealing cross-section, in the fuel flow direction, are injection openings which are arranged in the wall of the valve body and which, starting from the bore in the valve body, open on the outer surface of the valve body and protrude into the combustion chamber of the internal combustion engine to be supplied.
- These injection openings are conical on the known fuel injection valve, the cross section of the injection openings decreasing conically from a relatively large diameter at the fuel inlet to a relatively small diameter at the fuel outlet.
- the known fuel injection valve has the disadvantage that all injection openings have the same taper, so that it is not possible to individually adapt the fuel injection jet at each injection opening to the respective requirements of the individual injection jet within the combustion chamber.
- This individual optimization of the individual jet geometries at each injection opening is of particular importance, especially when the fuel injection valve is installed off-center or at an angle in the combustion chamber of the internal combustion engine, since this is the only way to optimally match the fuel injection with regard to the jet geometry and jet preparation adapt in the combustion chamber of the internal combustion engine and thus an optimal Generate fuel processing and combustion.
- Such a jet geometry optimization at each jet inlet is not possible with the known fuel injection valve.
- the fuel injection valve according to the invention for internal combustion engines with the characterizing features of claim 1 has the advantage over the fact that an optimization of the injection jet geometry depending on the local requirements is possible at each injection opening.
- the injection openings have different cone angles from one another, via which the respective fuel flow and thus the injected fuel jet can be shaped individually. It is possible to reduce the cross-section of the injection opening uniformly from a large diameter to a small diameter in the direction of flow of the fuel (positive conicity). However, it is alternatively also possible, with corresponding requirements, to increase the cross section of the injection opening (spray hole) evenly starting from the inlet opening in the direction of the combustion chamber-side outlet opening (negative taper).
- At least two injection openings advantageously have different cone angles depending on the installation position of the fuel injection valve in the combustion chamber of the internal combustion engine to be supplied, the cone angles preferably being in a range between 10 to 90 °. It is also particularly advantageous if, with increasing deflection angle (which is preferably between 15 ° and in special installation cases up to 120 °), the inflowing fuel at the inlet into the injection opening also increases the cone angle, particularly in the case of positive conicity.
- a plurality of injection openings can be provided on the fuel injection valve, wherein the differently designed injection openings can be arranged in a row over the circumference of the injection valve.
- each individual injection opening with an individually optimized conicity, depending on the requirements for the flow of the fuel and the jet geometry at the outlet, whereby the cone angle of the corresponding injection opening can be positive or negative .
- an optimized individual design of the cone angle at the individual injection openings an identical average fuel speed can be generated at each spray hole outlet despite different deflection angles of the inflowing fuel and an oblique installation position of the fuel injection valve in the combustion chamber.
- the drawing shows three exemplary embodiments of the fuel injection valve according to the invention for internal combustion engines, which are explained in more detail in the following description.
- FIG. 1 shows a first exemplary embodiment in a simplified partial section through the top of the fuel injection valve on the combustion chamber side, in which the injection openings have a negative cone angle
- FIG. 2 shows a second exemplary embodiment in a section through the part of the valve body on the combustion chamber side, in which the adjacent injection openings face one another are offset and have different positive cone angles
- FIG. 3 shows a third exemplary embodiment in which two rows of injection openings arranged axially one above the other are shown with different cone angles. Description of the embodiments
- the first exemplary embodiment of the fuel injection valve according to the invention for internal combustion engines which is shown only in its essential area in FIG. 1, has a valve body 1, which projects with its lower end, shown, into a combustion chamber, not shown, of an internal combustion engine.
- a valve member 3 is axially displaceably guided in a known manner, which has a conical valve sealing surface 5 at its lower, combustion chamber-side end, with which it cooperates with a valve seat surface 7 on the valve body 1.
- This valve seat surface 7 is formed at a closed end of a bore 9 in the valve body 1 and also has a conical cross section, the cone angle of the valve seat surface 7 deviating slightly from the cone angle of the valve sealing surface 5 on the valve member 3.
- a circumferential line contact is provided, which forms a sealing cross-section, which, when the valve member 3 is in contact with the valve seat surface 7, has an upstream space in the fuel flow of the bore 9 from a downstream blind hole 11 at the closed end of the Hole 9 separates.
- a plurality of injection openings 13 are also provided in the valve body 1, which open out from the wall of the bore 9 to the outer circumferential surface of the valve body 1 and protrude into the combustion chamber of the internal combustion engine to be supplied in a manner not shown. These injection openings are to be conical in dependence on the requirements of the fuel flow and the injection jet to be sprayed, a negative conicity being shown in the first exemplary embodiment shown in FIG.
- the cone angle is chosen such that the cross section of the injection opening continuously increases in the flow direction of the fuel from a relatively small inlet diameter on the wall of the bore 9 to a larger outlet diameter on the outer peripheral wall of the valve body 1.
- At least two of the injection openings 13 should have different cone angles, which are dependent on the position of the respective injection opening in the valve body 1 and the arrangement of the entire fuel injection valve in the combustion chamber of the internal combustion engine to be supplied.
- the second exemplary embodiment of the fuel injection valve according to the invention shown in FIG. 2 differs from the first exemplary embodiment shown in FIG. 1 in the arrangement and configuration of the injection openings 13 in the wall of the valve body 1.
- the injection openings 13 now have a positive conicity, in which the Diameter d1 at the inlet into the injection opening 13 is larger than the diameter d2 at the outlet opening of the injection opening 13 into the combustion chamber of the internal combustion engine to be supplied.
- two injection openings 13 are provided, which are arranged differently in the valve body 1 and which also have different cone angles.
- the cone angle ⁇ is dependent on a deflection angle ⁇ of the inflowing fuel at the inlet into the injection opening 13.
- the cone angle ⁇ at the injection openings 13 should preferably also increase with increasing deflection angle ⁇ .
- the inlet edges 15 are rounded at the transition between the inner wall surface of the valve body 1 for entry into the injection opening 13. In this way, a uniform entry of the fuel inflow into the injection openings 13 can be achieved, which can then be shaped within the injection openings 13 in accordance with the desired spray pattern by forming the cone angle to form the desired injection spray pattern.
- FIG. 3 shows a third exemplary embodiment of the fuel injection valve according to the invention for internal combustion engines, in which two rows of injection openings 13 arranged axially one above the other are now provided in valve body 1.
- the injection openings 13 arranged in a rotating row each have the same deflection angle ⁇ and thus the same cone angle ⁇ .
Landscapes
- Engineering & Computer Science (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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19925380 | 1999-06-02 | ||
DE19925380A DE19925380A1 (de) | 1999-06-02 | 1999-06-02 | Kraftstoffeinspritzventil für Brennkraftmaschinen |
PCT/EP2000/004813 WO2000075504A1 (de) | 1999-06-02 | 2000-05-26 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1187983A1 true EP1187983A1 (de) | 2002-03-20 |
EP1187983B1 EP1187983B1 (de) | 2005-08-10 |
Family
ID=7910091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00936813A Expired - Lifetime EP1187983B1 (de) | 1999-06-02 | 2000-05-26 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Country Status (4)
Country | Link |
---|---|
US (1) | US6520145B2 (de) |
EP (1) | EP1187983B1 (de) |
DE (2) | DE19925380A1 (de) |
WO (1) | WO2000075504A1 (de) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4103291B2 (ja) * | 2000-03-08 | 2008-06-18 | 株式会社デンソー | 燃料噴射ノズル |
DE10118164B4 (de) * | 2001-04-11 | 2007-02-08 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10132449A1 (de) * | 2001-07-04 | 2003-01-23 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10329731A1 (de) * | 2003-07-02 | 2005-02-03 | Robert Bosch Gmbh | Kraftstoffeinspritzventil und ein Verfahren zur Herstellung desselben |
FR2876750B1 (fr) * | 2004-10-19 | 2010-09-17 | Renault Sas | Buse d'injection possedant des trous de conicites differentes et moteur comportant une telle buse |
US7104475B2 (en) * | 2004-11-05 | 2006-09-12 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US7137577B2 (en) * | 2004-11-05 | 2006-11-21 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US7185831B2 (en) * | 2004-11-05 | 2007-03-06 | Ford Motor Company | Low pressure fuel injector nozzle |
US7168637B2 (en) * | 2004-11-05 | 2007-01-30 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US7198207B2 (en) * | 2004-11-05 | 2007-04-03 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US7438241B2 (en) * | 2004-11-05 | 2008-10-21 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US7124963B2 (en) * | 2004-11-05 | 2006-10-24 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US7051957B1 (en) * | 2004-11-05 | 2006-05-30 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
EP1693562B1 (de) * | 2005-01-19 | 2007-05-30 | Delphi Technologies, Inc. | Brennstoffeinspritzventil |
JP4549222B2 (ja) * | 2005-04-19 | 2010-09-22 | ヤンマー株式会社 | 直接噴霧式ディーゼル機関 |
FR2892452A1 (fr) * | 2005-10-26 | 2007-04-27 | Peugeot Citroen Automobiles Sa | Chambre de combustion pour moteur a injection directe et moteur comportant ladite chambre |
DE102006013962A1 (de) | 2006-03-27 | 2007-10-04 | Robert Bosch Gmbh | Einspritzdüse mit Spritzkanälen sowie Verfahren zur Einbringung von Kanälen |
US7572997B2 (en) * | 2007-02-28 | 2009-08-11 | Caterpillar Inc. | EDM process for manufacturing reverse tapered holes |
KR100872841B1 (ko) * | 2007-09-28 | 2008-12-09 | 한국전력공사 | 디엠이 연료용 가스터빈 연소기의 연료노즐과 이의 설계방법 |
US8496191B2 (en) * | 2008-05-19 | 2013-07-30 | Caterpillar Inc. | Seal arrangement for a fuel injector needle valve |
DE102008041676A1 (de) * | 2008-08-29 | 2010-03-04 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP2187043A1 (de) * | 2008-11-14 | 2010-05-19 | Delphi Technologies Holding S.à.r.l. | Einspritzdüse |
US8479519B2 (en) * | 2009-01-07 | 2013-07-09 | General Electric Company | Method and apparatus to facilitate cooling of a diffusion tip within a gas turbine engine |
US20110030635A1 (en) * | 2009-08-04 | 2011-02-10 | International Engine Intellectual Property Company, Llc | Fuel injector nozzle for reduced coking |
CN101825045A (zh) * | 2010-04-13 | 2010-09-08 | 大连理工大学 | 柴油机燃烧系统 |
KR20120058151A (ko) * | 2010-11-29 | 2012-06-07 | 현대자동차주식회사 | 차량용 인젝터 |
JP5195890B2 (ja) * | 2010-12-21 | 2013-05-15 | トヨタ自動車株式会社 | 燃料噴射弁および内燃機関 |
AT511880B1 (de) * | 2011-09-06 | 2013-12-15 | Bosch Gmbh Robert | Verschleissoptimierte herstellung von konischen spritzlöchern |
JP5959892B2 (ja) * | 2012-03-26 | 2016-08-02 | 日立オートモティブシステムズ株式会社 | 火花点火式燃料噴射弁 |
US9546633B2 (en) * | 2012-03-30 | 2017-01-17 | Electro-Motive Diesel, Inc. | Nozzle for skewed fuel injection |
US20130298563A1 (en) * | 2012-05-14 | 2013-11-14 | General Electric Company | Secondary Combustion System |
EP2757247A1 (de) * | 2013-01-18 | 2014-07-23 | EFI Hightech AG | Einspritzdüse für eine Verbrennungskraftmaschine |
AT512893B1 (de) | 2013-02-05 | 2013-12-15 | Bosch Gmbh Robert | Bauelement mit ineinandermündenden Hochdruckbohrungen |
JP5786875B2 (ja) * | 2013-02-05 | 2015-09-30 | 株式会社デンソー | 燃料噴射ノズル |
EP2884090B1 (de) | 2013-12-11 | 2018-02-21 | Continental Automotive GmbH | Düsenkörper und Kraftstoffeinspritzventil |
US9695723B2 (en) | 2014-01-15 | 2017-07-04 | General Electric Company | Combustion system including a piston crown and fuel injector |
DE102014220928A1 (de) * | 2014-10-15 | 2016-04-21 | Continental Automotive Gmbh | Registerdüse zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine |
US10570865B2 (en) * | 2016-11-08 | 2020-02-25 | Ford Global Technologies, Llc | Fuel injector with variable flow direction |
DE102016224084B4 (de) * | 2016-12-05 | 2019-04-18 | Robert Bosch Gmbh | Kraftstoffinjektor |
JP7529580B2 (ja) * | 2021-01-19 | 2024-08-06 | 本田技研工業株式会社 | 内燃機関 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2557772A1 (de) * | 1975-12-20 | 1977-06-23 | Kloeckner Humboldt Deutz Ag | Brennstoffeinspritzventil |
GB8817774D0 (en) | 1988-07-26 | 1988-09-01 | Lucas Ind Plc | Fuel injectors for i c engines |
JP2946760B2 (ja) | 1990-12-27 | 1999-09-06 | いすゞ自動車株式会社 | 異形噴孔ノズルの製造方法 |
DE4222137B4 (de) * | 1992-07-06 | 2006-05-04 | Robert Bosch Gmbh | Kraftstoff-Einspritzdüse für Diesel-Brennkraftmaschinen |
US5540200A (en) * | 1993-12-28 | 1996-07-30 | Nissan Motor Co., Ltd. | Fuel injection valve |
DE69600705D1 (de) * | 1995-05-12 | 1998-11-05 | Yamaha Motor Co Ltd | Brennkraftmaschine |
JPH09280134A (ja) * | 1996-04-15 | 1997-10-28 | Zexel Corp | 可変噴孔型燃料噴射ノズル |
DE19642513A1 (de) * | 1996-10-15 | 1998-04-16 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
-
1999
- 1999-06-02 DE DE19925380A patent/DE19925380A1/de not_active Ceased
-
2000
- 2000-05-26 DE DE50010930T patent/DE50010930D1/de not_active Expired - Lifetime
- 2000-05-26 EP EP00936813A patent/EP1187983B1/de not_active Expired - Lifetime
- 2000-05-26 WO PCT/EP2000/004813 patent/WO2000075504A1/de active IP Right Grant
-
2001
- 2001-12-03 US US10/005,979 patent/US6520145B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0075504A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50010930D1 (de) | 2005-09-15 |
US20020043574A1 (en) | 2002-04-18 |
EP1187983B1 (de) | 2005-08-10 |
WO2000075504A1 (de) | 2000-12-14 |
US6520145B2 (en) | 2003-02-18 |
DE19925380A1 (de) | 2000-12-07 |
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