WO2002099256A1 - Ölabscheidevorrichtung für kurbelgehäusegase einer verbrennungskraftmaschine - Google Patents
Ölabscheidevorrichtung für kurbelgehäusegase einer verbrennungskraftmaschine Download PDFInfo
- Publication number
- WO2002099256A1 WO2002099256A1 PCT/DE2002/000964 DE0200964W WO02099256A1 WO 2002099256 A1 WO2002099256 A1 WO 2002099256A1 DE 0200964 W DE0200964 W DE 0200964W WO 02099256 A1 WO02099256 A1 WO 02099256A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- separating device
- oil separating
- oil
- housing
- flow path
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/0044—Layout of crankcase breathing systems with one or more valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
- F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
- F01M2013/0072—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
- F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/19—Crankcase ventilation
Definitions
- the invention relates to an oil separator for crankcase gases of an internal combustion engine, m t a Vorabscheideemr device, one
- Cyclone separating device a fine separating device and optionally a valve device, which are provided in a cascade-like manner on a cylinder head cover of the internal combustion engine
- blow-by gas In the operation of an internal combustion engine, leakage gas flows, so-called blow-by gas, occur between the pistons, piston rings and cylinder running surface, g-gf also in the area of valve guides.
- this blow-by gas blow which gets into the crankcase or camshaft housing above the cylinder head or is led there, there are liquid components, m primarily contain fine drops of oil or low-boiling components of Motcrol.
- larger oil droplets can also be contained in the furbel housing gas or in the camshaft housing gas.
- Schwallol To discharge the blow-by gases is a ventilation of the crankcase, which usually over the _
- Camshaft housing runs provided. These referred to as crankcase gases and pulsating gas / liquid quantities are freed from the liquid components by an oil separator and then usually passed into the intake area of the internal combustion engine.
- the oil separation prevents contamination in the following areas and the emission of hydrocarbons is not undesirably increased.
- crankcase gas is passed over a helical flow path, where it flows very quickly. Due to the centrifugal forces that occur, the liquid components of the crankcase gas are separated radially on the outside on a wall delimiting the helical flow path, and the liquid phase travels downward along the helical path due to gravity. It is understood that the
- crankcase gas Flow velocity of the crankcase gas within the helical flow path depends on the amount of crank gas generated per unit of time and on the flow cross section: the flow path depends.
- the amount of crank gas generated per side depends u. a. from the displacement of a motor vehicle. For example, in a diesel engine with a displacement of 2 to 2.5 liters, crankcase gas quantities of approximately 65 liters / ml are lost. on. But there are also engines where typically only about 50. 1 / min. be introduced into the oil separator, but the minimum quantity should be 40 1 / min. be considered.
- the object of the present invention is to counter the problem described above.
- the spirals of different radial depth of the flow path have the same external dimensions, so that they can be used without additional adapter pieces, such as, for. B. cylindrical sleeves or the like, m the housing section for the Syklonabscheide noticed ⁇ insetzbar. such Falls With these coils, the radially inner boundary of the helical flow path varies.
- a respective helix comprises a cylindrical inner piece, this cylindrical inner piece defining an inner diameter D x of the helical flow path.
- the helix can be manufactured, for example, by inserting the cylindrical inner piece through a central opening of the helical passages with a corresponding opening diameter
- the present invention therefore claims protection for a system comprising an oil separator device with different usable coils, each with a different radial depth. It is therefore proposed according to the invention, preferably while maintaining the outer dimensions of the
- crank gas quantity of about 65 l / mm for example a diesel engine with a displacement of 2 to 2.5 l
- the flow path is dimensioned such that the cylindrical inner piece has a diameter of about 8 mm and the outer diameter of the housing for the Syklonabscheider observed is dimensioned with beil mm at a helical pitch (pitch) of 13 mm
- the Inner diameter is about 18 mm, then due to the smaller flow cross-section e ne flow rate within the same as high
- crankcase gas 40 1 / mm em internal diameter of about 24 mm should be suitable, again with a turning height (pitch) of 13 mm and an outer diameter of 51 mm.
- the oil separating device is designed such that the pre-separating device, the syclone separating device, the femal separating device and the possibly provided valve device are arranged on the outside of the Sylmderkopfhaube and overlaid by a housing half-shell, which together with the outside of the Sylmderkopfhaube device is a housing for the separating device forms and seals against the Outside of the Sylmderkcpfhaube is mountable
- the arrangement of the components of the oil separating device outside the actual Sylmderkopfhaube opens up the possibility to manufacture all components of a housing namely a housing half shell of the oil separating device as a preassembled module and then to add this module as a whole to the outside of the Syl derkopfhaube with or without an additional base part in particular
- the cylinder head cover can be detached from the components of the oil separator on the cylinder head in order to close off the camshaft housing.
- the prefabricated assembly of the oil separator can then be attached or at a later point in time
- the housing half shell which forms a housing for the oil separating device, is an integrally produced plastic part, in particular an injection molded part
- the housing half-shell can be used pre-assembled with respect to the housing then all components can be used be preassembled and held ready for installation and then fed to the cylinder head cover at the desired side of the final assembly
- Dimensions of only about 295 x 60 x 70 mm (length x width x height) proven to be sufficient; quantities of oil of 100 to 200 g / h could be separated.
- a much larger overall height of 175 mm and a length and width of 105 x 90 mm were previously required.
- the design according to the invention makes it possible to realize flat and elongated dimensions in the configuration of the oil separating device in the range mentioned, which are sufficient in terms of their effectiveness and throughput as well as separating capacity.
- the housing half-shell comprises circumferential side walls which extend in the direction of the cylinder head cover and which merge into a peripheral edge facing the cylinder head cover, by means of which the housing half-shell can be sealingly applied to the outside of the cylinder head cover.
- This circumferential front edge can advantageously define a contact plane, which then requires a correspondingly flat design of the outside of the cylinder head cover in the assembly area for the oil separating device.
- a design of the housing half-shell of the oil separating device with top side walls extending in the direction of the cylinder head cover, that is to say with an essentially cup-shaped geometry, makes it possible in a particularly advantageous manner to preassemble all components in the protected and prefabricated housing, which is then only connected to the outside of the cylinder head cover via its peripheral edge needs to be connected.
- a base piece could close the housing half-shell of the assembly, in particular except for the inflow and return openings.
- FIG. 1 shows a perspective view of an oil separating device according to the invention in the assembled state on the outside of a Sylmder head hood;
- FIG. 2 shows a perspective illustration according to FIG. 1 with the walls of the oil separating device partially broken away
- Figure 3 is a perspective view of the
- Figure 4 is a perspective view of the
- FIG. 5 shows a schematic sectional view through an embodiment of the oil separating device according to the invention with a Sylmder hood and only schematically indicated
- FIG. 6 shows two schematic representations of different spiral inserts for the oil separating device according to FIG. 4.
- FIG. 1 shows, in a perspective view, an oil separating device 2, designated overall by reference number 2 and to be described below in detail, in the assembled state on the outside of a Sylmder head hood, generally designated by reference number 4; Internal combustion engine.
- FIGS. 3 and 4 show a perspective view of the oil separating device 2. Reference is also made below to FIG. 5, which shows a sectional view of the oil separating device 2 partially schematically.
- the oil separator 2 comprises a housing half-shell 6, which accommodates all components of the oil separator 2.
- the housing half-shell 6 is a one-piece plastic injection-molded part, which comprises longitudinal side walls 8 extending in the direction of the cylinder head cover 4.
- the peripheral side walls 8 start from an upper cover wall 10, a plurality of pot-shaped housing regions 12, 14, 16 being formed.
- the respective peripheral side walls 8 merge into an end circumferential edge 18, with which the housing half-shell 6 can be sealingly placed against an outside 20 of the cylinder head cover 4.
- the housing half-shell 5 can then be screwed to the outside 20 of the Sylmder head cover 4 by means of screws 22 indicated in FIG. 5 and shown in FIGS. 1 to 4.
- the circumferential end edge 18 forms or defines a contact plane 25.
- an area running in the area of the frontal edge 18 on the outside 20 of the cylinder head cover 4 needs to be correspondingly flat.
- the relevant differently designed cylinder head covers for different internal combustion engines only have to have an outer side designed according to the housing half-shell or according to its front edge 18, in the simplest case a flat section (but only along the course of the edge 18).
- the housing portion 12 forms a substantially pot-shaped • sodium chamber in which a Vorabscheideemcardi- 28 and a Syklonabscheide immunity 30 is provided. By adjoining the pot-shaped housing area
- the housing 14 includes a fine separator 32 with a fine separator insert 34, for example in the form of a yarn winder.
- the housing area which is less high than the housing areas 12, 14
- valve device 36 which opens or closes an outlet 38 of the oil separating device 2 to the intake side of the internal combustion engine, not shown, and thus limits the pressure of the crankcase gas upwards.
- the cascade-like separation stages are designed as follows:
- the pre-separating device 28 is arranged above an inflow opening 40 for crankcase gases of the cylinder head cover 4 and comprises, as can be seen in FIG. 5, flow guide walls 42, which preferably deflect the crankcase gases flowing into the oil separating device 2 several times cause.
- a backflow opening 44 is provided for liquid separated in this stage. From the backflow opening 44 at the bottom end of ⁇ in ⁇ r flow guide wall 42, the separated liquid then drips down against the flow of the crankcase gas and thus directly returns to the engine compartment below Sylmderkopfhaube 4.
- the flowing crankshaft gas into the cascade-like subsequent arranged cyclone separating device 30.
- the helical flow path 46 is formed by a helix 48 with a central opening 50, through which a tubular or cylindrical inner piece 52 is inserted and is essentially tightly connected to the helix 48.
- the peripheral edges 54 of the helix 4S lie essentially sealingly against the inner side of the peripheral side walls 8 of the housing half-shell 8.
- the inner part 52 forms or delimits the helical passages of the helix 48 and the housing half-shell 6 the helical flow path 46.
- the liquid constituents are separated radially on the outside in the helically flowing crankcase gas and flow down the spiral path due to their gravity.
- the radial depth of the helical flow path 46 can be varied in a particularly advantageous manner. This can preferably be done by using different helices 48 with different radial depths, which is preferably achieved by differently sized inner pieces 52 of the helix 48 with the outer diameter of the helix 48 remaining the same. In this way, by selecting and inserting different coils, a different one Flow cross section for adaptation to different Mo oren and applications with otherwise constant construction and dimensioning of the oil separating device 2 is achieved.
- the fine separation device 32 which is accommodated downstream in terms of flow in the housing region 14, comprises a cylindrical yarn package as a fine separation insert 34, which is closed on its side facing the cylinder head.
- the flowing crankcase gases pass through the cylindrical wall of the yarn package and in the process the remaining finest liquid droplets are separated, which, due to the force of gravity, move downward in the direction of the cylinder head cover as a result of gravity.
- An oil discharge opening 56 which is only schematically indicated in FIG. 5, is provided there in the cylinder head cover.
- the yarn package comprises an outlet opening 58 at its upper end. In this area, the cover wall 10 is bulged somewhat upwards.
- the crankshaft gases flowing through the outlet opening 58 are then deflected by 90 ° directly in the region of the bulge and then deflected again by 90 ° downwards in the direction of the cylinder head cover 4.
- the formation of the bulged part 10 as a separate component considerably simplifies the manufacture of the housing half-shell 6 in terms of the molding effort.
- the very stylish design of the overflow channel 60 keeps the tree space required in the longitudinal direction as small as possible.
- a counter contour 59 which is formed on the cylinder head cover, engages in a recess between the housing regions 14 and 16, so that no dead volume is formed in which liquid could accumulate.
- the flowing crankcase gas flows from the overflow channel 60 into the housing region 16, where the ⁇ ′ valve device 36 is provided.
- the valve device 36 comprises a diaphragm 62, shown schematically in FIG. 5, which is connected to the atmosphere and on the other hand is acted upon by the crankcase gas. At maximum suction through the
- valve device 36 closes an opening 64, specifically under the pressure of the atmosphere. If the pressure rises below the membrane 62 as a result of the crankcase gas, the opening 64 is opened and crankcase gases are fed to the (re) combustion.
- FIG. 6 shows, in a schematic indication, two different embodiments of helixes 48 with different radial depths of the flow path, which are achieved by the inner diameter 52 of the helix 48 being equal by cylindrical inner pieces 52 of different diameters.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/343,653 US6860915B2 (en) | 2001-06-07 | 2002-03-16 | Oil separating device for crankcase gases of an internal combustion engine |
JP2003502348A JP2004521237A (ja) | 2001-06-07 | 2002-03-16 | 内燃機関のクランク室ガス用のオイル分離器 |
EP02735002A EP1399650A1 (de) | 2001-06-07 | 2002-03-16 | Ölabscheidevorrichtung für kurbelgehäusegase einer verbrennungskraftmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10127820A DE10127820A1 (de) | 2001-06-07 | 2001-06-07 | Ölabscheidevorrichtung für Kurbelgehäusegase einer Verbrennungskraftmaschine |
DE10127820.9 | 2001-06-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002099256A1 true WO2002099256A1 (de) | 2002-12-12 |
WO2002099256A8 WO2002099256A8 (de) | 2003-04-10 |
Family
ID=7687611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/000964 WO2002099256A1 (de) | 2001-06-07 | 2002-03-16 | Ölabscheidevorrichtung für kurbelgehäusegase einer verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6860915B2 (de) |
EP (1) | EP1399650A1 (de) |
JP (1) | JP2004521237A (de) |
DE (1) | DE10127820A1 (de) |
WO (1) | WO2002099256A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8171920B2 (en) | 2005-12-20 | 2012-05-08 | 3nineAB | Device for cleaning crank case gases |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7285149B2 (en) * | 2003-10-31 | 2007-10-23 | Bendix Commercial Vehicle Systems Llc | Oil separator for vehicle air system |
DE102004037157B4 (de) * | 2004-07-30 | 2008-07-03 | Reinz-Dichtungs-Gmbh | Flüssigkeitsabscheidevorrichtung, Verfahren zu deren Herstellung sowie Verwendung derselben |
DE102004011176B4 (de) * | 2004-03-08 | 2008-09-25 | Reinz-Dichtungs-Gmbh | Ölabscheider |
DE102004011177B4 (de) * | 2004-03-08 | 2014-07-31 | Reinz-Dichtungs-Gmbh | Zylinderkopfhaube mit Ölabscheider |
BRPI0508494B1 (pt) | 2004-03-08 | 2016-02-16 | Reinz Dichtungs Gmbh | separador de óleo |
DE102006039354B4 (de) * | 2006-08-22 | 2010-02-04 | Reinz-Dichtungs-Gmbh | Ölabscheideelement |
US20080127953A1 (en) * | 2006-12-01 | 2008-06-05 | Toyota Engineering & Manufacturing North America, Inc. | Engine Head Cover Assembly Having An Integrated Oil Separator |
DE102007045865B4 (de) * | 2006-12-08 | 2015-12-31 | BRUSS Sealing Systems GmbH | Ölabscheider-Einsatz für eine Haube oder ein Gehäuse eines Verbrennungsmotors |
US20080135030A1 (en) * | 2006-12-08 | 2008-06-12 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil separator insert for a cover of an internal combustion engine |
DE102008003970A1 (de) * | 2008-01-11 | 2009-07-16 | Magna Powertrain Ag & Co Kg | Entlüftungseinrichtung |
US7771500B2 (en) * | 2008-03-25 | 2010-08-10 | International Truck Intellectual Property Company, Llc | Transit bus intake air management box |
US9248383B2 (en) * | 2008-04-08 | 2016-02-02 | Waters Technologies Corporation | Composite materials containing nanoparticles and their use in chromatography |
WO2012018596A2 (en) * | 2010-07-26 | 2012-02-09 | Waters Technologies Corporation | Superficially porous materials comprising a substantially nonporous hybrid core having narrow particle size distribution; process for the preparation thereof; and use thereof for chromatographic separations |
EP2335799A1 (de) | 2009-12-04 | 2011-06-22 | Nifco UK Limited | Trennsystem zum Trennen von festen oder flüssigen, in einem Gas verteilten Partikeln |
DE102010004910A1 (de) * | 2010-01-19 | 2011-07-21 | GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. | Ölabscheidevorrichtung |
DE102010033955A1 (de) | 2010-08-10 | 2012-02-16 | Thyssenkrupp Presta Teccenter Ag | Hohlkörper mit integrierter Ölabscheideeinrichtung |
JP5890153B2 (ja) * | 2011-11-21 | 2016-03-22 | 株式会社マーレ フィルターシステムズ | 内燃機関のオイルセパレータ |
JP6167072B2 (ja) * | 2014-07-24 | 2017-07-19 | 本田技研工業株式会社 | 内燃機関のオイル分離装置 |
WO2015068398A1 (ja) | 2013-11-08 | 2015-05-14 | 本田技研工業株式会社 | 内燃機関のオイル分離装置 |
CN105115206B (zh) * | 2015-09-11 | 2018-01-19 | 珠海格力电器股份有限公司 | 立式油分离器内筒、立式油分离器及布置方法 |
US10661210B2 (en) | 2015-09-15 | 2020-05-26 | Miniature Precision Components, Inc. | Oil separator including spiral members defining helical flow paths |
US10286347B2 (en) | 2015-09-15 | 2019-05-14 | Miniature Precision Components, Inc. | Oil separator including spiral members defining helical flow paths |
GB2552986B (en) * | 2016-08-17 | 2020-09-16 | Nifco Inc | A device for separating oil from a blow-by gas |
CA3027567C (en) | 2017-12-20 | 2023-02-21 | Miniature Precision Components, Inc. | Oil separator including spiral members defining helical flow paths |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4966703A (en) * | 1987-11-24 | 1990-10-30 | Conoco Specialty Products Inc. | Cyclone separator |
US5466384A (en) * | 1992-11-05 | 1995-11-14 | Institut Francais Du Petrole | Device and process for carrying out phase separation by filtration and centrifugation |
DE19700733A1 (de) | 1997-01-11 | 1998-07-23 | Bosch Gmbh Robert | Kurbelgehäuse-Entlüftung mit integrierten Zusatzfunktionen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29700579U1 (de) * | 1997-01-15 | 1997-03-13 | Mann & Hummel Filter | Anordnung zum Abscheiden von Flüssigkeitspartikeln aus einem Gasstrom |
US6290738B1 (en) * | 1999-07-16 | 2001-09-18 | Nelson Industries, Inc. | Inertial gas-liquid separator having an inertial collector spaced from a nozzle structure |
-
2001
- 2001-06-07 DE DE10127820A patent/DE10127820A1/de not_active Withdrawn
-
2002
- 2002-03-16 US US10/343,653 patent/US6860915B2/en not_active Expired - Fee Related
- 2002-03-16 EP EP02735002A patent/EP1399650A1/de not_active Withdrawn
- 2002-03-16 JP JP2003502348A patent/JP2004521237A/ja not_active Withdrawn
- 2002-03-16 WO PCT/DE2002/000964 patent/WO2002099256A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4966703A (en) * | 1987-11-24 | 1990-10-30 | Conoco Specialty Products Inc. | Cyclone separator |
US5466384A (en) * | 1992-11-05 | 1995-11-14 | Institut Francais Du Petrole | Device and process for carrying out phase separation by filtration and centrifugation |
DE19700733A1 (de) | 1997-01-11 | 1998-07-23 | Bosch Gmbh Robert | Kurbelgehäuse-Entlüftung mit integrierten Zusatzfunktionen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8171920B2 (en) | 2005-12-20 | 2012-05-08 | 3nineAB | Device for cleaning crank case gases |
Also Published As
Publication number | Publication date |
---|---|
US6860915B2 (en) | 2005-03-01 |
DE10127820A1 (de) | 2002-12-12 |
WO2002099256A8 (de) | 2003-04-10 |
EP1399650A1 (de) | 2004-03-24 |
JP2004521237A (ja) | 2004-07-15 |
US20040003579A1 (en) | 2004-01-08 |
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