WO2003076786A1 - Mehrteiliger gekühlter kolben für einen verbrennungsmotor - Google Patents
Mehrteiliger gekühlter kolben für einen verbrennungsmotor Download PDFInfo
- Publication number
- WO2003076786A1 WO2003076786A1 PCT/DE2002/002960 DE0202960W WO03076786A1 WO 2003076786 A1 WO2003076786 A1 WO 2003076786A1 DE 0202960 W DE0202960 W DE 0202960W WO 03076786 A1 WO03076786 A1 WO 03076786A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- support
- rib
- annular
- cooled
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
Definitions
- the invention relates to a multi-part cooled piston for an internal combustion engine, consisting of a one-piece piston upper part, which comprises a combustion bowl and an annular wall with a ring section, and a one-piece piston lower part, which has a box-shaped piston shaft, hubs for receiving the piston pin connecting the piston to the connecting rod and hub supports, which are connected to the piston skirt, wherein a cooling channel is formed by the upper piston part and the lower piston part and its cross section is limited by these.
- Pistons of this type are known, for example, from DE-PS 800 350, DE-OS 2 212 922, EP 0 604 223 A1, Jp 60-143148, Jp 60-178345.
- These pistons essentially have central screw connections and thus have the known disadvantages of so-called built pistons, in which the punctiform connection of the upper and lower parts of the piston results in a relative movement between the two piston components which causes wear and tear.
- the screw connections have been moved to the outer piston edge area in the past, as for example from FR 753,615 or US 2,159,989 known.
- these constructions known from the 1930s are not comparable with the concepts of modern pistons, since they were designed for much lower combustion chamber pressures.
- combustion bowls cannot be made possible with such constructions.
- a piston is also known from DD123 962, in which a wear-resistant piston ring field is produced by mechanically connecting a piston base body to a top land and the ring element forming the ring field or part of the ring field from any suitable material - screwed here - and securing it against loosening is.
- the disadvantage is that only the ring field is made of wear-resistant material and high compression pressures with a low piston height cannot be achieved.
- the invention is therefore concerned with the problem of finding a piston concept for a multi-part cooled piston for an internal combustion engine which, with increasing engine output, allows the compression height to be reduced and the heat load to be increased, and which enables the piston to be assembled without changing the structure.
- the upper piston part and the lower piston part have support means with contact surfaces which form a first and second support, the first support comprising support means of the upper and lower part of the thread for screwing both piston parts.
- first support comprising support means of the upper and lower part of the thread for screwing both piston parts.
- both piston parts are supported only via the first and second supports.
- the mechanical stability achieved in this way is superior to a welded piston part connection due to the avoidance of internal stresses.
- this stability is achieved by the arrangement of the supports in relation to the piston diameter in that the first support is arranged radially on the inside and the second radially on the outside and that these supports are arranged in different planes with respect to the piston height, so that effective inner and outer support is provided is achieved.
- part of the support means which are designed as a ring and ring-shaped support rib, has a thread for screwing the piston parts, the ring rib in its wall construction being designed in such a way that an elastic deformation as a result of this is exerted on the piston crown Combustion chamber pressure is made possible without reducing the stability of the screw connection.
- the positional arrangement of the support means which are defined by the radii extending from the longitudinal axis of the piston in the radial direction to the piston surface, advantageously derives the flow of force from the piston head via the support means to the hub supports or piston pins in an effective manner without overloading the piston material. Damage due to mechanical stress, such as stress cracks, can thus be effectively avoided.
- the inventive construction has the advantage that the centering of the upper piston part to the lower piston part does not take place through the screw connection, but rather through wall areas of a step-like design of the support means, which forms the second, that is to say outer, support.
- upper piston parts made of heat-resistant steel and lower piston parts consisting of forged AFP steel can be connected particularly simply and inexpensively.
- Fig. 1 shows a piston according to the invention in cross section, cut in
- Fig. 3 shows an enlarged section marked by a circle
- the multi-part cooled piston 20 consists of an upper piston part 1, which comprises a combustion bowl 3 and an annular wall 4 with ring section 11, and a lower piston part 2, comprising a box-shaped piston shaft 9, hubs for receiving the piston the connecting rod connecting piston pin (not shown) and hub supports 6, which are connected to the piston shaft 9.
- a cooling channel 7 is formed by the upper piston part 1 and lower piston part 2 and its cross section is limited by these.
- the upper piston part 1 has support means which consists of an annular support surface 10a arranged on the bottom side facing away from the combustion bowl 3, part of the horizontal cross-sectional area 12a of the annular wall 4 and an annular rib 5.
- Support means are also provided on the lower piston part 2 and consist of an annular support rib 13, the cross-sectional area 10b of the support rib 13 and an annular support web 14.
- the annular support surface 10a and the cross-sectional area 10b of the annular support rib 13 serve to form a first flat and horizontal support 10 for both piston parts 1, 2, the support O being arranged radially on the inside with respect to the piston diameter D and forming an inner support.
- a second, flat and horizontally arranged support 12 for both piston parts consists of the horizontal part of the cross-sectional area 12a of the ring wall 4 and the cross-sectional area 12b of the annular support web 14, so that a step-shaped design of the support web 14 is formed, through which the upper piston part is centered.
- the first and second supports are arranged with respect to the piston height in different horizontal planes E1 and E2, which are characterized by the height H.
- a thread 8 for screwing the upper piston part 1 and the lower piston part 2 is designed as an external thread on the circumferential side of the annular rib 5 that is radially outward with respect to the piston diameter and as an internal thread on the radially inward circumferential side of the annular support rib 13.
- the ring rib 5 pointing towards the pin hub shows an at least partially cylindrical or conical section 13a in the axial piston direction, which carries the thread and runs parallel to the piston axis (K), the cylindrical or conical section 13a of the ring rib a section 13b follows in the direction of the combustion bowl 3 with reduced wall thickness. This creates an elastic area that can absorb the mechanical stresses generated by the combustion chamber pressure and discharge it to the piston pin.
- the thread-bearing peripheral side of the ring rib 5 has a radius Rivi a n t ei (RM), which is in one area
- Riviantei ⁇ center of the hub support (RMN) and RMantle> inner end of the hub support (RlEM) is arranged, whereby all radii are defined starting from the longitudinal axis of the piston (K) in the radial direction to the piston skirt surface and the radii "center of the hub support” and “inner end the hub support "are related to the zenith of the hub bore (Nz), as shown in FIGS. 1 and 2.
- Both piston parts are assembled by centering the upper piston part 1 to the lower piston part 2 by means of the wall region 4a projecting with respect to the supporting rib 13 and then screwing onto the lower piston part.
- the height H (distance of the planes E1, E2) of the first to the second support 10, 12 is designed in such a way that a height difference of approximately 50 ⁇ m first touches the outer support surfaces 12a, 12b and after a further rotary movement to overcome the height difference the inner contact surfaces 10a, 10b, so that the cooling channel 7 formed in the completely screwed state of the upper piston part 1 with the lower piston part 2 is sealed only by the contact surfaces 10a, 10b, 12a, 12b. Due to the large diameter, the thread is self-locking.
- an adapter sleeve can be provided below the third groove, which is attached radially.
- the upper piston part 1 can consist of an oxidation-resistant and / or heat-resistant material. Steels with chrome contents> 4% from the material groups of the chemically resistant steels are typically used. DIN EN 10027-2 (steel group numbers 1.4x xx) such as stainless, high-temperature or heat-resistant steels, as well as from the material group of alloyed tool steels, such as alloyed hot-work steels.
- the lower part of the piston consists of a precipitation hardening ferritic-pearlitic steel or tempering steel, whereby the steel grades 38MnVS6 or 42CrMo4 are typically used (according to German steel-iron material sheet 101).
- reference numeral 38MnVS6 or 42CrMo4 are typically used (according to German steel-iron material sheet 101).
- Support rib 13 Cylindrical portion of the support rib 13a not cylindrical. Section of the support rib 13b
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003574975A JP2005527725A (ja) | 2002-03-09 | 2002-08-13 | 内燃機関に用いられる、複数の部分から成る冷却されるピストン |
DE50203435T DE50203435D1 (de) | 2002-03-09 | 2002-08-13 | Mehrteiliger gekühlter kolben für einen verbrennungsmotor |
BRPI0215633-4A BR0215633B1 (pt) | 2002-03-09 | 2002-08-13 | êmbolo composto refrigerado para um motor de combustão interna. |
KR1020047014091A KR100893015B1 (ko) | 2002-03-09 | 2002-08-13 | 내연기관용 다부품 냉각 피스톤 |
EP02772020A EP1483493B1 (de) | 2002-03-09 | 2002-08-13 | Mehrteiliger gekühlter kolben für einen verbrennungsmotor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10210570A DE10210570A1 (de) | 2002-03-09 | 2002-03-09 | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
DE10210570.7 | 2002-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003076786A1 true WO2003076786A1 (de) | 2003-09-18 |
Family
ID=27762851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/002960 WO2003076786A1 (de) | 2002-03-09 | 2002-08-13 | Mehrteiliger gekühlter kolben für einen verbrennungsmotor |
Country Status (7)
Country | Link |
---|---|
US (1) | US6763758B2 (de) |
EP (1) | EP1483493B1 (de) |
JP (1) | JP2005527725A (de) |
KR (1) | KR100893015B1 (de) |
BR (1) | BR0215633B1 (de) |
DE (2) | DE10210570A1 (de) |
WO (1) | WO2003076786A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7628135B2 (en) | 2005-12-23 | 2009-12-08 | Mahle International Gmbh | Multi-part piston for an internal combustion engine |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10218477A1 (de) * | 2002-04-25 | 2003-11-20 | Mahle Gmbh | Gekühlter zweiteiliger Kolben |
DE10337961A1 (de) * | 2003-08-19 | 2005-04-21 | Mahle Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor |
DE10340291A1 (de) | 2003-09-02 | 2005-04-14 | Mahle Gmbh | Kolben für einen Verbrennungsmotor |
DE102004061778A1 (de) | 2004-09-29 | 2006-04-06 | Ks Kolbenschmidt Gmbh | Einfach-Reibschweißung |
DE102004057624A1 (de) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor |
JP4315128B2 (ja) * | 2005-06-15 | 2009-08-19 | トヨタ自動車株式会社 | ピストン及びピストン装置 |
DE102006013906A1 (de) * | 2006-03-25 | 2007-10-18 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor |
DE102006030699B4 (de) * | 2006-06-30 | 2014-10-02 | Daimler Ag | Gegossener Stahlkolben für Verbrennungsmotoren |
US7533601B2 (en) | 2006-12-12 | 2009-05-19 | Mahle Technology, Inc. | Multi-part piston for a combustion engine |
US8171842B2 (en) * | 2007-06-20 | 2012-05-08 | Mahle International Gmbh | Two-piece twist lock piston |
DE102007031400A1 (de) * | 2007-07-05 | 2009-01-08 | Ks Kolbenschmidt Gmbh | Einteiliger Kühlkanalkolben mit zwei miteinander verschraubten Kolbenteilen |
US7918155B2 (en) * | 2007-12-12 | 2011-04-05 | Mahle International Gmbh | Piston with a cooling gallery |
DE102007061601A1 (de) * | 2007-12-20 | 2009-06-25 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung |
DE102008045456A1 (de) * | 2008-09-02 | 2010-03-04 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102008056203A1 (de) | 2008-11-06 | 2010-05-12 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102009015820A1 (de) | 2009-04-01 | 2010-10-07 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102009032941A1 (de) | 2009-07-14 | 2011-01-20 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102009032912A1 (de) | 2009-07-14 | 2011-01-20 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor |
EP2462366B1 (de) * | 2009-08-06 | 2020-07-15 | Tenneco Inc. | Kolben von geringer wärmeleitfähigkeit und konstruktionsverfahren dafür |
US8807109B2 (en) | 2009-11-06 | 2014-08-19 | Federal-Mogul Corporation | Steel piston with cooling gallery and method of construction thereof |
DE102010053925A1 (de) * | 2010-12-09 | 2012-06-14 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102011113800A1 (de) * | 2011-09-20 | 2013-03-21 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
CN104005876B (zh) * | 2014-05-26 | 2017-01-18 | 滨州东海龙活塞有限公司 | 一种螺纹焊接式整体锻钢活塞 |
CN104390766A (zh) * | 2014-09-25 | 2015-03-04 | 中国北方发动机研究所(天津) | 一种分层式活塞热传递试验装置 |
CN108138692B (zh) * | 2015-10-08 | 2022-02-11 | Ks科尔本施密特有限公司 | 具有外螺纹连接部的活塞 |
KR101593543B1 (ko) * | 2016-01-04 | 2016-02-16 | 동양피스톤 주식회사 | 내연기관용 피스톤 |
DE102016102636A1 (de) * | 2016-02-15 | 2017-08-17 | Werner Schütze | Kolben für eine Hubkolbenbrennkraftmaschine und Verfahren zum Herstellen eines solchen |
DE102016202420A1 (de) * | 2016-02-17 | 2017-08-17 | Hirschvogel Umformtechnik Gmbh | Kolben für Verbrennungsmotor |
DE102017109471A1 (de) | 2016-05-04 | 2017-11-09 | Ks Kolbenschmidt Gmbh | Kolben |
US11067033B2 (en) | 2017-05-17 | 2021-07-20 | Tenneco Inc. | Dual gallery steel piston |
EP3470655B1 (de) * | 2017-10-10 | 2020-04-22 | Lombardini S.r.l. | Kolben und verfahren zur herstellung davon |
CN113431698B (zh) * | 2020-03-23 | 2023-04-11 | 强莉莉 | 一种分体复合式隔热活塞 |
US11519358B2 (en) * | 2020-11-05 | 2022-12-06 | Industrial Parts Depot, Llc | Tri-weld piston |
CN113187618B (zh) * | 2021-05-08 | 2022-09-20 | 滨州学院 | 一种轻量化内冷一体铝活塞 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR753615A (fr) | 1932-07-21 | 1933-10-20 | Piston pour moteurs à explosion ou autres | |
US2159989A (en) | 1937-04-19 | 1939-05-30 | Gen Motors Corp | Welded two-piece light alloy piston |
DE800350C (de) | 1948-11-10 | 1950-10-30 | Mahle Kg | Leichtmetallkolben fuer Brennkraftmaschinen |
DE2212922A1 (de) | 1972-03-17 | 1973-09-27 | Schmidt Gmbh Karl | Gebauter kolben fuer verbrennungskraftmaschinen |
GB1343377A (en) * | 1971-06-14 | 1974-01-10 | Amo Soc | Lightweight metal piston with circulating fluid cooling |
DD123962A1 (de) | 1975-12-24 | 1977-01-26 | ||
JPS60143148A (ja) | 1983-12-29 | 1985-07-29 | Nissan Motor Co Ltd | 車両用ライト点灯回路 |
JPS60178345A (ja) | 1984-01-20 | 1985-09-12 | ユナイテッド キングドム アトミック エナ↓−ヂイ オ↓−ソリテイ | 電気泳動分離器 |
DE3523910A1 (de) * | 1985-07-04 | 1986-01-23 | Mahle Gmbh, 7000 Stuttgart | Gebauter fluessigkeitsgekuehlter kolben |
EP0469666B1 (de) * | 1990-07-31 | 1994-03-09 | Borgo-Nova SpA | Hubkolben |
EP0604223A1 (de) | 1992-12-23 | 1994-06-29 | GENERAL ELECTRIC CANADA, Inc. | Kolbenskopf fur Dieselmotor |
WO2000006882A1 (en) | 1998-07-28 | 2000-02-10 | Federal-Mogul Corporation | One-piece integral skirt piston and method of making the same |
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DE37135C (de) * | R. PERL und J. PETRASCH in Wien-Hernals, Leitermeyer-Gasse 1 | Neuerung an Trinkglas-Untersätzen mit einer aus Zeiger und Zeigerscheibe bestehenden Zählvorrichtung | ||
DE281030C (de) * | ||||
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FR1337311A (fr) * | 1962-07-03 | 1963-09-13 | Perfectionnements aux pistons de moteurs thermiques, en particulier à deux temps | |
FR1429327A (fr) * | 1964-12-29 | 1966-02-25 | Hispano Suiza Sa | Perfectionnements apportés aux pistons pour moteurs à combustion interne |
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JPS63235648A (ja) * | 1987-03-23 | 1988-09-30 | Mazda Motor Corp | エンジンの断熱ピストン構造 |
JP2560424B2 (ja) * | 1988-06-17 | 1996-12-04 | いすゞ自動車株式会社 | エンジンの構造 |
DE4429489A1 (de) * | 1994-08-19 | 1996-02-22 | Mahle Gmbh | Gebauter Kolben für Verbrennungsmotoren |
DE19910582A1 (de) * | 1999-03-10 | 2000-09-28 | Mahle Gmbh | Gebauter Kolben |
US6491013B1 (en) * | 2001-09-19 | 2002-12-10 | Federal-Mogul World Wide, Inc. | Closed gallery piston having reinforced oil hole |
-
2002
- 2002-03-09 DE DE10210570A patent/DE10210570A1/de not_active Withdrawn
- 2002-08-13 KR KR1020047014091A patent/KR100893015B1/ko not_active IP Right Cessation
- 2002-08-13 DE DE50203435T patent/DE50203435D1/de not_active Expired - Lifetime
- 2002-08-13 BR BRPI0215633-4A patent/BR0215633B1/pt not_active IP Right Cessation
- 2002-08-13 JP JP2003574975A patent/JP2005527725A/ja active Pending
- 2002-08-13 WO PCT/DE2002/002960 patent/WO2003076786A1/de active IP Right Grant
- 2002-08-13 EP EP02772020A patent/EP1483493B1/de not_active Expired - Fee Related
- 2002-09-18 US US10/246,135 patent/US6763758B2/en not_active Expired - Fee Related
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR753615A (fr) | 1932-07-21 | 1933-10-20 | Piston pour moteurs à explosion ou autres | |
US2159989A (en) | 1937-04-19 | 1939-05-30 | Gen Motors Corp | Welded two-piece light alloy piston |
DE800350C (de) | 1948-11-10 | 1950-10-30 | Mahle Kg | Leichtmetallkolben fuer Brennkraftmaschinen |
GB1343377A (en) * | 1971-06-14 | 1974-01-10 | Amo Soc | Lightweight metal piston with circulating fluid cooling |
DE2212922A1 (de) | 1972-03-17 | 1973-09-27 | Schmidt Gmbh Karl | Gebauter kolben fuer verbrennungskraftmaschinen |
DD123962A1 (de) | 1975-12-24 | 1977-01-26 | ||
JPS60143148A (ja) | 1983-12-29 | 1985-07-29 | Nissan Motor Co Ltd | 車両用ライト点灯回路 |
JPS60178345A (ja) | 1984-01-20 | 1985-09-12 | ユナイテッド キングドム アトミック エナ↓−ヂイ オ↓−ソリテイ | 電気泳動分離器 |
DE3523910A1 (de) * | 1985-07-04 | 1986-01-23 | Mahle Gmbh, 7000 Stuttgart | Gebauter fluessigkeitsgekuehlter kolben |
EP0469666B1 (de) * | 1990-07-31 | 1994-03-09 | Borgo-Nova SpA | Hubkolben |
EP0604223A1 (de) | 1992-12-23 | 1994-06-29 | GENERAL ELECTRIC CANADA, Inc. | Kolbenskopf fur Dieselmotor |
WO2000006882A1 (en) | 1998-07-28 | 2000-02-10 | Federal-Mogul Corporation | One-piece integral skirt piston and method of making the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7628135B2 (en) | 2005-12-23 | 2009-12-08 | Mahle International Gmbh | Multi-part piston for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP1483493A1 (de) | 2004-12-08 |
BR0215633A (pt) | 2004-12-21 |
JP2005527725A (ja) | 2005-09-15 |
KR20040088582A (ko) | 2004-10-16 |
KR100893015B1 (ko) | 2009-04-15 |
US20030167918A1 (en) | 2003-09-11 |
EP1483493B1 (de) | 2005-06-15 |
US6763758B2 (en) | 2004-07-20 |
BR0215633B1 (pt) | 2011-02-22 |
DE10210570A1 (de) | 2003-09-18 |
DE50203435D1 (de) | 2005-07-21 |
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