(19)

(11)

EP 2 171 219 A2

(12)

(88) Date of publication A3: 19.02.2009 (43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 08772084.3 (22) Date of filing: 26.06.2008

(51) International Patent Classification (IPC):  F01D 17/12(2006.01) F04B 17/00(2006.01) F02D 23/00(2006.01) (86) International application number: PCT/US2008/068433 (87) International publication number: WO 2009/003144 (31.12.2008 Gazette 2009/01)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 26.06.2007 US 946208 P (71) Applicant: BorgWarner Inc. Auburn Hills, MI 48326 (US)	(72) Inventors: SIMON, Volker 76829 Landau (DE) WEBER, Mathias 67659 Kaiserslautern (DE) ANSCHEL, Paul Asheville, NC 28803 (US) (74) Representative: Schmitz, Hans-Werner  Hoefer & Partner Patentanwälte Pilgersheimer Strasse 20 81543 München 81543 München (DE)