(19)

(11)

EP 1 960 646 A1

(12)

(43) Date of publication: 27.08.2008 Bulletin 2008/35 (21) Application number: 06824472.2 (22) Date of filing: 24.11.2006

(51) International Patent Classification (IPC):  F01P 11/02(2006.01) (86) International application number: PCT/SE2006/001332 (87) International publication number: WO 2007/067118 (14.06.2007 Gazette 2007/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 05.12.2005 SE 0502676 (71) Applicant: Volvo Lastvagnar AB 405 08 Göteborg (SE)	(72) Inventors: DAHL, Erik S-418 71 Göteborg (SE) NILSSON, Peter S-412 52 Göteborg (SE) (74) Representative: Fröhling, Werner Otto  Volvo Technology Corporation Corporate Patents 06820, M1.7 405 08 Göteborg 405 08 Göteborg (SE)