(19)

(11)

EP 1 966 467 A2

(12)

(43) Date of publication: 10.09.2008 Bulletin 2008/37 (21) Application number: 05855286.0 (22) Date of filing: 22.12.2005

(51) International Patent Classification (IPC):  F01N 3/00(2006.01) (86) International application number: PCT/US2005/046701 (87) International publication number: WO 2007/078274 (12.07.2007 Gazette 2007/28)

(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 Designated Extension States: AL BA HR MK YU (71) Applicant: Volvo Trucks North America, Inc. Greensboro, North Carolina 27409 (US)	(72) Inventor: LANGERVIK, Dennis Greensboro, NC 27455 (US) (74) Representative: Fröhling, Werner Otto et al Volvo Technology Corporation Corporate Patents 06820, M1.7 405 08 Göteborg 405 08 Göteborg (SE)