(19)

(11)

EP 1 682 753 A1

(12)

(43) Date of publication: 26.07.2006 Bulletin 2006/30 (21) Application number: 04793867.5 (22) Date of filing: 27.10.2004

(51) International Patent Classification (IPC):  F01N 3/02(2006.01) (86) International application number: PCT/SE2004/001567 (87) International publication number: WO 2005/042935 (12.05.2005 Gazette 2005/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 27.10.2003 SE 0302836 (71) Applicant: VOLVO LASTVAGNAR AB 405 08 Göteborg (SE)	(72) Inventor: NYGREN, Lennart S-430 63 Hindås (SE) (74) Representative: Fröhling, Werner Otto et al Volvo Technology Corporation, Corporate Patents, 06820, M1.7 405 08 Göteborg 405 08 Göteborg (SE)