(19)

(11)

EP 2 486 260 A2

(12)

(88) Date of publication A3: 03.11.2011 (43) Date of publication: 15.08.2012 Bulletin 2012/33 (21) Application number: 10776113.2 (22) Date of filing: 06.10.2010

(51) International Patent Classification (IPC):  F02C 6/12(2006.01) (86) International application number: PCT/GB2010/001866 (87) International publication number: WO 2011/042694 (14.04.2011 Gazette 2011/15)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 23.07.2010 GB 201012389 06.10.2009 GB 0917513 06.04.2010 GB 201005680 (71) Applicant: Cummins Ltd Huddersfield HD1 6RA (GB)	(72) Inventors: HOLROYD, Robert L. Huddersfield HD1 6RA (GB) ROBERTS, Tom J. Huddersfield HD1 6RA (GB) PARKER, John F. Huddersfield HD1 6RA (GB) (74) Representative: Dauncey, Mark Peter et al Marks & Clerk LLP 1 New York Street Manchester, M1 4HD Manchester, M1 4HD (GB)