(19)

(11)

EP 2 534 339 A2

(12)

(88) Date of publication A3: 27.09.2012 (43) Date of publication: 19.12.2012 Bulletin 2012/51 (21) Application number: 11709168.6 (22) Date of filing: 14.02.2011

(51) International Patent Classification (IPC):  F01C 1/16(2006.01) (86) International application number: PCT/GB2011/050275 (87) International publication number: WO 2011/098835 (18.08.2011 Gazette 2011/33)

(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: 12.02.2010 GB 201002411 (71) Applicant: The City University London EC1V 0HB (GB)	(72) Inventors: SMITH, Ian Kenneth London EC1V 0HB (GB) STOSIC, Nikola Rudi London EC1V 0HB (GB) (74) Representative: Cummings, Sean Patrick et al Keltie LLP Fleet Place House 2 Fleet Place London EC4M 7ET London EC4M 7ET (GB)