(19)

(11)

EP 0 901 588 A1

(12)

(43) Date of publication: 17.03.1999 Bulletin 1999/11 (21) Application number: 97924127.0 (22) Date of filing: 29.05.1997

(51) International Patent Classification (IPC):  F02D 9/ 06( . ) F16K 1/ 22( . ) F02D 9/ 10( . ) F16K 1/ 24( . ) (86) International application number: PCT/GB1997/001460 (87) International publication number: WO 1997/046818 (11.12.1997 Gazette 1998/01)

(84) Designated Contracting States: BE DE ES FR GB IT SE (30) Priority: 01.06.1996 GB 19960011484 (71) Applicant: WABCO AUTOMOTIVE U.K. LIMITED Morley, Leeds, LS27 0HQ (GB)	(72) Inventor: KEEGAN, Colm Michael Patrick Nettleham, Lincoln LN2 2PN (GB) (74) Representative: Chettle, Adrian John, et al  Withers & Rogers, Goldings House, 2 Hays Lane London SE1 2HW London SE1 2HW (GB)