(19)

(11)

EP 0 380 561 A1

(12)

(43) Date of publication: 08.08.1990 Bulletin 1990/32 (21) Application number: 88908873.0 (22) Date of filing: 12.09.1988

(51) International Patent Classification (IPC):  F02D 9/ 10( . ) F02M 3/ 06( . ) F02M 3/ 07( . ) (86) International application number: PCT/US1988/003133 (87) International publication number: WO 1989/002981 (06.04.1989 Gazette 1989/08)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 02.10.1987 US 19870104798 (71) Applicant: SIEMENS AKTIENGESELLSCHAFT Berlin und München D-8000 München 22 (DE)	(72) Inventor: COOK, John, Edward Chatham, Ontario N7L 258 (CA)