Variable cam timing system and method

(19)

(11)

EP 1 046 793 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	21.08.2002 Bulletin 2002/34

(43)	Date of publication A2:
	25.10.2000 Bulletin 2000/43

(21)	Application number: 00302306.6

(22)	Date of filing: 22.03.2000

(51)	International Patent Classification (IPC)⁷: F01L 1/34, F01L 1/344, F01M 9/10, F01L 1/053, F01M 11/02, F01L 1/02, F02D 13/02

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

21.04.1999 US 295525

(71)	Applicant: Ford Global Technologies, Inc.
	Dearborn, Michigan 48126 (US)

(72)	Inventors:
	Dimaria, Anthony Frank Canton, Michigan 48188 (US) Vivier, John Paul Livonia, Michigan 48152 (US)

(74)	Representative: Messulam, Alec Moses et al
	A. Messulam & Co. Ltd., 43-45 High Road Bushey Heath, Herts WD23 1EE Bushey Heath, Herts WD23 1EE (GB)

(54)	Variable cam timing system and method

(57) An apparatus and method for supplying pressurised fluid to a variable cam timing phasing unit. A bearing is secured to the engine for rotatably supporting the cam shaft. The bearing has an inlet for pressurised fluid and a pair of outlets for the pressurised fluid. One of the outlets is associated with relatively advancing cam timing and the other of the outlets is associated with relatively retarding cam timing. A solenoid valve selectively routes pressurised fluid between the inlet and one of the outlets.

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