Locking mechanism for a camshaft phaser

(19)

(11)

EP 2 006 499 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	31.12.2008 Bulletin 2009/01

(43)	Date of publication A2:
	24.12.2008 Bulletin 2008/52

(21)	Application number: 07252293.1

(22)	Date of filing: 07.06.2007

(51)

International Patent Classification (IPC):

F01L 1/344^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

(71)	Applicant: DELPHI TECHNOLOGIES, INC.
	Troy, MI 48007-5052 (US)

(72)	Inventor:
	Berndorfer, Axel H 54453 Nittel (DE)

(74)	Representative: Murgitroyd, Ian George
	Murgitroyd and Company 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)

(54)	Locking mechanism for a camshaft phaser

(57) A locking means for a variable cam phaser (1) comprises a locking pin to maintain a relative angular orientation between a drive (2) and driven (3) members; biasing means (14) being provided for biasing said locking pin (10) to its locked position; a portion of the locking pin (10) being exposed to a chamber (22), said chamber (22) being selectively communicable with a source of pressurised fluid whereby pressurisation of said chamber (22) with high pressure fluid urges the locking pin (11) to its unlocked position; actuating means being provided for selectively placing said chamber (22) in fluid communication with said source of pressurised fluid.

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