Method and apparatus for two-step cam profile switching

(19)

(11)

EP 1 149 988 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	14.11.2001 Bulletin 2001/46

(43)	Date of publication A2:
	31.10.2001 Bulletin 2001/44

(21)	Application number: 01201493.2

(22)	Date of filing: 25.04.2001

(51)	International Patent Classification (IPC)⁷: F01L 1/26

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

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Priority:

26.04.2000 US 199716 P

(71)	Applicant: Delphi Technologies, Inc.
	Troy, MI 48007 (US)

(72)	Inventors:
	Spath, Mark. J. Spencerport, NY 14559 (US) Fernandez, Hermes A. Rochester, NY 14607 (US) Hendriksma, Nick J. Grand Rapids, MI 49546 (US)

(74)	Representative: Denton, Michael John et al
	Delphi Automotive Systems Centre Technique Paris 117 avenue des Nations B.P. 60059 95972 Roissy Charles de Gaulle Cedex 95972 Roissy Charles de Gaulle Cedex (FR)

(54)	Method and apparatus for two-step cam profile switching

(57) A two-step roller finger follower (10) includes an elongate body (20). The first (38) and second side (36) member define first and second pin orifices (50,52), respectively. A center roller (26) is disposed between the side members. The center roller defines a shaft orifice (26b) therethrough. A shaft (30) extends through the shaft orifice. A first shaft (30a) end is disposed proximate the first side member, and the second shaft end (30b) is disposed proximate the second side member. The second shaft end defines a shaft bore (82) therein. The first shaft end defines a pin chamber (84) therein. The shaft bore being is substantially concentric with and intersects the pin chamber. A locking pin assembly (22) is disposed partially within the shaft bore, the pin chamber and at least one of the pin orifices. The locking pin assembly has a first position wherein the shaft is decoupled from the body and a second position wherein the shaft is coupled to the body, and is switchable between the first and second positions.

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