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US 2012/0222636 A1Published application
Variable valve actuation mechanism for overhead-cam engines with an oscillating/sliding follower
AssigneeGM Global Technology Operations LLC
InventorBurak A. Gecim
Life of this patent
Estimating the term…
Abstract
A finger follower apparatus to effect opening of an engine valve includes a first member with first and second opposite ends. The first member is pivotally fixed at the first end and operatively engaged with the engine valve at the second end. A second member is slidably engaged with the first member and carries a roller for engagement with a cam.
Claims14
A finger follower apparatus to effect opening of an engine valve, comprising:
- a first member including first and second opposite ends, the first member being pivotally fixed at the first end and operatively engaged with the engine valve at the second end;
- and
- a second member slidably engaged with the first member and carrying a roller for engagement with a cam.
A finger follower apparatus to effect opening of an engine valve, comprising:
- a first member including first and second opposite ends, the first member being pivotally fixed at the first end and operatively engaged with the engine valve at the second end;
- and
- a second member slidably engaged with the first member and carrying a first roller engaged with a cam, said second member having a control surface which when cooperatively engaged with a second roller in response to said cam rotation establishes a valve lift profile for the engine valve.
A finger follower apparatus to effect opening of an engine valve, comprising:
- an elongated base including a first end, a slidable surface, and a second end wherein the first end includes a pivot point about a valve lash adjuster and the second end includes a valve contact surface for contacting the engine valve;
- a control guide slidably interconnected to the slidable surface of the elongated base, the control guide including a cam follower and a control surface;
- and
- a valve lift actuator extendable to a predetermined position to engage the control surface of the control guide, the predetermined position selectable over a range between a fully extended position and a fully retracted position.
1 more element
Dependencies are inferred from the claim text.