Valve open duration and timing controller
Patent
·
OSTI ID:5281160
This patent describes a valve control mechanism for an engine having a valve for controlling fluid flow with respect to a cylinder and a rotating cam driven by the engine. The cam has a lobe having rising and falling cam faces thereon, a cam follower in contact with the cam faces for actuation by the cam faces, a rocker arm pivoted on an axis to act with respect to the valve to open the valve, a push rod, the push rod being actuated by the cam follower and acting against the rocker arm. The improvement comprises: movable means connected to the push rod for moving the push rod with respect to the rocker arm so that the push rod acts at a selected radius on the rocker arm for selecting a desired valve opening distance; and adjustable means for adjusting the total effective length between the contact point of the cam follower with respect to the cam faces and the contact point of the push rod with respect to the rocker arm.
- Assignee:
- NOV; NOV-88-004119; EDB-88-078400
- Patent Number(s):
- US 4723516
- OSTI ID:
- 5281160
- Country of Publication:
- United States
- Language:
- English
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