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AssigneeDelphi Technologies, Inc.
InventorsHermes A. Fernandez, Ryan D. Fogarty, Jongmin Lee, Wayne S. Harris, Michael E. McCarroll, Nick J. Hendriksma
Estimating the term…
A system for selectively switching the action of a valve in an internal combustion engine includes a roller finger follower having a frame and a disengageable roller. A two-part axial pin for the roller axle is spring-loaded to urge the pin axially of the roller axle to disengage the first part of the pin from the follower frame and simultaneously disengage the second part of the pin from the roller axle. Thus the roller becomes detached from the frame and the follower cannot actuate its designated valve. The roller and pins are retained within the frame by at least one torsion spring. The pins may be controllably reinserted into the sides of the roller and frame to reconnect the roller to the frame by any of various electromechanical and/or hydraulic means. When used in conjunction with a camshaft having high lift and low lift cam lobes, the deactivated follower will then actuate its designated valve according to the profile of the low lift lobes, which may be a no lift profile.
A system for selectively switching the action of a valve in an internal combustion engine, comprising:
A system for selectively switching the action of the intake and exhaust valves of a plurality of cylinders in a multi-cylinder internal combustion engine, comprising:
A multi-cylinder internal combustion engine comprising means for mode switching at least one valve for at least one of said cylinders, said means including a mode switching roller finger follower operationally disposable in said engine between a camshaft lobe and valve actuation means, said follower having a frame and having a roller disposed for rotation in said frame, and having means for controllably causing said roller to be alternately connected to and disconnected from said frame, and actuation means for directing said means for causing.
Dependencies are inferred from the claim text.