The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2002
Filed:
Dec. 17, 2001
Nick J. Hendriksma, Grand Rapids, MI (US);
Wayne S. Harris, Hilton, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A control system for variable activation of valves in an internal combustion engine. A solenoid is disposed on the outer surface of the valve cam cover to avoid exposure to the hot-oil environment within the valve activation chamber. The solenoid armature extends through the cam cover into the valve activation chamber. A bellcrank is mounted between the solenoid armature and the latching pin of a latchable cam finger follower such that energizing and de-energizing of the solenoid causes corresponding actuation and deactuation of the finger follower, which may be suitable for high-lift and low-lift activation. Preferably, the bellcrank is compliant such that when the solenoid is actuated during the lift portion of the valve cycle the pin is placed under compression so that the pin is subsequently actuated into latching position when the follower moves to the base circle portion of the valve cam. Preferably, for a plurality of such systems on an individual engine, the solenoids are provided with connecting pins on an upper surface thereof and are held in place by a retainer containing an overmolded wiring bundle which automatically connects correctly to each solenoid upon installation of the retainer onto the engine.