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. 20, 2011
Filed:
Sep. 18, 2008
John A. Schwoerer, Storrs, CT (US);
Zhou Yang, Oak Ridge, NC (US);
Ryan C. Noss, State College, PA (US);
Brian L. Ruggiero, East Granby, CT (US);
Neil E. Fuchs, New Hartford, CT (US);
John A. Schwoerer, Storrs, CT (US);
Zhou Yang, Oak Ridge, NC (US);
Ryan C. Noss, State College, PA (US);
Brian L. Ruggiero, East Granby, CT (US);
Neil E. Fuchs, New Hartford, CT (US);
Jacobs Vehicle Systems, Inc., Bloomfield, CT (US);
Abstract
A variable valve actuation system to actuate and control the seating velocity of an internal combustion engine valve is disclosed. The system comprises: a housing having a bore formed therein; an outer piston slidably disposed in the bore, said outer piston having an internal hydraulic passage, an internal chamber defined by an outer piston side wall, and an internal orifice connecting the internal hydraulic passage and the internal chamber; a catch piston slidably disposed in the outer piston; and a cone-shaped extension extending from the inner piston, wherein the cone-shaped extension is adapted to provide a variable flow area through the outer piston orifice to provide improved engine valve seating.