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:
Jan. 18, 2011
Filed:
Apr. 24, 2008
Ian Methley, Witney, GB;
Ian Methley, Witney, GB;
Mechadyne PLC, Kirtlington, GB;
Abstract
A valve system is disclosed for an internal combustion engine which allows a secondary valve event, serving for example to provide internal EGR, to be selectively disabled. The system comprises two valveand, a first camacting on the first valveby way of a rockerpivotable about a fixed pivot axis and a second camhaving at least two lobes and acting on the second valveby way of a second rockerpivotable about an eccentric. The second of the two lobes of the second camis arranged to open the second valveat a time that the first valveis opened by the first cam. A selectively operable latching mechanismlatches the eccentricin a fixed position in which each of the cam lobes of the second cam causes the second valve to open. When the latching mechanismis released, a coupling between the eccentricand the first rockercauses or permits the eccentricto move during the opening of the first valvein a sense to oppose the lifting of the second valveby the second lobe of the second cam.