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, 2024
Filed:
May. 13, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Anteo Carl Opipari, Saugatuck, MI (US);
Paul Austin, Rockford, MI (US);
Brian Joseph Warner, Hudsonville, MI (US);
Rolando Huerta Ortiz, Grandville, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A cylinder deactivation system for an engine includes an engine block defining a cylinder. A valve opens and closes a port to the cylinder. A rocker arm pivots to operate the valve. A camshaft has a cam lift and a cam-to-rocker input system transfers the cam lift through the rocker arm to the valve. A deactivation assembly is disposed in the rocker arm and is responsive to fluid pressure to alternately effect an activated state of the valve and a deactivated state of the valve.