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:
Aug. 04, 2026
Filed:
May. 20, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Alan G. Holmes, Clarkston, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A valve system includes a valve member disposed in a cylinder of a two-stroke engine, the valve member disposed between a piston and a sidewall of the cylinder, the cylinder including a combustion chamber and a fluid port formed in the sidewall, the piston configured to move within the cylinder along the cylinder axis during a power cycle between a first position and a second position. The valve member is moveable along the cylinder axis, and the valve member is configured to be moved between an open position and a closed position, wherein the valve member covers the fluid port in the closed position. The valve system also includes an actuator configured to move the valve member in coordination with movement of the piston during a power cycle, so that the valve member is in the closed position as the piston traverses the fluid port.