ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,398, issued on Feb. 17, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Method to perform rebreathe mode transitions" was invented by Christopher E. Whitney (Commerce, Mich.), Ashish Shah (Canton, Mich.), Mark Sellnau (Houston), Dustin Sharp (Houston) and Praveen Kumar (New Hudson, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An engine includes pistons, a crankshaft, cylinders, an intake manifold, an exhaust manifold, intake valves, exhaust valves, a fuel rail, and an Electronic Control Unit (ECU). The ECU coordinates operations of the intake valves, the exhaust valves, and the fuel injectors based upon a position of the ...