ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,710, issued on Sept. 29, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Systems and methods for migitating cold start emissions by managing turbocharger turbine speed" was invented by Mark Claywell (Birmingham, Mich.), Azeem Sarwar (Rochester Hills, Mich.), Maqsood Rizwan Ali Khan (Troy, Mich.) and Lei Wang (Rochester Hills, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control signal is issued to a turbo shaft actuator to rotate a turbine at a first turbine speed in response to an ignition turn on signal. The first turbine speed is different from a default turbine speed. The rotation of the turbine at the default turbine ...