US Patent Issued to GM Global Technology Operations on Sept. 15 for "Nitrogen oxides warm up control" (Canadian, American Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,734,480, issued on Sept. 15, was assigned to GM Global Technology Operations LLC (Detroit).

"Nitrogen oxides warm up control" was invented by Rahul Mital (Rochester Hills, Mich.), Usman Asad (LaSalle, Canada) and Layne Lavern Wagner (Clarkston, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vehicle includes an engine and an aftertreatment system. The aftertreatment system includes a passive nitrogen oxides adsorber (PNA) that stores nitrogen oxides (NOx) below a first release temperature and oxidizes hydrocarbons (HC) and carbon monoxide (CO) above a first light-off temperature an electric heater (EHC), and a selective catalytic reduction (SCR)...