US Patent Issued to PACCAR on July 15 for "NO x sensor diagnostics in heavy-duty motor vehicle engines" (Washington Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,598, issued on July 15, was assigned to PACCAR Inc (Bellevue, Wash.).

"NO x sensor diagnostics in heavy-duty motor vehicle engines" was invented by Cynthia Chaffin Webb (Sedro-Woolley, Wash.), Charles Wayne Reinhardt Swart (Bellingham, Wash.), Maarten Meijer (Anacortes, Wash.) and Varun Ramesh (Bellingham, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heavy-duty truck has a diesel engine, an exhaust after-treatment system, and an engine control unit. The exhaust after-treatment system includes a close-coupled selective catalytic reduction system and an underbody selective catalytic reduction system, a first NOx sensor upstream of the close-...