ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,548, issued on May 20, was assigned to CUMMINS INC. (Columbus, Ind.).
"Systems and methods for catalyst sensor diagnostics" was invented by Avra Brahma (Fishers, Ind.) and Vivek Bithar (Columbus, Ind.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and an apparatus including a processing circuit structured to: receive a first signal indicative of an upstream air-fuel equivalence ratio from a first sensor positioned upstream of an intake of a catalyst, the first signal defining a duty cycle, receive a second signal indicative of a downstream air-fuel equivalence ratio from a second sensor positioned downstream of the intake of the catalyst, a...