ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,652, issued on Oct. 7, was assigned to DENSO Corp. (Kariya, Japan).
"Exhaust gas purification control device" was invented by Tomohiro Ueno (Kariya, Japan) and Eiji Takemoto (Kariya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The exhaust gas purification controller is applied to a system with a catalyst and a supply valve for urea water. The exhaust gas purification controller performs an abnormality diagnosis of the supply valve, and includes a urea water filling portion, a valve opening command portion and an abnormality determiner. The urea water filling portion drives the pump at a start of operation of the exhaust gas purification syst...