US Patent Issued to Caterpillar on April 29 for "System and method for detecting a failed nitrogen oxide sensor" (Illinois Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,920, issued on April 29, was assigned to Caterpillar Inc. (Peoria, Ill.).

"System and method for detecting a failed nitrogen oxide sensor" was invented by Drew D. Wackerlin (Chillicothe, Ill.), Keerthana Prasad (Peoria Heights, Ill.) and Scott A. Wallington (Hopewell, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure is related to detection of a failed NOx sensor, which is crucial for modern combustion engine aftertreatment control, but its failure can cause false diagnostics, reduced engine performance, and lengthy troubleshooting. Accordingly, a system and method for detecting a NOx sensor in an engine through a NOx functio...