US Patent Issued to Caterpillar on June 17 for "Injection control valve in fuel injector configured for pressure relief" (Illinois Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,708, issued on June 17, was assigned to Caterpillar Inc. (Peoria, Ill.).

"Injection control valve in fuel injector configured for pressure relief" was invented by Jeffrey E. Ledford (Chenoa, Ill.), Mitchell Juchems (Eureka, Ill.) and Andrew O. Marrack (Peoria Heights, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel injector includes a nozzle, and a nozzle check including a closing hydraulic surface. The fuel injector also includes a high pressure passage, a low pressure drain, a control passage, a check control chamber, and a valve seat. A relief passage is formed by at least one of an injector housing or a control valve in a control valv...