ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,200, issued on Aug. 25, was assigned to Caterpillar SARL (Geneva).

"Hydraulic control system and setting method and calibration method of target engine torque during relief in hydraulic control system" was invented by Hideki Nakajima (Akashi, Japan) and Toshikazu Koga (Akashi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "PROBLEM: To enable accurately controlling and managing by means of software, a relief pressure of a pump oil passage supplied with a discharge oil of a hydraulic pump. SOLUTION: There are provided a target engine torque setting/calibration unit (19) during relief configured to detect an engine torque in a state where a pump ...