ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,498, issued on Sept. 16, was assigned to KOREA AEROSPACE RESEARCH INSTITUTE (Daejeon, South Korea).

"Hybrid engine system and method of controlling the same" was invented by Chun Taek Kim (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hybrid engine system includes: an engine; a generator driven by the engine to output electrical energy; a battery configured to store electrical energy produced by the generator or supply electrical energy together with the generator; and a controller configured to control the engine, wherein the controller includes a torque meter for measuring torque of an output shaft of the engine and a curr...