I think it is licensed/IP rights owned/ know-how transferred doosan v12 engine, which is identical to the MTU, we can assume koreans either copied it or purchased IP rights from MTU.If this is the BATU engine, I think it is reverse engineered from MTU. But it would be better than developing a new engine, and good answer to those embargo loving so called allies
They used to produce it under license as well, if i am not wrong.