This is the GEVO-16 diesel engine, originally made by Gesh, uploaded to the DLS by Trainmaster189.
Thank you Gesh for your permission to upload this awesome GE sound to the DLS!
General Electric's more powerful version of the GEVO 12 engine. Using 16 cylinders, the engine by itself develops 6,000HP easily and makes 188,000 lbf of torque or 840kN. A few railways use these locomotives and one of the bigger ones is CSX. They use this prime mover except it's downgraded to 4,600hp.