All Locomotive Engines

Prime movers built to power rail locomotives, chiefly the diesel engines used in diesel and diesel-electric locomotives, considered here as a powerplant distinct from the locomotive class it powers. Belongs here: named locomotive diesel engine families and models. Does not belong here: the locomotive classes themselves, which are grouped under the vehicle type's own diesel and electric locomotives subcategory, or steam locomotives' boilers, which this atlas does not track as separate engine entities.