Dongfeng 4B diesel locomotive (DF4B) is the use of a Chinese railway lines for passenger and freight locomotive, by Dalian locomotive factory in 1982 in Dongfeng 4 type diesel locomotive based on the successful development, not only makes the locomotive reliability and durability is greatly improved, but also reduces fuel consumption. Dongfeng 4B locomotive to start mass production in 1984, in addition to Dalian locomotive factory, Ziyang diesel locomotive factory, Datong Locomotive Factory and Sifang locomotive factory has production of Dongfeng 4B locomotive, the cumulative production reached 4591 units, Chinese, all around the Railway Bureau, as Chinese railway history of the largest output, the most widely used and most mature technology of diesel locomotive models.
