The China Railways DFH1 was a type of 4-axle B'B' single-cab diesel-hydraulic locomotive used on mainline passenger services; the DFH3 was a later development of a similar design but with two driving cabs.

The China Railways DFH4 was a 6-axle high-powered freight and passenger locomotive, it did not reach mass production.

China Railways DFH1

Prototype NY1 Weixing

The first prototype unit (NY1) (neiran yeli chuandong meaning diesel-hydraulic transmission)[4] was produced in 1959 at Sifang locomotive works, and given the name 'Weixing'.

Locomotive design was similar to German diesel-hydraulic machines such as the DB Class V 200 - the machine had a pair of high-speed diesel engines, each driving a separate hydraulic torque converter based transmission resulting in low mass compared to contemporary diesel-electric machines.

DFH1-4245 (Beijing Main Station)

Series production began in 1964. The locomotive was used for passenger trains.[1] The locomotives could be worked in multiple, and were often used in this way, with a cab at each end. They operated on the Beijing Shenyang passenger trains.[5]

China Railways DFH3

내연923, ex-China Railways DFH3 in service in North Korea.

The DFH3 shares the same twin engine and twin hydraulic transmission as the DFH1 but is a two-cab design.

The production of the DFH3 follows on from the DFH1. The class were used on passenger trains in northeast China, by 2010 most had been displaced, and some are believed to being used in industrial service.[6]

North Korea

A DFH3 in standard Kukch'ŏl livery at Namyang Station on the Hambuk Line.

Between 2000 and 2002, thirty second-hand DFH3 were imported by the Korean State Railway for operation in North Korea,[7] numbered 내연901 to 내연930.[8] Many are still in their original Chinese livery of blue and white, but some have been repainted into several different liveries, including the standard North Korean light blue over dark green, along with non-standard schemes of white over green, green with a yellow stripe, and green with a white stripe.

China Railways DFH4

The Qishuyan Ziyang Diesel locomotive works manufactured six locomotives of type DFH4 between 1969 and 1981. The first unit was produced in 1969 with an overall 5,000 hp (3,700 kW) machine with twin engine and hydraulic transmission.[1] Two 4,500 hp (3,400 kW) machines were produced in 1971 and 1974. Between 1975 and 1981 the Ziyang plant investigated the manufacture of further locomotives using the 12V200ZJ engine.[2]

See also


One unit, locomotive number DFH1 4290 is an exhibit at the Beijing China Railway Museum, all other units have been destroyed[9] except DFH1 4222 which is believed to be at the locomotive museum in Shenyang.[10] The Beijing museum also stores DFH3 0009.[10]


  1. ^ a b c d e f g h i j k l m n 东方红型内燃机车 , DFH Diesel locomotives , kepu.net.cn
  2. ^ a b c d e 东方红4型(DFH4)内燃机车 , Donfang Hong (DFH4) Diesel locomotive , www.fjsen.com
  3. ^ 新闻资料:东方红型内燃机车 Archived 2011-07-23 at the Wayback Machine. , DFH locomotive , news.workercn.cn
  4. ^ ND and NY prefixes , www.railwaysofchina.com
  5. ^ DFH1 Class B'-B' Diesel-Hydraulics , www.railography.co.uk
  6. ^ DFH3 Class B'-B' Diesel-Hydraulics , www.railography.co.uk
  7. ^ 朝鲜铁路机车车辆概况一览
  8. ^ Kokubu, Hayato, 将軍様の鉄道 (Shōgun-sama no Tetsudō), ISBN 978-4-10-303731-6
  9. ^ 东方红1型机车安家铁博 Archived 2013-04-07 at Archive.is (information on the preservation of DFH1 4290) , www.tieliu.com.cn
  10. ^ a b Preserved Locomotives , www.railwaysofchina.com