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Chinese Rail DF4B facts for kids

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DF4B locomotives
Power type Diesel-electric
Build date 1984 - 2012
AAR wheel arr. Co-Co
Gauge 1,435 mm (4 ft 8 12 in)
Length 21,100 mm (69 ft 3 in)
Width 3,309 mm (10 ft 10.3 in)
Height 4,500 mm (14 ft 9 in)
Locomotive weight 138 tonnes
Prime mover 16V240ZJB
Transmission electric (AC-DC)
Top speed Passenger:120 km/h (75 mph)
Freight:100 km/h (62 mph)
Power output 2,650 kW (3,550 hp)
Tractive effort Passenger: 327.500 kN (73,625 lbf) starting,
243.000 kN (54,629 lbf) continuous
Freight: 435.000 kN (97,792 lbf) starting,
324.000 kN (72,838 lbf) continuous
Career China Railways
Locale People's Republic of China

The DF4B (Chinese: 东风4B) is a kind of diesel locomotive used in China. It was built by Dalian Locomotive & Rolling Stock Works.It has been in production since 1984 and is still produced as of 2012.It is the most common locomotive in China and is used for both passenger and freight services.


DF4B is called "Armed Police" or "Watermelon" (freight version), and "Orange" (passenger version).



DF4B have been manufactured by several companies:

  • Dalian Locomotive & Rolling Stock Works(1001~1999;2101~2685;7001~7793)
  • CSR Sifang Locomotive and Rolling Stock Co., Ltd.(7701~7732, former DF4E)
  • CSR Ziyang Locomotive Works(3101~3999;9001~9597)
  • Datong locomotive factory(6001~6587)
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Chinese Rail DF4B Facts for Kids. Kiddle Encyclopedia.