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China Railways DF8

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DF8
东风8
The first generation of DF8 family
Type and origin
Power typeDiesel-electric
ModelDF8B
Build date1997 -
Total produced700+
Specifications
Configuration:
​
 • AARC-C
Gauge1,435 mm (4 ft 8+1⁄2 in)
Length22,000 mm (72 ft 2.1 in)
Width3,304 mm (10 ft 10.08 in)
Height4,736 mm (15 ft 6.46 in)
Prime mover16V280ZJA
Engine typeV16
CylindersV16
Cylinder size280 mm × 285 mm (11.024 in × 11.220 in)
bore x stroke
TransmissionElectric (AC-DC)
Loco brakeStraight air and dynamic
Train brakesAir
Performance figures
Maximum speed100 km/h (62 mph)
Power output3,680 kW (4,930 hp)
Tractive effort480 kN (110,000 lbf) starting
340 kN (76,000 lbf) continuous
Career
OperatorsChina Railways
LocalePeople's Republic of China
DF8B at Fengtai Depot, Beijing

The DF8 (Chinese: 东风8; translation: East Wind) is a type of diesel locomotive used in the People's Republic of China. It was in production from 1984 until the middle of the 1990s, with batch production starting in 1989. The revised DF8B is still in production today. DF8 are almost exclusively used for freight services.

Models

DF8

The first generation DF8 was powered by the original 3,310 kW (4,440 hp) 16V280ZJ engine.

DF8B

The second generation DF8, the DF8B, is powered by an updated 16V280ZJA engine with 3,680 kW (4,930 hp). Production started in 1997 and lasts until today. Qishuyan, Dalian and Ziyang manufacture 0, 3000 and 5000 series of DF8B respectively.

12 DF8Bs were exported to Venezuela and are called DF8Bven, however they are identical to the domestically used DF8B.[1]

Ziyang made a special DF8B which was originally intended to be used on the Qingzang line and was numbered DF8DJ-0001. The special model is powered by a Caterpillar 3616 engine (6,500 hp or 4,800 kW) and six AC traction motors. The Chinese Ministry of Railways rejected the proposal and it was renamed DF8B-5672. It's now running on Xiyan Line in Shaanxi.

DF8BJ

The DF8BJ, which uses the 16V280ZJG engine (4,000 kW or 5,400 hp), GTO VVVF inverter and AC traction motors, is produced by Ziyang.[2] It was designed for Qingzang Railway. Before arrival of GE locomotives for Qingzang, it was named NJ2.

DF8CJ

The DF8CJ version is produced by CSR and has a 16V280ZJB engine (maximum power 4.4 MW or 5,900 hp) and AC inverter traction drive.[3]

DF8DJ

The DF8DJ version has a CAT 3616 engine of rated power 4.8 MW (6,400 hp) and AC asynchronous traction motors. It is the most powerful 6-axle diesel locomotive in the world.[4]

Manufacturers

The original DF8 was manufactured in Qishuyan by CSR Qishuyan Locomotive and Rollingstock Co.,Ltd., the DF8B is also manufactured in Qishuyan by CSR Qishuyan Locomotive and Rollingstock Co.,Ltd. and in Ziyang by CSR Ziyang Locomotive Works.

See also

References

  1. ^ [1]
  2. ^ [2]
  3. ^ 东风8CJ型交流传动重载货运内燃机车 (Dongfeng 8CJ Heavy Freight Diesel Locomotive AC drive) , www.csrgc.com.cn
  4. ^ 东风8DJ型大功率交流传动货运内燃机车 (Dongfeng 8DJ High Power AC Drive Freight Diesel Locomotive) , www.zyloco.com
  • "Ziyang Locomotive Works".
  • "Railways of China".
  • "Railography".


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