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The reference for locomotives and railcars

China Railway DF8

Dōngfēng 8

China 1984 1367 produced
DF8B No. 5620 N509FZ / Prior to the Silent Night CC BY-SA 4.0

The DF8 is a heavy diesel locomotive for freight service, both prototypes of which were built in 1984. Series production of the actual DF8 followed in 1989. It had a sixteen-cylinder engine with an output of 3,310 kW or 4,500 hp. The same engine is also used in the DF9 and DF11 passenger locomotives. Power output was increased over the years, so that the more than 1,200 DF8Bs already had 3,680 kW or 5,000 hp. There were also experimental locomotives, such as the DF8BJ with three-phase traction motors and the DF8DJ with a 4,800 kW or 6,525 hp Caterpillar engine. The DF8 was also successful in exports, with customers found in Asia, Africa and South America.

Technical data

General

Property DF8 DF8B DF8D DF8DJ
Built 1984-1997 seit 1997 2003, 2008 2009
Manufacturers Qishuyan, Dalian, Ziyang, CRRC
Wheel arrangement C-C
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property DF8 DF8B DF8D DF8DJ
Length 22.00 m
Service mass 142.4 t
Adhesion mass 142.4 t
Rigid wheelbase 3.60 m
Axle load 23.7 t

Power plant

Property DF8 DF8B DF8D DF8DJ
Engine 16V280ZJ 16V280ZJA 12V280/320ZJ Caterpillar 3616
Engine type V16 diesel V12 diesel V16 diesel

Power

Property DF8 DF8B DF8D DF8DJ
Power source diesel-electric
Indicated power 3,310 kW (4,500 PS) 3,680 kW (5,003 PS) 3,820 kW (5,194 PS) 4,800 kW (6,526 PS)
Top speed 100 km/h 120 km/h
Starting effort 441.0 kN 481.0 kN 560.0 kN

Calculated values

Property DF8 DF8B DF8D DF8DJ
Factor of adhesion 1 : 3.17 1 : 2.90 1 : 2.49
Power-to-weight ratio 23.2 kW/t 25.8 kW/t 26.8 kW/t 33.7 kW/t
Adhesive weight/Total 1 : 1.00
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