DF8BI High-Power Freight Diesel Locomotive

 

DF8BI diesel locomotive is developed and manufactured for Iran national railway as a dual-purpose passenger and freight locomotive. It is equipped with 16V280ZJA diesel engine, JF204D synchronous main alternator and ZD109E traction motor. UIC standard operator cab and load-bearing fuel tank are employed. Three-axle bogie with rolling bearing U-tube and 23-ton axle load is designed as the running gear. This locomotive has double microcomputer control system and dynamic braking equipment. It has full-power self-loading and double-heading functions. The JZ-7 air braking is adopted for the locomotive air braking system. The locomotive is equipped with automatic couplers in accordance with Willison profile and the installation position of buffer is reserved. The top air-intake structure is employed and air filter system under UIC clearance is optimized to prevent wind and sand. Measures to minimize weight from the GE design concept are understood and absorbed. The capability for the locomotive to negotiate a curve of small radius is improved in the design. It can be allocated as locomotive in consist as well.

 Basic DF8BI Locomotive Parameters

Axle arrangement

Co-Co

Transmission mode

AC-DC transmission

Gage

1435mm

max. service power

3680kW

Wheel base

1800mm

Axle load

23±0.69t

Locomotive weight with full service

138±4.14t

bogie total axle base

3600mm

Maximum operating speed

100km/h

Continuous speed

  B:  28.2km/h

 Maximum starting tractive effort

Calculated at the traction motor: 520kN
adhesion limit: 440kN

Continuous tractive effort

369kN (traction motor capacity)

347kN (adhesion limit)

locomotive total wheel base

15900mm

overall dimention(LxWxH)

22220x2950x4650mm

Minimum curvature radius negotiated

80m

Fuel tank capacity

9000L


 
Wed , 20 Jun 2018