SDD17 diesel locomotive is a kind of mainline passenger and freight locomotive developed and manufactured for Saudi national railway. The axle load is 25t. It equipped with 12V280ZJ diesel engine, diesel engine electronic injection system, AC auxiliary electric transmission system, AC-DC main transmission. It has the function of resistance brake and self load. The auxiliary transmission of locomotive is divided into AC and DC. The locomotive has one drivers cab, with outside corridor, cover and load-bearing body. It adopts double three-axle bogie, the axle arrangement is Co-Co. Each axle is driving axle with traction motor, arranged contraposition inside. It adopts air braking system of 26L, with the function of double heading in consist.
SDD17 diesel locomotive is developed and manufactured mainly under the consideration of the running environment, climate condition and customers’ special requirements of railway in Saudi. To treat the locomotive running reliability as the center, and given consideration to the advancement of locomotive. To ensure reliable running and safety of the diesel engine and electric control device, it adopts a series of protection measures on design. On locomotive electric control, it has protection measures for main alternator overcurrent, braking resistance overcurrent, resistance braking device damage, main circuit grounding. It adopts complete microcomputer logic control technology, ETCS and GSR used for mobile communication.
Main technology parameters
Locomotive type:SDD17 Electric transmission diesel locomotive
Purpose:Mainline freight locomotive
Running area:Saudi National Railway
Running conditions:
Maximum temperature in the hottest month:55℃
Minimum temperature in the coldest month:0℃
Relative humidity:70%-90%，hottest 98%
Environment characteristic:Sand, dry, hot, desert, heavy rain
Braking requirements:Meet the requirements of traction air braking or dynamic braking
Requirements of double heading in consist:locomotive shall meet the requirements of double heading in consist
Gauge:1435mm
Locomotive clearance limit:Meet the locomotive clearance limit in Saudi
Transmission mode:AC-DC transmission
Axle arrangement:Co-Co
Wheel diameter:1050mm
Axle load:25t
Locomotive weight with full service:150 t
Nominal power:2070kW
Maximum running power of diesel engine:2760kW
Locomotive speed(the diameter of driving wheel is calculated as 1016mm)
a) Maximum running speed:100km/h
b) Continuous speed:19.7km/h
Locomotive tractive effort at the wheel rim:
a) Maximum starting tractive effort:556 kN
b）Continuous tractive effort:369.1kN
Minimum curvature radius negotiated:100m(the running speed of light locomotive is less than 5km/h)
Wheelbase:
a）Wheelbase:1800mm
b）Total wheelbase of bogie:3600mm
c）Total wheelbase of locomotive:15640mm
Locomotive configuration:
a）Length:21620mm
b）Width:3250mm
c）Height:5380mm
Fuel tank capacity:10000L
Total lubrication oil volume:1200L
Total water volume:1580kg
Total sand volume:400kg
Center line of coupler above rail top:889
mm
