SDD17 Diesel Locomotive

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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:889mm

Model	SDD17
Running area	Saudi National Railway
Purpose	Mainline freight locomotive
Maximum temperature during Running conditions	55℃
Minimum temperature during running conditions	0℃
Relative humidity during running conditions	70%-90%,hottest 98%
Environment characteristic	Sand, dry, hot, desert, heavy rain
Locomotive clearance limit	Meet the locomotive clearance limit in Saudi
Transmission mode	AC-DC transmission
Axle load	25t
Gauge	1435mm
Axle arrangement	Co-Co
Wheel diameter	1050mm
Calculating locomotive weight with full service	150 t
Nominal power:	2070kW
Maximum running power of diesel engine	2760kW
Maximum running speed(half worn driving wheel)	100km/h
Continuous speed	19.7km/h
Maximum starting tractive effort	556 kN
Continuous tractive effort	369.1kN
Minimum curvature radius negotiated	145m(light locomotive, speed is less than 5km/h)
Center line of coupler above rail top	889 mm
Wheelbase	1800mm
Total wheelbase of bogie	3600 mm
Total wheelbase of locomotive	15640mm
Locomotive configuration size (L×W×H)	21620x3250x5380mm
Fuel tank capacity	10000L
Total lubrication volume	1200L
Total Water volume	1580kg
Total Sand volume	400kg