SDD9 Diesel Locomotive

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SDD9 diesel locomotive is developed and manufactured for Madagascar as passenger, freight and shunting locomotive. It is equipped with MTU 12V4000R41R diesel engine with maximum service power 1250kW. Main AC-DC transmission is employed with DC and AC transmission for auxiliary system. Two bogies with two axles for each and double pull rods for axle box are used. The mechanism of four low-position tractive rods is utilized for transmission of tractive and braking efforts. The car body is of load bearing centre beam and outside corridor. The braking system is equipped with double-purpose brake of air and vacuum. It is capable of multiple units in consist.

Basic locomotive parameters:
1. Purpose: passenger, freight and shunting locomotive
2. Gage: 1000mm
3. Transmission mode: AC-DC transmission
4. Axle arrangement: Bo-Bo
5. Wheel diameter: 914mm
6. Axle load: 18×(1±3%)t
7. Calculating locomotive weight with full service: 72×(1±3%)t
8. Maximum service power of the engine: 1250kW
9. Locomotive speed (calculated at half worn driving wheel as 880mm):
Maximum running speed: 80km /h
Continuous speed: 22.4km/h
10. Locomotive tractive effort at wheel rim (calculated at half worn driving wheel as 880mm):
Starting tractive effort: 237kN (starting current limit)/ 254kN (adhesion limit)
Continuous tractive effort: 143kN
11. Minimum curvature radius negotiated: 80m
12. Fuel tank capacity: 3200L
13. Oil volume: 260L
14. Water volume: 500kg
15. Sand volume: 300kg
16. Center line of coupler above rail head: 750mm±10mm
17. Locomotive length: 15500mm

Model	SDD9
Purpose	passenger, freight and shunting locomotive
Gage	1000mm
Locomotive clearance	UIC 506-GC
Transmission mode	AC-DC transmission
Axle arrangement	Bo-Bo
Wheel diameter	914mm
Axle load	18×(1±3%) t
Calculating locomotive weight with full service	72×(1±3%)t
Maximum service power of the engine	1250kW
Maximum running speed (half worn driving wheel)	80km /h
Continuous speed	22.4km/h
Maximum starting tractive effort	237kN (starting current limit)/ 254kN (adhesion limit)
Continuous tractive effort	143kN
Minimum curvature radius negotiated	80m
Fuel tank capacity	3200L
Oil volume	260L
Water volume	500kg
Sand volume	300kg
Center line of coupler above rail head	750mm±10mm
Locomotive length	15500mm