Between 2006 and 2007 Siemens built 16 narrow gauge (1000 mm) locomotives for the Vietnamese Railways (VNR), which the Asian operator ordered in 2004. Siemens calls this product the AsiaRunner. The locos built for VNR have a Co'Co'-de axle configuration, which gives them their low axle loads. These low axle loads are needed to run safely on the available infrastructure, which oftenly is of poor quality.
The AsiaRunner as a product is related to the EuroRunner, but is designed for services in Southeast Asia and Africa on narrow gauge railway lines. Siemens offers two subtypes: the AR15 and the AR20. The locos built for Vietnam represent the AR15 subtype and have a power output of 1500 kW. AR20 locomotives are stronger with their power output of 2000 kW and heavier. However, no AR20 locos have been built up till now (04.2013), which makes the VNR D20E series the sole representive of the AsiaRunner locomotive type.
Later, Siemens offered a stronger version as replacement of the AR20 concept: the AR24. Instead of 2000 kW engine, this locomotive would feature a 2400 kW engine. However, no examples of the AR24 type have actually been built.
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Technical Details
| AR15 | AR24 (concept) | |
| Dimensions | ||
| Total length | 19180 mm | 19180 mm |
| Total height | 3945 mm | 3945 mm |
| Total width | 2820 mm | 2820 mm |
| Axle characteristics | ||
| Wheel diameter new | 1016 mm | 1016 mm |
| Wheel diameter worn | 956 mm | 956 mm |
| Axle arrangement | Co'Co' | Co'Co' |
| Track gauge | 1000 - 1067 mm | 1000 - 1067 mm |
| Weight | ||
| Total weight (maximum) | 81 tonnes | 96 tonnes |
| Axle load (maximum) | 13,5 tonnes | 16 tonnes |
| Traction performance | ||
| Top speed | 120 km/h | 120 km/h |
| Starting tractive effort | 260 kN | 300 kN |
| Continuous tractive effort | 250 kN | 250 kN |
| Maximum braking effort | 150 kN | 150 kN |
| Propulsion characteristics | ||
| Fuel tank capacity | 4500 L | 4500 L |
| Diesel engine manufacturer | MTU | MTU |
| Diesel engine type | 12V 4000 R41 | ? |
| Power rating | 1500 kW | 2400 kW |
| Number of cylinders | 12 | 16 |
| Rated speed | 1800 rpm | 1800 rpm |
| Idle speed | 600 rpm | 600 rpm |
| Number of traction motors | 6 | 6 |
| Manufacturer electrical equipment | Siemens | Siemens |
| Electrical transmission | AC | AC |
Fleet List
| Hersteller | Fabriknummer | Baujahr | Fahrzeugtyp | Bauart | Loknummer | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Siemens | 21184 | 2006 | AR 15 | Co'Co'-de | VNR | D20E-001 |
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| Siemens | 21185 | 2006 | AR 15 | Co'Co'-de | VNR | D20E-002 |
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| Siemens | 21186 | 2006 | AR 15 | Co'Co'-de | VNR | D20E-003 |
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| Siemens | 21187 | ? | AR 15 | Co'Co'-de | VNR | D20E-004 |
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| Siemens | 21188 | ? | AR 15 | Co'Co'-de | VNR | D20E-005 |
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| Siemens | 21189 | ? | AR 15 | Co'Co'-de | VNR | D20E-006 |
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| Siemens | 21190 | ? | AR 15 | Co'Co'-de | VNR | D20E-007 |
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| Siemens | 21191 | ? | AR 15 | Co'Co'-de | VNR | D20E-008 |
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| Siemens | 21192 | ? | AR 15 | Co'Co'-de | VNR | D20E-009 |
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| Siemens | 21193 | ? | AR 15 | Co'Co'-de | VNR | D20E-010 |
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| Siemens | 21194 | ? | AR 15 | Co'Co'-de | VNR | D20E-011 |
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| Siemens | 21195 | ? | AR 15 | Co'Co'-de | VNR | D20E-012 |
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| Siemens | 21196 | ? | AR 15 | Co'Co'-de | VNR | D20E-013 |
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| Siemens | 21197 | ? | AR 15 | Co'Co'-de | VNR | D20E-014 |
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| Siemens | 21198 | ? | AR 15 | Co'Co'-de | VNR | D20E-015 |
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| Siemens | 21199 | ? | AR 15 | Co'Co'-de | VNR | D20E-016 |
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