CIE 071 Class
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 Iarnród Éireann No. 081 in new freight livery, March 2007 |
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| Power type | Diesel-electric |
|---|---|
| Builder | General Motors Electro-Motive Division (EMD), London, Ontario, Canada |
| Order number | 713736–713753 (CIÉ 071-088) 798072 (NIR 111/112) 838084 (NIR 113) |
| Serial number | 713736–713753 (CIÉ 071-088) 798072-1, 798072-2 (NIR 111/112) 838084-1 (NIR 113) |
| Model | JT22CW |
| Build date | July 1976 (CIÉ 071-088) October 1980 (NIR 111/112) December 1984 (NIR 113) |
| Total production | 21 |
| AAR wheel arr. | C-C |
| UIC classification | Co'Co' |
| Gauge | 1,600 mm (5 ft 3 in) |
| Length | 17.37 m (57 ft 0 in) |
| Locomotive weight | 100.6 tonnes (99.0 LT/110.9 ST) |
| Prime mover | EMD 12-645E3C |
| Engine type | 2-stroke diesel |
| Aspiration | Mechanically-assisted turbocharger |
| Displacement | 126.8 litres (7,740 cu in) |
| Generator | AR10D3 |
| Traction motors | D77, 6 off |
| Cylinders | V12 |
| Cylinder size | 230 mm × 254 mm (91⁄16in × 10 in) |
| Top speed | 145 km/h (90 mph) |
| Power output | 2,250 hp (1,680 kW) |
| Tractive effort | 289 kN (65,000 lbf) maximum 192 kN (43,000 lbf) at 24.3 km/h (15.1 mph) continuous |
| Locomotive brakes | Straight air |
| Train brakes | 27-LAV air |
| Locale | Ireland |
The Córas Iopmair Éireann 071 Class is a General Motors Electro-Motive Division EMD JT22CW series diesel-electric locomotive used in Ireland. Serbia utilises four similar locomotives.
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[edit] Ireland
The Córas Iompair Éireann 071 Class, and the identical Northern Ireland Railways 111 Class, locomotives were the principal passenger locomotives on the Irish railway network for twenty years from their introduction in the late 1970s. They displaced the older CIÉ 001 Class and NIR 101 Class locomotives and were themselves replaced in turn by the new 201 Class locomotives.
Currently all the CIÉ locomotives remain in service, but on second-tier passenger duties. NIR 112 was on long term loan to Irish Rail from April 2003 until September 2006 but has been out of service since December 2006 due to problems with its main generator. [1] 111 and 113 (now renumbered 8113) see sporadic use, either on the morning Portadown to Belfast Central passenger service or on shunting or permanent way duties. In 2007, it was announced that NIR's three locomotives were to be converted to push-pull operation.[1]
As of late 2006, CIÉ began an overhaul programme of 12 units only, leaving the fate of their remaining 6 units in doubt. To date eight 071s have received the new 'Freight Livery’; they are Nos. 071, 073, 075, 080, 081, 082, 085 and 086.
[edit] Additional technical details
- Model Type EMD JT22CW
- Auxiliary Alternator: D14
- Auxiliary Generator: A-8147M1, 18 kW
- Power at rail: 1,300 kW
- Storage Battery: MS280, 32 cells, 280 ampere-hours (Ah), later increased to 420 Ah for improved engine starting
- Bogies: Flexicoil
- Wheel Diameter : 101.6cm (40-inch)
- Compressor / Exhauster: Model ABOV
- Height over horn: 4.04 m (13 ft 33⁄16 in)
- Width: 2.89 m (9 ft 57⁄8 in)
- Fuel Tank: 3,600 L (800 imp. gal )
- Min Turning Radius: 50 m (164 ft)
- Multiple working : To AAR, with all IÉ & NIR GM locos
- Nos. 111 and 112 were modified by NIR to provide head end power to coaching stock in the early 1990s, however this capability was seldom used and is now isolated
Turbo-Supercharger
This locomotive is fitted with a two stage Turbocharger. At low engine speeds there is insufficient energy in the exhaust gases to drive the turbo which instead is driven via a shaft from the engine. Above 600 rpm, the shaft drive is disengaged by means of a torque operated clutch and the turbo is driven solely by the exhaust gases, this prevents the power required to drive the turbo being absorbed directly from the engine.
Purge Control
Purge Control prevents possible damage to the engine during start-up. The two starter motors initially rotate the engine at slow speed allowing any water within the engine cylinders, which could cause a hydraulic lock, to be expelled. If the Starter motors fail to start the locomotive after 20 seconds, then the motors MUST be left to cool off for 2 minutes before trying to start the engine again
[edit] Locomotive names
All three NIR locomotives are named after former railway companies. Only one of the IE locomotives is named. Details are as follows:
| No. | Name |
|---|---|
| 082 | Cumann Na nInnealtoiri / The Institution Of Engineers Of Ireland |
| 111 | Great Northern |
| 112 | Northern Counties |
| 113 | Belfast & County Down |
[edit] Model
The 071 Class is currently available as a 00 gauge Resin kit by Model Irish Railways (MIR). It includes transfers, brass detailing (railings, fans, grills) and flush glazing. Note that the paint included is the Golden Brown hue and not the existing deep orange (RAL2011) .[2].
[edit] Serbia
Four similar locomotives (slightly modified and designated EMD JT22CW-2) are used by Serbian Railways, designated as ŽS series 666. They were originally intended for use with Tito's special blue train, hence their all blue livery. These locomotives differ from the Irish units in being standard gauge rather than 1600mm gauge.[3][4]
[edit] References
[edit] External links
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