CIE 071 Class

CIE 071 Class

Infobox Locomotive
name=Córas Iopmpair Éireann 071 class
Northern Ireland Railways 111 class
powertype=Diesel-electric
gauge=RailGauge|1600|lk=on


caption=Iarnród Éireann No. 081 in new freight livery, March 2007
builder=General Motors Electro-Motive Division (EMD), London, Ontario, Canada
buildmodel=JT22CW
aarwheels=C-C
uicclass=Co'Co'
cylindercount=V12
primemover=EMD 12-645E3C
builddate=July 1976 (CIÉ 071-088)
October 1980 (NIR 111/112)
December 1984 (NIR 113)
ordernumber=713736–713753 (CIÉ 071-088)
798072 (NIR 111/112)
838084 (NIR 113)
serialnumber= 713736–713753 (CIÉ 071-088)
798072-1, 798072-2 (NIR 111/112)
838084-1 (NIR 113)
totalproduction=21
locale=Ireland
poweroutput=convert|2250|hp|abbr=on
topspeed= convert|145|km/h|abbr=on
weight=convert|100.6|t
tractiveeffort=convert|289|kN|lbf|abbr=on maximum
convert|192|kN|lbf|abbr=on at convert|24.3|km/h|abbr=on continuous
length=convert|17.37|m|ftin|abbr=on
enginetype=2-stroke diesel
aspiration=Mechanically-assisted turbocharger
cylindersize=230 mm × 254 mm (9Fraction|1|16in × 10 in)
displacement=convert|126.8|l|cuin
generator=AR10D3
tractionmotors=D77, 6 off
locobrakes=Straight air
trainbrakes=27-LAV air

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.

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 are used on freight and permanent way trains, with occasional appearances on second-tier passenger duties. NIR 112 was on long term loan to Irish Rail from April 2003 until September 2006 but has since returned to Northern Ireland Railways. 111, 112 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. [ [http://www.irrs.ie/Journal%20164/164%20News%20NIR.htm IRRS 164] ]

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 nine 071s have received the new 'Freight Livery’; they are Nos. 071, 073, 075, 079, 080, 081, 082, 085 and 086.

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 3Fraction|3|16 in)
* Width: 2.89 m (9 ft 5Fraction|7|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

Locomotive names

All three NIR locomotives are named after former railway companies. Only one of the IE locomotives is named. Details are as follows:

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) . [http://website.lineone.net/~sjohnson40/Loco%20Profiles/071%20Class.html] .

erbia

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. [http://www.railfan-belgrade.org/dizel.htm] [http://www.railfaneurope.net/pix/sp/diesel/666/pix.html]

References

External links

* [http://groups.msn.com/IrishRailwayTechnologyandinformation/_whatsnew.msnw Irish Railway Technology and Information -reporting on all aspects of irish railways]


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