TCDD DE24000

TCDD DE 24000 (stylised as DE 24 000 in painted registration numbers) is a type of diesel locomotive built for operations on Turkish State Railways (TCDD) by Tülomsaş. 218 units were built between 1970 and 1984 under license from Matériel de Traction Electrique (MTE) of France. The DE 24000 formed the backbone of the dieselisation of the Turkish railways during the 1970s. It follows the hood unit road switcher design, like most Turkish mainline locomotives. DE 24 000 is the most commonly found locomotive class in Turkey (431 units produced, more than 100 in usable state).

DE 24000
Two DE24000 locomotives pulling a westbound regional train.
Type and origin
Power typeDiesel-electric
DesignerMatériel de Traction Electrique, modified vastly
BuilderMatériel de Traction Electrique (first units)
Tülomsaş (all remaining)
Model1968
Build date1970–1985
Total produced431
Specifications
Configuration:
​
 • AARC-C
 • UICCo'Co'
Gauge1,435 mm (4 ft 8+1⁄2 in)
Bogies2
Wheel diameter1,100 mm (43 in)
Length22.67 metres (74.4 ft)
Loco weight113 tonnes (111 long tons; 125 short tons)
Fuel capacity4,960 litres (1,090 imp gal; 1,310 US gal)
Prime moverPielstick 16PA4V185(most units)
Hedemora Diesel V16(some units)
RPM range679-1599 ​
 • RPM low idle620
 • RPM idle650
 • Maximum RPM1680
Engine typeDiesel V16
AspirationTurbocharged
Alternator72V
Generator600VAC
Traction motorsDC traction motors ​
 • Rating 1 hour1200 (automatically governed)
 • Continuous1200 (automatically governed)
CylindersV16
TransmissionAC-DC
Gear ratio16⁄87 at traction motors
MU workingyes (with identical units) since 2017 revisions
Loco brakeAir brake
Train brakesAir brake
Safety systemsemergency brake, gas-generator notching decoupler, dead man's switch
Performance figures
Maximum speed120 km/h (75 mph) (designation)
144 km/h (89 mph) (overspeed with blue and accelerated trains-this practice prohibited)
Power output:
​
 • Starting1,760.0 kW (2,360.2 hp) (original rating with Pielstick engines)
1,610.0 kW (2,159.0 hp) (re-rating and all units with Hedemora engines)
 • 1 hourno restriction
 • Continuous2,200.0 hp (1,640.5 kW) (road use)
1,860.0 hp (1,387.0 kW) (switching duties)
Tractive effort:
​
 • Starting394 kilonewtons (89,000 lbf)
 • Continuous357 kilonewtons (80,000 lbf) @ 16 kilometres per hour (9.9 mph)
Career
OperatorsTurkish State Railways(36 units)
İZBAN(6 units)
TCDD Taşımacılık (remaining)
NumbersDE24001 – DE24418
Nicknames"Mavi lokomotif" (blue locomotive-ones with blue livery)
Yirmidörtbinlik (24000ths)
LocaleTurkey

In addition to MTE, diesel parts were supplied by Chantiers de l'Atlantique, electric parts from Jeumont-Schneider, and mechanical parts from Forges et Ateliers du Creusot, all of which later acquired by Alstom.

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