ČKD T-669 diesel locomotive

Specifications
Configuration:;
• UIC	Co′Co′
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge -; 1,520 mm (4 ft 11 27⁄32 in); 1,676 mm (5 ft 6 in)
Wheel diameter	1,050 mm (41.34 in)
Wheelbase	8,660 mm (28 ft 5 in)
Length	17,240 mm (56 ft 6 3⁄4 in)
Loco weight	115 t; (113 long tons; 127 short tons)
Fuel type	Diesel
Prime mover	ČKD K 6 S 310 DR
RPM range	750
Engine type	Diesel
Cylinders	6
Cylinder size	310 mm × 360 mm; (12.2 in × 14.2 in)
Transmission	DC Electric
MU working	yes

Type and origin
Power type	Diesel-electric
Builder	ČKD
Model	T669.0 770
Build date	1968-1990

T 669; T 669; and others
	T 669 at Durres station, Albania
Type and origin
Power type	Diesel-electric
Builder	ČKD
Model	T669.0 770
Build date	1968-1990
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge -; 1,520 mm (4 ft 11 27⁄32 in); 1,676 mm (5 ft 6 in)
Wheel diameter	1,050 mm (41.34 in)
Wheelbase	8,660 mm (28 ft 5 in)
Length	17,240 mm (56 ft 6 3⁄4 in)
Loco weight	115 t; (113 long tons; 127 short tons)
Fuel type	Diesel
Prime mover	ČKD K 6 S 310 DR
RPM range	750
Engine type	Diesel
Cylinders	6
Cylinder size	310 mm × 360 mm; (12.2 in × 14.2 in)
Transmission	DC Electric
MU working	yes
Performance figures
Maximum speed	90 km/h (56 mph)
Power output	993 kW (1,332 hp)

T-669.0 (770) class diesel locomotives, built by ČKD are six-axle, with two bogies. The wheel pairs are set in radius arms and have a simple coil spring suspension. The body is mounted on the frame with eight anchors. The locomotive is a hood unit type with an internal, eccentrically-positioned operator's cab.

Machinery

Located underneath the front hood is the traction assembly – a K 6 S 310 DR diesel engine and a TD 802 traction generator – and auxiliary machinery powered by the diesel engine via a hydrodynamic transmission. Chillers and ventilators are located here as well. TE 006 traction motors are axle-mounted on the wheel sets. Located underneath the rear hood are batteries and a supply of sand.

Variations

After modifications of the seating of the hood on the frame, the T 669.1 (771) and the wide-gauge version T 669.5 (770.8) were created at SMZ Dubnica.

Users

This class of locomotive, manufactured for Czechoslovak State Railways, Soviet Railways, and railways in Poland, Albania, India, Iraq and Syria numbers over 8,000 units, making it the largest series of locomotives ever manufactured in Czechoslovakia.

References

atlas vozidel (z roku 2009), Motorové lokomotivy v ČR a na Slovensku, M-Presse, Praha 2009
Heiko Rüdiger: Der Flug der Hummeln. Die Diesellokomotiven der Reihen 770/772 in Tschechien und der Slowakei. edition bohemica, Himmelkron 2009, ISBN 978-3-940819-06-2
Helmut Petrovitsch: Europas meistgebauter Dieselbrummer. In: eisenbahn-magazin 6/2014, S. 6–13
Der Modelleisenbahner 8/1972, Fahrzeugarchiv, Seite 251, Organ des DMV

External links

www.t669.org

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Standard gauge locomotives of České dráhy
1500 V DC electric locomotives	ČD Class 100 ČD Class 113
3000 V DC electric locomotives	ČD Class 110 ČD Class 111 ČD Class 112 ČD Class 114 ČD Class 121 ČD Class 122 ČD Class 123 ČD Class 124.6 ČD Class 130 ČD Class 131 ČD Class 140 ČD Class 141 \|ČD Class 150 ČD Class 151 ČD Class 162 ČD Class 163 ČD Class 169 ČD Class 180 ČD Class 181 ČD Class 182 ČD Class 183
25 kV 50 Hz AC electric locomotives	ČD Class 209 ČD Class 210 ČD Class 218 ČD Class 230 ČD Class 240 ČD Class 242 ČD Class 263 ČD Class 280
Multi-system electric locomotives	ČD Class 340 ČD Class 362 ČD Class 363 ČD Class 371 ČD Class 372 ČD Class 380 ČD Class 383 ČD Class 388
Diesel-mechanical locomotives	ČD Class 700 ČD Class 701 ČD Class 702 ČD Class 703
Diesel-hydraulic locomotives	ČD Class 710 ČD Class 715 ČD Class 725 ČD Class 726
Diesel-electric locomotives	ČD Class 704 ČD Class 708 ČD Class 714 ČD Class 720 ČD Class 721 ČD Class 730 ČD Class 731 ČD Class 735 ČD Class 740 ČD Class 741 ČD Class 742 ČD Class 743 ČD Class 749 ČD Class 750 ČD Class 751 ČD Class 752 ČD Class 753 ČD Class 754 ČD Class 755 ČD Class 759 ČD Class 770 ČD Class 771 ČD Class 776 ČD Class 781 ČD Class 794 ČD Class 799
See also List of České dráhy locomotive classes