ČKD T-669 diesel locomotive

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
Gauge 1,435 mm (4 ft 8 1⁄2 in) – 1,524 mm (5 ft)
Wheel diameter 1,050 mm (3 ft 5 in)
Wheelbase 8,660 mm (28 ft 5 in)
Length 17,240 mm (56 ft 7 in)
Loco weight 115 t
Fuel type Diesel
RPM range 750
Engine type ČKD K 6 S 310 DR
Cylinders 6
Cylinder size 310 mm × 360 mm (12 in × 14 in)
Transmission DC Electric
MU working yes
Performance figures
Maximum speed 90 km/h (56 mph)
Power output 993 kW

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 8000 units, making it the largest series of locomotives ever manufactured in the Czechoslovak Republic.

See also

References

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