GE U18B

The GE U18B diesel-electric locomotive was introduced by GE Transportation as a branch line roadswitcher in 1973. It was the only North American locomotive powered by the 8-cylinder 7FDL engine.

GE U18B
A Maine Central Railroad U18B, on lease to the short-lived Niagara and Western New York Railroad, July 2002
Type and origin
Power typeDiesel-electric
BuilderGeneral Electric
ModelU18B
Build dateMarch 1973 October 1976
Total produced163
Specifications
Configuration:
  AARB-B
  UICBo′Bo′
Gauge4 ft 8 12 in (1,435 mm) standard gauge
Length54 ft 8 in (16.66 m)
Prime moverGE 7FDL
Engine typeV8 4-stroke diesel
AspirationTurbocharger
Displacement5,344 cu in (87.57 L)
Cylinders8
Cylinder size9 in × 10.5 in (228.6 mm × 266.7 mm)
TransmissionDC generator, DC traction motors
Loco brakeStraight air, Dynamic
Train brakes26-L Air
Performance figures
Power output1,800 hp (1.34 MW)
Career
LocaleNorth America

Original Owners


Railroad Quantity Numbers Notes
Maine Central Railroad 10 400–409 Blomberg trucks
Ferrocarriles Nacionales de México 45 9000–9044 AAR type-B trucks
Providence and Worcester Railroad 1 1801 FB-2 trucks
Seaboard Coast Line Railroad 105 250–261, 300–392 325-392 with Blomberg trucks, all others FB-2
Texas Utilities 2 101–102 AAR type-B trucks

References

  • "1". Locomotive Service Manual: Running Maintenance and Trouble-Shooting for Series-7 Road Locomotives. GEK-30150. General Electric Company. 1978.
  • GE Transportation. Operating Manual - Diesel-Electric Locomotive - GEJ-3856C (1973).
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