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Diesel Products

ALCO 251 F
 

ALCO 251 F

The ALCO 251F engine is universally recognized for its durability and reliability in the most demanding stationary and locomotive applications. This rugged 4-stroke engine option is available in 12- and 18-cylinder configurations and affords high specific output with low specific fuel consumption.

Key Advantages

  • Strong, durable cylinder head casting for increased life of critical components
  • Exceptional commonality of components
  • Well established workhorse engine to accommodate multiple applications
  • Known for reliability, high specific output and low specific fuel consumption
  • Quality iron alloy makes cylinder head resist high temperatures and pressures
 

Dimensions

Cyl. RPM A mm (in) B mm (in) C mm (in) Dry Weight kg (lbs)
12V 720-1,200 8,573 (337) 3,486 (137) 2,692 (106) 25,400 (56,000)
16V 9,712 (382) 34,100 (75,200)

Power Rating

Cyl. 50Hz 750 RPM kWe 50Hz 1000 RPM kWe 60Hz 900 RPM kWe 60Hz 1200 RPM kWe
12V 1,309 1,743 1,567 2,009
16V 1,743 2,324 2,091 2,676

 

Engine Specifications

Cylinder Configuration 12V, 16V
Cylinder Bore - mm (in) 229 (9.0)
Piston Stroke - mm (in) 267 (10.5)
Cycle 4 Stroke
Displacement/Cylinder - L (cu in) 10.9 (668)
Mean Piston Speed - m/s (ft/min) 6.4-10.7 (21.0-35.0)
BMEP - bar (psi) 15.8-16.7 (230-240)

Notes:

All ratings subject to factory approved application.

Ratings are based on:
90°F (32.2°C) ambient temp.
28.25 in Hg. (71.6 cm Hg) barometric pressure (min)
1500 ft (457 m) altitude (max)

Standby ratings available

The kWe ratings are based on generators with nominal efficiencies of 96.2%

For installations obtain certified prints.