V18 engine

A V18 engine is an eighteen-cylinder piston engine where two banks of nine cylinders are arranged in a V configuration around a common crankshaft.

ALCO 18-251 engine being used as a backup electrical generator at a wastewater plant in Montreal.

V16 engines are a rare configuration, with large V18 diesel engines have seen limited use in haul trucks, electricity generation, rail transport, and marine propulsion. There are no known automobiles that have used V18 engines.

Examples
NameDisplacementPower outputFuelNotes
ALCO 18-251[1]12,024 cu in (197.04 l)4,500 hp (3.36 MW)DieselOriginally designed and manufactured by
American Locomotive Company; now manufactured by
Fairbanks Morse Engine.[1]
Cummins QSK78[2]4,735 cu in (77.59 l)3,500 hp (2.61 MW)DieselDerived from the V16 QSK60.[2]
Marketed by Komatsu as the SSDA18V170.[3]
Wärtsilä 18V50DF[4]125,000 cu in (2,050 l)23,530 hp (17.55 MW)Diesel or
natural gas		Available for both marine propulsion and power generation, and used in e.g. Humboldt Bay power station.[5]

The BelAZ 75600 and Liebherr T 282B haul trucks are powered by the Cummins QSK78 engine, while the Komatsu 960E-1 haul truck is powered by the Komatsu SSDA18V170 engine.

In 1972, the Candian locomotive manufacturer MLW-Worthington produced the MLW M640 prototype diesel-electric locomotive powered by the ALCO 18-251 engine, however the locomotive did not reach production.

See also

References
  1. "Power Solutions: 251 Diesel Engines" (PDF). Fairbanks Morse Engine. Retrieved 26 June 2011.
  2. "Cummins QSK78". Cummins. Retrieved 25 June 2011.
  3. "New Engine - Rated 3500 horsepower at any altitude". MINExpo Report. Retrieved 26 June 2011.
  4. "Wärtsilä 50DF". Wärtsilä. Retrieved 2 August 2017.
  5. Humboldt Bay, USA Power Plant Wartsila 18V50DF Natural Gas. Industrial Marine Power Forum. Retrieved 2011-10-22.
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