12AY SERIES 1200-1822MHP

Commercial Engines

Yanmar 12AYM Series Marine Diesel Engine (1200 – 1822hp)

  • Low Fuel & Low Emissions
  • High Torque Characteristic
  • Excellent Durability and Reliablity
  • Easy to Maintain

Engine Model

  • 12AYM-WST (H-rating)  1200mhp @ 1500rpm  / 1550 @1840rpm
  • 12AYM-WGT (L-rating)  1659mhp @ 1900rpm
  • 12AYM-WGT  1822mhp @ 1940rpm

Good economy To achieve the desired workboat level of operating economy. Result. Maximum fuel efficiency with low fuel consumption across a previously unheard of range of use conditions. Lower emissions To minimise adverse effect on the environment. Result. Lower NOx, SOx, CO, less particulates, significantly less black smoke, particularly at idle or during hard acceleration. High torque To achieve the desired workboat responsiveness. Result. Stable high torque in middle and high speed ranges for reliable work performance. The engine performance gives following advantages:

  • Stable cruising with least speed reduction against sudden load changes
  • A wide range propeller matching, from the passenger ship(light/medium duty) to tug boat(heavy duty), is possible
  • Economical with wide min.fuel consumption range both during cruising or performing job duties
  • Produces stable engine performance even doing other duties

Excellent reliability and durability To create a tough engine requiring minimum downtime. Result. Outstanding engine durability made possible by extra-stable lube oil consumption and long life fuel valves at the tip of each injector. Easy to maintain Because it’s a Yanmar. Result. The same compactness and ease of maintenance as ever.

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