New diesel engine V28AHX has been launched into the market
- World’s best fuel economy in the class is achieved -
NIIGATA Power Systems Co., Ltd., (Niigata) has developed the model
V28AHX (4,140-6,660 kW) as the high power version of the medium-speed
diesel engine 28AHX series (2,070-3,330 kW), Niigata’s main product.
This engine has been developed, incorporating the technologies on the
engine performance developed for the in-line type, with the Vee-type for
use not only as main propulsion engines but also as large
diesel-electric marine propulsion engines and stationary engines.
Shipment of this engine will start in 2015, and annual sales of 50 units
are projected five years later in 2019. The scale model of this new
engine was displayed in SMM 2014, the leading international maritime
trade fair, held on September 9 through 12, 2014, in Hamburg, Germany.
This new Vee-type engine meets the IMO Tier II NOX limit and achieves
the world’s best fuel economy in the class as in-line 28AHX engine, a
large number of which were produced and delivered as the main propulsion
engine owing to its superior performance and light weight and compact
design. A 15% reduction in weight is also achieved compared with the
conventional engines in the same class by Niigata. Development of this
new engine is supported as a part of the by the development program of
“the Research and Development of Electrical Propulsion System for Large
Supply Vessels” under the technology research and development support
program of the Ministry of Land, Infrastructure, Transport, and Tourism
(MLIT).
With the development of this Vee-type engine, the product line of the
28AHX series with the best-in-class fuel economy expanded to 6,660 kW as
the single unit output. Owing to the expanded selection in the number of
cylinders, flexible adaptation of the engine to the required output
becomes possible by changing the number of cylinders while maintaining
the interchangeability of the main component. Such a feature of the
28AHX series will make this engine available as the main engine for
large offshore support vessels, a prime mover of the electric propulsion
system, and a generator set for land use in addition to its primary
application in tugboats.
Niigata continues to supply products to society that are
environmentally conscious with the minimum lifecycle costs that include
newly developed environmentally friendly V28AHX.
Model | V28AHX | L28AHX | |||||||
Application | Marine main propulsion/ generator |
Marine auxiliary generator, Power generation |
Marine main propulsion | Marine auxiliary generator | |||||
No. of cyl. | 12/16/18 | 6/8/9 | |||||||
Cyl. Bore | mm | 280 | 280 | ||||||
Piston Stroke | mm | 390 | 390 | ||||||
Engine Speed | min-1 | 750 | 800 | 720 | 750 | 750 | 800 | 720 | 750 |
Engine output | kW/cyl | 345 | 370 | 350 | 365 | 345 | 370 | 350 |
![]() |