Feature 2
one hour every six hours. This takes the applications in the offshore market. The It is also being promoted as a marine
respective outputs to 6000kW (12-cylinder engine is also available in an STC (sequential auxiliary, at slightly lower ratings than those
engine), 8000kW(16-cylinder), and turbocharging) version. Originally designed in propulsion applications.
10,000kW(20-cylinder). The 20-cylinder in the UK as the RK280 engine at the former The first 28AHX engine is scheduled for
model is therefore the first engine to give Ruston works, the 28/33 series is now delivery in 2010 and the company plans to
10MW at 1000rev/min. produced by MAN at Augsburg, where the manufacture 70-100 units per year. The new
Additional features of the state-of-the- type has reached its new development stage. prime mover is integral to Niigata’s strategy
art V28/33D design include MAN’s newly Japan’s prolific and diverse marine of raising its share of the global market
developed TCA33 turbocharger, which engine sector continues to reinvest in its for azimuth thrusters from a claimed 30%
is a compact unit specially tuned for the extensive, home-grown range, providing to 40%, using its strengths as a supplier of
V28/33D engine, and MAN’s SaCoSone a valuable source of plant for the national full systems and drawing benefit from the
safety and control system. SaCoSone allows shipbuilding industry while serving the increased scope in unitary powers afforded
precise ‘shaping’ of the rate and timing of wider market. Niigata Power Systems has by the 28AHX diesel.
fuel injection, giving greater control over augmented its medium-speed portfolio The engine employs the Miller cycle,
the combustion process. with the 28AHX type, an IMO Tier and produces less NOx at all loads without
Significantly, MAN has achieved the II-compliant, 280mm-bore design covering any loss of power, with a claimed 2%
highest power density in the engine’s class the 2070-3330kW power band in six-, eight- improvement in specific fuel consumption
while complying with IMO Tier II and EPA and nine-cylinder in-line configurations. relative to earlier designs.
II emission legislation. Design measures Running speed is 800rev/min. Overall, the period under review has
to achieve these emission standards have The new series has been mainly conceived witnessed undiminished attention to design
included an optimised injection system in mind of proprietary Z-Peller azimuth improvements and technological advance,
and combustion chamber, and use of the thruster installations on tugs, supply ships together with measures aimed at improving
Miller cycle. and other vessels, allowing higher-powered the economics of production. These
The V28/33D is targeted at propulsion concentrations than before. The growth in endeavours should benefit both maker and
applications in the fast ferry, naval and containership size, in particular, necessitates user in the long-term, and increase resilience
super-yacht markets, and at genset tugs of increased performance and potency. in the face of cyclical market conditions. SBI
SBI_MarApr10_p30-31-32-33.indd 33Some 160 years ago a fellow countryman of 26/02/2010 12:13:41
ours invented the propeller and got it spinning.
Today, we are the right people
to let you stop and hold it!
Visit us at
Rotterdam, The Netherlands
November 3 - 6, 2009
Hall 1A, Booth 1.733
" 2
" 2
5 . 4
5 . 4 / . 3
/ . 3
Untitled-2 47 03/09/2009 11:59:19
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