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9:35 PM Mon 12 Jan 2009 GMT
 | | 'MAN V12-1800hp'
MAN Nutzfahrzeuge
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What more could it take to satisfy a boat-owner? Fascinating performance and the best of boating comfort. In the new generation of V engines MAN Nutzfahrzeuge presents a genuine power package.
The top performing V12-1800 diesel in the MAN Nutzfahrzeuge -engine range generates a maximum torque of 6020 Nm even at 1200 rpm and accelerates at an impressive pace.
The 12-cylinder brings yachts into the planing phase fast, achieving high speeds in next to no time. Common Rail direct injection enables fuel injection at very high pressure, producing optimally smooth running and the pleasant ride comfort of this V12. Two-stage turbocharging also features in the engine's technology.
Compactly scaled at 2087 x 1153 x 1275 mm (L x W x H without gearbox), the V12-1800 leaves designers plenty of freedom and flexibility when planning their yachts. Weight is another advantage - in relation to performance the 12-cylinder at just 2365 kg weighs in at 1.31 kg per unit of horsepower.
To achieve features like these, MAN's engineers further developed the V engine throughout, optimising engine components in the process. Cooling of the new V engines is by a plate heat exchanger, which allows flexible configuration of the cooling system.
In addition to this the V12 comes with a space-saving and low-weight SAE1 flywheel housing. An advantage for engine installation by a boat builder is the modified exhaust system with a central gas outlet. All parts needing maintenance such as fuel and oil filters are arranged for ease of access. And the water pump is driven by a gear instead of a belt.
Turning to the engine proper, here too the designers have made interesting modifications. The V12-1800 generates a constant 1800 hp (1324 kW) between 2100 and 2350 rpm. The use of extremely high-strength materials, such as steel pistons, permits gas pressures up to 240 bar and ignition pressures up to 1600 bar. Here a bedplate concept is implemented in a yacht engine for the first time to create the extra strength.
This bedplate replaces the single bearing caps of the crankshaft, and plays a major part in reinforcing the crank case and minimising noise emission. Second-generation Common Rail injection plus an optimally conceived combustion process mean high performance together with exemplary emission figures. All engines naturally comply with current international exhaust directives.
Innovative and future-oriented - MAN engine portfolio for yachts and pleasure craft
On show at Sanctuary Cove in addition to the new V8-1200 & V12-1800 is the tried and tested MAN R6-800 inline engine. This slim 6-cylinder unit produces 800 hp (588 kW) at 2300 rpm. It reaches its maximum torque of 2700 Nm at 1200 rpm. The wide-spanned useful range of rpm results in powerful acceleration. For rated output the economical 6-cylinder consumes just 158 litres/hour. Internationally specified emission figures are no problem for the innovative technology.
For yachts and speedboats MAN offers eight powerful and compact diesel engines rated from 537 kW (730 hp) to 1324 kW (1800 hp). The engines are shipped ready for incorporation and are optimally designed for the particular application and its operating conditions.
Following installation, MAN will undertake inspection plus acceptance and full first-time startup of an engine. A Gold Standard certificate for engine acceptance is an extra guarantee for the boat owner. All engines comply with international exhaust standards.
Visit MAN at the 21st Sanctuary Cove International Boat Show: stand 361, Pavilion C.
All enquiries: Alex Campbell Tel: 08 9335 9777 email: alexc@seapower.com.au
by Alex Campbell
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Cape Leeuwin, WA
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