MAN in-line six-cylinder engine

The six-cylinder base engine has already been in use in numerous on- and off-road applications since 2007 and has proven itself hundreds of thousands of times. The robustness and reliability in the work boat industry has been further proven by extensive field testing over several thousand hours on ferries, pilot boats and high-speed catamarans.

The modern common rail injection system used in the D2676, with fuel pressures up to 1,800 bar, ensures high mean pressures and optimized combustion. This increases on-board comfort due to reduced vibration and noise emissions. The inclusion of a Miller or Atkinson camshaft has helped to achieve an average 10 % fuel consumption reduction compared to the engine’s predecessors.

As part of this improvement in fuel consumption, all engines also comply with the current strict emission regulations. To achieve this, MAN Engines engages in close exchange of information with all required institutions, including the US Environmental Protection Agency (EPA) and the International Maritime Organization (IMO).

The new D2676 engines clearly show the wide torque plateau typical of MAN marine engines. The 368 kW (500 HP) engine, for example, provides 2,196 Nm between 1,400 and 1,600 rpm for heavy-duty operation and the most powerful variant 625 kW (850 HP) even provides 2,740 Nm between 1,400 and 2,100 rpm for light-duty operation. This allows maximum torque to be realised over a wide speed range with the lowest specific fuel consumption.

The MAN D2676 with 12.4 l displacement was developed for passenger ferries, pilot boats, fishing boats and lifeboats, among others.

For ship designers, the basic unit of the D2676 with dimensions of 1,800 x 922 x 1,103 mm (L x W x H) offers MAN’s usual compact dimensions – in this case with an even slimmer oil sump. At 1,200 kg (dry), the new engine generation also impresses with an even better power-to-weight ratio.

Optionally, the units are classified and available with keel cooling.