MAN Engines launches 30 L V12 marine engine

MAN D3872 engine The MAN D3872 has a new common rail injection system with an injection pressure of 2,200 bar that enables low fuel consumption and optimal raw emissions. (Photo: MAN Engines)

MAN Engines is expanding its engine portfolio for workboats with the MAN D3872 engine series. The newly developed V12 engine has a 30 L displacement – a first for the company – and is suited for medium- and heavy-duty applications.

The D3872 is based on a completely new basic engine that the company said benefits from the findings of the established MAN D2862 V12 engine series. Significant changes include an increase in the wall thicknesses of the crankcase, optimized bolting and a new crankshaft with larger bearing diameters.

The diesel engine’s design was also based on findings from development of the E3872 stationary gas engine, which relies on a large number of common parts in the basic engine. The biogas and natural gas variants of the E3872 have already successfully completed several field trials, MAN Engines said, and entered series production in November 2023.

MAN D3872 engine The MAN D3872 engine series is based on a completely new basic engine. (Photo: MAN Engines)

The D3872 incorporates a new coolant pump and an optimized thermostat housing that provide an improved coolant supply and longer engine life. Optional outer skin cooling is available in place of the closed cooling circuit. The new cylinder head of the engine is aerodynamic and cooling-optimized, the company stated. Improvements have also been made to the oil supply.

A new common rail injection system with an injection pressure of 2,200 bar enables low fuel consumption and optimal raw emissions. Combined with the exhaust gas aftertreatment system, the adapted engine control unit meets current emissions requirements, including EPA Tier 4, IMO Tier III or IMO Tier II. The D3872 can also be combined with the “MAN Smart HYBRID Experience” hybrid system, plus is approved for use with HVO.

The compact installation dimensions of the engine (2,235 x 1,250 x 1,320 mm) are almost identical to those of the MAN V12 series with 24 L displacement. At a 2,720-kg (dry) weight, the engine has a power-to-weight ratio of 2.24 kg per kW (1.65 kg per hp) in a small footprint. In future, it will enable use in combination with a modular exhaust gas aftertreatment system to accommodate confined spaces while complying with the EU Stage V emissions directive.

MAN D3872 engine specs Source: MAN Engines

The engine is currently undergoing field trials on the water in customer applications with classified engines – for example, in a remotorization project of a passenger ferry. The D3872 LE432 variant with two-stage turbocharging and an output of 1,650 hp (1,213 kW) for medium-duty applications is scheduled to be available at the end of 2024; further power gradations with single-stage charging for heavy-duty applications and aggregates are planned.

STAY CONNECTED



Receive the information you need when you need it through our world-leading magazines, newsletters and daily briefings.

Sign up

POWER SOURCING GUIDE

The trusted reference and buyer’s guide for 83 years

The original “desktop search engine,” guiding nearly 10,000 users in more than 90 countries it is the primary reference for specifications and details on all the components that go into engine systems.

Visit Now

CONNECT WITH THE TEAM
Becky Schultz Vice President of Content Tel: +1 480 408 9774 E-mail: [email protected]
Julian Buckley Editor Tel: +44 (0) 1892 784088 E-mail: [email protected]
Chad Elmore Managing Editor Tel: +1 262 754 4114 E-mail: [email protected]
Josh Kunz Power Progress Brand Manager Tel: +1 414 379 2672 E-mail: [email protected]
Roberta Prandi Power Progress International Brand Manager Tel: +39 334 6538183 E-mail: [email protected]
CONNECT WITH SOCIAL MEDIA