MAN Engines targets EU Stage V heavy-duty marine use
22 October 2024
MAN Engines is expanding its diesel engine portfolio for marine applications with the addition of the MAN D3872 in the LE427 variant for heavy-duty applications. The new variant meets the emission standards of EU Stage V for inland navigation with the limits of 1.8 g/kWh nitrogen oxides (NOx), 0.015 g/kWh particulate matter (PM) and 1x1012 particles/kWh (particle number/PN).
To meet EU Stage V, MAN Engines relies on a compact and flexibly installable exhaust gas aftertreatment system consisting of a DPF and SCR system. (Photo: MAN Engines)
The D3872 LE427 has an output of 920 kW (1,250 hp) at 1,800 rpm and is equipped with an exhaust gas aftertreatment system consisting of a diesel particulate filter and selective catalytic reduction (SCR) system. The additional high output is intended to address new applications in inland navigation such as push convoys, tugboats, barges, passenger ships and special vessels.
Like all engines from the current marine portfolio, the heavy-duty variant is approved for use with regenerative diesel in accordance with the EN15940 standard in Europe and the American Society for Testing and Materials (ASTM) D975 specification.
As an alternative, the D3872 is available with an outer skin cooling system instead of a closed cooling circuit.
The D3872 with 1,250 hp (920 kW) at 1,800 rpm will be available in EU Stage V from the third quarter of 2025. Other emission stages such as EPA Tier 4, IMO Tier III and IMO Tier II are planned for 2026.
With the addition of the heavy-duty variant, MAN Engines’ product range for EU Stage V for inland waterway vessels now includes 12.4 L inline six-cylinder engines and V12 engines with a displacement of 24.2 and 29.6 L. The engines cover outputs from 290 to 1,066 kW (394 to 1,450 hp) and take into account the requirements of light, medium and heavy-duty applications.
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