![](images/Logos/Green%20Car%20Congress.jpg)
MAN
Engines puts first dual-fuel hydrogen-powered engines for workboats
into operation
17 June 2022
MAN Engines
recently put its first two dual-fuel hydrogen-powered engines for work
boats into serial operation.
The engines are twelve-cylinder diesel engines of type MAN D2862
LE448, each with an output of 749 kW (1019 hp) at 2100 rpm. The
engines are IMO Tier III-certified and equipped with a Selective
Catalytic Reduction exhaust gas aftertreatment system.
![](images/images_06_21_2022/pic1.jpg)
For dual fuel operation with hydrogen and/or diesel fuel, MAN Engines
has converted a conventional diesel engine of type MAN D2862 LE428
into the D2862 LE448. Only the hydrogen injection system (shown here
in blue) has been retrofitted. The output, operating behavior and
other characteristics of the diesel engine remain unchanged.
Both V12 engines
have been prepared for dual-fuel operation by MAN Engines, and
supplemented with a hydrogen injection system by development partner CMB.TECH.
The low-emission engine is used on the world’s first hydrogen-powered
crew transfer vessel (CTV), the “Hydrocar 48” from Windcat Workboats.
What’s
special about our technology is that we use a conventional diesel
engine, which doesn’t need to be optimized for hydrogen.
—Werner Kübler, Head of Development at MAN Engines
![](images/images_06_21_2022/pic2.jpg)
The Hydrocat 48 from Windcat Workboats is the first crew transfer
vessel with a low-emission dual fuel hydrogen drive.
A proven V12
marine engine is thus used in which hydrogen is introduced into the
charge air via an adapter and is added to the combustion cycle. The
combustion process is started according to the diesel principle, which
requires the injection of approx. 5% of diesel fuel. The diesel fuel
common rail injection parameters have been optimized here for dual
fuel operation.
![](images/images_06_21_2022/pic3.jpg)
Hydrocat engine room.
MAN Engines
has long-standing experience in the development of fuel-saving and
reliable diesel engines, including for work boats. Building on this
experience, we were also able to achieve the best consumption values
in dual fuel operation, and ensure the same operating behaviour as
displayed by diesel operation at full load. At the same time, we also
reduce CO2 tailpipe
emissions through the use of hydrogen by an average of approx. 50%,
and even up to 80% as a peak value.—Werner
Kübler
A further
advantage of using the conventional and sophisticated diesel engine is
the accustomed easy handling when it comes to maintenance and service.
Moreover, pure diesel operation can continue without interruption if
the hydrogen supply is exhausted.
By starting
with dual fuel combustion engines, we can make hydrogen technology
operational in the industry and kick-start further development of the
technology, regulation, supply chain, etc.—Willem
van der Wel, Managing Director of Windcat Workboats
Green Play Ammonia™, Yielder® NFuel Energy.
Spokane, Washington. 99212
www.exactrix.com
509 995 1879 cell, Pacific.
exactrix@exactrix.com
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