March separately, but strike together! That is a good way of describing the collaboration between Augsburg and Copenhagen on a new high-pressure SCR system for four-stroke engines. For technical reasons, the exhaust gas cleaning system could not be tested on a four-stroke engine of the current construction type. This is because the SCR has been specially developed for engines with two-stage turbocharging, which are not yet in series production at MDT.
However, similar exhaust conditions are offered by twostroke engines like those developed by colleagues in Copenhagen and built by licensees. A partner in Japan, Mitsui, was quickly foand with Copenhagen’s assistance, and no sooner had the Japanese experienced an initial presentation of the SCR system in Augsburg than things took off, as Project Manager Plamen Toshev remembers: “The people responsible at Mitsui offered us a date for the field test straight after the first meeting. Mind you, we only had six months in which to organize everything. That was quite a challenge, but there was no way we weren’t going to pull it off, of course.” Colleagues from Copenhagen and Deggendorf assisted. The Deggendorfers were responsible for designing the reactor and delivered in a record time of just ander five months.
The set-up between Augsburg
and Copenhagen was intriguing,
as in this instance MDT Augsburg
is an SCR supplier and as such
was subject to a strict acceptance
process. As time went on, however,
both teams identified more
and more with the SCR system.
By the time the project was over,
the mental partition between
Augsburg and Copenhagen had
disappeared completely. It was
now simply ‘our’ reactor. This is a
positive example of Engineering
The short preparation time presented
Plamen Toshev and his
team with a number of challenges.
Only 60 percent of the scope
of supply could be tested before
being shipped to Japan, while the
7-ton reactor only just fitted in
the largest scheduled cargo plane.
But having the courage to take
risks paid off.
The system passed
all the tests with flying colors. It
was clear just a week in that everything
was spot on,”
Being designed for four-stroke engines,
which have to get by in engine
rooms where space is at a
premium, the high-pressure SCR
MDT style is much smaller than
competing systems. That also
went down well with the 100 or so
customers Mitsui invited to a test
bench event on 11 April 2017. “It’s
too good to be true!” said an enthusiastic
customer. Approval by
the classification society in Japan
was a mere formality too. The
next step is to put the high-pressure
SCR system into series production
and organize sales. Bids
are a lready b eing invited f rom
suppliers. When it comes to sales,
turbocharger colleagues are stepping
into the breach.
In future, a high-pressure SCR system
made in Augsburg will be offered
for exhaust gas cleaning in
two-stroke engines alongside the
tried and tested exhaust gas recirculation.
As far as Plamen Toshev
is concerned, this is a perfect arrangement:
“The faster we get the
high-pressure SCR out in the
field, the sooner we’ll have reliable
results, which can also be
transferred to the new generation
of our four-stroke engines, if
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Marine Engines & Systems