Environmental Engineering Reference
In-Depth Information
• Low
sulfur
diesel
fuel
may
not
lubricate
engines
as
required;
therefore,
mechanical parts may need extra lubrication; and
• The change from hot HFO to cold diesel fuel must be done smoothly to avoid
the injection pump piston seizing up.
The use of an SCR catalyst is the primary method for decreasing NO
x
emis-
sions. This can be implemented in up to 90-95% of all ships. Advantageously,
SCR is an additional technology and does not influence fuel consumption.
The secondary method is adding water to fuel to produce a fuel emulsion and
humidifying the air for combustion which can lower emissions by 10-15%.
However, these measures can cause corrosion in the engine and in the exhaust gas
after treatment system, and increase fuel consumption. On-board monitoring
equipment can discover deteriorations caused by humidifying.
In the future, emission trading will more and more emphasize decreasing
technologies of fuel consumption and exhaust gas emissions also on ships. For the
precise analysis of quality parameter the implementation of a monitoring system in
the combustion and in the exhaust gas after treatment system may become more
widespread.
Strengthened use of wind and solar energy and improving fuel management are
a realistic way of increasing the efficiency of marine engines. Although new
renewable energy sources will be quickly developed, there will be no alternatives
to internal combustion engines using navy fuel for the next 30-40 years. Broad
range applications of technologies with synthetic and biogenic fuels in shipping
are expected in the far future.
Ships on inland water ways are becoming a more important part of sustainable
transportation. In the course of this process, inland and coast navigation produce
pollution which has an effect on residents in especially sensitive regions such sea
coasts and harbor areas. Expected that in this sector, applications of biogenic and
synthetic fuels will be more quickly introduced than in offshore zones.
References
1. Transportation
and
Energy.
2. The
number
of
cars
will
increase
in
the
future.
3. New integrated combustion system. For future passenger car engines.
http://www.ec.europa.
4. Cutting down CO
2
emissions by engine downsizing—what are the prospects? 08 March,
5. How does variable turbine geometry work?
http://www.paultan.org/2006/08/16/how-does-
6. Der Verbrennungsmotor von Morgen. AutoBild, July 2009, pp 40. Hamburg. ISSN: 0930-
7095.
http://www.autobild.de
7. Diesel Abgastechnik-3. Toyota DPNR.
http://www.kfztechnik/motor/diesel/dieselabgas3.htm
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