52
Superior
Technology
Emission characteristics
The lowest possible level of environmental
pollution renders necessary sophisticated design
as well as extensive matching and tuning work.
In doing so, it is often necessary to consolidate
conflicting requirements such as low pollutant
emission and high engine power output.
All Volkswagen Marine boat engines comply with
the Bodensee Schifffahrtsverordnung Stufe 2
(Lake Constance Shipping Ordinance, Stage 2)
(BSO II).
Pollutants in exhaust gas
The following exhaust gasses mainly occur in the
exhaust emissions of diesel engines:
•
Carbon monoxide (CO)
Carbon monoxide is produced by combusting
fuels containing carbon. It is odourless and
colourless, explosive and highly toxic. Carbon
monoxide inhibits erythrocytes (red blood
corpuscles) from transporting oxygen and is
lethal even in small concentrations in
breathing air. In the open it oxidizes to form
carbon dioxide within a short space of time.
Carbon dioxide is a constituent part of air.
•
Gaseous hydrocarbons (HC)
They occur in the exhaust gas following
incomplete combustion. Hydrocarbons irritate
the sense organs and, depending on the type,
can also cause cancer.
•
Soot particles
Soot particles are produced by the
combustion process in a diesel engine. The
effects on the human body are currently not
fully clarified.
•
Nitrogen oxide (NOx)
Nitrogen oxide is produced by high pressure,
high temperature and surplus oxygen during
combustion.
Emission characteristics
Содержание SDI 55-5
Страница 51: ...51 Superior Technology Notes ...
Страница 83: ...83 Superior Technology Notes ...