05-11-2012, 03:46 PM
Motor Vehicle Exhaust Emissions
Motor Vehicle.pdf (Size: 1.35 MB / Downloads: 162)
Traffic growth
Mobile and flexible
The car has becomes more and more important.
It is now a key factor in the "quality of life". It
gives us personal mobility and sometimes
expresses our social standing. On the other
hand, it has also become a tool which we use to
carry out everyday things.
It gives people the advantages of flexibility and
locational freedom.
Similar requirements are also resulting in an
increase in road freight transport.
Today, goods need to be transported and supplied
just-in-time. Also, the road still offers the
most flexible infrastructure despite its heavy use.
However, the interaction between the motor vehicle
and the environment has become an increasingly
important consideration.
Therefore, the onus is on the car industry to
counteract the growing volume of traffic by
developing new products in ever quicker succession.
It will be necessary to continue to reduce
globally the emission of environmentally toxic
exhaust gas constituents in future.
Exhaust gas constitution
Development in general
In recent years, resolutions and laws aimed at curbing the emission of air pollutants have been passed,
not only in the Federal Republic of Germany but also throughout Europe and the world. In this context, it
has of course been necessary to place special emphasis on road traffic.
The more stringent exhaust emission standards which came into effect in the USA and Europe prompted
the car industry to develop new and improved technologies for reducing and avoiding pollutants in
exhaust gases.
Comparison between car and trucks
To develop future vehicles, it is important among other things to examine what vehicle group produces
what exhaust gas components. Although freight transport can no longer match the new registration
figures and mileage of private cars, trucks are largely responsible for the production of certain exhaust
gas components. Through the use of heavy diesel engines, freight transport accounts for a large
proportion of nitrogen oxide (NOX) and particulate matter (PM) emissions.