Emissions reduction of high and low polluting new technology vehicles equipped with a CeO2 catalytic system
The efficiency of a catalytic system that provides the vehicle combustion chamber with an adequate amount of cerium oxide (CeO2), without affecting the operational parameters of the engine, has been studied for pollutant emissions reduction. New technology gasoline engine passenger cars, equipped with this catalytic system, have been driven on their normal route by the same drivers, in order to obtain the same traffic conditions and the same driving mode, as far as possible. These vehicles were tested for CO and HC emissions before and after the installation of the catalytic system. The new technology passenger cars examined have been divided into two categories using as criterion the level of their initial emissions (before the installation of the CeO2 catalytic system). The two categories are: (a) high polluting cars with CO and HC emissions above the implemented standards; and (b) low polluting cars with emissions below the standards. Both car categories equipped with the CeO2 system, present important reduction of the pollutant emissions. The results are interpreted statistically and they are correlated with other studies.
Nikolaou
K
Organization for the Master Plan and Environmental Protection of Thessaloniki, Greece. kinikola@hol.gr