26-10-2010, 02:48 PM
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CATALYTIC CONVERTER
SUBMITTED BY:
PRINCE GARG (1504323) KETAN MITTAL (1504265)
SUBMITTED TO:-
ER.RAJAN GARG
MECH. DEPTT.
ABSTRACT
Growth in population and growth in number of vehicles every year have combined together to give dramatic increase in both water and air pollution problems. The automotive vehicles have been a significant contributor to air pollution on total mass basis. According to one survey it has been shown that transportation contributes about 42% (by wt.) of the major pollutants. Motor vehicles alone contribute about 39%. Transportation contributes about 50% of the man made hydrocarbons (HC), a little over 60% of the total carbon mono-oxide (CO) emission and about 40% of the nitrogen oxide (NOx).
Major pollutants from automobiles are unburned hydrocarbon (UBHC), oxides of nitrogen, carbon monoxide, lead compounds, and oxides of sulphur. The air pollution due to these pollutants affects adversely materials, animals and human life. It reduces visibility to a large extent causing traffic hazards. The vegetarian and plants are affected badly by sulphur dioxide, photo chemical smog and lead.
