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Introduction
The burning of fossil fuels is generally a very clean reaction, meaning it does not create much pollution. However, when combustion occurs with either too little or too much air, dangerous chemicals are produced, such as carbon monoxide and nitric oxide. Catalytic converters aid in the transformation of these pollutants into less harmful substances, like carbon dioxide and water.
How does a catalytic converter work?
The most common catalytic converter is located between the engine and muffler on your car. Essentially, it consists of a can that is separated into many sections by clay sheets. These clay sheets have dozens of very fine holes in them. These holes are lined with a thin metal oxide and small particles of platinum and rhodium. Creating many small surfaces on the metal is necessary because reactions only happen on the surfaces and these metals are very expensive. Chemicals like carbon monoxide and nitric oxides bond to the surfaces of these metals as they react to form less harmful gases such as carbon dioxide, nitrogen, oxygen and water.
catalatic converter are conversion for two:
1.co level
by converting not all but most of co to co2..
2.hc level
absorbs vapour hc(hydrocarbon or unburned gases) to liquid state so to not harm enviorment.
most of cars need cat. replacement after 100,000km
thats what i know
some countries reqiure by law "cat" in car to minimize dangerous gases coming out from exhaust, but pakistan doesnt. i thought of it when i swaped a high performance engine in my xe. corolla, but here in pakistan there no use for it,,,,. but i would like to recommend it to rikhas who blow out more smoke than anything on road.
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