How car catalysts work and what they do.

[obi_waynne]

What is a cat and what does it do? In an ideal world a car engine would efficiently burn all the petrol supplied to the engine and emit nothing but carbon dioxide and water vapour. Sadly, the internal combustion engine is not a very efficient beast, as a result several different pollutants are emitted in the exhaust gases. Catalytic converters were made mandatory in the UK for all new cars from 1st January 1993 in order to reduce pollution.

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