catalytic converter


catalytic converter

noun

: a part of an automobile exhaust system that removes harmful chemicals

Full Definition of CATALYTIC CONVERTER

:  an automobile exhaust-system component containing a catalyst that causes conversion of harmful gases (as carbon monoxide and uncombusted hydrocarbons) into mostly harmless products (as water and carbon dioxide)

First Known Use of CATALYTIC CONVERTER

1955

catalytic converter

noun    (Concise Encyclopedia)

In automobiles, a component of emission control systems used to reduce the discharge of noxious and polluting gases from the internal-combustion engine. The catalytic converter consists of an insulated chamber that contains a honeycomb structure or pellets coated with a catalyst, through which the exhaust gases are passed. Hydrocarbons and carbon monoxide in the exhaust are converted to water vapour and carbon dioxide, and nitrogen oxides are reduced to nitrogen and oxygen.

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