Types - Catalytic Converter

Catalytic Converter

First introduced more than 20 years ago, they are now fitted as standard. Walker has made a major contribution to pioneering catalytic converter technology since 1963.

A catalytic converter looks similar to a small silencer and is fitted in the exhaust system's engine pipe, close to the exhaust manifold to minimize heat loss before the gas enters the catalytic converter.

The role of the catalytic converter is to convert pollution gases, such as hydrocarbons, carbon monoxide and oxides of nitrogen into harmless carbon dioxide nitrogen emissions and water vapor.

The catalyst in a catalytic converter is a precious metal coating applied to a ceramic or metal substrate that resembles a honeycomb. The substrate has a multi-channel structure with a high surface area which results in a coated area equivalent to twice the size of a football field.

Correct operation of the catalytic converter depends on proper engine tuning and management, the use of lead free fuel and appropriate exhaust system maintenance.

In many countries, legislation requires that catalytic converters be checked regularly.