Device and process for purifying exhaust gas

摘要

The system for the de-contamination of exhaust gases from an IC engine (1), comprises a primary means of gas treatment (4) such as a 3-way catalyser in the exhaust system (2), and also a secondary unit up-stream from (4)which eliminates inhibition of the catalytic action in (4) and allows the reaction to commence at a lower temperature. Also claimed is the procedure of de-contamination using the system described.