Exhaust line and exhaust gas purification line for an engine of an automotive vehicle and vehicle with such a line

摘要

The line has a catalytic converter (2) comprising a substrate presenting a channel density less than 500 cells per square inch. Another catalytic converter (3) is placed downstream of a particulate filter (1) and comprises a substrate presenting high channel density greater than 900 cells per square inch. The catalytic converter (3) ensures the treatment of carbon monoxide at the time of regeneration of the particulate filter.