Method for restoring the catalytic activity of a catalyst which is arranged in the exhaust tract of a diesel engine and has at least one oxidation function

摘要

The invention relates to a method for restoring the catalytic activity of a catalyst, which is arranged in the exhaust tract of a diesel engine and which contains a catalytically active coating on a honeycomb body without a filter function, which has at least one oxidation function and whose catalytic activity is reduced by deposition of soot particles and hydrocarbons is. The process is characterized in that by temporarily increasing the exhaust gas temperature upstream of the catalyst to a value above 450 ° C., the combustion of the soot particles and hydrocarbons deposited on the catalyst is initiated, and the catalytic activity of the catalyst is thus at least partially restored.