Use of catalytic converter parts and catalytic converter parts of automobile exhaust gas purification equipment

摘要

The present invention relates to a catalytic converter part (1) of an automobile exhaust gas purification device (4) having a support having a honeycomb structure, and a catalytic coating is continuously applied to a channel wall of the support. The coating has a noble metal content (PGM) determined by at least one element of the platinum group and is provided with a first coating zone, the first coating zone being longitudinally Extending from the inflow end (2) to the first coating boundary (G1) and having a first noble metal content and further provided with a second coating zone, this second coating zone Is, in the longitudinal direction, a second coating boundary (G1) arranged downstream from the first coating boundary (G1) from the first coating boundary (G1). ) And has a second noble metal content that is low compared to the first noble metal content, and is further provided with a third coating zone, the third coating zone being the second coating It extends from the boundary (G2) to the outflow side end (3) and has a third noble metal content that is lower than the second noble metal content. This coating is configured according to the present invention as a coating with consistent oxidation catalysis and is free of rhodium. For this catalytic converter component (1), a particle filter (6) disposed in the exhaust gas purification device (4), and an SCR catalytic converter (7, 8) connected downstream of the particle filter (6), Is intended for use in an automobile exhaust gas purification device (4) for heating the exhaust gas by oxidation of hydrocarbons upstream of the series structure.