CATALYTIC CONVERTER

摘要

Provide is a catalytic converter including a substrate which includes regions having different cell densities, in which exhaust gas purification performance is superior in all the regions of the substrate.;A catalytic converter 10 includes catalyst layers in which a noble metal catalyst is supported on a support in surfaces of cell walls 2 of a substrate 1 having a cell structure in a longitudinal direction of the substrate 1 in which gas flows, in which the substrate 1 has a first region 1A having a relatively high cell density and a second region 1B having a relatively low cell density, and a ratio of a thickness of a catalyst layer 3A in the second region 1B to a thickness of a catalyst layer 3 in the first region 1A is in a range of more than 0.95 times and 1.2 times or less.

主权项

1. A catalytic converter comprising:
a substrate having a cell structure in which gas flows; and catalyst layers that contain a noble metal catalyst supported on a support and that are formed on surfaces of cell walls of the substrate along a longitudinal direction of the substrate, wherein the substrate has a first region and a second region, the second region having a cell density lower than a cell density of the first region, the catalyst layers include a first catalyst layer provided in the first region and a second catalyst layer provided in the second region, and a ratio of a thickness of the second catalyst layer to a thickness of the first catalyst layer is more than 0.95 and 1.2 or less.