Studebaker & Brackett PC
Exhaust gas catalytic conversion system
An upstream catalyst and a downstream catalyst are disposed in an exhaust passage of an engine. The downstream catalyst contains in the same catalyst layer thereof. Rh-doped CeZrNd mixed oxide particles on which Rh is supported and active alumina particles on which Pt is supported. The upstream catalyst is a three-way catalyst containing an oxygen storage component having a lower oxygen storage capacity than the Rh-doped CeZrNd mixed oxide.
Mazda Motor Corporation
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Masaaki Akihide Seiji Koji Hideharu Hiroshi
Akamine Takami Miyoshi Minoshima Iwakuni Yamada