Oliff PLC
Exhaust gas purification catalyst
Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst comprising a wall-flow-type substrate and first and second catalytic layers. The first catalytic layer is provided to the interior of a partition wall, in contact with an entrance cell, from an exhaust inlet-side end in the running direction, having a length L1 less than Lw. The second catalytic layer is provided to the interior of a partition wall, in contact with an exit cell, from an exhaust outlet-side end in the running direction, having a length L2 less than Lw. An internal portion of partition wall in contact with entrance cell has a substrate-exposing segment near the exhaust outlet-side end.
TOYOTA JIDOSHA KABUSHIKI KAISHA CATALER CORPORATION
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Ryota Naoto Hiroshi Jun Akihito Yasutaka Daisuke Yuta Ichiro Atsushi Masahiko Akemi Keiichi Junji
Onoe Miyoshi Sekine Sawada Inoue Nomura Ochiai Morishita Kitamura Tanaka Takeuchi Sato Narita Kuriyama