公开(公告)号：US10159934B2

公开(公告)日：2018-12-25

申请号：US15550070

申请日：2016-02-16

申请人： CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Ichiro Kitamura ,  Keiichi Narita ,  Yasutaka Nomura ,  Ryota Onoe ,  Yuta Morishita ,  Junji Kuriyama ,  Hiroshi Sekine ,  Akihito Inoue ,  Daisuke Ochiai ,  Jun Sawada ,  Naoto Miyoshi ,  Masahiko Takeuchi ,  Akemi Sato ,  Atsushi Tanaka

IPC分类号： B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  B01J37/02

摘要： 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.