公开(公告)号：US20180028972A1

公开(公告)日：2018-02-01

申请号：US15550070

申请日：2016-02-16

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： 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: B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  B01J23/63

CPC classification number: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  B01J37/02

Abstract: 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.