公开(公告)号：US20200290019A1

公开(公告)日：2020-09-17

申请号：US16086083

申请日：2017-03-13

Applicant: CATALER CORPORATION

Inventor： Ryota ONOE ,  Kazuhiko ITO ,  Takahiro HARADA ,  Chihiro KASUYA

IPC: B01J23/46 ,  B01J23/44 ,  B01J23/10 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/28

Abstract: Provided is an exhaust gas purification catalyst of OSC material-containing type that allows a favorable HC purification (oxidation) treatment to be performed even in a case where HC emissions are comparatively large, such as during engine startup. The exhaust gas purification catalyst of the present invention includes, as a catalyst layer (20), a front section (24) positioned upstream in an exhaust gas flow direction, and a rear section (26) positioned downstream of the front section in the exhaust gas flow direction. The front section contains Pd as a catalyst metal but does not contain an OSC material. The proportion, at which the front section is formed from the upstream leading end in the exhaust gas flow direction, is 10% to 40% with respect to 100% of a total length of the substrate (1) in the exhaust gas flow direction.