发明授权
- 专利标题: Exhaust gas catalytic conversion system
- 专利标题(中): 废气催化转化系统
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申请号: US11826558申请日: 2007-07-17
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公开(公告)号: US07785545B2公开(公告)日: 2010-08-31
- 发明人: Seiji Miyoshi , Hideharu Iwakuni , Koji Minoshima , Hiroshi Yamada , Masaaki Akamine , Akihide Takami
- 申请人: Seiji Miyoshi , Hideharu Iwakuni , Koji Minoshima , Hiroshi Yamada , Masaaki Akamine , Akihide Takami
- 申请人地址: JP
- 专利权人: Mazda Motor Corporation
- 当前专利权人: Mazda Motor Corporation
- 当前专利权人地址: JP
- 代理机构: Studebaker & Brackett PC
- 代理商 Donald R. Studebaker
- 优先权: JP2006-241397 20060906
- 主分类号: B01D50/00
- IPC分类号: B01D50/00
摘要:
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.
公开/授权文献
- US20080056965A1 Exhaust gas catalytic conversion system 公开/授权日:2008-03-06