发明授权
- 专利标题： Engine exhaust gas purification catalyst and exhaust gas purifier
- 专利标题（中）： 发动机废气净化催化剂和废气净化器
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申请号： US136932申请日： 1998-08-20
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公开(公告)号： US6047544A公开(公告)日： 2000-04-11
- 发明人: Shinji Yamamoto , Satomi Etou , Masahiro Takaya
- 申请人： Shinji Yamamoto , Satomi Etou , Masahiro Takaya
- 申请人地址： JPX Yokohama
- 专利权人： Nissan Motor Co., Ltd.
- 当前专利权人： Nissan Motor Co., Ltd.
- 当前专利权人地址： JPX Yokohama
- 优先权： JPX9-223919 19970820; JPX10-151193 19980601
- 主分类号： B01D53/94
- IPC分类号： B01D53/94 ; B01J23/40 ; B01J35/04 ; B01J37/02 ; F01N3/02 ; F01N3/06 ; F01N3/08 ; F01N3/30 ; F01N11/00 ; F01N13/02 ; F01N13/04 ; F01N3/00
摘要：
In a catalyst unit which purifies the exhaust gas of an engine, a first layer comprising a zeolite hydrocarbon adsorbent is formed on a monolithic substrate. A catalyst layer comprising palladium, platinum or rhodium as a three way catalyst is formed on the first layer. The Geometrical Surface Area of the monolithic substrate is set in the range of 10-35 cm.sup.2 /cm.sup.3. The weight ratio of the first layer and the catalyst layer is set to from 9:1 to 1:4.
公开/授权文献
- US5367029A Thermoplastic molding material 公开/授权日：1994-11-22
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