06047544 is referenced by 69 patents and cites 13 patents.

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.

Title
Engine exhaust gas purification catalyst and exhaust gas purifier
Application Number
9/136932
Publication Number
6047544
Application Date
August 20, 1998
Publication Date
April 11, 2000
Inventor
Masahiro Takaya
Yokosuka
JP
Satomi Etou
Tokyo
JP
Shinji Yamamoto
Yokosuka
JP
Agent
Foley & Lardner
Assignee
Nissan Motor
JP
IPC
F01N 3/00
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