No exhaust emission control method and arrangement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 30, 1999
Issued Date -
N/A
app pub date -
Mar 16, 1999
filing date -
Sep 28, 1996
priority date (Note) -
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status (Latency Note)
Importance
Abstract
NO.sub.X conversion of exhaust gases from lean mixture engines such as Diesel engines is improved by providing a catalytic converter having three zones, the first zone containing an NO.sub.X storage material on a .gamma.-aluminum oxide layer, the second zone having a layer with a noble metal, and the third zone containing an oxygen storage layer.
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