Exhaust emission control device for a diesel engine
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United States of America Patent
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-
Jun 19, 1990
Grant Date -
N/A
app pub date -
Dec 7, 1988
filing date -
Dec 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exhaust emission gas control device having a first filter trapping particulates contained in an exhaust gas, and a second filter removing offensive odor components in the exhaust gas. The first filter is a honeycomb type having a cordierite substrate on which .tau.-alumina is coated. The second filter is provided downstream of the first filter, and is formed by an ion-exchange of copper on a synthetic zeolite rich in silica to form copper ions thereon.
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