Exhaust gas control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 7, 1981
Grant Date -
N/A
app pub date -
Jul 12, 1979
filing date -
Aug 7, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved exhaust gas control apparatus, which utilizes a 3-way catalyst for reducing the contents of harmful components in exhaust gas, incorporates a diaphragm type air pump for supplying secondary air, upstream of the catalyst, to the exhaust gas. A chamber, which is formed on one side of the diaphragm in the air pump, is communicated through an electromagnetic changeover valve with the upstream side of the catalyst.
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