Low emission engines
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United States of America Patent
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-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Oct 26, 1993
filing date -
Oct 26, 1993
priority date (Note) -
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Abstract
A small engine emissions control system with a float bowl carburetor minimizing CO emissions by tailoring fuel delivery to engine demand over a broad range of operating speeds and conditions, an exhaust gas recirculation valve to reduce NO.sub.x emissions and a pulse valve mixing fresh air with hot exhaust gases to reduce HC and CO emissions.
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