Low emission cylinder cut-out idle system
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United States of America Patent
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Mar 23, 1993
Grant Date -
N/A
app pub date -
Apr 21, 1992
filing date -
Apr 21, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is directed to reducing unburned hydrocarbons during engine idling. During idling, one cylinder bank of an engine is alternately deactived by fuel cut-off structure with another cylinder bank. Therefore, one bank works twice as hard and consequently produces much lower emissions. A timer alternates between the cylinder banks anywhere from fifteen seconds to four minutes.
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