Emissions control during an automatic engine restart
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United States of America Patent
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Nov 10, 2015
Grant Date -
May 1, 2014
app pub date -
Oct 31, 2012
filing date -
Oct 31, 2012
priority date (Note) -
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Abstract
Embodiments for performing an automatic stop-start operation are provided. In one example, a method for an engine comprises during an automatic stop, injecting a water-containing fluid onto a closed intake valve of a cylinder while the engine is at rest, and on a subsequent restart, fueling the cylinder after at least one intake stroke and subsequent exhaust stroke are performed in the cylinder.
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