IN-TANK EVAPORATIVE EMISSION CONTROL SYSTEM
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United States of America Patent
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Issued Date -
Mar 14, 2013
app pub date -
Sep 4, 2012
filing date -
Sep 12, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An evaporative emission control system includes a fuel vapor adsorption unit in physical contact with a heat generator inside a fuel tank. The heat generator can be a fuel pump that heats the adsorption unit during a purge cycle, thereby increasing the rate of desorption of captured fuel vapor during the purge cycle. The fuel vapor adsorption unit and/or an additional fuel vapor adsorption unit may be located inside the tank volume proximate a tank inlet opening so that incoming fuel can cool the adsorption unit(s) during a refueling event, thereby increasing the adsorption efficiency of the adsorption unit(s) during the refueling event.
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