LOW ACTUATING FORCE CANISTER PURGE VALVE
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United States of America Patent
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N/A
Issued Date -
May 30, 2013
app pub date -
Oct 3, 2012
filing date -
Oct 3, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A canister purge valve for an internal-combustion engine is provided with a housing including a supply channel that connects a fuel-vapor inlet port to a fuel-vapor outlet port. A valve scat is disposed across the supply channel. A valve shutter has a pressure-compensating channel and is movably mounted within the supply channel to move from an “open” position, in which the valve shutter is distant from the valve seat, to a “closed” position, in which the valve shutter is pressed against the valve seat. A rigid stem is mechanically coupled to the valve shutter to move the valve shutter from the “open” position to the “closed” position and seals the; pressure-compensating channel in the “closed” position.
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