Fuel system having multiplex director
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United States of America Patent
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Jul 16, 2019
Grant Date -
Jan 18, 2018
app pub date -
Sep 28, 2017
filing date -
Mar 29, 2015
priority date (Note) -
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Abstract
A fuel tank system having a fuel tank and a fuel vapor recovery system including a vapor vent line fluidly coupled between the fuel tank and a canister, and a vapor purge line fluidly coupled to the canister. A multiplex director is selectively fluidly coupled to a first location in the fuel vapor recovery system and a second location in the fuel vapor recovery system. The multiplex director is movable between a first position where the multiplex director is fluidly coupled to the first location and is fluidly blocked from the second location, and a second position where the multiplex director is fluidly coupled to the second location and is fluidly blocked from the first location. The multiplex director is configured to monitor at least one of a pressure and a hydrocarbon concentration in the first location and the second location when fluidly coupled thereto.
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