Fuel supply system for gas engine
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United States of America Patent
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Jun 23, 2015
Grant Date -
May 30, 2013
app pub date -
Jul 31, 2012
filing date -
Nov 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A fuel supply system includes an intake flow passage communicating with an intake port of a gas engine, a fuel shut-off valve assembly for blocking a fuel supply passage to prevent supply of a gas fuel to a fuel mixer, a vacuum flow passage communicating with a vacuum actuator of the fuel shut-off valve assembly and a crank chamber of the gas engine, and means for holding the vacuum flow passage open when the gas engine starts, such that a vacuum produced in the crank chamber is used to actuate the vacuum actuator for switching the fuel shut-off valve assembly to an open position allowing supply of the gas fuel to the fuel mixer.
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