Gas flow fuel metering
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United States of America Patent
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Apr 14, 2020
Grant Date -
Oct 20, 2016
app pub date -
Apr 20, 2016
filing date -
Apr 20, 2015
priority date (Note) -
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Abstract
A fuel metering valve includes a valve body housing a valve element in an interior chamber between an inlet port and an outlet port, an actuator coupled to move the valve element relative to the valve body, and a controller configured to regulate the position of the valve body. The valve element regulates a flow of fuel through the valve body. The controller regulates the position of the valve body via an actuator based on measurements by differential and absolute pressure sensors to achieve a target mass flow rate of the fuel through the valve body. The differential pressure sensor is calibrated for accuracy only across a limited scale range based on a predetermined maximum subsonic pressure.
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