Method of determining the zero-clearance pressure in a controlled clearance piston gauge
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United States of America Patent
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Dec 8, 2009
Grant Date -
Jan 22, 2009
app pub date -
Jul 17, 2007
filing date -
Jul 17, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of determining the zero clearance pressure in a controlled clearance piston gauge. The typical method includes pressurizing the cylinder in which the piston resides to a given system pressure. The jacket pressure is then changed and the exhaust gas pressure build-up rate at different jacket pressures is measured. The zero clearance pressure to be where the exhaust gas pressure build-up rate is zero.
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