Capacitive cylinder pressure sensor
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United States of America Patent
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Nov 27, 2018
Grant Date -
Jan 26, 2017
app pub date -
Jul 22, 2015
filing date -
Jul 22, 2015
priority date (Note) -
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Abstract
A capacitive pressure sensor for an internal combustion engine is provided having a housing having a bottom surface, variable capacitor and circuitry. The variable capacitor is formed by a stationary electrode and an elastically bendable electrode. Pressure exerted on the bottom surface acts to bend the elastically bendable electrode. This bending alters the capacitance of the variable capacitor. The circuitry is configured to generate a signal based on the variable capacitance of the variable capacitor. This capacitance is representative of the pressure exerted on the bottom surface.
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