Capacitive cylinder pressure sensor

Teuvo Sillanpää (Inventor), Panu Koppinen (Inventor), Kai-Erik Elers (Inventor)

Research output: PatentPatent


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.

Patent family as of 8.12.2021
CN107923810 A 20180417 CN201680050824 20160719      
CN107923810 B 20200519 CN201680050824 20160719      
EP3325932 A1 20180530 EP20160739512 20160719      
JP2018521325 T2 20180802 JP20180503242T 20160719      
JP6681972 B2 20200415 JP20180503242T 20160719      
US10139313 BB 20181127 US20150805478 20150722      
US2017023440 AA 20170126 US20150805478 20150722      
WO17013109 A1 20170126 WO2016EP67161 20160719      
WO17013109 A8 20170316 WO2016EP67161 20160719

Link to currentpatent family on right 

Original languageEnglish
Patent numberUS2017023440
IPCG01M 15/ 08 A I
Priority date22/07/15
Publication statusPublished - 26 Jan 2017
MoE publication typeH1 Granted patent


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