The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2018
Filed:
Jul. 22, 2015
Applicant:
Teknologian Tutkimuskeskus Vtt Oy, Espoo, FI;
Inventors:
Assignee:
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 15/08 (2006.01); G01L 23/12 (2006.01); G01L 9/00 (2006.01); G01L 9/12 (2006.01); F01L 19/00 (2006.01);
U.S. Cl.
CPC ...
G01M 15/08 (2013.01); G01L 9/0005 (2013.01); G01L 9/0033 (2013.01); G01L 9/0072 (2013.01); G01L 9/12 (2013.01); G01L 23/12 (2013.01); G01L 23/125 (2013.01); F01L 19/00 (2013.01);
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.