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.

Date of Patent:
Oct. 11, 2022

Filed:

Dec. 13, 2018
Applicant:

Kautex Textron Gmbh & Co. KG, Bonn, DE;

Inventors:

Karl-Ludwig Krieger, Brinkum, DE;

Jakob Happel, Brinkum, DE;

Hartmut Wolf, Konigswinter, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/02 (2006.01); G01N 27/22 (2006.01);
U.S. Cl.
CPC ...
G01N 27/221 (2013.01); G01N 27/026 (2013.01); G01N 27/226 (2013.01); G01N 27/228 (2013.01);
Abstract

Methods for determining an electrical conductivity of an operating liquid in an operating liquid container for a motor vehicle. The operating liquid container includes at least one capacitor which is fastened to a container wall of the operating liquid container and has a first electrode and a second electrode opposite said first electrode. A first method determines the electrical conductivity of the operating liquid by means of a frequency-dependent phase progression of the impedance of the at least one capacitor. Another method determines the electrical conductivity of the operating liquid by means of a frequency-dependent capacitance profile of the at least one capacitor. An operating liquid container which is designed for carrying out the methods.


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