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:
Jul. 17, 2012
Filed:
Mar. 15, 2005
Bertrand Lemire, Schierling, DE;
Bertrand Lemire, Schierling, DE;
Continental Automotive GmbH, Hannover, DE;
Abstract
A gas measuring system, having a measurement sensor () which records an exhaust gas from an internal combustion engine and has an outer electrode (), which is exposed to the exhaust gas to be measured, a first measuring cell (), a second measuring cell () that is connected to the first measuring cell (), and in which a measuring electrode () is arranged, and a reference electrode () that is exposed to the ambient air. The measuring cells () are located in a solid electrolyte (), and all the electrodes () are in contact with the solid electrolyte. A circuit which in a first pump flow (Ip) pumps oxygen ions between the first measuring cell () and the outer electrode (), in a second pump flow (Ip) pumps oxygen ions between the second measuring cell () and the outer electrode (), and in a third pump flow (Ip) pumps oxygen ions between the measuring electrode () and the outer electrode (), and which comprises a control unit (C) which records Nernst voltages between the measuring cells () and a reference electrode ().