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:
May. 28, 2002
Filed:
Feb. 22, 2000
Olaf Jach, Boeblingen, DE;
Lothar Diehl, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A sensor for determining gas components and/or gas concentrations in gag mixtures, in particular, in the exhaust gas of an internal combustion engine, includes an inner pump electrode, an inner pump electrode supply conductor, a measuring electrode and a measuring electrode supply conductor. The inner electrode and the measuring electrode are in contact with the measuring area. In addition, separation is maintained between the measuring electrode supply conductor and the inner pump electrode supply conductor at least in the hot area of the sensor. At least in the hot area at least one of the electrode supply conductors is in contact with at least one oxygen reservoir, there being an at least largely gas-tight barrier between this and the measuring area. Furthermore, a sensor may include an inner pump electrode and an outer pump electrode, an inner pump electrode supply conductor and an outer pump electrode supply conductor, separation being maintained between them by a solid electrolyte foil, the outer pump electrode supply conductor being in contact at least in some areas with an oxygen reservoir. The design features of the two sensors may also be implemented in one sensor.