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:
Feb. 12, 2002
Filed:
Apr. 10, 2000
Applicant:
Inventor:
Earl Wayne Lankheet, Grand Blanc, MI (US);
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/7407 ;
U.S. Cl.
CPC ...
G01N 2/7407 ;
Abstract
Herein described is an exhaust gas sensor that is used to detect gas concentration in a “lean only” exhaust stream. The gas sensor comprises a single cell within a dielectric substrate. The cell has an electrolyte with an inner and outer electrode disposed against opposite sides of the electrolyte. A porous protective layer is disposed against the outer electrode. Gases can enter and exit the galvanic cell through the porous protective layer. A voltage is applied across the electrodes, and ions are actively pumped out of the cell. The applied current can be used to determine a specific gas concentration in the exhaust stream.