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:
Jan. 24, 2012
Filed:
Dec. 18, 2008
Da Yu Wang, Troy, MI (US);
Sheng Yao, Macomb, MI (US);
David D. Cabush, Kokomo, IN (US);
Walter T. Symons, Grand Blanc, MI (US);
Robert J. Farhat, Grosse Pointe Woods, MI (US);
Da Yu Wang, Troy, MI (US);
Sheng Yao, Macomb, MI (US);
David D. Cabush, Kokomo, IN (US);
Walter T. Symons, Grand Blanc, MI (US);
Robert J. Farhat, Grosse Pointe Woods, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An exhaust gas sensing system and a method for determining concentrations of exhaust gas constituents are provided. The exhaust gas sensing system includes a NHsensing cell, a NOsensing cell, a NOpumping cell, and a current sensor that detects an electrical current flowing through the NOpumping cell. A computer determines a NOconcentration value, a NHconcentration value, a NO concentration value, and a NOconcentration value based on signals from the NHsensing cell, the NOsensing cell, and the current sensor.