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. 09, 1988
Filed:
Aug. 21, 1986
Applicant:
Inventor:
Glen A Nyberg, Warren, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204412 ; 204426 ; 204427 ;
Abstract
Rapid response, highly precise determinations of oxygen partial pressures in internal combustion engines operating with lean air/fuel mixtures are accomplished by using a thin film internal reference, solid electrolyte electrochemical type oxygen sensor comprising laterally disposed galvanic sense and pump cells on a single planar substrate, and an internal reference gas chamber provided by a cap. A cerium dioxide, thin film electrode on the galvanic pump cell provides an oxygen reservoir for the internal reference gas chamber.