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:
Jun. 10, 1986
Filed:
Dec. 13, 1984
Applicant:
Inventors:
Assignees:
Mitsubishi Denki Kabushiki Kaisha, both of, JP;
NGK Spark Plug Co., Ltd., both of, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204410 ; 204406 ; 204412 ; 204425 ;
Abstract
An air/fuel ratio detector for use in measuring or controlling oxygen concentration in exhaust gas from a combustion device, comprising a plurality of solid electrolyte, oxygen ion conducting elements and an electronic control unit. The detector output, which is different over a wide range of air/fuel ratios, from fuel-rich to fuel-lean, enables monitoring of engine operating conditions without having to know beforehand whether the air/fuel ratio is fuel-lean or fuel-rich, and may be used as a feedback control in an internal combustion engine.