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:
Apr. 03, 1979
Filed:
Sep. 26, 1977
Joseph V Bienkowski, Fostoria, OH (US);
Donald J Romime, Fostoria, OH (US);
Donald C Davis, Fostoria, OH (US);
Bendix Autolite Corporation, Fostoria, OH (US);
Abstract
A method and apparatus for measuring the O.sub.2 content in an exhaust gas of an internal combustion engine by exposing two resistors to the exhaust gas of an internal combustion engine. The resistance of both resistors varies as a function of the temperature of the exhaust gas to which it is exposed. However, the resistance of one of the resistors also varies as a function of the oxygen content of the exhaust gas. Therefore, an electrical signal can be obtained which is a function of the O.sub.2 content of the exhaust gas, with the temperature effect of the exhaust gas on the resistor being minimized or eliminated.