Method and apparatus for measuring the o.sub.2 content of a gas

Details Method and apparatus for measuring the o.sub.2 content of a gas Method and apparatus for measuring the o.sub.2 content of a gas

G - Physics

01

R

73/69

G01R 27/04 (2006.01) G01N 27/12 (2006.01) G01R 27/02 (2006.01)

Patent

CA 1084730

METHOD AND APPARATUS FOR MEASURING THE O2 CONTENT OF A GAS ABSTRACT OF THE INVENTION A method and apparatus for measuring the O2 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 functional 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 O2 content of the exhaust gas, with the temperature effect of the exhaust gas on the resistor being minimized and/or eliminated. - 1 -

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