Exhaust gas sensor output signal control system

G - Physics – 01 – N

Patent

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73/69

G01N 27/04 (2006.01)

Patent

CA 1063827

EXHAUST GAS SENSOR OUTPUT SIGNAL CONTROL SYSTEM ABSTRACT OF THE DISCLOSURE A system for generating an output signal from an exhaust gas sensor which output signal is linear for variations in the air/fuel mixture. The measured signal can be used to control the air/fuel mixture at a desired value. The system includes two voltage dividers connected in parallel to a regulated voltage. One voltage divider includes a variable resistance type exhaust gas sensor and generates a signal voltage while the other voltage divider generates a reference voltage, the voltages being received at separate inputs of an amplifier the output of which is rendered linear with respect to changes in the air/fuel ratio of the combustion mixture by a feedback circuit.

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