Ceramic insulator for an exhaust gas oxygen sensor

Details Ceramic insulator for an exhaust gas oxygen sensor Ceramic insulator for an exhaust gas oxygen sensor

G - Physics

01

N

73/69

G01N 27/18 (2006.01) G01N 27/12 (2006.01)

Patent

CA 1127871

- 10 - ABSTRACT An improved exhaust gas oxygen sensor of the type adapted for installation in an exhaust conduit of an internal combustion engine. The improved sensor is of the type employing a titania oxygen sensing element responsive to the partial pressure of oxygen in the exhaust gas. A ceramic insulator supports the titania oxygen sensing element and is of improved design. Prior designs have contributed to cold-working of the electrode lead wires con- nected to the titania oxygen sensing element. The improved insulator design has a pedestal located adjacent the passages in the insulator through which the lead wires pass for the purpose of minimizing cold-working of the lead wires. This aids in preventing fracture of the wires during their use in a feedback fuel control system employing the oxygen sensor.

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