OXYGEN SENSOR Russian patent published in 1997 - IPC

FIELD: measurement of content of oxygen in exhaust gases of automobile internal combustion engine. SUBSTANCE: in case of oxygen sensor there are mounted in sequence sealing ring, envelope of sensitive element with outer flange, contact bushing with ring-shaped contact which end is provided with longitudinal slots. Contact bushing houses rod of heating element. Insulation bushing centers rod of heating element in coaxial direction. Current lead of sensitive element mechanically contacting rod of heating element is fitted with additional contact element made fast to rod of heating element and equipped with limiter of axial movement of rod of heating element interacting with contact bushing. EFFECT: enhanced accuracy and authenticity of oxygen sensor. 7 cl, 2 dwg