Lambda sensor for vehicle exhaust, includes gas-permeable section of cable insulation at bush outlet with spaced porous polytetrafluoroethylene covering, in cooler location to prevent loss of porosity and contamination

摘要

The gas-permeable section of the cable insulation (6, 7) connects immediately at the outlet end of the bush (2), where it is encased by a porous tube (10) of gas-permeable (polytetrafluoroethylene) PTFE. This leaves radial clearance (11) between porous PTFE tube and gas permeable section.