Exhaust Gas Temperature Sensor for OBD-II Catalyst Monitoring

This paper describes a newly-developed, high-performance RTD,(Resistive Temperature detector), which meets OBD-II monitoring requirements. The OBD-II catalyst monitoring requirements are high temperature durability, high accuracy, and narrow piece-to-piece variation.

Catalyst monitoring methods have been reviewed and studied by checking the catalyst exotherm⁽¹⁾⁽²⁾.

The preliminary test results of catalyst monitoring are also described herein.