Browse Publications Technical Papers 2001-01-0988
2001-03-05

Wide Range and High Performance Exhaust Gas Temperature Sensor using Perovskite-type Rare Earth Metal Oxide 2001-01-0988

An exhaust gas temperature sensor, which can be used for controlling of new exhaust gas purification systems, was developed. The sensor can detect wide temperature range and has good response and reliability. To achieve wide temperature detection and good thermal durability, perovskite-type rare earth oxide was selected as a sensing element. The perovskite-type material functions as an insulator and also as a superconductor depending upon the combinations of metal ion. In this case, YCrO3 was selected as a base material. By doping various metal ions into base material, wide range detection from 100 to 900 °C and good thermal durability was obtained. To achieve good response and mechanical reliability simultaneously, metal sheathe cable with a small diameter was used in the structure of sensing portion.

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