Infrared Thermometry for Diesel Exhaust Aftertreatment Temperature Measurement

Jian Kong, Albert J. Shih
2004 SAE Technical Paper Series   unpublished
The in-situ measurement of the temperature distribution on the cavity wall surface in diesel particulate filters using the infrared radiation thermometry was developed. The temperature measurement system consists of a sapphire fiber with 45° angled tip, PbS/PbSe two-color sensor, and data conditioning and acquisition device. A calibration technique using the blackbody cavity was developed. Calibration curves were generated between 80 to 400°C, the temperature range of special interest for
more » ... ations in catalyzed diesel particulate filters. One-color and two-color radiation thermometry methods were both employed and compared. The wall surface temperature of a microwaveheated ceramic filter was measured at four locations. This study demonstrates the feasibility of using the infrared thermometry for non-contact temperature measurement at a specific region within the cavity of diesel exhaust aftertreatment devices.
doi:10.4271/2004-01-0962 fatcat:lqdnp3sa55gt5afdcwkdz57okm