Analysis of Particulate Matter Sensor Signals

Paper #:
  • 2012-01-0871

Published:
  • 2012-04-16
DOI:
  • 10.4271/2012-01-0871
Citation:
Bender, D., Peyton Jones, J., and Harshbarger, D., "Analysis of Particulate Matter Sensor Signals," SAE Technical Paper 2012-01-0871, 2012, doi:10.4271/2012-01-0871.
Pages:
11
Abstract:
Production PM sensors are now available and are likely to be key components of PM aftertreatment systems designed to meet 2013 OBD requirements. In this paper a highly simplified analysis is used to give insight into the sensor response of resistive-based devices, and to motivate possible diagnostic strategies. The method has been applied to successive sets of FTP data recorded with DPF's of different failure levels, and despite the very approximate nature of the underlying model, the method appears to discriminate reliably between them.
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