Remote and On-Board Instrumentation for Automotive Emissions Monitoring

Paper #:
  • 951943

Published:
  • 1995-08-01
Citation:
Jack, M., Ahlgren, W., Bahan, T., Gray, M. et al., "Remote and On-Board Instrumentation for Automotive Emissions Monitoring," SAE Technical Paper 951943, 1995, https://doi.org/10.4271/951943.
Pages:
16
Abstract:
New instruments are quantitatively measuring vehicle emissions under real-world conditions. Hughes has fielded a cost-effective, real-time remote emissions sensor (RES) employing infrared technology to determine emission levels of CO, HC, and NO. Separate processors within the RES capture license plate and speed/acceleration data within the same 0.8 - second window as emissions data. Field tests have shown excellent correlation between high emitters identified by the RES and by IM240 measurements. Similar technology is being employed on miniaturized high-temperature units for vehicular on-board emissions monitoring. An on-vehicle prototype will be demonstrated this year.
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