Development of a portable remote sensing system for measurement of diesel emissions from passing diesel trucks.

Details

• Creators:
  Rahai, Hamid R. ; Lu, Bei
• Corporate Creators:
  METRANS Transportation Center (Calif.)
• Subject/TRT Terms:
  • Exhaust gases
  • Polluting gases
  • Diesel engine exhaust gases
  • Diesel trucks
  • Air quality
  • Measurement
  • Diesel motor exhaust gas--Measurement
  • Trucks ¿x Motors (Diesel)--Exhaust gas--Measurement
  • Air quality--Measurement
• Publication/ Report Number:
  METRANS 08-22
• Resource Type:
  Tech Report
• Geographical Coverage:
  California
• Edition:
  Final report.
• Corporate Publisher:
  METRANS Transportation Center (Calif.)
• Abstract:
  A wireless remote-sensing system has been developed for measurement of NOx and particulate matters (PM) emissions from passing diesel trucks. The NOx measurement system has a UV light source with quartz fiber optics that focused the light source into a spectrometer. The signals from the spectrometer was routed through a wireless antenna to a remote computer and NOx measurements were performed by comparing the spectra of the receiving signals to a reference spectrum for compliance. Laboratory measurements were performed with the exhaust of a stationary 3-cylinder diesel engine and field tests were with a diesel-powered forklift truck. Results of the remote sensing system were compared with direct exhaust measurements. For NOx measurement, comparing the variance of the spectrum between the 200-300 nm wavelengths with direct diesel engine exhaust measurement, an approximate NOx/variance ratio of 0.5 was found for the stationary measurement and ratios of 0.3-0.4 were obtained for transient measurements.
• Format:
  PDF
• Funding:
  07-350808
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23268/dot_23268_DS1.pdf
• File Type:
  [PDF - 1.27 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:2c2d2a749e662ca2d2024630f97b4c74f5693fa1610f9f13b11307b5151a26d8eb7a9982af77bc13a7214f660dd1475c7b9f28339de48dfcd631fcb27cf63d10