The on-board tailpipe emissions measurement system (TOTEMS) : proof‐ of‐concept.

Details

• Alternative Title:
  The on-board tailpipe emissions measurement system (TOTEMS) : proof - of - concept : a report to the UVM Transportation Research Center.
• Creators:
  Holmen, Britt ; Robinson, Mitchell ; Sentoff, Karen ; Montane, Paul ; Hathaway, Kevin
• Corporate Contributors:
  University of Vermont. Transportation Research Center
• Subject/TRT Terms:
  • Exhaust pipes
  • Exhaust gases
  • Emissions testing The on-board tailpipe emissions measurement system
  • TOTEMS
• Publication/ Report Number:
  TRC Report # 10-015
• Resource Type:
  Tech Report
• Geographical Coverage:
  Vermont
• Corporate Publisher:
  University of Vermont. Transportation Research Center
• Abstract:
  An on-board tailpipe emissions instrumentation system was designed, assembled and tested as proof-of-concept ; for the University of Vermont’s Transportation Research Center (TRC) Signature Project #2 “real-world” vehicle ; emissions data collection effort. This report summarizes the measurement system’s status as of June 2009 and ; demonstrates that the study team can reliably collect on-board emissions/vehicle performance data. The purpose ; of the new instrumentation package is to collect real-world exhaust emissions for regulated (CO, HC, NOx) and ; unregulated (CO2, air toxics, particle number) pollutant species as well as vehicle operating parameters, all at 1Hz ; temporal resolution, while a test vehicle is driven on the road network in Chittenden County, Vermont. Future ; data collected using the on-board system will be used to model the modal emissions of alternative vehicles. This ; report documents (i) the instrumentation system’s components and the research team’s proposed data collection ; methodology; and (ii) presents initial data sets collected by quantifying real-world emissions from a 1999 Toyota ; Sienna minivan that was used in previous studies conducted by the PI. Unlike previous studies conducted by the ; PI (see Section 8 references for more detail), however, the new instrumentation package collects: (i) the full ; number distributions of particle emissions using a particle spectrometer instrument that was not available ; previously; and (ii) quantifies mobile source air toxic (MSAT) gaseous emissions in addition to criteria pollutant ; (CO, NOx, HC) and greenhouse gas (CO2, N2O, CH4) using a high-speed FTIR instrument specifically designed ; for on-board vehicle exhaust testing. ; This report summarizes initial measurements made by the Signature Project #2 study team using The On-board ; Tailpipe Emissions Measurement System (hereafter, “TOTEMS”) on-board the Toyota Sienna minivan as the ; “proof-of-concept” vehicle prior to initiating testing of two Toyota Camry study vehicles: one hybrid and one ; conventional. The Camry data will be used to build the first second-by-second, real-world emissions database for ; hybrid and conventional light-duty vehicles under cold climate and hilly terrain conditions experienced in ; Vermont. ; As the data in this report document, TOTEMS is a fully functional set of instrumentation developed for ; quantifying tailpipe gas and particle pollutant concentrations, exhaust flow rates, exhaust temperatures, sampling ; temperatures, vehicle position, engine operating behavior, ambient conditions, and instrumentation condition. All ; instrumentation is powered by an on-board battery power supply system to prevent artificial loads on the vehicle ; engine.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20581/dot_20581_DS1.pdf
• File Type:
  [PDF - 8.68 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:840c98888fd807bad5cde28f7f914341bc5a9e5de5044da5be4f206e578bdef5a2cbdc33a9beaac68932e7644743d54cf986a9f71ca8201c6f7f34a1e61a79a3