Solutions for Enhancing Remote Sensing High Emitter Vehicle Screening Procedures

Remote Sensing Devices (RSDs) are used as supplementary tools to identify high emitting vehicles (HEVs) in order to help achieve the U.S. National Ambient Air Quality Standards (NAAQS). However, tailpipe emissions in grams cannot be directly measured using remote sensing (RS) systems because they utilize a concentration-based technique. Consequently, converting emission measurements from concentration to mass is needed. The research presented here combines the carbon balance equation with fuel consumption estimates to make this conversion. In estimating vehicle fuel consumption rates, the VT-Micro model and a Vehicle Specific Power (VSP)-based model (the PERE model) are considered and compared. The results of the comparison demonstrate that both of the VT-Micro and PERE models provide reliable fuel consumption estimates (R2 of 90% and higher for a 1993 Honda Accord with a 2.4L engine). The study clearly demonstrates that the proposed procedure works well in converting concentration measurements to mass emissions and can be applicable in the screening of HEVs and normal emitting vehicles for several vehicle types such as sedans, station wagons, full-size vans, mini vans, pickup trucks, and SUVs.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 21p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01043610
  • Record Type: Publication
  • Report/Paper Numbers: 07-0504
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 5:05PM