Draft Analysis of Heavy-Duty Diesel Vehicle Idle Emission Rates

This report describes the Environmental Protection Agency's preliminary analysis of heavy-duty vehicle emission data under engine idle operating conditions, where vehicle velocity is zero. It presents analysis and results for several pollutants and operating parameters. The pollutants include emissions of nitrogen oxide (NOx), carbon monoxide (CO), hydrocarbon (HC) and particulate matter (PM) emissions. The operating parameters include the effects of both non-discretionary idle and discretionary idle, extended idle modes, temperature and parasitic load effects (air conditioner, heater, refrigeration, etc.). EPA has done only limited testing to investigate the emission effects of idle emissions from heavy-duty vehicles. Instead, this report is primarily the product of a literature search of available test results from heavy-duty diesels. As such, it combines the data and observations from a variety of recent studies.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Tables;
  • Pagination: 52p

Subject/Index Terms

Filing Info

  • Accession Number: 01520482
  • Record Type: Publication
  • Report/Paper Numbers: EPA420-D-03-001
  • Files: TRIS
  • Created Date: Mar 18 2014 9:27AM