VEHICLE TESTING TO DETERMINE FEASIBILITY OF EMISSION INSPECTION AT ALTITUDE

A laboratory study was conducted on 1968-1972 model vehicles at altitude to evaluate vehicle emission reduction concepts investigated and applied at lower elevations. Since vehicle exhaust hydrocarbons and carbon monoxide emissions are intrinsically high at higher elevations, it was suspected that emission reducing strategies might not prove significantly beneficial at higher elevations. Furthermore, emission reduction factors by engine maintenance are not defined. The study quantitatively defined hydrocarbon, nitrogen oxides, and carbon monoxide emission reduction. Direct maintenance cost was determined. Key mode and idle emission inspection concepts are discussed.

  • Corporate Authors:

    Automotive Testing Laboratories, Incorporated

    19900 Colfax Avenue
    Aurora, CO  USA  80011

    Environmental Protection Agency

    401 M Street, SW
    Washington, DC  USA  20460
  • Authors:
    • Liljedahl, D R
    • Porter, H E
  • Publication Date: 1972-9

Media Info

  • Pagination: 361 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00143785
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Contract Numbers: EPA-68-01-0439
  • Files: TRIS
  • Created Date: Nov 17 1977 12:00AM