Experimental data were generated to support an assessment of the relationship between automobile fuel economy and emissions control systems. Tests were made at both the engine and vehicle levels. Detailed investigations were made on cold-start emissions devices, exhaust gas recirculation systems, and air injection reactor systems. Based on the results of engine tests, an alternative emission control system and modified control strategy were implemented and tested in the vehicle. With the same fuel economy and NOx emissions as the stock vehicle, the modified vehicle reduced HC and CO emissions by about 20 percent. By removing the NOx emissions constraint, the modified vehicle demonstrated about 12 percent better fuel economy than the stock vehicle.

  • Supplemental Notes:
    • Sponsored in part by the National Aeronautics and Space Administration.
  • Corporate Authors:

    Jet Propulsion Laboratory

    California Institute of Technology, 4800 Oak Grove Drive
    Pasadena, CA  United States  91103
  • Authors:
    • Dowdy, M W
    • Baisley, R L
  • Publication Date: 1978-6

Media Info

  • Pagination: 209 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00186568
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-CR-157604 Final Rpt.
  • Contract Numbers: DOT-RA75-41
  • Files: TRIS
  • Created Date: Feb 27 1979 12:00AM