A QUALITY CONTROL TECHNIQUE FOR CORRELATING EXHAUST GAS ANALYSIS SYSTEMS

A simple, inexpensive, critical flow blender has been developed for filling a tedlar bag with controllable concentrations of HC, NO sub x, CO sub 2, and CO gases at levels encountered in automobile emissions testing. According to a daily schedule, a technician takes the bag to all analyzer sites in the laboratory for analysis. The concentrations indicated by each site are compared to the overall averages. The results are stored in a computerized data base from which control charts, statistical analyses, and interpretations of significant differences among test sites can be made. The precision, accuracy, and statistical interpretations of the data are discussed. /GMRL/

  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Pausell, C D
    • Keller, J
  • Publication Date: 1977-3

Media Info

  • Pagination: 17 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00165017
  • Record Type: Publication
  • Report/Paper Numbers: SAE 770138
  • Files: TRIS
  • Created Date: Nov 23 1977 12:00AM