A THREE-WAY CATALYTIC MUFFLER USING PROGRESSIVE AIR INJECTION FOR AUTOMOTIVE EXHAUST GAS PURIFICATION

The present paper shows that the simultaneous removal with a single catalytic muffler of the three types of pollutants (NO, CO and HC) is possible without requiring a very precise adjustment of the engine equivalence ratio or permanent control of the supply of secondary air added ahead of the muffler. The system studied consists of a muffler in which secondary air is supplied from a plurality of points located within the catalyst bed itslef in order to have an oxygen concentration in the treated gas that increases progressively between the inlet and the outlet. /SASI/

  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Prigent, M
    • Raynal, B
    • Courty, P
  • Publication Date: 1977-2

Media Info

  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00173219
  • Record Type: Publication
  • Report/Paper Numbers: SAE 770298
  • Files: TRIS
  • Created Date: May 3 1978 12:00AM