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 (SAE)

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

Media Info

• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Air; Carbon monoxide; Catalytic converters; Exhaust gases; Hydrocarbons; Nitric oxide; Nitrogen oxides
• Uncontrolled Terms: Injection
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

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