This paper describes sulfate emission data that were gathered on a series of 2.3L and 400 CID engine vehicles. Determinations were made of the variability of the sulfate emission data from various test cycles and the effect of catalyst pre-conditioning temperature on initial sulfate test levels was studied. An effect due to the size of the vehicle cooling fan during chassis roll testing also was noted. The 1974 production (non-catalyst) and lean burn prototype (non-catalyst) vehicles convert less than or equal to 2% of consumed fuel sulfur to sulfates and are essentially equivalent in this regard. Vehicles with catalysts convert from 1 to 60% of fuel sulfur to sulfates depending upon temperature, oxygen in the exhaust gas, prior catalyst history and test cycles. /GMRL/

Media Info

  • Pagination: 24 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00145272
  • Record Type: Publication
  • Report/Paper Numbers: SAE 760037
  • Files: TRIS
  • Created Date: May 31 1977 12:00AM