VEHICLE SULFURIC ACID LEVEL CHARACTERIZATION

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/

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Irish, D C
  • Stefan, R J
• Publication Date: 1976-2

Media Info

• Pagination: 24 p.

Subject/Index Terms

• TRT Terms: Catalysts; Chassis; Data collection; Evaporation; Exhaust gases; Lean fuel mixtures; Sulfates; Sulfuric acid
• Old TRIS Terms: Lean fuel engine
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

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