Reformulation of gasoline by the complex model
Conference
·
OSTI ID:141980
- Universal Oil Products, Des Plains, IL (United States)
The 1990 Clean Air Act Amendments set the stage for the largest change in gasoline properties since lead phaseout. Regulatory negotiations between the EPA, industry, state regulators, and environmental groups, produced an agreement in August 1991 as to the procedures for certifying reformulated gasoline. In addition, to meeting specifications on benzene and oxygen, gasoline must meet specifications on emissions of hydrocarbons, NO{sub x} and toxics. Emissions will be determined by mathematical equations developed by the EPA based on extensive testing of different fuel-automobile combinations. Two sets of equations have been developed, the so called EPA {open_quotes}simple{close_quotes} and {open_quotes}complex{close_quotes} models. A preliminary version of the complex model was issued by the EPA in the Fall of 1992 and will be finalized by March 1993. The complex model is based on emission data generated from many different sources, the Auto/Oil Air Quality Improvement Program, oil companies, and regulatory institutions. This presentation will use a series of cases to show how the complex model predicts the effect of the individual gasoline properties on automobile emissions.
- OSTI ID:
- 141980
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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