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Gasolines reformulated specifically for reducing vehicle emissions will result in the most significant changes in the U.S. refining industry since the advent of unleaded gasoline. This paper will review the results from the Auto/Oil Air Quality Improvement Research Program showing the beneficial effects on vehicle emissions of individually decreasing gasoline aromatic, olefin and sulfur contents, 90% distillation temperature, and Reid vapor pressure, and of adding oxygenates. The paper discusses the importance of reformulated gasolines for reducing emissions from existing vehicles by complying with requirements in the Clean Air Act and California's Low Emission Vehicle/Clean Fuels Program. It will show the importance of controlling specific aromatic and olefin compounds in gasoline, and it will discuss how automotive manufacturers will utilize reformulated gasolines to meet future stringent vehicle emission standards.
reformulated gasolines, vehicle emissions, standards for gasoline, aromatics, olefins, RVP, oxygenates, sulfur, 90% distillation temperature
Head, General Motors Research Laboratories, Warren, MI
Section Manager, General Motors Research Laboratories, Warren, MI