CRC Low- and Intermediate- Temperature Driveability Program Using Gasoline- Alcohol Blends

Abstract

A cooperative test program was conducted in 1986 and 1987 to characterize the relationship between cold-start and warmup driveability and gasoline volatility parameters of T10, T50, and T90 distillation temperatures. Hydrocarbon-only and gasoline-alcohol blends were tested. The test program was divided into two phases: the intermediate-temperature (40 F to 60 F) phase was conducted in Paso Robles, California, from October 13 through November 14, 1986; and the low-temperature (10 F to 40 F) phase was conducted in Brainerd, Minnesota, from January 19 through February 18, 1987. Driveability was better with high volatility fuels, and at intermediate ambient temperatures. Fuel-injected vehicles exhibited better driveability than carbureted vehicles. Driveability with hydrocarbon-only gasolines with significantly better than gasoline-ethanol blends, and gasoline-methanol:TBA blends. Compared with gasoline-methanol:TBA blends gasoline-ethanol blends gave significantly better driveability. Regression equations which related volatility to vehicle cold-start and warmup driveability were developed for both temperature phases.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1990
Accession Number
ADA221321

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  • C4I

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  • Alcohol Fuels
  • Alcohols
  • Analysis Of Variance
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