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Effects of Methanol/Gasoline Blends on Hot Weather Driveability
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English
Abstract
The effects of methanol/cosolvent/gasoline blends on hot weather driveability are surveyed. Results show that startability after engine-off soak drastically deteriorates in an EFI vehicle. By observing the behavior of the fuel in the delivery pipe during hot-start testing and the injected fuel spray shape at high fuel temperature, the authors confirmed that the main cause of this malfunction was the vapor lock in the injector nozzle.
The relationship between hot weather driveability and fuel properties is discussed. The gasoline volatility expression commonly used to indicate deterioration in hot weather driveability was found to underestimate the increase in volatility of blended fuels at higher temperatures. A suggestion is made for a modification to the expression to include the effects of methanol blending on volatility characteristics at high temperatures so that EFI vehicle hot-startability may be predicted.
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Citation
Fujimoto, Y., Kudo, S., and Imamura, Y., "Effects of Methanol/Gasoline Blends on Hot Weather Driveability," SAE Technical Paper 870368, 1987, https://doi.org/10.4271/870368.Also In
References
- Furey Robert L. “Volatility Characteristics of Gasoline-Alcohol and Gasoline-Ether Fuel Blends” SAE Paper No. 852116
- Palmer F.H. et al. “Fundamental Volatility/Driveability Characteristics of Oxygenated Gasolines at High Underbonnet Temperatures” SAE Paper No. 831705
- Palmer F.H. et al. “Road Trials to Assess the Hot Weather Driveability Characteristics of Gasoline Containing Oxygenates in European Cars” SAE Paper No. 831706
- Menard Holget et al. “Engine and Vehicle Concepts for Methanol-Gasoline Blends” SAE Paper No. 831686
- Yaccarino Philip A. “Hot Weather Driveability and Vapor-Lock Performance with Alcohol-Gasoline Blends” SAE Paper No. 852117
- Jones J.M. et al. “The Setting of European Gasoline Volatility Levels to Control Hot-Weather Driveability” SAE Paper No. 852118
- Aihara H. et el. “Effect of Methanol blended Gasoline Properties on Vehicle Performance” JSAE 31 1985
- JARI. The report prepared for Japan international Trade and industry Ministry 1984
- Caddock B.D. et al. “The Hot-Fuel Handling Performance of European and Japanese Cars” SAE Paper No. 780653
- CRC. CRC Report 455 1973