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Combustion and Emission Characteristics of Gasoline Blended With Alcohols

[+] Author Affiliations
Shenghua Liu, Yi Li, Guangle Li, Lei Chi

Xi’an Jiaotong University, Xi’an, China

Paper No. IMECE2009-12344, pp. 329-333; 5 pages
doi:10.1115/IMECE2009-12344
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 3: Combustion Science and Engineering
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4376-5 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

Methanol and ethanol are known as potential alcohol alternative fuels for spark ignition Engines, which can be blended with gasoline to increase oxygen content and to decrease emissions. Six kinds of fuels were prepared, which were commercial 93#gasoline, M10, M20, M30, E10 and E20. With a constant volume bomb, flame propagation speeds were studied under different temperatures, exhaust dilution and air fuel ratios. The flame radiuses were used to calculate the flame speed. The results indicate that methanol can increase flame speed no matter with or without exhaust dilution. At the ambient temperature of 5°C and 15°C, engine cold starting tests prove that methanol can improve engine combustion and lower HC and CO emissions during the first 200 seconds, while ethanol has little effects at the same conditions.

Copyright © 2009 by ASME

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