Auto-ignition Characteristics of Biofuel Blends for SI Engines

Paper #:
  • 2011-01-1989

Published:
  • 2011-08-30
Citation:
Ohtomo, M., Nishikawa, K., Suzuoki, T., Miyagawa, H. et al., "Auto-ignition Characteristics of Biofuel Blends for SI Engines," SAE Technical Paper 2011-01-1989, 2011, https://doi.org/10.4271/2011-01-1989.
Pages:
11
Abstract:
Furans such as 2-Methylfuran (2-MF) and 2,5-Dimethylfuran (DMF) can be produced from biomass sugars and offer superior properties for use in SI engines. This paper describes the study of the auto-ignition characteristics of furans and other biofuels using a rapid compression machine. Blending with PRF90 and RG, the auto-ignition suppression of 2-MF was almost equal to that of ethanol and larger than toluene, although the auto-ignition delay of pure 2-MF was shorter than that of ethanol and toluene. This was because 2-MF suppresses the cool flame reaction. Knock evaluation using a single-cylinder research engine also indicated that the addition of 2-MF improved the anti-knock properties as well as ethanol.
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