Experimental comparison of acetone-n-butanol-ethanol (ABE) and isopropanol-n-butanol-ethanol (IBE) as fuel candidate in spark-ignition engine

Yuqiang Li, Yong Chen, Gang Wu, Chia fon F. Lee, Jiangwei Liu

Research output: Contribution to journalArticle

Abstract

Among primary alcohols, bio-n-butanol is considered as a promising alternative fuel candidate. However, relatively low production efficiency and high cost of component recovery from the acetone-n-butanol-ethanol (ABE) or isopropanol-n-butanol-ethanol (IBE) fermentation prevents bio-n-butanol's use in modern engines. Therefore, the purpose of this study is to compare the potential of ABE and IBE as fuel candidate in spark ignition (SI) engine. The combustion, performance and emissions characteristics of the engine without any modifications fueled with ABE- and IBE-gasoline blends were investigated. It was found that IBE-gasoline blends showed an advanced combustion phasing with a shorter initial and major combustion duration compared to gasoline and ABE-gasoline blends. In comparison with ABE10 (10 vol% ABE blended with gasoline) under various lambda from 0.8 to 1.2 and engine loads of 3 and 5 bar BMEP, IBE10 enhanced brake thermal efficiency by 0.9–1.8% and reduced carbon monoxide, unburned hydrocarbons and nitrogen oxides emissions by 0.9–7.3%, 3.3–25.1% and 1.6–5.9%, respectively. Due to the greater potential to increase energy efficiency and reduce pollutant emissions and more desired properties (less corrosive to the engine parts, higher energy content and octane number, etc.), IBE seems to be more attractive than ABE for fuel application in SI engine.

Original languageEnglish (US)
Pages (from-to)179-187
Number of pages9
JournalApplied Thermal Engineering
Volume133
DOIs
StatePublished - Mar 25 2018

Keywords

  • Acetone-n-butanol-ethanol
  • Combustion
  • Emissions
  • Isopropanol-n-butanol-ethanol
  • Performance
  • Spark ignition engine

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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