Impacts of Acetone–Butanol–Ethanol (ABE) ratio on spray and combustion characteristics of ABE–diesel blends

摘要: Abstract Acetone–Butanol–Ethanol (ABE), the intermediate product while producing bio-butanol, has been proposed to be used as an alternative fuel directly reduce butanol recovery/separation costs. It is important understand how ABE ratio influences combustion process because of large differences in physical and chemical properties between components diesel. Therefore, a wide range ratios (0%, 20%, 50%, 80% volume referred D100, ABE20, ABE50 ABE80 respectively) were blended with diesel combusted constant chamber under various ambient temperatures (1200 K, 1000 K, 800 K) oxygen concentrations (21%, 16%, 11%). Mie scattering images liquid spray broadband flame luminosity captured by high speed camera coupled copper vapor laser beam light source. The results show that ABE20 exhibits characteristics similar those D100 ABE80. However, sprays are much shorter narrower compared ABE20. predicted there exists critical 20% 50% for ABE, beyond which blend will dominated ABE. blend, achieves ignition delay (slightly longer than D100) duration its improved performance relatively low latent heat cetane number. natural found reduced significantly increasing due fuel-borne accelerates soot oxidation along lift-off length effectively decreases equivalence region. Overall, displays neat achieving lower luminosity. Thus, could potentially increase thermal efficiency decrease emissions when applied engines.