Performance and emission characteristics of a high-compression-ratio diesel engine fueled with wood pyrolysis oil-butanol blended fuels

摘要: Abstract WPO (Wood pyrolysis oil) has the potential to replace a considerable volume of conventional fossil fuels. However, application in diesel engine is constrained because its poor properties, including low cetane number, high water content, and viscosity. In this study, two strategies are adopted facilitate use compression ignition engine. First, properties enhanced by introducing n-butanol improvers as additives. Blending with effectively reduces viscosity proper level for engines while suppressing polymerization, which would otherwise spontaneously produce gummy polymers. The combination maintains percentage biomass-derived fuels final blends at 75 wt%. auto-ignitability WPO-butanol blended fuel improved addition boosters, PEG 400 (polyethylene glycol 400) 2-EHN (2-ethylhexyl nitrate). Second, ratio increased 25 from 17.1 secure stable combustion creating in-cylinder temperature conditions. Experimental results show that characteristics obtained WPO-blended maximum content 30 wt%. produces more hydrocarbon carbon monoxide emissions than over most load range. nitrogen oxides particulate matter 30 wt% (Blend D) similar or lower than those entire range IMEP (indicated mean effective pressures), 0.2–0.8 MPa.