Investigation of the Performance and Emission Characteristics of Biodiesel Fuel Containing Butanol under the Conditions of Diesel Engine Operation

Abstract

To expand the raw materials base for the production of biodiesel fuel, it is advantageous to make use of biobutanol (B) produced from renewable resources, which can be used in two ways as fuel for diesel engines: by direct inclusion into multicomponent fuel for diesel engines or by producing fatty acid butyl esters from rapeseed oil. Multicomponent fuels D70/B30, D70/B15/RME(RBE)15, and D50/B25/RME(RBE)25 meet the standards for fossil diesel fuel (D) and biodiesel fuel in terms of the main indicators of quality. When 30% biocomponents are included in a mixture with fossil diesel fuel, the effective efficiency factor of the engine (ηe) is as high as that of pure fossil diesel fuel, and reductions are achieved in the emission of all harmful components (CO, HC, NO x , and BSN). Usage of a such mixture is more promising if compared with a mixture containing higher content of biocomponents. Increase of biocomponents to 50% causes an increase in ηe of up to 4% compared to that of fossil diesel fuel, reduction in emissions of CO and BSN, and little change in the level of NO x and HC emissions. Also, the three-component fuel containing rapeseed butyl esters has better qualities than fuel containing rapeseed methyl esters. The introduction of biobutanol in three-component mixture instead of ethanol is more promising due to the better performance and environmental characteristics of the fuel.

Feasibility of using less viscous and lower cetane (LVLC) fuels in a diesel engine: A review

“…In addition to alcohol-diesel blends, there were also attempts to use alcohol-biodiesel-diesel blends in diesel engine. Since the summary of alcohol-biodiesel [85,107,[120][121][122][123][124][125][126][127][128][129][130][131][132][133] and alcohol-biodiesel-diesel blends [84,89,95, has not been unraveled thus far, data pertaining to their engine characteristics has been outlined in Table 3.…”

Comparison of Performance and Combustion Parameters in a Heavy-Duty Diesel Engine Fueled with Iso-Butanol/Diesel Fuel Blends

“…The density of iso-butanol improves its energy density. Another important feature of iso-butanol is less sensitivity to water than ethanol, which tends to settle in layers when water is present (Lebedevas et al, 2010). The stoichiometric airfuel ratio of iso-butanol is lower than diesel, due to its oxygen content (Vertes et al, 2010).…”

Evaluation of n-butanol as an oxygenated additive to improve combustion-emission-performance characteristics of a diesel engine fuelled with a diesel-calophyllum inophyllum biodiesel blend

“…AL15B5 and AL10B10 reduced the CO emission than AL20 about 19% and 26%, respectively because of more oxygen content. 35 Therefore, lower density and viscosity of the modied blends improved spray atomization and reduced fuel rich regions. On top of that higher oxygen content surely assisted complete oxidation of the fuels and reduced CO emission.…”

“…Altun et al 34 studied the effect of n-butanol on cottonseed biodiesel-diesel blend and reported that, emissions of NO x , HC and CO reduced in expense of higher BSFC. Lebedevas et al 35 investigated with butyl esters of rapeseed oil-diesel blend with the addition of 15-25% n-butanol and observed development on emission characteristics and overall efficiency. Mehta et al 36 added variable percentage of n-butanol with jatropha biodiesel-diesel blend and reported signicant drop in CO and NO emissions in expense of lower performance.…”