Experimental investigation of biodiesel-n-butanol fuels blends on performance and emissions in a diesel engine

The paper presents the experimental test results reflecting comparative changes in performance efficiency and emissions of exhaust a naturally aspirated, four-stroke, single-cylinder, air-cooled diesel engine due to its transition from neat rapeseed oil biodiesel fuel blends prepared by mixing various proportion (by volume) methyl ester (B) butanol (Bu). lubricity properties biodiesel-n-butanol were studied using HFRR method. In contrast previous works, undertaken investigation is performed with totally renewable, binary liquid biofuel blends. purpose research reduce simultaneously production NOx smoke respect potentially improved homogeneity combustible mixture particulate matter benefits suggested higher oxygen content (21.62wt%) relatively lower carbon-to-hydrogen ratio (4.8) normal n-butanol. tests revealed that brake specific consumption for always than produces under same loading conditions. Maximum nitrogen oxide (NOx) obtained running on (2290 ppm). At full (100%) load conditions, lowest emission was BBu20 blend. level carbon monoxide (CO) observed, when most butanol-oxygenated blend BBu20.The highest opacity fuelled at load.