Browsing by Author "Degife , Yohannes"

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    Investigation The Effect Of Alternative Additive Mixed Castor And Cottonseed Oil On The Lubricity Of Diesel Fuels.
    (FTVETI, 2023-01-16) Degife , Yohannes
    Fuel additives are used worldwide for a variety of applications including fuel efficiency increase, emission reduction, and modifying storage/handling properties among others. Because of the high percentage of global diesel fuel consumption and its impacts on internal combustion engines, various investigations are being conducted around fuel additives that increase the efficiency of diesel fuel-powered internal combustion engines in terms of diesel fuel consumption, wear, lubricity, and greenhouse gas emissions. In this research, the effect of castor bean and cotton seed oil (CBO/CSO) as an additive to diesel fuel and its tribological behavior in terms of engine performance and efficiency and greenhouse emissions has been experimentally investigated, and ANOVA and Pareto chart is used to support the research and optimize the acquired data in spell out the level of influence of castor bean and cotton seed oil from other parameters. To this effect as starting point characterization of diesel fuel used in Ethiopia and the castor bean and cotton seed oil has been conducted separately. At the same time, an extensive literature survey has been conducted in search of the optimum percentage of castor bean and cotton seed oil to be added to the diesel fuel that does not affect the essential characteristics of normal diesel oil. Consequently, using the diesel oil tribological behavior as benchmark samples of blends with 0.5% (5ml Castor bean and cotton seed oil 995ml Diesel fuel), 0.75% (7.5ml castor bean and cotton seed oil 992.5ml Diesel fuel) and 1% (10ml castor bean and cotton seed oil 990ml Diesel fuel) As the result, a cotton seed and caster bean oil additive of 1% has shown enhanced tribological properties over normal diesel fuel. Moreover, experimental evaluations on performance, combustion, and emissions characteristics have been conducted using a computer-aided performance test and finally, the blend of 1% cotton seed and caster bean oil has shown superior characteristics in terms of wear, lubricity, and reduction of carbon monoxide and hydrocarbon emissions as compared with normal diesel oil.