The present research, utilised only renewable oil samples to reduce atmospheric pollution and also to decrease our reliance on fossil oil products and provide a direction towards alternative fuel usage in diesel engines. On a 1-cylinder, naturally aspirated, water-cooled, 4S, CI diesel engine, the tests have been conducted as to create comparative results of performance-emission characteristics in between the blends of conventional diesel, biodiesel thumba, biodiesel polanga and ethanol fuel. With the following blends, the diesel engine has been tested as such: diesel fuel (D100) (v/v), thumba biodiesel 100% (T100) (v/v), polanga biodiesel 30% with addition of diesel 70% (P30) (v/v), and ethanol 10% with addition of diesel 90% (E10) (v/v). The engine performance parameters: BTE of E10 and P30 blend was incremented than the diesel fuel, while the blends T100 was close enough to diesel fuel as well; whereas, BSFC data of E10 blend was the lowest in between the others samples and for T100 and P30 also it decreased. The emission values for CO, NOx and UHC of the blend samples was less than diesel fuel. The maximum CO2 emission was released by D100 and least by P30 fuel blend, whereas, the unused O2 released was the reverse. The effects of direct inhalation of biofuel blends in IC engine were analysed properly and in near future this alternative oil can be applied in our society.
Diesel engine, biodiesel polanga and thumba, ethanol, emissions, performance
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