Abstract
Transport vehicles greatly pollute the environment through emissions such as CO, CO2 , NOX, SOX, unburnt or partially burnt HC and particulate emissions. Fossil fuels are the chief contributors to urban air pollution and major source of Green House Gases (GHGs) and considered to be the prime cause behind the global climate change. Though diesel fuelled compression ignition engine can operate at high thermal efficiency creates more emission of HC and CO, the high level of NOX poses problems. The high combustion temperature and lean mixtures used are the reasons. This paper presents the results of performance and emission analyses carried out in an unmodified diesel engine fuelled with Tamanu Methyl Ester (TME), DiEthyl Ether (DEE) its blends with diesel. Engine tests have been conducted to get the comparative measures of Brake Specific Fuel Consumption (BSFC), Brake Thermal Efficiency (BTE) and emissions such as HC, CO, NOX and Exhaust gas temperature to evaluate the behaviour of TME, DEE and diesel in varying proportions. The results reveal that blends of TME, DEE with diesel up to 20% and 20% by volume provide better engine performance (BSFC and BTE) increased up to 3-4% and the exhaust emission gets decreased dramatically. Keywords: C.I. Engine, Diethyl Ether, Exhaust Emission, Performance
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