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    Study of performance, combustion and emission characteristics of a common rail diesel engine with tea tree oil-diglyme blends

    Year: 2019

    Journal: Energy, Volume 180, AUG 1, page 216–228

    Authors: Nabi, M. N.; Rasul, M. G.; Rahman, S. M. A.; Dowell, Ashley; Ristovski, Z. D.; Brown, R. J.

    Organizations: Central Queensland University's Merit Grant [RSH/4578]

    Keywords: Diesel engine; Tea tree oil; Diglyme; Particulate number; Particulate mass emissions

    This investigation explored engine performance, combustion and exhaust emissions with a new series of fuels for compression ignition engine. Three blends were formulated using diesel, tea tree oil and diethylene glycol dimethyl ether (DGM). Low grade tea tree oil is considered as waste, which was used as fuel in this investigation. DGM was blended with tea tree oil and diesel as an additive for its high oxygen content and cetane number. Diesel was chosen for comparison purposes. The three blends examined in this study were, 70-30-0, 70-20-10 and 70-10-20 in ratios of diesel-tea tree oil-DGM. A six-cylinder, four-stroke, turbocharged diesel engine was used in this experiment. Four different loads of 25%, 50%, 75%, 100% and 1500 revolutions per minute (rpm) were selected for the experiments. Engine performance parameters like efficiency, power, mean effective pressure and specific fuel consumption were considered. In-cylinder pressure, the rate of heat release, peak and boost pressure were considered for combustion parameters. Carbon monoxide (CO), nitrogen oxides (NOx), particulate matter (PM) and particulate number (PN) were considered for emission parameters. A maximum of 70% PM, 54% PN and 33% CO reductions were observed with three blends. However, 16% higher NOx emissions were observed with the blends. (C) 2019 Elsevier Ltd. All rights reserved.
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