Performance and combustion characteristics of a compression ignition engine running on diesel-biodiesel-ethanol (DBE) blends – Potential as diesel fuel substitute on an Euro III engine

Florian Pradelle, Sergio Leal Braga, Ana Rosa Fonseca de Aguiar Martins, Franck Turkovics and Renata Nohra Chaar Pradelle

Renewable Energy, 2019, vol. 136, issue C, 586-598

Abstract: Experimental tests on an Euro III compression ignition engine were performed with blends of diesel B15 fuel with ethanol (0–20 vol%) and 1 vol% of an original additive, defined as a mixture of 72.5 vol% of castor oil, 17.5 vol% of soybean biodiesel and 10 vol% of n-butanol. Such mixtures were compared to commercial diesel B7 E0 fuel. The results showed that the addition of ethanol implied an increase of the ignition delay, a faster heat release and a decrease of maximum pressure. Without any optimization of injection timing and combustion, results showed a better conversion of ethanol chemical energy into brake power, when compared with a commercial flex fuel spark ignition engine. In addition, a small increase in the indicated efficiency, in particular at low loads (25% of the maximum torque obtained with commercial fuel under the same rotation), was also observed. Specific fuel consumption increased almost 2% for each 5 vol% of anhydrous ethanol in the blends since the density and the lower heating value of the fuel decreased. A significant decrease of maximum torque was also observed, due to a reduction of the injected volume of fuel (up to 30% in diesel B15 E20 fuel).

Keywords: Diesel-biodiesel-ethanol blends; Compression ignition engines; Performance; Combustion (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:136:y:2019:i:c:p:586-598

DOI: 10.1016/j.renene.2019.01.025

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