Influence of alumina nanoparticles, ethanol and isopropanol blend as additive with diesel–soybean biodiesel blend fuel: Combustion, engine performance and emissions

Abstract

a b s t r a c tExperimental investigation was carried out to study the combustion, engine performance and emission characteristics of a single cylinder, naturally aspirated, air cooled, constant speed compression ignition engine, fuelled with two modified fuel blends, B20 (Dieselesoybean biodiesel) and dieselesoybean biodieseleethanol blends, with alumina as a nanoadditive (D80SBD15E4S1 þ alumina), and the results are compared with those of neat diesel. The nanoadditive was mixed in the fuel blend along with a suitable surfactant by means of an ultrasonicator, to achieve stable suspension. The properties of B20, D80SBD15E4S1 þ alumina fuel blend are changed due to the mixing of soybean biodiesel and the incorporation of the alumina nanoadditives. Some of the measured properties are compared with those of neat diesel, and presented. The cylinder pressure during the combustion and the heat release rate, are higher in the D80SBD15E4S1 þ alumina fuel blend, compared to neat diesel. Further, the exhaust gas temperature is reduced in the case of the D80SBD15E4S1 þ alumina fuel blend, which shows that higher temperature difference prevailing during the expansion stroke could be the major reason for the higher brake thermal efficiency in the case of D80SBD15E4S1 þ alumina fuel blend. The presence of oxygen in the soybean biodiesel, and the better mixing capabilities of the nanoparticles, reduce the CO and UBHC appreciably, though there is a small increase in NO x at full load condition.

The Effects of Nano Additives on Performance and Emission Characteristics of A VCR Diesel Engine Fuelled with Diesel-Water Emulsion

“…Use of nano-additivesis a new technology that improves the ignition delay period, calorific value and emission characteristics of the diesel engine [15]. An inclusion of nanoparticles, especially nano metal oxides acts as a catalyst in the combustion process which helps in enhancing the combustion characteristics that improves the performance and emission characteristics of the engine [16]. Nanoparticles have high surface area to volume ratio that improves the contact between fuel and oxidizer, furthermore nanoparticles are high energy density additives that causes an increase in the calorific value of the fuel.…”

“…Mina Mehregan et al numerically investigated on combustion characteristics of ethanol and n-decane liquid fuels blended with nano aluminium. It has been observed that the reduction in flame temperature, droplet evaporation rate and improved radiation by adding nano aluminium compared to pure ethanol and ndecane [16]. J. Sadhik Basha et al carried out an investigation on the effect of alumina nanoparticles blended with biodiesel water emulsion on the performance, combustion and emission characteristics of a diesel engine.…”

Effect of using plastic nanofuel as a fuel in a light‐duty diesel engine

“…As observed from Table , the calorific value is increased with AON addition which acts as the influential parameter for the higher rate of heat release by nanofuels. The oxygen available in alumina leads to complete combustion because of the enhanced combustion rate, which is the main impact of adding nanoalumina to the fuel . Another reason is the improved ignition quality due to the increase in the cetane number of the nanofuel.…”

Performance Analysis of Direct Injection Diesel Engine Fueled with Diesel-Tomato Seed Oil Biodiesel Blending by ANOVA and ANN

“…The highest power increase is related to B5 at 2500 rpm in which power increases by 15%. This is due to incomplete filling of the cylinder during the intake stroke at higher speeds although the valves are fully open [24][25][26][27]. There is not enough time for air intake and subsequently raising the cylinder pressure, which leads to the reduction of combustion pressure.…”