Effect of nano-particles on the performance and emission of a diesel engine using biodiesel-diesel blend

Abstract

An experimental investigation was conducted in a six-cylinder, four-stroke diesel engine to establish the effects of Multi Wall Carbon Nano Tubes (MWCNT) with the dosing levels from 2.5 to 30 ppm with the waste vegetable oil (WVO) methyl esters fuel that was produced using the transestrification process, and subsequently, the WVO methyl ester was blended with diesel fuel in the proportion of 80% of diesel and 20% biodiesel by volume (B20). The Carbon nanotubes (with nano-structure (1/3) Chiral Metal and (2/3) semiconductor zigzag particles with the length of 10 μm and diameter of 5 nm with purity rate of 95%) were blended with the biodiesel fuel. The CNTs were blended with the biodiesel with the aid of ultrasonicator. The whole investigation was conducted in the diesel engine using the following fuels: neat diesel fuel (D100), 20% biodiesel and 80% diesel by volume (B20), as well as B20 and CNT blended fuels accordingly. The experimental results revealed a considerable enhancement in the performance parameters for the CNT blended biodiesel fuels compared to the neat biodiesel and neat diesel fuel (power increased up to 17%, torque increased 18%, bsfc decreased 38.5%). Emission parameters for the CNT blended decreased compared to neat diesel and neat biodiesel fuels (HC decreased up to 22%, CO emission decreased 14%). CNT nano-additives are considered as a propitious fuel-borne catalyst to improve the fuel properties, owing to their enhanced surface area/volume ratio, quick evaporation and shorter ignition delay characteristics that help to improve the performance parameters of engine and decrease emissions.

Performance and emission characteristics of micro gas turbine engine fuelled with bioethanol-diesel-biodiesel blends

“…The reproducibility, nontoxicity, and sulphur-free property of biodiesel have generated a lot of research interest. The primary focus has been on the use of biodiesel in diesel engines [1][2][3][8][9][10][11]. The compatible physiochemical properties of biodiesel to diesel fuel have allowed up to 20% blending of biodiesel with petroleum diesel for the application in diesel engines without any modification [12][13][14][15][16][17].…”

Performance and emission characteristics of compression ignition engine using methyl ester blends of jatropha and fish oil

“…Augmented regulations on particulate matter and NOx, and also issues raised on greenhouse gas emission like CO2 are the reasons for demanding research work on bio-fuels all over the world [3][4][5][6]. Biodiesel derived from the trans-esterification of fats and oils [7][8][9][10][11] is a possible fuel for diesel engines. The properties of this fuel is comparable to that of diesel and can be used directly to run existing diesel engines or as a blend with crude oil diesel [12].…”

“…Biodiesel has low sulphur content, low aromatic content and oxygen containing compounds due to which the emissions of SO2, CO2, HC and PM are reduced. Besides, it has good ignition ability in engine owing to its high cetane number compared to that of conventional diesel fuel [10,[18][19][20][21][22][23].…”

The effect of oxygen content in soapnut biodiesel-diesel blends on performance of a diesel engine

“…These features lead to an advance in start of fuel injection and a short ignition delay [23,24]. On the other hand, the major disadvantage of biodiesel is its higher viscosity [7,[25][26][27][28][29]. Higher biodiesel viscosity leads to pumping issues, poor atomization, poor cold-flow properties, coking of injectors, plugging of filters, increased carbon deposits on piston head, etc.…”