Development and validation of a reduced chemical kinetic model for used vegetable oil biodiesel/1-Hexanol blend for engine application

Thomas, John J.; Manojkumar, C.V.; Sabu, V.R.; Nagarajan, G.

doi:10.1016/j.fuel.2020.117780

Cited by 27 publications

(12 citation statements)

References 49 publications

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“…The carbon residue of Handal biodiesel (0.5%) was also higher than that of coconut biodiesel (0.03%) but lower than that of soybean biodiesel (1.7%). The heating value of vegetable oil (39 MJ/Kg) was slightly higher than that of coconut biodiesel (36.6 MJ/Kg) from a different study [56,57].…”

Section: The Significant Physical Characteristics Of Handal Oils Shown Inmentioning

confidence: 65%

Spatio-temporal analyses of extracted citrullus colocynthis seeds (Handal seed oil) as biofuel in internal combustion engine

et al. 2020

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Herein Handal oil extraction from waste biomass is investigated for biodiesel production via esterification and transesterification processes. Furthermore, the physicochemical characteristics of Handal biodiesel (density, kinematic viscosity, specific gravity, pour point, flash point, and cloud point) was performed along with testing the fuel quality used in internal combustion engines. The flash point of the obtained Handal biodiesel (49.5 °C) was lower than that of petroleum diesel (68.3 °C). While at 40 °C, the kinematic viscosity of used Handal oil (4.476 cSt), which was higher than that of diesel fuel (2.6 cSt) and fossil diesel (2.27 cSt). Pourpoint of the used Handal oil was -9 and lower than that of Handal biodiesel, which is +3.The sulfur content of Handal oils was 193 mg/kg, which was higher than the Handal biodiesel value of 62 mg/kg, but significantly lower than that of diesel fuels (≤100 ppm). Similar engine performance regarding thermal efficiency between pure diesel and biodiesel at different engine speeds and loads was detected. The utilisation of such waste stream (Handal wild plant) in the production of biodiesel fuel will aid upcycling an otherwise waste and problematic thermochemical conversion feedstock by adding value for the application in the energy sector.

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Section: The Significant Physical Characteristics Of Handal Oils Shown Inmentioning

confidence: 65%

Spatio-temporal analyses of extracted citrullus colocynthis seeds (Handal seed oil) as biofuel in internal combustion engine

et al. 2020

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“…Higher viscosity affects the fuel spray characteristics such as atomization and evaporation, whereas low CN causes a delay in the SoC. These effects led to an increased ID period (Figure 3) [26]. At full engine load, in-cylinder temperature was higher, which improved the fuel evaporisation and air/fuel mixing rate to make a combustible mixture.…”

Section: The Rate Of Pressure Risementioning

confidence: 99%

“…CO formation is also influenced by fuel parameters such as density, viscosity, and CN [18,35]. Spray penetration, atomization, and dispersion of high droplet size are all affected by viscosity [26,35]. Because of the larger fuel droplet size and low injection pressure, incomplete combustion occurred, resulting in increased CO emissions [26].…”

Section: Exhaust Gas Emissionsmentioning

confidence: 99%

“…Spray penetration, atomization, and dispersion of high droplet size are all affected by viscosity [26,35]. Because of the larger fuel droplet size and low injection pressure, incomplete combustion occurred, resulting in increased CO emissions [26]. An incomplete combustion causes the formation of CO emission, because of the lower oxidation temperature and residence time required for CO2 conversion [33].…”

Section: Exhaust Gas Emissionsmentioning

confidence: 99%

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Experimental Investigation of Neat Biodiesels’ Saturation Level on Combustion and Emission Characteristics in a CI Engine

2021

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The fuel qualities of several biodiesels containing highly saturated, mono, and poly unsaturated fatty acids, as well as their combustion and exhaust emission characteristics, were studied. Six biodiesel samples were divided into two groups based on their fatty acid composition, including group 1 (coconut, castor, and jatropha) and group II (palm, karanja, and waste cooking oil biodiesel). All fuels (in both groups) were tested in a single-cylinder off-road diesel engine. Castor and karanja biodiesel, both rich in mono-unsaturation level, have a high viscosity of about 14.5 and 5.04 mm2/s, respectively. The coconut and palm biodiesels are rich in saturation level with cetane numbers of 62 and 60, respectively. In both groups, highly saturated and poly-unsaturated methyl esters presented better combustion efficiency and less formation of polluted emissions than mono-unsaturation. At full load, coconut and palm biodiesel displayed 38% and 10% advanced start of combustion, respectively, which reduced ignition delay by approximately 10% and 3%, respectively. Mono-unsaturated methyl esters exhibited a higher cylinder pressure and heat release rate, which results in higher NOx gas emissions. The group II biodiesels showed about 10–15% lower exhaust emissions owing to an optimum level of fatty acid composition. Our study concluded that highly saturated and poly-unsaturated fatty acid performed better than mono-unsaturated biodiesels for off-road engine application.

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“…Another reason for the preferred application of biodiesel for RCCI experiments is the presence of oxygen in it, which promotes soot oxidation, leading to a further reduction of particulate emissions. 32 Two efficient methods for using EGR are residual gas trapping through negative valve timing and external rebreathing. Higher fractions of cold EGR are used to achieve longer ignition delay and NO X reduction by effectively mixing and lowering the in-cylinder combustion temperature.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the effects of multiple injections and EGR on n-pentanol–biodiesel fuelled RCCI engine

2020

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Development and validation of a reduced chemical kinetic model for used vegetable oil biodiesel/1-Hexanol blend for engine application

Cited by 27 publications

References 49 publications

Spatio-temporal analyses of extracted citrullus colocynthis seeds (Handal seed oil) as biofuel in internal combustion engine

Spatio-temporal analyses of extracted citrullus colocynthis seeds (Handal seed oil) as biofuel in internal combustion engine

Experimental Investigation of Neat Biodiesels’ Saturation Level on Combustion and Emission Characteristics in a CI Engine

Experimental investigation on the effects of multiple injections and EGR on n-pentanol–biodiesel fuelled RCCI engine

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