An Experimental Study on the Atomization and Combustion Characteristics of Biodiesel-Blended Fuels

Lee, Chang Sik; Park, and Sung Wook; Kwon, Sangil

doi:10.1021/ef050026h

Cited by 304 publications

(172 citation statements)

References 14 publications

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“…Waste cooking biodiesel appears to have the expected effect on torque, as the higher biodiesel content consistently results in a lower maximum torque. By comparing Figure 2 and Figure 3, it is evident that the maximum torque and power reflect each other, which is expected as torque and power are directly related [51]. The total torque output decreases gradually with the increase of biodiesel blends [52].…”

Section: Resultsmentioning

confidence: 65%

Comparative study of diesel engine performance and emission with soybean and waste oil biodiesel fuels

Azad¹,

Rasul²,

Giannangelo³

et al. 2015

Int. J. Automot. Mech. Eng.

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The study investigated the engine performance and emission using biodiesel from soybean oil and waste cooking oil. The fuel properties of these biodiesels were determined using ASTM D6751and EN 14214 standards. The fuels were tested in a multi-cylinder diesel engine with an electromagnetic dynamometer and a 5-gas analyser was used for emission analysis. The result shows that the thermal performance of the engine slightly decreases with increase of the biodiesel blends ratio (i.e. B5, B10, B15, B20 and B50). On the other hand, emission decreases with the increase of biodiesel blends. The reduction in emissions was different for both biodiesels. Waste oil biodiesel showed better trends of emissions reduction with increase of the biodiesel percentage compared with soybean biodiesel. The brake specific fuel consumption (BSFC) of both biodiesels is (6.05%, 9.13%, 12.36% and 18.57% for soybean) and (8.17%, 11.40%, 17.71% and 14.96% for waste cooking oil) higher than diesel, respectively. However, soybean biodiesel consumed less fuel and produced more power and torque compared to waste oil biodiesel. The study concluded that B10 soybean biodiesel blend produced more consistent and expected results than waste oil biodiesel from the performance and emission point of view.

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Section: Resultsmentioning

confidence: 65%

Comparative study of diesel engine performance and emission with soybean and waste oil biodiesel fuels

Azad¹,

Rasul²,

Giannangelo³

et al. 2015

Int. J. Automot. Mech. Eng.

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“…A possible explanation of this phenomenon could be related to the atomization efficiency. Lee et al [28] and Kamraket al [29] have observed that the Sauter Mean Diameter (SMD) of droplets is significantly higher for biodiesel fuels, probably due to their higher surface tension.…”

Section: Spray Visualizationmentioning

confidence: 99%

Consequences of using biodiesel on the injection and air–fuel mixing processes in diesel engines

Salvador

Ruíz

Salavert

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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A study of the injection process and spray behavior has been made for three different fuels. In particular, blends of rapeseed methyl ester (RME) with standard diesel fuel at 5% and 30% of biodiesel have been used for the current study, as well as pure RME.Hydraulic characterization of an 8-hole nozzle has been carried out using these three fuels, in order to explore and analyze the influence of fuel properties on mass flow rate and momentum flux at the nozzle exit. Additionally, spray visualization tests have been made in order to get information about spray cone angle, which allows the characterization of air-fuel mixing process. Finally, a theoretical derivation has been used to obtain further details of the microscopic characteristics of the spray and compare air-fuel mixing efficiency for the different biodiesel blends.

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“…Biodiesel showed higher spray tip penetration and velocity, but narrower spray angles, and the ambient pressure had a more significant effect on spray angle while injection pressure showed no contribution. Lee et al [21] investigated the effect of the biodiesel mixing ratio on the atomization and combustion characteristics using a common-rail engine system, and found that due to the higher viscosity and surface tension of the biodiesel than conventional diesel fuel, the mean size of the droplets increased as the ratio of biodiesel in the blends became higher. However, spray tip penetration was little influenced by the biodiesel mixing ratio.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Macroscopic Spray Characteristics of Biodiesel and Diesel in a Constant Volume Chamber

et al. 2015

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Abstract:The objective of this study was to investigate the macroscopic spray characteristics of different 0%-100% blends of biodiesel derived from drainage oil and diesel (BD0, BD20, BD50, BD80, BD100), such as spray tip penetration, average tip velocity at penetration, spray angle, average spray angle, spray evolution process, spray area and spray volume under different injection pressures (60, 70, 80, 90, 100 MPa) and ambient pressures (0.1, 0.3, 0.5, 0.7, 0.9 MPa) using a common rail system equipped with a constant volume chamber. The characteristic data was extracted from spray images grabbed by a high speed visualization system. The results showed that the ambient pressure and injection pressure had significant effects on the spray characteristics. As the ambient pressure increased, the spray angle increased, while the spray tip penetration and the peak of average tip velocity decreased. As the injection pressure increased, the spray tip penetration, spray angle, spray area and spray volume increased. The increasing blend ratio of biodiesel brought about a shorter spray tip penetration and a smaller spray angle compared with those of diesel. This is due to the comparatively higher viscosity and surface tension of biodiesel, which enhanced the friction effect between fuel and the injector nozzle surface and inhibited the breakup of the liquid jet.

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An Experimental Study on the Atomization and Combustion Characteristics of Biodiesel-Blended Fuels

Cited by 304 publications

References 14 publications

Comparative study of diesel engine performance and emission with soybean and waste oil biodiesel fuels

Comparative study of diesel engine performance and emission with soybean and waste oil biodiesel fuels

Consequences of using biodiesel on the injection and air–fuel mixing processes in diesel engines

An Experimental Study on the Macroscopic Spray Characteristics of Biodiesel and Diesel in a Constant Volume Chamber

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