Comparative Analysis of Plant Oil Based Fuels

Ziejewski, Mariusz; Goettler, Hans J.; Haines, Howard; Huong, Chor

doi:10.4271/952061

Cited by 13 publications

(8 citation statements)

References 11 publications

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“…The combustion duration is the time interval from the start of combustion to the end of combustion. Compared with Euro V diesel fuel, biodiesel has earlier start of combustion and shorter combustion duration which have been explained in the literature (Leung et al 2006;Tsolakis et al 2007;Yu et al 2002;Ziejewski et al 1995).…”

Section: Combustion Characteristicsmentioning

confidence: 89%

Influence of Methanol–Biodiesel Blends on the Particulate Emissions of a Direct Injection Diesel Engine

Zhu

Cheung

Zhang

et al. 2010

Aerosol Science and Technology

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In this study, Euro V diesel fuel, biodiesel, and methanolbiodiesel blends were tested in a 4-cylinder direct-injection diesel engine to investigate the combustion characteristics and particulate emissions of the diesel engine under five engine loads at the maximum torque engine speed of 1800 rpm. Compared with Euro V diesel fuel, biodiesel gives lower and earlier heat release rate. For the blended fuels, the peak heat release rate becomes higher and retarded. With regard to particulate mass concentration, biodiesel generates less than Euro V diesel fuel, while the blended fuels result in significant reduction especially at high engine loads. Compare with Euro V diesel fuel, the total particle number concentration of using biodiesel is always higher while the geometric mean diameter (GMD) of the particles is lower. With the blended fuel, the total number concentration and GMD decrease in comparison with pure biodiesel. Further analysis shows that the difference between the total number concentration of biodiesel and Euro V diesel fuel is in particles smaller than 50 nm rather than in the larger particles. The use of methanol-biodiesel blends, compared with biodiesel, could reduce the number concentration of all sizes. A comparison between the particulate mass emission and total particulate number concentration with the mass of fuel burned in the diffusion mode show that they are strongly related to each other, even for the blended fuel.

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Section: Combustion Characteristicsmentioning

confidence: 89%

Influence of Methanol–Biodiesel Blends on the Particulate Emissions of a Direct Injection Diesel Engine

Zhu

Cheung

Zhang

et al. 2010

Aerosol Science and Technology

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“…Chang and Van Gerpen [92] state that blends with saturated esters show the smallest increase in NO x emissions. Ziejewski and Goettler [119] report that differences in combustion temperature between vegetable and palm oils result from different levels of saturation between the fuels.…”

Section: Combustion Temperaturementioning

confidence: 98%

“…The iodine number is a measure of saturation, where low iodine number indicates high saturation (increased single bonds). Several studies correlate the degree of saturation to NO x emissions; highly saturated fuel molecules produce lower amounts of NO x emissions [19,28,92,98,110,119]. Biodiesel typically contains more double-bonded molecules than petroleum diesel.…”

Section: Combustion Temperaturementioning

confidence: 99%

Oxides of nitrogen emissions from biodiesel-fuelled diesel engines

Sun

Caton

Jacobs

2010

Progress in Energy and Combustion Science

330

129

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“…11 Air-fuel ratio for WCO and diesel Fig. 9 Comparison of brake thermal eYciency of WCO and diesel bustion process [16,19,20]. As explained earlier, because of the formation of lower molecular weight gases during the injection process, the spray cone angle was engines generally produce lower emission of CO, as they always run on lean mixture compared with gasoline higher for vegetable oil than for diesel.…”

Section: Introductionmentioning

confidence: 97%

“…1 Schematic diagram of experimental set-up the injection of vegetable oil at high temperature resulted in the breakdown of the unsaturated fatty acids of higher molecular weight, predominantly linoleic (C18:2) and linolenic (C18:3), to products of lower molecular weight, hitherto unidenti ed [16,19,20]. These complex chemical reactions led to the formation of gases of low molecular weight on the peripheral region with a very dense inner core of liquids of higher molecular weight [16,19]. Rapid gasi cation of this lighter oil in the fringe of the spray spread out the jet [16 ] and thus volatile combustible compounds ignited earlier and reduced the delay period.…”

Section: Introductionmentioning

confidence: 99%

A comparison of combustion characteristics of waste cooking oil with diesel as fuel in a direct injection diesel engine

Bari

Ameen

2002

Proceedings of the Institution of Mechanical Engineers, Part D:

115

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The use of waste cooking oil (WCO) as an alternative to diesel in engines has advantages from both economic and environmental standpoints. Typical of vegetable oils, WCO has a higher viscosity, leading to a general perception that its use is likely to have an adverse effect on the fuel injection system and consequent combustion process. In the present investigation, tests were carried out to determine engine performance and combustion analysis as well as emissions for both WCO and diesel. It was observed that because of the shorter ignition delay the premixed combustion phase of WCO was less intense than that of diesel. However, because of the corresponding smaller combustion volume, the peak pressures were on average 1.5 bar higher and occurred 1.1°-3.8° earlier than for diesel. This early peaking characteristic requires careful attention to ensure that, while running with WCO, the peak pressure takes place marginally after top dead centre for efficient operation. In terms of emissions of CO, NO and SO2, the level was higher for WCO compared with diesel.

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Comparative Analysis of Plant Oil Based Fuels

Cited by 13 publications

References 11 publications

Influence of Methanol–Biodiesel Blends on the Particulate Emissions of a Direct Injection Diesel Engine

Influence of Methanol–Biodiesel Blends on the Particulate Emissions of a Direct Injection Diesel Engine

Oxides of nitrogen emissions from biodiesel-fuelled diesel engines

A comparison of combustion characteristics of waste cooking oil with diesel as fuel in a direct injection diesel engine

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