The influence of molecular structure of fatty acid monoalkyl esters on diesel combustion

Schönborn, Alessandro; Ladommatos, Nicos; Williams, John; Allan, Robert; Rogerson, John

doi:10.1016/j.combustflame.2009.03.011

Cited by 220 publications

(178 citation statements)

References 35 publications

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“…The composition of the fuel was 0.1% C 14 , 5.4% C 16 , 92.0% C 18 , 2.0%C 20 and 0.5% C 22 , with mostly one double bond on the acid chain." Schönborn et al [9] list similar but not exactly the same fractions, and Van 27 Gerpen et al [63] from the US National Renewable Energy Laboratory reported C16:0 (4.3%), C18:0 (1.3%), C18:1 (59.9%), C18:2 (21.1%) and C18:3 (13.2%). We have used these values from Van Gerpen et al for our RME surrogate to simulate the experimental results of Dagaut et al…”

Section: Model Validationsmentioning

confidence: 92%

“…Hakka et al [47] examined oxidation of mixtures of n-decane and methyl palmitate (at a ratio of 74/26 in the fuel) in a jet-stirred reactor at temperatures from 500K to 1100K, 9 observing a pronounced NTC region extending from about 600K to 750K, with a conventional reaction region for temperatures above about 800K. Bax et al [48] reported similar results of JSR experiments for mixtures of n-decane and methyl oleate with the same fuel ratio of 74/26, again observing a strong NTC region over the temperature range of 600K to 750K.…”

Section: Previous Studiesmentioning

confidence: 99%

“…Fortunately, both laboratory experiments and kinetic models have begun to emerge very recently as these limitations have 7 found new solutions. In addition, single-cylinder engine studies of combustion of biodiesel fuels are being used [9][10][11][12] to evaluate the performance characteristics of these fuels.…”

Section: Previous Studiesmentioning

confidence: 99%

“…The same 5 methyl esters are the major constituents of palm oil, jatropha oil, corn oil, cottonseed oil, linseed oil, safflower oil, 6 sunflower oil, and tallow methyl ester fuels, although each of these fuels has unique fractions of each of the 5 components [1,9]. Although the present study is focused on two particular mixtures of these 5 components in RME and SME, the present kinetic reaction mechanism is equally valid for these other methyl ester fuels, simply by specifying different initial amounts of each of the 5 components as initial conditions for a computation, based on the compositions of the methyl ester fuel to be studied.…”

Section: Introductionmentioning

confidence: 99%

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Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels

Westbrook

Naik²,

Herbinet³

et al. 2011

Combustion and Flame

240

184

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A detailed chemical kinetic reaction mechanism is developed for the five major components of soy biodiesel and rapeseed biodiesel fuels. These components, methyl stearate, methyl oleate, methyl linoleate, methyl linolenate, and methyl palmitate, are large methyl ester molecules, some with carbon-carbon double bonds, and kinetic mechanisms for them as a family of fuels have not previously been available. Of particular importance in these mechanisms are models for alkylperoxy radical isomerization reactions in which a C=C double bond is embedded in the transition state ring. The resulting kinetic model is validated through comparisons between predicted results and a relatively small experimental literature. The model is also used in simulations of biodiesel oxidation in jet-stirred reactor and intermediate shock tube ignition and oxidation conditions to demonstrate the capabilities and limitations of these mechanisms.Differences in combustion properties between the two biodiesel fuels, derived from soy and rapeseed oils, are traced to the differences in the relative amounts of the same five methyl ester components. † Lawrence

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Section: Model Validationsmentioning

confidence: 92%

Section: Previous Studiesmentioning

confidence: 99%

Section: Previous Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels

Westbrook

Naik²,

Herbinet³

et al. 2011

Combustion and Flame

240

184

View full text Add to dashboard Cite

show abstract

“…The following biodiesel fuels are used in our analysis: Palm Methyl Ester (PME) produced from palm oil [27], Hemp Methyl Esters, produced from hemp seed oil in the Ukraine (HME1) [24] and European Union (HME2) [28], Rapeseed oil Methyl Ester (RME) [5], produced from rapeseed oil in the Ukraine, and Soybean oil Methyl Ester (SME) produced from soybean oil [29]. Molar fractions of components (pure methyl esters) of these fuels are shown in Table A1.…”

Section: Appendix 1 Composition Of Biodiesel Fuelsmentioning

confidence: 99%

Modelling of biodiesel fuel droplet heating and evaporation

Sazhin

Qubeissi

Kolodnytska

et al. 2014

Fuel

112

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Biodiesel fuel droplet heating and evaporation is investigated using the previously developed models, taking into account temperature gradient, recirculation, and species diffusion within droplets. The analysis is focused on four types of biodiesel fuels: Palm Methyl Ester, Hemp Methyl Esters, Rapeseed oil Methyl Ester, and Soybean oil Methyl Ester. These fuels contain up to 15 various methyl esters and possibly small amounts of unspecified additives, which are treated as methyl esters with some average characteristics. Calculations are performed using two approaches: 1) taking into account the contribution of all components of biodiesel fuels (up to 16); and 2) assuming that these fuels can be treated as a one component fuel with averaged transport and thermodynamic coefficients. It is pointed out that for all types of biodiesel fuel the predictions of the multi-component and single component models are rather close (the droplet evaporation times predicted by these models differ by less than about 5.5%). This difference is much smaller than observed in the case of Diesel and gasoline fuel droplets, and is related to the 1 Corresponding author, e-mail: S.Sazhin@brighton.ac.uk Preprint submitted to FuelMarch 28, 2013 fact that in the case of Diesel and gasoline fuel droplets the contribution of components in a wide range of molar masses and enthalpies of evaporation needs to be taken into account, while in the case of biodiesel fuels the main contribution comes from the components in a narrow range of molar masses and enthalpies of evaporation. As in the case of Diesel and gasoline fuel droplets, the multi-component model predicts higher droplet surface temperature and longer evaporation times than the single component model.

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Liquid Biofuels: Biodiesel and Bioalcohols

Skevis

2010

Handbook of Combustion

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The development of alternative, renewable fuels is of global importance due to concerns regarding global warming, environmental protection and diversity and security of energy supply. Liquid oxygenated biofuels in particular, such as biodiesel and bioethanol, provide the potential for superior engine performance coupled with reduced particulate emissions, and are increasingly gaining acceptance and market share in the energy and transportation sectors. This chapter provides a concise review of the current knowledge on biodiesel and bioalcohol combustion science and technology. An overview is given of biodiesel and bioalcohol production technologies. An outline of important physical and chemical properties of biofuels is presented and the dependence of biodiesel fuel properties on alkyl ester structure is discussed. Reliable performance and emissions predictions are very much dependent on the availability and performance of detailed chemical kinetic mechanisms. The combustion chemistry of ethanol is fairly well established and is reviewed in detail. Recent developments in the kinetic modeling of propanol and butanol isomers are also presented. The combustion chemistry of biodiesel surrogates is also reviewed. The effects of using neat or blended biofuels on internal combustion engine performance and exhaust emissions is thoroughly reviewed. The feasibility of biofuel use in aviation is also explored. The chapter finally briefly reviews life cycle analyses that assess the environmental performance of liquid biofuels as compared with conventional fuels.

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The influence of molecular structure of fatty acid monoalkyl esters on diesel combustion

Cited by 220 publications

References 35 publications

Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels

Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels

Modelling of biodiesel fuel droplet heating and evaporation

Liquid Biofuels: Biodiesel and Bioalcohols

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