Effect of n-Butane and propane on performance and emission characteristics of an SI engine operated with DME-blended LPG fuel

Lee, Seok-Hwan; Oh, Sung‐Yong; Choi, Young; Kang, Kernyong

doi:10.1016/j.fuel.2010.11.040

Cited by 55 publications

(25 citation statements)

References 8 publications

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“…The increase in CO 2 and decrease in CO suggested a shift from partial oxidation to complete oxidation. Previously, Frye et al [5] suggested that DME produced lower CO emissions than propane and butane; and Lee et al [12] suggested that DME addition to n-butane and LPG decreased the emissions of CO, in conformity with the results obtained in this study. Effect of DME mole fraction on the mole fractions of CO 2 and CO seemed to become more dominant at higher temperatures.…”

Section: Resultssupporting

confidence: 90%

“…At low engine speed, exhaust THC and NO x emissions were slightly increased when DME blended fuel was used. DME blended propane which has a higher octane number than n-butane was also tested in SI engine to reduce the engine knock problem [12]. At a concentration of 20% DME (by mass) in the fuel blend, stable engine operation was obtained for a wide range of engine loads with DME/propane blend rather than DME/n-butane blend.…”

Section: Introductionmentioning

confidence: 99%

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Effects of dimethyl ether on n-butane oxidation

Bekat

İnal

2014

Fuel

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h i g h l i g h t s" Effects of DME addition to n-butane oxidation were studied. " DME was found to decrease the formations of CO, aromatic species and PAHs. " DME addition increased the formations of formaldehyde and acetaldehyde. " Effects of equivalence ratio were investigated in fuel-rich conditions. " Increasing equivalence ratio increased the formations of aromatic and PAH species. a r t i c l e i n f o t r a c tDimethyl ether (DME) is the simplest ether and it is used as an alternative fuel or fuel additive to reduce toxic emissions from combustion processes. The effects of DME on n-butane oxidation were investigated for two different concentrations of DME in the fuel mixture (i.e., 20% and 50%) and two different fuel-rich equivalence ratios (i.e., 2.6 and 3.0) using detailed chemical kinetic modeling. Reactor model was selected as atmospheric-pressure, adiabatic, tubular reactor, operated under laminar flow conditions. The concentration profiles of major, minor, and trace species were obtained for n-butane/DME/oxygen/argon at six different reactor inlet temperatures, and the results were compared with those attained for pure n-butane oxidation case (n-butane/oxygen/argon). Dimethyl ether addition decreased formations of various toxic species such as carbon monoxide, aromatic species, and polycyclic aromatic hydrocarbons, while it increased the formations of formaldehyde and acetaldehyde. Increasing equivalence ratio increased the formations of carbon monoxide, methane, aromatic species, and polycyclic aromatic hydrocarbons, while its effects on formaldehyde and acetaldehyde were not pronounced under the conditions studied.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effects of dimethyl ether on n-butane oxidation

Bekat

İnal

2014

Fuel

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“…Also, Gülder's group [21] has studied synergistic effects of soot formation for binary fuel mixtures of small alkanes and alkenes including n-and iso-butane; they have analyzed the different pyrolysis products of both fuels and their different tendencies to form the C2 intermediates (from n-butane) or the C1 and C3 species (from iso-butane) of relevance in soot precursor formation. Such fuel mixtures are important with respect to the combustion of alternative engine fuels [3,22,23]. Butane partial oxidation is also an important source of maleic anhydride as precursor to, e.g.…”

Section: Introductionmentioning

confidence: 99%

Combustion Chemistry of the Butane Isomers in Premixed Low-Pressure Flames

Oßwald¹,

Kohse‐Höinghaus

Struckmeier

et al. 2011

Zeitschrift Für Physikalische Chemie

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The combustion chemistry of the two butane isomers represents a subset in a comprehensive description of C1-C4 hydrocarbon and oxygenated fuels. A critical examination of combustion models and their capability to predict emissions from this class of fuels must rely on high-quality experimental data that address the respective chemical decomposition and oxidation pathways, including quantitative intermediate species mole fractions. Premixed flat low-pressure (40 mbar) flames of the two butane isomers were thus studied under identical, fuel-rich (φ = 1.71) conditions. Two independent molecular-beam mass spectrometer (MBMS) set-ups were used to provide quantitative species profiles. Both data sets, one from electron ionization (EI)-MBMS with high mass resolution and one from photoionization (PI)-MBMS with high energy resolution, are in overall good agreement. Simulations with a flame model were used to analyze the respective reaction pathways, and differences in the combustion behavior of the two isomers are discussed.

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“…The use of DME as fuel also in SI engines is becoming more frequently considered. Economic and ecological benefits combined with very favorable physicochemical properties are the direct cause of these interests [5,6]. The most important aspect to mention is the possibility of obtaining DME as a renewable fuel produced from biomass.…”

Section: Introductionmentioning

confidence: 99%

The possibilities of using DME (BioDME), as an additive to conventional gaseous fuels in SI engine

2017

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The results of SI engine fueled with blends of LPG and DME are presented in the paper. The range studies submitted includes measurements at varying engine loads, at selected values of speed. The research was conducted on a chassis dynamometer, specifying the engine load by the degree of throttle opening. Value of the mass fraction of DME in the blend with LPG was determined based on previous analyzes. The selected fuel blends containing from 7 to 17% DME (mass fraction). During the study was also performed a series of comparative measurements with pure LPG. Analyses show that of DME can be used as a partial substitute for LPG in SI engines. Its presence does not a negative impact on performance and emissions of the engine. The obtained results indicate that the amount of addition of DME should be varied depending on the engine load. Moreover, the use of this fuel does not require changes to the design fueling system and storage of LPG.

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Effect of n-Butane and propane on performance and emission characteristics of an SI engine operated with DME-blended LPG fuel

Cited by 55 publications

References 8 publications

Effects of dimethyl ether on n-butane oxidation

Effects of dimethyl ether on n-butane oxidation

Combustion Chemistry of the Butane Isomers in Premixed Low-Pressure Flames

The possibilities of using DME (BioDME), as an additive to conventional gaseous fuels in SI engine

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