Performance and emission characteristics of a CI engine operated with n-Butane blended DME fuel

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

doi:10.1016/j.applthermaleng.2011.02.039

Cited by 40 publications

(13 citation statements)

References 5 publications

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“…The performance, emissions characteristics, and combustion stability of a single cylinder compression ignition (CI) engine operated with n-butane blended DME (0-40% n-butane by mass) and diesel fuels were studied at 1500 rpm [8]. The combustion stability of the blended fuel was better in comparison to diesel fuel, and stable engine operation was reported for a wide range of engine loads up to 30% n-butane by mass in n-butane/DME blend.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Effects of dimethyl ether on n-butane oxidation

Bekat

İnal

2014

Fuel

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“…A major downside compared to diesel is its low viscosity that will cause dysfunction of the conventional film bearing between the needle and sleeve of the injector, and this will cause leakage and wear and tear of parts. In addition, DME has a lower heating value (28.8 kJ/kg) as compared to diesel (42.5 kJ/kg) and so requires almost double the amount of fuel injected per cycle to obtain similar engine power [23]. Its low boiling point property requires the use of a pressurised system to maintain the fuel in liquid state.…”

Section: Fig 22mentioning

confidence: 99%

“…DME could also be used as an additive or as an ignition promoter in conventional diesel combustion and for dual fuel operation [23]. A comparison of DME blended diesel and LPG engine performance in terms of pressure plotted against crank angle is shown in figure 2.2.…”

Section: Dme As a Diesel Substitute: Advantages And Disadvantagesmentioning

confidence: 99%

“…Other innovative exhaust after-treatment techniques that are developed to tackle emissions to achieve future emission norms include, Lean NOx Trap (LNT) [23,91] Normal PM and UFPM accounts for both the regulated and non-regulated categories of particulate emissions from an engine. Several studies were conducted on UFPM from diesel [93][94][95][96][97][98][99] and the recently developed interest is on the UFPM from combustion of alternative fuels [100,101].…”

Section: Experimental Investigations On Gaseous (Nox Hc and Co) And Pmmentioning

confidence: 99%

“…A range of alternative fuels can be produced from coal, natural gas or biomass, and a new fuel called Dimethyl Ether (DME) has attracted great attention in recent years [21][22][23][24] because of some unique advantages of this fuel. DME is observed to have good thermal and chemical properties as a diesel replacement [25], and it can be manufactured from multiple sources such as coal, syngas, domestic bio-wastes, natural gas and any other hydrocarbon resource.…”

Section: Introductionmentioning

confidence: 99%

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A study on the control of NOx and particulate matter emissions from dimethyl ether combustion in compression ignition engines

Thomas¹

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Dimethyl Ether (DME) is a new age fuel developed mainly from coal and natural gas to use in compression ignition (CI) engines relatively easily with minimum modifications. One of the advantages of DME combustion in CI engines is the low emission levels of NOx and particulate matter (PM) in comparison with diesel combustion. Therefore, utilization of DME as an alternative fuel in CI engines can potentially meet stricter emission regulations with less effort.The thesis starts with a review of the body of experimental and numerical research on NOx and PM emissions from DME combustion, with the objective being to identify the most promising methods for emission control in DME fuelled engines. With DME being already available in several countries the current research interest is to optimize the engine performance in a cost-effective way with least modifications to existing technologies while minimizing combustion emissions to meet even the strictest emission regulations.Gaseous emissions from DME combustion are a well-researched topic while PM emissions, especially UFPM were neglected so far. However, PM emissions will become a major concern under the future emission norms such as Euro VI. A major part of the introduction and literature review discusses some of the novel methods of emission control

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Influence of low-temperature combustion and dimethyl ether-diesel blends on performance, combustion, and emission characteristics of common rail diesel engine: a CFD study

Lamani

Yadav

Narayanappa

2017

Environ Sci Pollut Res

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Due to presence of more oxygen, absence of carbon-carbon (C-C) bond in chemical structure, and high cetane number of dimethyl ether (DME), pollution from DME operated engine is less compared to diesel engine. Hence, the DME can be a promising alternative fuel for diesel engine. The present study emphasizes the effect of various exhaust gas recirculation (EGR) rates (0-20%) and DME/Diesel blends (0-20%) on combustion characteristics and exhaust emissions of common rail direct injection (CRDI) engine using three-dimensional computational fluid dynamics (CFD) simulation. Extended coherent flame model-3 zone (ECFM-3Z) is implemented to carry out combustion analysis, and k-ξ-f model is employed for turbulence modeling. Results show that in-cylinder pressure marginally decreases with employing EGR compared to without EGR case. As EGR rate increases, nitrogen oxide (NO) formation decreases, whereas soot increases marginally. Due to better combustion characteristics of DME, indicated thermal efficiency (ITE) increases with the increases in DME/diesel blend ratio. Adverse effect of EGR on efficiency for blends is less compared to neat diesel, because the anoxygenated region created due to EGR is compensated by extra oxygen present in DME. The trade-off among NO, soot, carbon monoxide (CO) formation, and efficiency is studied by normalizing the parameters. Optimum operating condition is found at 10% EGR rate and 20% DME/diesel blend. The maximum indicated thermal efficiency was observed for DME/diesel ratio of 20% in the present range of study. Obtained results are validated with published experimental data and found good agreement.

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Performance and emission characteristics of a CI engine operated with n-Butane blended DME fuel

Cited by 40 publications

References 5 publications

Effects of dimethyl ether on n-butane oxidation

Effects of dimethyl ether on n-butane oxidation

A study on the control of NOx and particulate matter emissions from dimethyl ether combustion in compression ignition engines

Influence of low-temperature combustion and dimethyl ether-diesel blends on performance, combustion, and emission characteristics of common rail diesel engine: a CFD study

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