Assessment of a direct injection diesel engine fumigated with ethanol/water mixtures

Morsy, Mohamed

doi:10.1016/j.enconman.2015.01.086

Cited by 64 publications

(27 citation statements)

References 42 publications

(99 reference statements)

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“…This fact has been reported in literature by Morsy [5]. Oliveira et al [6] report an increase of thermal efficiency while it was increased the substitution of diesel oil per ethanol, mainly at high loads (above 50%). According to these authors, at high loads, a lot of fuel is burned, increasing the exhaust gas temperature, and this effect, connected to the large mass fuel burned in the premixed phase, are the determinant factors in the reduction or the increase of efficiencies.…”

Section: Energy and Exergy Efficiencysupporting

confidence: 73%

“…As a result, there was a reduction of heat lost to the cylinder walls and increase thermal efficiency [5,8]. Oliveira et al [6] report in their research 13% increase in efficiency when use ethanol fumigation on diesel engine. Jamuwa et al [8] report that the high ethanol flame front velocity resulting in a higher portion of combustion in the premixed phase and reduction of the diffusive flame.…”

Section: Energy and Exergy Efficiencymentioning

confidence: 96%

“…Oliveira et al [6] describe that the air entering in the cylinder is cooled when ethanol is admitted in the intake manifold, causing leaning of mixture air/fuel and reduction of air specific volume. The mixture with higher amount of air can cause dilution and reduction of exhaust gas temperature.…”

Section: Exhaust Gas Temperature and Air Excessmentioning

confidence: 99%

“…Oliveira et al [6] analyzed the performance and emissions of a generation set. The engine is a four-cylinders and the compression rate is 17, operating with direct injection of diesel oil and ethanol fumigation, without the addition of water to ethanol.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance effects and economic viability of high-hydrated ethanol fumigation and diesel direct injection in a small compression ignition engine

Rosa¹,

Lorenzini²,

Altafini³

et al. 2019

MMEP

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This study investigates the operation of a diesel engine (compression ignition) coupled to an alternator, using mixtures of diesel oil and hydrous ethanol as fuel, with high water content. The mixtures of ethanol and water were injected at the intake manifold (fumigation), while the diesel oil was injected directly in the combustion chamber. The mixtures of ethanol and water were prepared with 90, 80 and 70% of ethanol, at volumetric fraction. The analyzed parameters were energetic and exergetic efficiency, specific fuel consumption, exhaust gas opacity and exhaust gas temperature. The results have shown that the increase of water in hydrous ethanol causes reduction of efficiencies (energetic and exergetic) and increase the specific fuel consumption, however, the gas opacity and the exhaust gas temperature are reduced. Despite the reduction of efficiencies, the use of ethanol with high water fraction is viable because there is potential for fossil fuel substitution by a renewable source. Economically, it was verified that for each condition tested there is a maximum cost of ethanol for viability, and only in 4 out of 27 Brazilian states the use of fumigation of ethanol/water blends technique would be viable, but with the lowest water concentration.

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Section: Energy and Exergy Efficiencysupporting

confidence: 73%

Section: Energy and Exergy Efficiencymentioning

confidence: 96%

Section: Exhaust Gas Temperature and Air Excessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance effects and economic viability of high-hydrated ethanol fumigation and diesel direct injection in a small compression ignition engine

Rosa¹,

Lorenzini²,

Altafini³

et al. 2019

MMEP

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show abstract

“…Ambrós et al [21] pointed out that hydrous ethanol is more efficient than pure ethanol by experimentally investigating the effects of hydrous ethanol with various water contents in volume in a SI engine. Morsy [22] investigated a direct injection diesel engine fumigated with hydrous ethanol. Datta and Mandal [13] has found that it can improving the NOx emission with diesel-ethanol blend compared to diesel-methanol blend.…”

Section: Introductionmentioning

confidence: 99%

Spray Combustion Characteristics and Soot Emission Reduction of Hydrous Ethanol Diesel Emulsion Fuel Using Color-Ratio Pyrometry

Zhang

et al. 2017

Energies

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To elucidate the relationship between physicochemical properties, spray characteristics, and combustion performance, a series of experiments have been conducted in a constant volume vessel with injection of hydrous ethanol diesel emulsion and regular diesel. HE30 (emulsion with 30% volume fraction of 20% water-containing ethanol and 70% volume fraction of 0# diesel) is developed using Shah's technique and regular diesel is also employed for comparison. Firstly, the physicochemical properties of two kinds of fuels are investigated. Then, the non-evaporating and evaporating spray characteristics are examined through the high-speed shadowgraphs. Finally, spray combustion experiments under different ambient oxygen concentrations are carried out, and color-ratio pyrometry (CRP) is applied to measure the flame temperature and soot concentration (KL) distributions. The results indicate that the physicochemical properties, such as density, surface tension, kinematic viscosity, cetane number, and oxygen content, have significant impact on the spray mixture formation and combustion performance. HE30 exhibits lower soot emissions than that of regular diesel. Further analysis supports the standpoint that the hydrous ethanol diesel emulsion can suppress the soot and NO x simultaneously. Therefore, the hydrous ethanol diesel emulsion has great potential to be an alternative clean energy resource.

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Energy, Exergy, and Emission Analysis of Biofuels in Compression Ignition Engine with Camphor Oil as Premixing Fuel

Gurusamy,

Ponnusamy,

Varuvel

2023

Energy Tech

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This article aims to study the impact of camphor oil premixing with intake air on compression ignition (CI) engine characteristics powered with jatropha oil and cottonseed oil. The experiment is conducted on the direct injection compression engine attached to the premixing setup. The investigation reveals that premixing of camphor oil with cottonseed oil and jatropha oil escalates the thermal brake efficiency to 35.02% and 33.62% and brings down the brake‐specific energy consumption to 10.27 and 10.70 kJ kWh−1. At all loading conditions, the premixing of camphor oil and the rise of camphor oil in premixing proportions increase the volumetric efficiency and cut the exhaust gas temperature. 20% premixing of camphor oil with cottonseed oil and jatropha oil drops the smoke opacity emissions by 22.23% and 11.86% and NO emission by 23.27% and 14.59%, respectively, at full load conditions. Further, it shows a 27.60% and 21.14% hike in CO emissions and a 31.34% and 31.87% hike in HC emissions at full load conditions. The in‐cylinder pressure, heat release rate, and mean gas temperature increase with increasing the energy share of camphor oil in premixing. Overall, the premixing of camphor oil shows better CI engine attributes except HC and CO emissions.

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Assessment of a direct injection diesel engine fumigated with ethanol/water mixtures

Cited by 64 publications

References 42 publications

Performance effects and economic viability of high-hydrated ethanol fumigation and diesel direct injection in a small compression ignition engine

Performance effects and economic viability of high-hydrated ethanol fumigation and diesel direct injection in a small compression ignition engine

Spray Combustion Characteristics and Soot Emission Reduction of Hydrous Ethanol Diesel Emulsion Fuel Using Color-Ratio Pyrometry

Energy, Exergy, and Emission Analysis of Biofuels in Compression Ignition Engine with Camphor Oil as Premixing Fuel

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