Emission analysis of a Diesel Engine Operating in Diesel–Ethanol Dual-Fuel mode

Júnior, Roberto Freitas Britto; Martins, Cristiane Aparecida

doi:10.1016/j.fuel.2015.01.008

Cited by 49 publications

(13 citation statements)

References 33 publications

(13 reference statements)

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“…Britto et al [17] tested a single cylinder diesel engine with compression ratio adjustment with a diesel injector located in the center of the combustion chamber and two ethanol injectors positioned upstream of the cylinder head inlet. The results showed increased CO and THC emissions, attributed to the ethanol cooler effect and non-homogeneous air-ethanol mixture.…”

Section: Introductionmentioning

confidence: 99%

Combustion, performance and emissions of a diesel power generator with direct injection of B7 and port injection of ethanol

Oliveira

Morais

Valente

et al. 2016

J Braz. Soc. Mech. Sci. Eng.

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This work investigates a diesel engine operating with diesel oil containing 7% biodiesel (B7) and hydrous ethanol with concentrations varying from 5% to 30%. The experiments were conducted in a 49 kW diesel power generator, equipped with an electronic ethanol injection unit installed in the intake manifold and without any modifications in the diesel oil injection system. The results showed a decrease of in-cylinder pressure and net heat release rate with the use of ethanol at low loads and an increase at high loads, in comparison with B7. Increasing ethanol injection caused increased ignition delay and decreased combustion duration. Fuel conversion efficiency was raised up to 13% with the use of ethanol. The use of 30% ethanol in the fuel caused a reduction of carbon dioxide (CO2) emissions up to 12% and nitric oxide (NO) up to 53%. Carbon monoxide (CO), total hydrocarbons (THC) and oxides of nitrogen (NOX) emissions increased with ethanol addition. The replacement of 20% of diesel fuel by ethanol showed the lowest penalties on NOX emissions.

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Section: Introductionmentioning

confidence: 99%

Combustion, performance and emissions of a diesel power generator with direct injection of B7 and port injection of ethanol

Oliveira

Morais

Valente

et al. 2016

J Braz. Soc. Mech. Sci. Eng.

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show abstract

“…Besides that, the ethanol addition causes an increase of OH radicals, promoting the soot oxidation. López et al [13] report that the ethanol fumigation causes reduction of particulate matter emissions compared to diesel oil conventional operation, probably by the oxygen present in ethanol and by the reduction of sulfur in the total used fuel.…”

Section: Exhaust Gas Opacitymentioning

confidence: 99%

“…López et al [13] tested a four-cylinder engine with 59 kW, coupled to a magnetic break, and reported an increase of specific fuel consumption and thermal efficiency reduction when using 10% of ethanol as fuel. Nour et al [14] reported the same behavior when using ethanol and water blends, being that the increase of parcel of water contributes for the increase of specific fuel consumption and reduce the thermal efficiency.…”

Section: Introductionmentioning

confidence: 99%

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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“…A single 40 cylinder research engine with diesel direct injection and port ethanol injection that aim to form a homo-41 geneous air-fuel mixture in the intake port was used. Diesel Engine Operating in Diesel-Ethanol Dual-Fuel mode reduced the Nox emission in up to 60% and there was increase of the THC, the CO and the aldehydes [2]. Determination of aldehydes and ketones with high atmospheric reactivity on diesel exharust using a biofuel from animal fats and analyze carbonyl compounds emissions, due to its highly atmospheric reactivity, to complete the characterization of the total emissions in this kind of biofuel [3].…”

Section: Introductionmentioning

confidence: 99%

Emission of Aldehydes From LHR Diesel Engine With Carbureted Butanol and Jatropha Oil

Narender¹,

Kumar²,

Hadya³

et al. 2021

International Journal of Mechanical Engineering and Technology (Ijmet)

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Experiments were carried out to study emission of aldehydes from low heat rejection diesel engine, which consist of air gap insulated piston among 3-mm air gap with an alloy of nickel superni crown, air gap insulated liner with superni place in and ceramic coated cylinder head with normal temperature condition of crude jatropha oil -butanol mixture operation with varied injection timing and injection pressures and compared with diesel -butanol mixture operation and also clean diesel operation on conventional engine (CE). At maximum load operation by different percentages of butanol on a mass basis was introduced into the engine via a variable jet carburettor installed at the engine's inlet manifold. Comparative studies were made between LHR engine and conventional engine with diesel, crude jatropha oil and carbureted butanol at recommended injection timings and varied injection pressures. Aldehydes were measured by using the dinitrophenyl hydrazine (DNPH) method at maximum load engine operation of the engine.

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Emission analysis of a Diesel Engine Operating in Diesel–Ethanol Dual-Fuel mode

Cited by 49 publications

References 33 publications

Combustion, performance and emissions of a diesel power generator with direct injection of B7 and port injection of ethanol

Combustion, performance and emissions of a diesel power generator with direct injection of B7 and port injection of ethanol

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

Emission of Aldehydes From LHR Diesel Engine With Carbureted Butanol and Jatropha Oil

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