Exergetic analysis of a spark ignition engine fuelled with ethanol

Rufino, Caio Henrique; Lima, Alessandro José Truta Beserra de; Mattos, Ana Paula; Allah, Fazal Um Min; Bernal, Jair Leopoldo Loaiza; Ferreira, Janito Vaqueiro; Gallo, Waldyr Luiz Ribeiro

doi:10.1016/j.enconman.2019.04.035

Cited by 36 publications

(10 citation statements)

References 18 publications

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“…Las irreversibilidades mecánicas son causadas por la fricción, que puede calcularse por la diferencia entre la potencia de frenado indicada. Otras irreversibilidades explican la suma de diversos procesos irreversibles, como las pérdidas de bombeo, el proceso de mezcla de aire y combustible, el estrangulamiento y la transferencia de calor desde la pared al sistema de enfriamiento [27].…”

Section: Balance Exergéticounclassified

Evaluación experimental de un motor de encendido provocado bajo diferentes gasolinas

2021

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El motor de combustión interna de encendido provocado es una máquina térmica que permite obtener una potencia mecánica a partir de la energía química de un combustible. El presente trabajo tuvo como objetivo evaluar el desempeño de un motor de combustión interna mediante el balance de energía y exergía, bajo el uso individual de las tres gasolinas comercializadas en el Ecuador (súper, extra y ecopaís). La metodología experimental consistió en la puesta en marcha bajo el uso individual de las gasolinas hasta alcanzar su máxima potencia a una velocidad de giro del motor, donde se tomaron mediciones de temperatura, consumo específico del combustible y la relación aire combustible para un tiempo de tres minutos. Los resultados muestran una eficiencia energética de 11,31 % para gasolina súper, 10,75 % para gasolina extra y 10,39 % para gasolina ecopaís. En lo relacionado a la eficiencia exergética se estableció un 58,81 % para la gasolina súper, 58,89 % para la gasolina extra y un 59,19 % para la gasolina ecopaís. Los resultados permiten concluir que existe un potencial exergético de mejoramiento que puede ser una oportunidad para aumentar la eficiencia energética.

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Section: Balance Exergéticounclassified

Evaluación experimental de un motor de encendido provocado bajo diferentes gasolinas

2021

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“…Going a step further, exergy assessments are carried out to fill this gap. SI engines [21][22][23][24] and compression ignition engines [25][26][27][28] have been the focus of exergy assessments, where irreversibilities are quantified (mainly due to combustion) along with exergy losses associated with heat transfer to the environment and exhaust gases [23,[29][30][31][32]. Exergy can also be used within a sustainability perspective to determine the environmental impacts of energy conversion systems.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle and Exergoenvironmental Analyses of Ethanol: Performance of a Flex-Fuel Spark-Ignition Engine at Wide-Open Throttle Conditions

2022

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The growth in the number of vehicles circulating has led to a proportional increase in polluting gas emissions. Bioenergy can be used to help meet these increasing energy demands and mitigate environmental impacts. This work verified the effect of the content of ethanol on the exergy and exergoenvironmental analyses of a spark-ignition engine. Different gasoline–ethanol mixtures were tested along with hydrous ethanol (4.6% water by volume). The thermodynamic data refer to wide-open throttle conditions and variable engine speeds. The life cycle assessment methodology quantified the environmental impacts associated with equipment and fuel using the Eco-indicator 99 method. Pollutants emitted during combustion were measured and included in the environmental assessment (nitrogen oxides, carbon monoxide, and dioxide). Hydrous ethanol at 1500 rpm presented the highest energy efficiency. The effects of the environmental impact rate of pollutant formation and exergy efficiency were significantly higher than the environmental impact rate of fuel. The lowest specific environmental impact of the product (brake power) was 24.39 mPt/MJ, obtained with the fuel blend with 50% ethanol at 2500 rpm. The combined evaluation of the exergoenvironmental factor and the relative difference in environmental impact indicated the optimization priorities and where improvements should be directed.

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“…Ethanol has several advantages compare to gasoline, such as the subtraction on CO, volatile organic compounds (VOC), unburned hydrocarbon emission (UHC), and adequate anti-knock characteristic (denotation), that make the possibility of using the engine compression ratio getting higher. As the ethanol is a liquid fuel, its storage and emission is likewise the gasoline [6]. The use of bioethanol becoming the vehicles fuels is a safe alternative, and can reduce the dependency on petroleum.…”

Section: Introductionmentioning

confidence: 99%

“…As a matter of fact, ethanol is also used for cosmetic and pharmacy purposes [9]. Alcohol fuel, especially ethanol can be produced from the renewable sources such as sugarcane, cassava, corn, and whey which is the cheese production waste with 22,26% shared production [6], pineapple skin and sugarcane residues that produce 95 % ethanol [10], and other types of biomass waste. One of the potential materials to be extracted for ethanol raw material is corncob.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Using Gasoline-Corncob Waste Bioethanol Blends in Four-Stroke Motorcycle Engine onto Exhaust Emission and Compression Ratio

Hasan¹,

Maksum²,

Gunawan³

et al. 2020

Proceedings of the Proceedings of the the 3rd Annual Conference of Engineering and Implementation on Vocational Education, ACE

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This research utilizes corncob waste for making bioethanol by RON 109. The objective of this research is to get the best performace of exhaust emission by mixing gasoline RON 90 from E5, E10, E15, E20, to E25, and 10:1, 11:1 and 12:1 of compression ratio. In addition, the control variable covered 1400 rpm, 2400 rpm, and 3400 rpm engine speed. The testing data of exhaust emission was taken only on the carbon monoxide (CO) and hydrocarbon (HC). The result on this biethanol from corncob waste showed that the lowest exhaust emission on carbon monoxide and hydrocarbon and recom mended to be used was found on E10 fuels at 10:1 compression ratio, and E20 fuels at 11:1 compression ratio. The result obtained from this research demonstrated that the carbon monoxide and hydrocarbon emissions that produced by corncob waste bioethanol were environmently friendly compared to gasoline use only (E0).

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Exergetic analysis of a spark ignition engine fuelled with ethanol

Cited by 36 publications

References 18 publications

Evaluación experimental de un motor de encendido provocado bajo diferentes gasolinas

Evaluación experimental de un motor de encendido provocado bajo diferentes gasolinas

Life Cycle and Exergoenvironmental Analyses of Ethanol: Performance of a Flex-Fuel Spark-Ignition Engine at Wide-Open Throttle Conditions

Analysis of Using Gasoline-Corncob Waste Bioethanol Blends in Four-Stroke Motorcycle Engine onto Exhaust Emission and Compression Ratio

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