Investigations on surrogate fuels for high-octane oxygenated gasolines

Machado, Guilherme Bastos; Barros, José Eduardo Mautone; Braga, Sergio Leal; Braga, Carlos Valois Maciel; Oliveira, Edimilson Jesus de; Silva, Antonio da F.T. da H.M.; Carvalho, Leonardo de Oliveira

doi:10.1016/j.fuel.2010.10.024

Cited by 39 publications

(19 citation statements)

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“…The methodologies for surrogate fuels selection, engine test cell preparation and experimental procedures are described in more details in Machado (2012) and Machado et al (2011Machado et al ( , 2012. The main points are summarized in the next sections.…”

Section: Methodologiesmentioning

confidence: 99%

“…The T50% value, temperature at 50% v/v of fuel distilled, was calculated by averaging the results of three different methodologies. The fuels were individually tested in a Cooperative Fuel Research (CFR) engine to determine the values of MON and RON in order to calculate the Anti-Knock Index (AKI), which is the average of both measurements (Machado et al, 2011Machado, 2012).…”

Section: Fuel Propertiesmentioning

confidence: 99%

“…The behavior of surrogate fuels in a modern commercial ICE is not well understood. Machado (2012) and Machado et al (2011) presented the ability of surrogate fuels composed of iso-octane, n-heptane, toluene and ethanol to reproduce the performance of full Brazilian gasoline in commercial engines. These studies determined the optimal amount of each component in a surrogate fuel for high-octane oxygenated gasolines.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Gasoline Components on Engine Efficiency and Emissions

Machado

Barros

Braga

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-L'influence des composants de l'essence sur l'efficacite´et les e´missions du moteur -Pour les de´cennies a`venir, il est pre´vu que les combustibles fossiles et les biocarburants utilise´s dans les moteurs a`combustion interne restent la principale source de propulsion des ve´hicules, ce qui justifie la recherche intense dans le monde entier et les efforts de de´veloppement pour re´pondre aux enjeux d'une efficacite´croissante et de la re´duction des e´missions. La mode´lisation des combustibles commerciaux et les processus de combustion des moteurs pre´sentent de grands de´fis. Il est e´galement impe´ratif de mieux comprendre comment les diffe´rents composants de carburant interagissent et interviennent sur la combustion du moteur et ses parame`tres de performance. Dans le travail pre´sente´, des compose´s repre´sentatifs ont e´te´utilise´s afin d'appliquer des me´thodologies et d'e´valuer l'influence des composants du carburant sur ses proprie´te´s et sur la combustion du moteur, ainsi que sur les parame`tres de performance. Une attention toute particulie`re est accorde´e à l'efficacite´du moteur et au comportement des e´missions, de meˆme qu'a`leurs corre´lations par rapport aux proprie´te´s du carburant et ad 'autres parame`tres de performance du moteur. Les potentiels de chaque composant et le groupe chimique y affe´rent ont e´te´identifie´s pour diffe´rentes de´finitions techniques moteurs. Les re´sultats combinent des informations et des me´thodologies qui peuvent eˆtre utilise´es pour de´velopper des carburants destine´s a`diffe´rentes applications.Abstract -Influence of Gasoline Components on Engine Efficiency and Emissions -For the next few decades, it is expected that fossil fuels and bio-fuels used in internal combustion engines will remain the primary source for vehicular propulsion. This justifies the intense worldwide research and development effort to comply with the challenges of increasing efficiency and reducing internal combustion engine emissions. The modeling of commercial fuels and engine combustion processes presents great challenges. There is also the need to better understand how different fuel components interact and influence engine combustion and performance parameters. In the present work, This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Oil & Gas Science and Technology -Rev. IFP Energies nouvelles (2016) 71, 12 Ó G.B. Machado et al., published by IFP Energies nouvelles, 2014 DOI: 10.2516 surrogate fuels were used to implement methodologies to evaluate the influence of fuel components on fuel properties and multiple engine combustion and performance parameters. Special attention is given to engine efficiency and emissions behavior and their correlations to fuel properties and others performance parameters of the engine. The potentials of each component ...

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Section: Methodologiesmentioning

confidence: 99%

Section: Fuel Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Gasoline Components on Engine Efficiency and Emissions

Machado

Barros

Braga

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Response surfaces based on RBF models were built based on fuel properties and experimental performance data that were available in the previous work of Machado et al [21][22][23], In that study, it was presented a comprehensive analysis of surrogate fuels performance related to their composition. Ternary plots of response surfaces were statistically determined based on normalized concentrations of three basic gasoline components (iso-octane, n-heptane and toluene) and mathematical models were developed relating the percent volumetric concentration of each component with various different fuel properties and engine performance parameters [24,25].…”

Section: Experimental Datamentioning

confidence: 99%

“…Additionally, experimental data from four alternative variations of anhydrous ethanol content in mixture B (B_E00 to B_E75); pure anhydrous ethanol (EAC); and pure hydrous ethanol (EHC) were available. Machado et al [21][22][23] performed their experiments on a four-cylinder four-stroke Fiat Fire 1.4L Tetrafuel engine that is able to run with pure gasoline, Brazilian regular gasoline (that is a gasohol with 18% to 25% of anhydrous ethanol by volume), any mixtures of Brazilian gasoline and hydrous ethanol, pure hydrous ethanol and also natural gas. Details of the main engine specifications are presented in Table 2.…”

Section: Experimental Datamentioning

confidence: 99%

Prediction of Internal Combustion Engines Performance Related to Fuel Properties Using Radial Basis Functions

Carvalho¹,

Machado²,

Colaço³

2014

Anais Do XXII Simpósio Internacional De Engenharia Automotiva

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Accurate simulation of fuel properties influence in internal combustion engines performance is a very complex approach and combines many physical and chemical concepts such as combustion phenomena, chemical kinetics, fluid dynamics, turbulence and thermodynamics. The right modelling of that is still a challenge and currently available software packages for engines simulation usually consider standard or surrogate fuels. Besides that, new engine technologies, including those for sport motor application, can achieve better performances if custom fuels are formulated and applied. This development usually requires a large number of tests with different fuels, which leads to very expensive researches. Therefore, simulation is an option to reduce the number of tests and the associated costs. This paper presents the use of a response surface approach based on Radial Basis Functions to simulate a flexible fuel engine running with distinct blends of iso-octane, n-heptane, toluene and ethanol. Performance, energetic efficiency and pollutant emissions are predicted in different operating conditions.

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Critical review on recent progress of ethanol fuelled flex‐fuel engine characteristics

Azhaganathan

Ashok

2022

Intl J of Energy Research

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Summary Ethanol‐powered spark ignition (SI) engines have the potential to mitigate the twin crisis of fossil fuel depletion and exhaust emissions. However, the successful promotion of ethanol is hindered due to the restriction of fuel blend diversity and design features in the conventional SI engine. The fuel flexibility can be overcome by the use of flex‐fuel engine (FFE) technology with appropriate changes in engine design features for a wide range of ethanol blends. The understanding of FFE based on various technical aspects has greater potential in the automotive sector. Therefore, this review paper provides a holistic approach to critically analyze the various technical aspects of FFE. In this work, the application of ethanol blends on FFE output characteristics is reviewed critically considering the effects of engine operating conditions and parameters. Further, the impact of ethanol blends on material compatibility, cold starting characteristics, and unregulated emissions are analyzed. The outcome of the study shows that combustion and performance characteristics such as cylinder pressure(CP), heat release rate (HRR), and brake thermal efficiency (BTE) are improved in FFE operation due to the clean‐burning characteristics of ethanol blends. Also, carbon monoxide(CO) and hydrocarbon (HC) emissions decreased without any significant improvement in nitrogen oxides (NOx) emissions with a wide range of ethanol shares in FFE. Finally, this study summarizes the present status of research in FFE and creates a route towards the direction of multidisciplinary research need in the future that supports the application of different types of biofuels in FFE.

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Investigations on surrogate fuels for high-octane oxygenated gasolines

Cited by 39 publications

References 14 publications

Influence of Gasoline Components on Engine Efficiency and Emissions

Influence of Gasoline Components on Engine Efficiency and Emissions

Prediction of Internal Combustion Engines Performance Related to Fuel Properties Using Radial Basis Functions

Critical review on recent progress of ethanol fuelled flex‐fuel engine characteristics

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