Hydrocarbon emissions in flex fuel vehicles using ethanol: Preliminary results using a method implemented in Brazil

Siciliano, Bruno; Silva, Cleyton Martins da; Loureiro, Luciana Neves; Vicentini, Pedro Caffaro; Arbilla, Graciela

doi:10.1016/j.fuel.2020.119506

Cited by 12 publications

(3 citation statements)

References 16 publications

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“…Under the dynamic test conditions, unburned ethanol increases with increasing the share of ethanol in FFV as a result of higher LHV of ethanol 147 . In most studies, saturated hydrocarbon emissions are increased with ethanol blends in FFV because of the inefficient oxidation process in the catalyst under low temperature operating conditions 148,149 . Other than the saturated hydrocarbon emissions, few unsaturated hydrocarbon emissions are present in the exhaust of FFV.…”

Section: Flexible Fuel Vehicle Output Characteristics Under Transient...mentioning

confidence: 99%

“…147 In most studies, saturated hydrocarbon emissions are increased with ethanol blends in FFV because of the inefficient oxidation process in the catalyst under low temperature operating conditions. 148,149 Other than the saturated hydrocarbon emissions, few unsaturated hydrocarbon emissions are present in the exhaust of FFV. Due to ethanol fuel's inherent oxygen content, a saturated hydrocarbon such as 1,3-butadiene and propene emissions are improved, but the global trend is not followed for acetylene.…”

Section: Unburned Ethanol Saturated and Unsaturated Hydrocarbonsmentioning

confidence: 99%

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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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Section: Flexible Fuel Vehicle Output Characteristics Under Transient...mentioning

confidence: 99%

Section: Unburned Ethanol Saturated and Unsaturated Hydrocarbonsmentioning

confidence: 99%

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

Azhaganathan

Ashok

2022

Intl J of Energy Research

View full text Add to dashboard Cite

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“…The continuous advance process in the automotive sector includes a large variety of technologies, such as intelligent vehicle technologies [4], automatic parking assistance systems [5], the incorporation of Internet of Things (IoT)-based technologies [6,7], and advanced brake control [8,9]. With regard to the vehicle propulsion system, flex fuel technology allows for an engine to run simultaneously with two different fuels, for example, hydrous ethanol (E100) or gasoline [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Induction of a Consumption Pattern for Ethanol and Gasoline in Brazil

et al. 2022

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Historically, carbon dioxide emissions from transport have been a globally discussed and analyzed problem. The adoption of flex fuel vehicles designed to run ethanol–gasoline blends is important to mitigate these emissions. The main purpose of this paper is to analyze the impact of the ethanol–gasoline price ratio on different vehicle models, and discuss the opportunities to increase ethanol consumption from this perspective. Our analysis shows that the use of a unique fuel economy ratio for all flex–fuel vehicles in the country significantly reduces the opportunity of some customers to purchase hydrous ethanol. The paper also discusses possible actions to provide adequate information that may increase the possibility of fuelling vehicles with a high-level ethanol blend.

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Comparative effect of fuel ethanol content on regulated and unregulated emissions from old model vehicles: An assessment and policy implications

Lin

Jhang

Lin

et al. 2021

Atmospheric Pollution Research

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Hydrocarbon emissions in flex fuel vehicles using ethanol: Preliminary results using a method implemented in Brazil

Cited by 12 publications

References 16 publications

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

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

Induction of a Consumption Pattern for Ethanol and Gasoline in Brazil

Comparative effect of fuel ethanol content on regulated and unregulated emissions from old model vehicles: An assessment and policy implications

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