Ethanol as Internal Combustion Engine Fuel

Ilves, Risto; Küüt, A.; Olt, Jüri

doi:10.1016/b978-0-12-811458-2.00008-0

Cited by 12 publications

(9 citation statements)

References 16 publications

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“…40 To ensure fuel flexibility, a few SI engine vehicular systems and their materials need to be changed to adopt FFE technology as shown in Figure 4 to extend the life of components and attain the maximum power output. The combustion process of FFE is almost similar to the conventional gasoline engine but the lookup tables (injection duration, ignition timing, etc) in EMS have to be varied based on the ethanol share F I G U R E 1 Merits and demerits of ethanol as a fuel [22][23][24] F I G U R E 2 Requirement of engine components modification in SI engine for different ranges of ethanol blends [28][29][30] automatically. 42 The spark timing must be calibrated and optimized for different ethanol blends along with the high-power density of the spark plug and battery.…”

Section: Flexible Fuel Engine Featuresmentioning

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 Engine Featuresmentioning

confidence: 99%

“…Requirement of engine components modification in SI engine for different ranges of ethanol blends 28‐30 …”

Section: Introductionmentioning

confidence: 99%

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

Azhaganathan

Ashok

2022

Intl J of Energy Research

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Section: Soybean Biodieselmentioning

confidence: 99%

“…The study has focused more attention on the use of biodiesels as an alternative fuel because it is the commonly used alternative fuel in compression ignition engines. However, alcohols are also used to reduce engine emissions [59][60]. The use of metallic additives in biodiesels is also gathering momentum among scholars due to the positive results obtained from earlier studies.…”

Section: Advanced Combustion Modesmentioning

confidence: 99%

Performance Optimization of Compression Ignition Engines: A Review

Towoju¹

2022

eng.pers

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A catalyzing factor for the continuous search to optimize the compression ignition engines is the impact it has on the environment. The compression ignition engines find applications in the transportation sector, agriculture, energy, and construction sectors, and the optimization of its performance will thus not be an effort in futility. Many studies have focused on the optimization of the performance of compression ignition engines. The ones of interest reviewed herein can be broadly categorized as combustion chamber geometry studies, fuel studies, and advanced combustion modes studies. The combustion chamber geometry poses an impact on the in-cylinder fluid motion. This influences the combustion process which in-turn affects the engine performance and emission characteristics. The fuel type is also an influencer of the engine performance and emission characteristics drawing its impact from its properties. The combustion mode also poses an impact on the combustion process and can influence the engine performance and its emission characteristics. While it is difficult to pinpoint a particular intervention means that can completely resolve the challenges created by the use of ignition compression engines, the combustion chamber geometry optimization tends to bring along emission reduction and efficiency boost. A combination of the different methods will however, make a huge impact.

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“…As a result, when it comes to internal combustion engines, engineers have proposed various solutions in terms of the use of different renewable fuels and supporting systems of fuels (engine sub systems, tanking systems, etc.) (Ilves et al 2019;Safronov et al 2020). A potential solution is the use of gaseous fuel with DF in diesel engines where gas is injected into the engine's intake manifold and DF is injected directly into the cylinder (Karim 2003;Namasivayam et al 2010;Azimov et al 2011;Korakianitis et al 2011;Ryu 2013).…”

Section: Introductionmentioning

confidence: 99%

The Impact of a Two-Phase Diesel Fuel Pilot Injection on the Compressed Natural Gas Air–fuel Mixture Combustion Process in a Diesel Engine

et al. 2022

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Nowadays, there is a global trend towards the use of alternative fuels in order to reduce environmental pollution. For example, Compressed Natural Gas (CNG) has become more widely used around the world. The use of different fuels in engines affects the combustion process and efficiency, with the latter potentially being reduced by such means as, for example, the use of gaseous fuels in conventional diesel engines. Therefore, it is also important to know how CNG combusts in a diesel engine and how the combustion process can be improved. Consequently, the aim of the study is to give an overview of the effect of divided Diesel Fuel (DF) pilot injection on the combustion process of a naturally aspirated diesel engine using dual-fuel mode, with one fuel being DF and the other CNG. The focus of the article is on the commonly used engines on which the diesel injection system works regularly, and CNG fuel is injected into the intake manifold as an additional fuel. The engine DF quantity and injection timing are regulated by the acceleration pedal. The article provides an overview of the diesel and dual-fuel combustion process, and compare the DF and dual-fuel combustion processes. For this purpose, a test was carried out in order to measure the various involved parameters, such as the combustion pressure, torque, and fuel consumption. The results demonstrated that ignition delay does not significantly vary with the use of gas as a fuel source, and the maximum combustion pressure is actually higher with gas. The combustion is more rapid in dual-fuel mode and results indicate that when using dual-fuel mode on regular engines, it would be necessary to regulate the pre- and main-injection timing.

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Ethanol as Internal Combustion Engine Fuel

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

Performance Optimization of Compression Ignition Engines: A Review

The Impact of a Two-Phase Diesel Fuel Pilot Injection on the Compressed Natural Gas Air–fuel Mixture Combustion Process in a Diesel Engine

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