Combustion heat release analysis of ethanol or n-butanol diesel fuel blends in heavy-duty DI diesel engine

Rakopoulos, Dimitrios C.; Rakopoulos, C.D.; Papagiannakis, Roussos G.; Kyritsis, Dimitrios C.

doi:10.1016/j.fuel.2010.12.003

Cited by 304 publications

(114 citation statements)

References 69 publications

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“…Butanol is less corrosive than ethanol and is less prone to water contamination, hence allowing it to be transported using existing fuel supply pipelines. Moreover, butanol has a higher lower heating value as compared to the respective value of ethanol, which is much closer to the lower heating value of gasoline [6,7,17]. This fact, combined with the higher stoichiometric air-fuel ratio, permit higher blending levels of butanol in gasoline than ethanol without changing regulations and engine control systems.…”

Section: Introductionmentioning

confidence: 91%

“…Bio-fuels made from agricultural products (oxygenated by nature) can reduce the world's dependence on fossil fuels imports, support local agricultural industries and, what is more, offer benefits in terms of usually reduced exhaust emissions. Among those, alcohol-based fuels are considered as very promising fuels, which could possibly replace fully the conventional liquid fuel (gasoline or diesel fuel) in reciprocating internal combustion engines [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…While ethanol seems to be the most usual alcohol for automotive applications, butanol seems to be also promising as its properties are closer to gasoline than those of ethanol. Butanol is a viable alternative to ethanol and offers several benefits over ethanol, while it can be produced also from the fermentation of sugars in biomass [6,7,17]. Butanol is less corrosive than ethanol and is less prone to water contamination, hence allowing it to be transported using existing fuel supply pipelines.…”

Section: Introductionmentioning

confidence: 99%

“…This fact, combined with the higher stoichiometric air-fuel ratio, permit higher blending levels of butanol in gasoline than ethanol without changing regulations and engine control systems. Additionally, butanol has a lower latent heat of vaporization than ethanol, which could reduce issues related to fuel atomization and combustion during cold start conditions [6,7,17]. Butanol also offers benefits over ethanol for use in CI engines including a higher cetane number, lower vapor pressure, and improved miscibility in diesel fuel [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Study of the Effects of Spark Timing on the Performance and Emissions of a Light-Duty Spark Ignited Engine Running under Either Gasoline or Ethanol or Butanol Fuel Operating Modes

Papagiannakis

Rakopoulos

2017

Energies

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Much research is ongoing to find suitable alternate fuels in order to reduce the exhaust emission levels without deteriorating the basic performance characteristics of conventional spark-ignited (SI) engines. One of the methods to achieve the above problem is the use of alcohols as full supplement fuels to normal gasoline. At the same time, many related research studies have shown that the use of alcohols has a negative impact on some basic engine performance characteristics, e.g., brake power output, etc. On the other hand, spark timing is one of the critical engine operating parameters that significantly influences the combustion mechanism inside the combustion chamber of a SI engine. Therefore, the primary objective of the present work is to investigate the effect of spark timing on the performance and emissions characteristics of a conventional, four-stroke, SI engine running under three different fuel operating modes, viz. with conventional gasoline or ethanol or butanol. The specific investigation is conducted by using an in-house, comprehensive, two-zone phenomenological model. The predictive ability of the model is tested against pertinent experimental data and it is found that the computed results are in good agreement with the respective experimental ones. For all test cases examined herein, the results concern basic engine performance characteristics, i.e., cylinder pressure, power output, specific fuel consumption etc., as well as NO and CO emissions. The main objectives of the work were to record and evaluate the impact that spark timing has on the performance characteristics and emitted pollutants of a conventional SI engine, operating under either conventional gasoline or ethanol or butanol fuel operating modes. Moreover, it deals with the determination of an optimum combination between the type of fuel used and the spark timing, so that probable undesirable effects on engine performance characteristics would be avoided. By comparing this investigation results, it is revealed that the use of alcohols as a full substitute fuel of gasoline accompanied with an appropriate alteration of the spark timing, could be a promising solution to improving both the efficiency and environmental behavior of a light-duty, spark-ignited (SI) engine, without causing any harmful problems to the engine operational lifetime. The conclusions from the study may prove valuable for the application of this technological solution to existing conventional SI engines.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theoretical Study of the Effects of Spark Timing on the Performance and Emissions of a Light-Duty Spark Ignited Engine Running under Either Gasoline or Ethanol or Butanol Fuel Operating Modes

Papagiannakis

Rakopoulos

2017

Energies

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“…So several methodologies have been applied to overcome these difficulties for preparing biofuel such as dilution method where vegetable oils in small portions are blended with diesel; microemulsion (ME) method where oils are mixed with alcohols using surfactants; pyrolysis by simple cracking of vegetable oils either by heating directly or with catalysts, a less energy efficient method and lastly transesterification comprising a reversible chemical reaction between oil and short chain alcohols producing biodiesel and glycerol with catalysts [12][13][14][15]. The biofuel obtained through these methods are biodegradable and environmentally friendly however their high cost, poor cold flow properties and increasing nitrogen oxides (NO x ) in exhaust emissions have been few of the disadvantages [16][17][18]. Using Sorbitane Fatty Esters Transesterification is widely applied for reducing viscosity of oils and obtained biodiesel has kinematic viscosity, specific gravity, cetane number and gross heat of combustion as compared to No.…”

Section: Introductionmentioning

confidence: 99%

Physiochemical and Phase Behaviour Study of Jatropha curcus Oil - Ethanol Microemulsion Fuels Using Sorbitane Fatty Esters

Patidar¹,

Chandra²,

Singh³

et al. 2014

IJRSE

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Vegetable oil reverse micelle microemulsions have been an alternative method of biodiesel production to eliminate and avoid transesterification as well as unpurified glycerol. Sorbitane fatty ester surfactants due to their high solubilization capacity forms microemulsions with oils and thus span based reverse micelle microemulsion systems have been studied. Jatropha oil-ethanol microemulsions have been prepared using span 80 and 85 surfactants and optimized as biofuel, their phase behavior with physicochemical parameters: density, viscosity and surface tension were analyzed for formulation. The surface tension has been an important physicochemical parameter in addition to kinematic viscosity elucidating Jatropha oil-ethanol microemulsion with span 80 than with span 85, as a better biofuel. Comparatively, a lower amount of span 80 than span 85 was utilized for microemulsion formulations and resulted viscosities were in close agreement with ASTM biodiesel standards. The microemulsification approach has been found a sustainable method for producing biofuels without chemical reactions and their fuel properties have been adjusted through variable formulations.

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Fuel Class Higher Alcohols

Sarathy¹

2016

Biofuels From Lignocellulosic Biomass

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Combustion heat release analysis of ethanol or n-butanol diesel fuel blends in heavy-duty DI diesel engine

Cited by 304 publications

References 69 publications

Theoretical Study of the Effects of Spark Timing on the Performance and Emissions of a Light-Duty Spark Ignited Engine Running under Either Gasoline or Ethanol or Butanol Fuel Operating Modes

Theoretical Study of the Effects of Spark Timing on the Performance and Emissions of a Light-Duty Spark Ignited Engine Running under Either Gasoline or Ethanol or Butanol Fuel Operating Modes

Physiochemical and Phase Behaviour Study of Jatropha curcus Oil - Ethanol Microemulsion Fuels Using Sorbitane Fatty Esters

Fuel Class Higher Alcohols

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