Influence of properties of various common bio-fuels on the combustion and emission characteristics of high-speed DI (direct injection) diesel engine: Vegetable oil, bio-diesel, ethanol, n-butanol, diethyl ether

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

doi:10.1016/j.energy.2014.06.032

Cited by 289 publications

(106 citation statements)

References 26 publications

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“…Applications of alcohol fuels generally result in improved combustion phasing [25], [26] due to higher laminar flame speed. Moreover, as it was observed for diesel engines [27], [28] this category of alternative fuels feature lower particle emissions owed to specific differences in molecular structure [29]. Both affirmations have been somewhat extensively investigated at part load [30], [31] while at high engine load there is relatively reduced literature available [32], [33].…”

Section: Introductionmentioning

confidence: 98%

Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol

Merola¹,

Irimescu²,

Iorio³

et al. 2017

Preprint

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Within the context of ever wider expansion of direct injection in spark ignition engines, this investigation was aimed at improved understanding of the correlation between fuel injection strategy and emission of nanoparticles. Measurements performed on a wall guided engine allowed identifying the mechanisms involved in the formation of carbonaceous structures during combustion and their evolution in the exhaust line. In-cylinder pressure was recorded in combination with cycle-resolved flame imaging, gaseous emissions and particle size distribution. This complete characterization was performed at three injection phasing settings, with butanol and commercial gasoline. Optical accessibility from below the combustion chamber, allowed visualization of diffusive flames induced by fuel deposits; these localized phenomena were correlated to observed changes in engine performance and pollutant species. With gasoline fueling, minor modifications were observed with respect to combustion parameters, when varying the start of injection. The alcohol, on the other hand, featured marked sensitivity to the fuel delivery strategy. Even though the start of injection was varied in a relatively narrow crank angle range during the intake stroke, significant differences were recorded, especially in the values of particle emissions. This was correlated to the fuel jet-wall interactions; the analysis of diffusive flames, their location and size confirmed the importance of liquid film formation in direct injection engines, especially at medium and high load.

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Section: Introductionmentioning

confidence: 98%

Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol

Merola¹,

Irimescu²,

Iorio³

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…The experimental tests have shown that ethanol prolongs the autoignition delay and increases the maximum gas pressure inside the cylinder (Rakopoulos et al 2014). When increasing the amount of ethanol in diesel fuel, the cetane number, which is significantly lower for ethanol (5-8) than diesel fuel, is reduced correspondingly (Li et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of Ethanol on Performance and Durability of a Diesel Common Rail High Pressure Fuel Pump

2015

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Abstract. This paper presents a comparative experimental study for determining the effect of ethanol on functionality of a high pressure pump of the common rail fuel injection system. For experimental durability tests were prepared two identical fuel injection systems, which were mounted on a test bed for a fuel injection pump. One of the fuel injection systems was feed with diesel fuel; other fuel injection system was fuelled with ethanol-diesel fuel blend. A blend with 12% v/v ethanol and 88% v/v diesel fuel and low sulphur diesel fuel as a reference fuel were used in this study. To determine the effect of ethanol on the durability of the high pressure pump total fuel delivery performance and surface roughness of pump element were measured prior and after the test. Results show that the use of the ethanol-diesel blend tested produced a negative effect on the durability of the high pressure fuel pump. The wear of plungers and barrels when using ethanol-diesel fuel blend caused a decrease in fuel delivery up to 30% after 100 h of operation.

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“…1 The diesel engine produce high thermal efficiency and lower carbon monoxide (CO) and hydrocarbon (HC) emissions, same time it produces more smoke, particulate matter (PM) and oxides of nitrogen (NOx) and it is difficult to simultaneously to reduces NOx and smoke density due to a trade-off between NOx and smoke. 2 The reduction of NOx and smoke emissions by Exhaust Gas Recirculation (EGR), deNOx catalytic converter, high-pressure injection and oxygenated fuels were tried by many researchers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Butanol-Diesel Blends in a Compression Ignition Engineto Reduce Emission

2017

Rasayan J Chem

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In this investigation butanol was added to diesel with known percentages to improve the performance of a diesel engine. To avoid separation, Span 80 emulsifier added to the oxygen enriched fuel with water to get suitable blends. The experiment has been conducted in a four stroke, single cylinder diesel engine having different loads at constant speed were investigated. The oxides of nitrogen, carbon monoxide, and smoke opacity were found to be minimum for D70 (70:29:1) blend compared with the other blends. The effect of butanol diesel blends is found to reduce smoke density and nitrogen oxide emissions from a diesel engine. The brake thermal efficiency of the butanol blends decreases with increase in butanol percentage in the blends. CO emission decreased by 42% and 14% for 80D and 75D blends respectively at full load. The HC emissions decreased by 30% and 31% for D80 and D75 blend at full load compared with neat diesel fuel. Smoke density decreased 20 HSU at full load for D70 due to a complete combustion. The maximum NOx emission reduction of 29% for D65 and followed by 16%, 11% and 6% for D70, D75 and D80 blends respectively at full load.

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Influence of properties of various common bio-fuels on the combustion and emission characteristics of high-speed DI (direct injection) diesel engine: Vegetable oil, bio-diesel, ethanol, n-butanol, diethyl ether

Cited by 289 publications

References 26 publications

Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol

Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol

Effect of Ethanol on Performance and Durability of a Diesel Common Rail High Pressure Fuel Pump

Effect of Butanol-Diesel Blends in a Compression Ignition Engineto Reduce Emission

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