Alcohol Fuels in Compression Ignition Engines

Pipicelli, Michele; Luca, Giuseppe Di; Ianniello, Roberto; Gimelli, Alfredo; Tunestål, Per

doi:10.1007/978-981-16-8751-8_2

Cited by 5 publications

(2 citation statements)

References 71 publications

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“…These alcohols were used to prepare the fuel blends for two different oxygen mass fractions of 2.5% and 5% oxygen content (denoted by M2.5, E2.5, B2.5 and M5, E5, B5). Table 3 showed the important fuel properties of base fuel including density calorific value (CV) and oxygen content, it indicates that methanol, ethanol and butanol consist of 50%, T A B L E 3 Essential properties of base fuels [32][33][34][35] Base Fuel Density (kg/m shows decreasing trend in alcohols as molecular weight increases. Table 4 showed the requirement of volume fraction of these three alcohols to prepare the fuel blends for desired oxygen content along with calculated density and CV of oxygenated blends.…”

Section: Fuel Preparation and Calculation Of Oxygen Contentmentioning

confidence: 99%

Effect of inherent oxygen mass fraction of alcohol blends with diesel on combustion and emission parameters

Sahu

Shukla

2022

Env Prog and Sustain Energy

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Increasing air pollution and implementation of stricter emission regulations led to the research for the clean combustion concept of combustion engines. To resolve this concern, it is important to look for a clean and stable combustion concept that can adapt easily to an old existing engine as well as newer engines. The present study was performed to investigate the combustion stability and emission for blends of methanol (M), ethanol (E), and butanol (B) to evaluate the effect of their inherent oxygen content. Alcohol blends were prepared for two different oxygen mass fractions of 2.5% and 5% oxygen, m/m (defined as M2.5, E2.5, B2.5 and M5, E5, B5). For this, different volume fraction of respective alcohol was required (M2.5 and M5 contained 5.2% and 10.3% methanol respectively, E2.5 and E5 contained 7.4% and 14.8% ethanol respectively, B2.5 and B5 contained 11.7% and 23.3% butanol respectively).Detailed combustion analysis was performed for the alcohol blends (2.5% and 5% oxygen mass fraction) using the parameters like cycle-to-cycle analysis, coefficient of variation, combustion phasing etc. M5 showed the better stable combustion considering the lowest coefficient of variation for CA50 and indicated mean effective pressure. Moreover, the performance of E5 showed improved efficiency with brake thermal efficiency (BTE) of 27.94% and reduced brake specific fuel consumption. Significant reductions in hydrocarbon (HC), smoke and carbon dioxide (CO 2 ) emissions were recorded for 2.5% and 5% oxygenated condition. M5 showed lowest emission level among tested fuel with 20% lower oxide of nitrogen (NO) and 50% lower HC.

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Section: Fuel Preparation and Calculation Of Oxygen Contentmentioning

confidence: 99%

Effect of inherent oxygen mass fraction of alcohol blends with diesel on combustion and emission parameters

Sahu

Shukla

2022

Env Prog and Sustain Energy

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“…However, integrating methanol into marine ICEs presents a significant challenge owing to its high latent heat of vaporisation [9]. Compared to diesel, methanol exhibits nearly half the lower heating value, adding another degree of complexity to its integration [11], [13], [14]. Consequently, longer injection duration and increased mass quantities are required to achieve the same power output.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Methanol Sprays in Marine Internal Combustion Engines: a Case Study for Port Fuel Injection Systems

Zoumpourlos,

Coraddu,

Geertsma

et al. 2023

Moses

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Methanol has emerged as a cost-effective and scalable alternative fuel for the maritime sector. However, the use of methanol in marine engines is limited by the unknown characteristics of methanol sprays when introduced through retrofitted port fuel injection (PFI) systems. The present study investigates the characteristics of methanol sprays under relevant conditions for marine engines, such as low injection pressure PFI. The primary objective of this research is to advance knowledge into key spray characteristics, including spray penetration, droplet size, atomization quality, and evaporation. The proposed methodology evaluates the efficacy of state-of-the-art computational fluid dynamics (CFD) models in simulating PFI marine engine spray conditions. Moreover, the study compares the performance of the Kelvin-Helmholtz (KH-RT) and Taylor Analogy Breakup (TAB) droplet breakup models under low injection pressure conditions. The results demonstrated that the KH-RT model does not predict any droplet breakup occurrence suggesting that the TAB model is more suitable for the given conditions. Furthermore, the liquid penetration of the spray was observed to align with the outcomes reported in previous experimental literature on methanol sprays. Nevertheless, the droplet sizes for low pressure injectors appear relatively large, indicating poor spray atomization, which impedes rapid evaporation and increases the risk of wall wetting in the inlet manifold and combustion chamber.

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Hydrotreated Vegetable Oils for Compression Ignition Engines—The Way Toward a Sustainable Transport

Pipicelli

Luca²,

Ianniello³

2023

Energy, Environment, and Sustainability

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Alcohol Fuels in Compression Ignition Engines

Cited by 5 publications

References 71 publications

Effect of inherent oxygen mass fraction of alcohol blends with diesel on combustion and emission parameters

Effect of inherent oxygen mass fraction of alcohol blends with diesel on combustion and emission parameters

Evaluation of Methanol Sprays in Marine Internal Combustion Engines: a Case Study for Port Fuel Injection Systems

Hydrotreated Vegetable Oils for Compression Ignition Engines—The Way Toward a Sustainable Transport

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