Experimental analysis of a small engine operating on diesel–natural gas and soybean vegetable oil–natural gas

Telli, Giovani Dambros; Altafini, Carlos Roberto; Rosa, Josimar Souza; Costa, Carlos Alberto

doi:10.1007/s40430-018-1469-x

Cited by 7 publications

(5 citation statements)

References 34 publications

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“…Figure 2 presents the in-cylinder pressure of the single-zone zero-dimensional model in relation to the experimental data reported by Telli et al (2020). The modelling verification was carried out for IMEP = 4 bar, CA50 = 4 CAD ATDC, CR = 14:1, N = 1800 rpm, Tin = 406 K, Pin = 1.4 bar,  = 1.4 and H2O injected = 7% mass basis.…”

Section: Operating Conditions and Model Validationmentioning

confidence: 99%

“…Table 2 presents the engine's geometric configurations used in the numerical analysis with the single-zone model. The numerical model was verified using Telli et al (2020) experimental data from an ethanol HCCI cylinder with the same configurations shown in Table 2. In the experiments, the threecylinder engine was coupled to an electric generator, operating at a constant speed of 1800 rpm and with 10 kW of electric power.…”

Section: Operating Conditions and Model Validationmentioning

confidence: 99%

“…These engines generate their power through the combustion process, where fuels are mostly of fossil origin, resulting in environmental pollutions. Therefore, the use of ICE in transportation is a major issue in relation to global warming, pollutant emissions and health hazards (Punov et al, 2017;Telli et al, 2018). Another concern is the finite nature of fossil fuel resources, which are diminishing over time.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study of Water Addition on the Combustion Characteristics in an Hcci Ethanol Engine

Telli

Rosa²,

Costa³

et al. 2022

RETERM

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Low-temperature combustion modes have attracted global attention in recent years, especially the homogeneous charge compression ignition (HCCI) mode. The HCCI combustion produces high-speed combustion, achieving relatively high thermal efficiencies while emitting low NOX and soot. However, due to the lack of direct control to start the combustion, one of the main challenges in this type of engine is to ensure that auto-ignition occurs close to the top dead center for a wide operation range. There are a few combustion phase control techniques to solve this limitation, and one of them is water injection. In this regard, this paper explores the influence of water concentration in an ethanol HCCI engine as a form of combustion phasing control. The work was conducted numerically using a zero-dimensional single-zone model with a chemical kinetic mechanism containing 56 species and 383 reactions. The numerical model results were well agreed with the reported experimental data. The water fraction ranged from 0 to 18% by mass at 3% intervals. The results demonstrate that water injection is an efficient strategy to control the combustion phasing by adjusting the charge reactivity. The increase in water fraction reduced in-cylinder pressure and heat release rates. Furthermore, the combustion phase was advanced, the combustion duration was extended, and thermal efficiency was about 44.3% with the increase in water concentration.

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Section: Operating Conditions and Model Validationmentioning

confidence: 99%

Section: Operating Conditions and Model Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Study of Water Addition on the Combustion Characteristics in an Hcci Ethanol Engine

Telli

Rosa²,

Costa³

et al. 2022

RETERM

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“…Thus, the analysis was conducted on the same mass basis. The methods applied to calculate specific fuel consumption, based on the electric power of the alternator, was also used by De Oliveira et al [33], Vailatti et al [46], and Telli et al [47]. For specific emissions calculations, Eqs.…”

Section: Main Calculated Operational Parametersmentioning

confidence: 99%

Wet ethanol fumigation on a compression ignition engine: effects of air intake throttled

Rosa

Altafini

Wander

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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New techniques for the use of renewable fuels have been proposed by researchers around the world, seeking to reduce our dependence on fossil fuels and emissions of harmful gases. For compression ignition engines, fumigation stands out for allowing more significant replacements than other dual-fuel techniques, and also for not requiring modifications to the original engine structure. In this context, wet ethanol has emerged as one of the most viable fuels for port fuel injection due to its low reactivity and its renewable origin. This paper investigates the effects caused on the compression ignition engine by the use of diesel oil and wet ethanol by fumigation method and an air restriction in the engine intake through a throttle. The used engine was a small single-cylinder, coupled to an alternator, with constant load and engine speed. The fumigation fuel was wet ethanol with four different water concentrations, and different fractions of diesel oil substitution were tested. The results indicated that the use of ethanol and wet ethanol by the fumigation method increases conversion efficiency by up to 10% compared to the baseline test. However, the reduction in the intake airflow always causes a decrease in this efficiency. Intake air throttled also provided an increase in exhaust gas opacity compared to the free airflow conditions, but it is reduced when compared to the baseline test. Concerning specific emissions, carbon monoxide has higher emission levels when ethanol fumigation is used compared to the baseline condition. Under the same conditions, nitrogen oxide emissions are reduced.

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“…Generally, renewable fuels have the potential to achieve near zero CO 2 emissions in Well-to-Wheel balance, decreasing greenhouse gas emissions levels [3]. In the literature, many renewable fuels have been investigated and have emerged as a promising candidate to replace conventional fuels, such as biodiesel [4,5], ethanol [6,7] and straight vegetable oils [8,9].…”

Section: Introductionmentioning

confidence: 99%

Study of the influence of adding Al2O3 nanoparticles to biodiesel on the performance and emissions characteristics of a diesel engine

Moresco Smaniotto,

Rosa,

Dambros Telli

2024

Sci. cum Ind.

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The use of biodiesel in compression ignition (CI) engines has great potential to reduce emissions and the dependence on fossil fuels. However, the complete adoption of biodiesel in CI engines is limited by several drawbacks. A promising solution to these problems is the addition of nanoparticles to biodiesel or diesel-biodiesel blends. Hence, this paper studies the impact of adding aluminum oxide (Al2O3) nanoparticles on the performance and emission characteristics of a diesel engine running on biodiesel and a mixture of diesel and biodiesel. Al2O3 nanoparticles were added at concentrations of 50, 100 and 150 ppm to biodiesel (B100) and a mixture of 50 % biodiesel and 50 % commercial diesel (B50). The results indicated an increase in fuel conversion efficiency and a reduction in specific fuel consumption. The highest fuel conversion efficiency was 26.5 % for B50 with 100 ppm of Al2O3, indicating an improvement of around 28.6 % compared to diesel fuel (B0). In general, CO emissions were reduced with the addition of nanoparticles, with a maximum reduction of 42.8 % for B100 with 50 ppm Al2O3 compared to B0. The highest reduction in NOX emissions was 30.3 % for B50 with 100 ppm Al2O3 compared to pure diesel B0.

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Experimental analysis of a small engine operating on diesel–natural gas and soybean vegetable oil–natural gas

Cited by 7 publications

References 34 publications

Numerical Study of Water Addition on the Combustion Characteristics in an Hcci Ethanol Engine

Numerical Study of Water Addition on the Combustion Characteristics in an Hcci Ethanol Engine

Wet ethanol fumigation on a compression ignition engine: effects of air intake throttled

Study of the influence of adding Al2O3 nanoparticles to biodiesel on the performance and emissions characteristics of a diesel engine

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