NO
            <sub>X</sub>
            based comparative analysis of a CI engine fueled with water in diesel emulsion

Okumuş, Fatih; Kaya, Cenk; Kökkülünk, Görkem

doi:10.1080/15567036.2020.1839147

Cited by 6 publications

(4 citation statements)

References 57 publications

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“…The decrease in the maximum temperatures in the cylinder due to the high latent heat of water evaporation played a role in the emergence of this situation. 40,41…”

Section: Resultsmentioning

confidence: 99%

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Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Sönmez

Okumuş

Safa

et al. 2022

Energy & Environment

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The worldwide increasing energy demand, interest in alternative energy production and limited resources have made it inevitable to turn to recovering wastes, such as waste tires. Waste tires with annual increase of 2%, corresponding to significant reserves all over the world, brings a serious environmental pollution. In this study, energy recovery was planned considering environmental pollution caused by waste tires and waste cooking oils, both. Accordingly, performance and emission analyzes were carried out using fuels formed by mixing pyrolytic oil obtained from waste tires (WTPO) and biodiesel obtained from waste cooking oil with diesel fuel in a single cylinder engine. The experiments are carried out at 2800 rpm and at full load condition. The findings of engine performance and exhaust emissions were evaluated. While the maximum brake specific fuel consumption (Bsfc) value was determined as 2100 g/kWh for blend fuel of 30% biodiesel and 10% WTPO in diesel fuel, the maximum brake thermal efficiency (Bte) value was determined as 33.541% for P30 fuel. The crank angles yielding maximum in-cylinder pressures approach to top dead center, with increasing biodiesel fraction while keeping WTPO fraction constant. While the increase in the amount of WTPO in the test fuels has an effect on the increase of CO emissions, and increasing biodiesel ratio has reduced the CO emissions. Also the use of biodiesel without WTPO increases NOx emissions slightly, while providing an effective reduction at high WTPO fractions. At low WTPO fractions, biodiesel has reduced HC emissions, while at high WTPO fractions has increased.

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“…The decrease in the maximum temperatures in the cylinder due to the high latent heat of water evaporation played a role in the emergence of this situation. 40,41…”

Section: Resultsmentioning

confidence: 99%

“…The decrease in the maximum temperatures in the cylinder due to the high latent heat of water evaporation played a role in the emergence of this situation. 40,41 Hydrocarbons (HC) emissions. The air-fuel mixture near the cylinder wall is significantly lower than the center of the cylinder.…”

Section: Exhaust Emissionsmentioning

confidence: 99%

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Sönmez

Okumuş

Safa

et al. 2022

Energy & Environment

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“…In contrast, diesel engines significantly contribute to environmental pollution, especially through substances that are harmful to human health, like hydrocarbons (HC), carbon monoxide (CO), particulate matter (PM), and nitrogen oxides (NOx). The use of exhaust gas recirculation (EGR), various fuel injection techniques, and alternative fuels like biodiesel derived from vegetable oil and animal fat are just a few of the numerous studies scientists continue to perform to decrease these harmful emissions [1]. Among these, due to its excellent ability to reduce hazardous emissions, especially NOx and PM, water diesel emulsion fuel has emerged as a favored alternative fuel for diesel engines.…”

Section: Introductionmentioning

confidence: 99%

“…This study aims to investigate diesel engines' performance characteristics and emissions by mixing water, Al 2 O 3 nanoparticles, and diesel fuel at two stages of experimental work. Based on previous studies, using a water-diesel emulsion effectively reduced NOx emission [1,3,6,[24][25][26][27][28][29][30][31]. In contrast, many studies showed a decrease in brake thermal efficiency (BTE) and an increase in brake-specific fuel consumption (BSFC) with an increasing water ratio in the emulsion fuel due to a lower heating value [32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Combined Impact of Water–Diesel Emulsion and Al2O3 Nanoparticles on the Performance and the Emissions from a Diesel Engine via the Design of Experiment

Mostafa,

Mourad,

Mustafa

et al. 2023

Designs

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This study aims to assess the impact of the water ratio and nanoparticle concentration of neat diesel fuel on the performance characteristics of and exhaust gas emissions from diesel engines. The experimental tests were conducted in two stages. In the first stage, the effects of adding water to neat diesel fuel in ratios of 2.5% and 5% on engine performance and emissions characteristics were examined and compared to those of neat diesel at a constant engine speed of 3000 rpm under three different engine loads. A response surface methodology (RSM) based on a central composite design (CCD) was utilized to simulate the design of the experiment. According to the test results, adding water to neat diesel fuel increased the brake-specific fuel consumption and reduced the brake thermal efficiency compared to neat diesel fuel. In the examination of exhaust emissions, hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) in the tested fuel containing 2.5% of water were decreased in comparison to pure diesel fuel by 16.62%, 21.56%, and 60.18%, respectively, on average, through engine loading. In the second stage, due to the trade-off between emissions and performance, the emulsion fuel containing 2.5% of water is chosen as the best emulsion from the previous stage and mixed with aluminum oxide nanoparticles at two dose levels (50 and 100 ppm). With the same engine conditions, the emulsion fuel mixed with 50 ppm of aluminum oxide nanoparticles exhibited the best performance and the lowest emissions compared to the other evaluated fuels. The outcomes of the investigations showed that a low concentration of 50 ppm with a small amount of 11 nm of aluminum oxide nanoparticles combined with a water diesel emulsion is a successful method for improving diesel engine performance while lowering emissions. Additionally, it was found that the mathematical model could accurately predict engine performance parameters and pollution characteristics.

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Waste to energy conversion: Pyrolytic oil and biodiesel as a renewable fuel blends on diesel engine combustion, performance, and emissions

Sönmez

Okumuş

Kaya

et al. 2021

International Journal of Green Energy

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NO _X based comparative analysis of a CI engine fueled with water in diesel emulsion

Cited by 6 publications

References 57 publications

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Investigating the Combined Impact of Water–Diesel Emulsion and Al2O3 Nanoparticles on the Performance and the Emissions from a Diesel Engine via the Design of Experiment

Waste to energy conversion: Pyrolytic oil and biodiesel as a renewable fuel blends on diesel engine combustion, performance, and emissions

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NO X based comparative analysis of a CI engine fueled with water in diesel emulsion

Cited by 6 publications

References 57 publications

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Investigating the Combined Impact of Water–Diesel Emulsion and Al2O3 Nanoparticles on the Performance and the Emissions from a Diesel Engine via the Design of Experiment

Waste to energy conversion: Pyrolytic oil and biodiesel as a renewable fuel blends on diesel engine combustion, performance, and emissions

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Resources

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NO _X based comparative analysis of a CI engine fueled with water in diesel emulsion