Lubricity of ethanol–diesel blends – Study with the HFRR method

Kuszewski, Hubert; Jaworski, Artur J.; Ustrzycki, A.

doi:10.1016/j.fuel.2017.07.046

Cited by 38 publications

(29 citation statements)

References 27 publications

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“…The Department of Combustion Engines and Transport of the Rzeszow University of Technology has worked for many years now to reduce the harmful effects of transport on the environment. This concerns the improvement of the internal combustion engines and vehicles design, and the search for alternative fuels (Kuszewski et al 2017a , b ). At present, exhaust pollutants emission testing for passenger car engines is conducted.…”

Section: Experimental Methodologymentioning

confidence: 99%

Analysis of the repeatability of the exhaust pollutants emission research results for cold and hot starts under controlled driving cycle conditions

Jaworski

Kuszewski

Ustrzycki

et al. 2018

Environ Sci Pollut Res

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Measurement of car engines exhaust pollutants emissions is very important because of their harmful effects on the environment. This article presents the assessment of repeatability of the passenger car engine exhaust pollutants emission research results obtained in the conditions of a chassis dynamometer. The research was conducted in a climate chamber, enabling the temperature conditions to be determined from − 20 to + 30 °C. The emission of CO, CH4, CO2, NOX, THC, and NMHC was subjected to the analysis. The aim of the research is to draw attention to the accuracy of the pollutant emission research results in driving cycles, and the comparison of pollutant emission results and their repeatability obtained in successive NEDC cycles under cold and hot start conditions. The results of the analysis show that, in the case of a small number of measurements, the results repeatability analysis is necessary for a proper interpretation of the pollutant emission results on the basis of the mean value. According to the authors’ judgment, it is beneficial to determine the coefficient of variation for a more complete assessment of exhaust emission result repeatability obtained from a small number of measurements. This parameter is rarely presented by the authors of papers on exhaust components emission research.

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Section: Experimental Methodologymentioning

confidence: 99%

Analysis of the repeatability of the exhaust pollutants emission research results for cold and hot starts under controlled driving cycle conditions

Jaworski

Kuszewski

Ustrzycki

et al. 2018

Environ Sci Pollut Res

Self Cite

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“…Firstly, ethanol is produced from raw material of plant or plant waste origin, qualifying as alternative renewable source of energy and, secondly, its high oxygen content and solubility in WPPO blends (Lapuerta et al, 2008;Shahir et al, 2014;Kwanchareon et al, 2007;Fernando and Hanna, 2004;Li et al, 2005). Several studies have, however, shown that an increase in the ethanol fraction decreases the autoignition properties of diesel because of its low propensity to auto-ignite (Chacartegui et al, 2007;Tutak et al, 2015;Hansen et al, 2005;Kwanchareon et al, 2007;Kim and Choi, 2008;Moon et al, 2013;Can et al, 2004;Rakopoulos et al, 2008;Yilmaz et al, 2014;Kuszewski et al, 2017). The cetane number-value of the blends with diesel decreases as the fraction of ethanol increases (Chacartegui et al, 2007;Hansen et al, 2005;Can et al, 2004;Kuszewski et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have, however, shown that an increase in the ethanol fraction decreases the autoignition properties of diesel because of its low propensity to auto-ignite (Chacartegui et al, 2007;Tutak et al, 2015;Hansen et al, 2005;Kwanchareon et al, 2007;Kim and Choi, 2008;Moon et al, 2013;Can et al, 2004;Rakopoulos et al, 2008;Yilmaz et al, 2014;Kuszewski et al, 2017). The cetane number-value of the blends with diesel decreases as the fraction of ethanol increases (Chacartegui et al, 2007;Hansen et al, 2005;Can et al, 2004;Kuszewski et al, 2017). Reduced cetane numbers (CN) fuel values are undesirable because of their nature to prolong ignition delay, which causes increased engine peak cylinder combustion pressures (Baczewski et al, 2015;Yanowitz et al, 2017), increased engine combustion noise and wear in addition to increased NO X emissions.…”

Section: Introductionmentioning

confidence: 99%

The effect of cetane number and oxygen content in the performance and emissions characteristics of a diesel engine using biodiesel blends

Maroa

Inambao²

2019

J. energy South. Afr.

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The growth in demand for power generation and energy from alternative fuels at low cost and friendly to the natural environment is increasing. This study used waste plastic pyrolysis oil (WPPO) and ethanol to apply direct blending of conventional diesel, WPPO and ethanol with 2-ethyl hexyl nitrate (EHN). The purpose was to improve the combustion and performance characteristics of the WPPO blends. The EHN has the potential to reduce emissions of carbon dioxide, carbon monoxide, unburnt hydrocarbon, oxides of nitrogen and particulate matter. Ethanol improves viscosity, miscibility, and the oxygen content of WPPO. Five mixing ratios were selected. The mixing ratio with EHN was based on total quantity of blended fuel at 0.01%. At 50% engine load, the brake specific fuel consumption was 0.043 g/kWh compared with CD at 0.04 g/kWh. The blend 90/WPPO5/E5 had the highest value of 14% for brake thermal efficiency, while on NO X emissions three blends 90/WPPO5/E5, 80/WPPO10/E10, 70/WPPO15/E15, had the lowest values of 384 ppm, 395 ppm, 414 ppm, compared with CD fuel at 424 ppm. The implication was that ethanol and WPPO blends can be used in diesel engine power generators as an alternative fuel with modification, as their respective densities of 792 kg/m 3 and 825 kg/m 3 are close to CD fuel's at 845 kg/m 3 . Additionally, these combinations with EHN reduced emissions more than earlier thought and improved engine performance, equalling that of conventional diesel fuel.

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“…As an additive in blends, an increase in the ethanol fraction decreases auto-ignition properties of the blends, due to ethanol's low propensity [57][58][59][60][61][62][63][64]. These findings report a decrease in the CN value of the blends as the fraction of ethanol increases as the main cause.…”

Section: Introductionmentioning

confidence: 94%

The Effect of Fuel Additives on Pyrorated Biodiesel Blends on the Performance of a Diesel Power Generator

Maroa¹,

Inambao²

2019

Adv. sci. technol. eng. syst. j.

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The demand for renewable energy sources such as waste pyrolysis plastic oil (WPPO), ethanol biofuel with high oxygen content is increasing globally. This study used blending of conventional diesel oil, waste plastic pyrolysis oil, ethanol and 2-ethyl hexyl nitrate (EHN) as additive. The purpose was to improve combustion, the ignition quality, and performance and emission characteristics of WPPO as an alternative source of energy. As an additive EHN reduces emissions of CO, CO2, UHC, NOX, and PM. On the other hand, the inclusion of ethanol purposed to improve the viscosity, increase the oxygen content of the blends, and increase miscibility of WPPO. The study utilized the following ratios, 50/WPPO25/E25, 60/WPPO20/E20, 70/WPPO15/E15, 80/WPPO10/E10 and 90/WPPO5/E5 for conventional diesel (CD), WPPO and ethanol and EHN respectively. The ratio of the additive was determined by the percentage method based on the total quantity of the blended fuel and was calculated as 0.001 %. A complete Miscibility was observed to avoid phase separation during the study and experimentation, for the blended ratios of WPPO. The testing for performance and emission characteristics was conducted on a fixed bed, water-cooled, single cylinder diesel generator engine. The results were compared to ASTM standards and discussed using tables and figures. The results conclusively show very close densities of 792 kg/m 3 , 963 kg/m 3 , 825 kg/m 3 for WPPO, ethanol, EHN respectively, which are close to CD fuel at 845 kg/m 3 .

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Lubricity of ethanol–diesel blends – Study with the HFRR method

Cited by 38 publications

References 27 publications

Analysis of the repeatability of the exhaust pollutants emission research results for cold and hot starts under controlled driving cycle conditions

Analysis of the repeatability of the exhaust pollutants emission research results for cold and hot starts under controlled driving cycle conditions

The effect of cetane number and oxygen content in the performance and emissions characteristics of a diesel engine using biodiesel blends

The Effect of Fuel Additives on Pyrorated Biodiesel Blends on the Performance of a Diesel Power Generator

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