Comparisons of NO emissions and soot concentrations from biodiesel-fuelled diesel engine

Song, Hoseok; Tompkins, Brandon T.; Bittle, Joshua A.; Jacobs, Timothy J.

doi:10.1016/j.fuel.2012.01.004

Cited by 63 publications

(36 citation statements)

References 47 publications

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“…The traces in Figure 6 do not exhibit remarkable differences; B40 shows the greatest increase in NO x , which is evident for values greater than 3000 rpm. Such increase in NO x emission can be explained by considering the effect of temperature, the differences in fuel chemistry, spray properties, and ignition delay that affect the duration of premixed and diffusion burn regimes [4,9,19].…”

Section: Improvement Trends For Internal Combustion Enginesmentioning

confidence: 99%

“…In regard to NO x emission, somehow contradictory conclusions were found, since there are numerous factors, each has its own relative importance according to the engine technology and operating conditions of the blended fuel [9][10][11][12][13]. Physical properties, chemical composition, and structure of the biodiesel alter the fuel injection and ignition process, and then the combustion development and the engine exhaust emissions [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Waste Cooking Oil Biodiesel Blends on Performance and Emissions from a CRDI Diesel Engine

Chiatti¹,

Chiavola²,

Recco³

2018

Improvement Trends for Internal Combustion Engines

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The employment of biofuels in blends with diesel oil proved to attain a reduced environmental impact without compromising the engine performance. Among biofuels, waste cooking oil offers the advantages of its reduced raw material cost in comparison with fresh vegetable oil cost; it also eliminates the environmental impacts caused by its disposal. Although a great number of researches has been devoted to biodiesel combustion in engines and pollutant emissions, few studies can be found on light duty diesel engine equipped with up-to-date technologies. This work aims at investigating the impact of waste cooking oil percentage in blends with diesel oil on the performance and emission characteristics of an up-to-date light and compact common rail diesel engine whose main application is in microcars and in urban vehicles. A comprehensive experimental activity was performed in the engine complete operative field. The comparison of the results with those obtained with standard ultralow-sulfur diesel highlighted that the engine performance was quite similar for B20 and diesel oil. B40 suffered for the lower caloric value in regard to diesel. A reduction in CO and HC was obtained with biodiesel blends, along with an increase in NO x . Particulate emissions were also reduced for biodiesel blends; the mean size of particles was smaller as regards diesel oil.

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Section: Improvement Trends For Internal Combustion Enginesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Waste Cooking Oil Biodiesel Blends on Performance and Emissions from a CRDI Diesel Engine

Chiatti¹,

Chiavola²,

Recco³

2018

Improvement Trends for Internal Combustion Engines

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“…In order to guarantee the same available load, the injected fuel is increased with biodiesel content in the blend, due to the lower energy content of biodiesel; temperature is maintained more or less constant, while the oxygen content in the exhaust is affected together with NO production, on the other hand. Differences in chemical and physical properties of biodiesel have also a great influence on NO formation [1,27].…”

Section: Resultsmentioning

confidence: 99%

“…Literature shows that feedstock type, chemical composition, and physical properties have a great influence on injection process, fuel ignition, combustion development, and exhaust gas composition. Moreover, the results are significantly affected by the blends ratios, specific engine configuration, and testing [1][2][3]. In general, a decrease of particulate emission, hydrocarbons, and carbon monoxide is observed with increasing of biodiesel content in the blends; biodiesel leads to increased nitrogen oxides (NO ) compared to petroleum diesel [4,5].…”

Section: Introductionmentioning

confidence: 99%

Emission Performance of a Diesel Engine Fuelled with Petrol Diesel, Green Diesel, and Waste Cooking Oil Blends

Chiavola

Recco

2018

Journal of Combustion

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The purpose of this paper is to conduct an experimental research on the impact of mixing ratio of biodiesel from waste cooking oil and an innovative diesel fuel (in which a renewable component is contained) on the emissions of an up-to-date light and compact small engine that has a leading role in city cars and urban vehicles. Two blends' mixing ratios (20% and 40% by volume) were tested and the results were compared to those obtained when the engine was operated with low sulfur diesel (ULSD) and ULSD blended with 15% by volume of renewable diesel. The results indicate that diesel+ enhances CO and HC emissions in the exhaust as regards ULSD. Blending diesel+ with WCO causes a further reduction for most of the engine operative field. Concerning particulate emission, accumulation mode dominates for all fuels. Diesel+ is always characterized by lower mean diameters as regards ULSD. The addition of WCO further reduces the court mean diameter. Particle number concentration obtained by fuelling the engine with B40 is the lowest as regards all the other tested fuels. Concerning NO , a moderate increase of the emission was observed when fuelling the engine with diesel+, net or in blends.

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“…But lower No emissions can be achieved with the application of exhaust gas recirculation operated with biodiesel, but it is not for diesel operation. [21]. As the injection pressure increase soot emissions are decreased but NOx emissions increased for biodiesel and its blends compare to diesel.…”

Section: Research Articlementioning

confidence: 99%

Effect of Injector Opening Pressure on Dairy Scum Biodiesel Operated Diesel Engine

Channappagoudra¹,

Ramesh²,

Manavendra³

2018

IJCAR

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Comparisons of NO emissions and soot concentrations from biodiesel-fuelled diesel engine

Cited by 63 publications

References 47 publications

Effect of Waste Cooking Oil Biodiesel Blends on Performance and Emissions from a CRDI Diesel Engine

Effect of Waste Cooking Oil Biodiesel Blends on Performance and Emissions from a CRDI Diesel Engine

Emission Performance of a Diesel Engine Fuelled with Petrol Diesel, Green Diesel, and Waste Cooking Oil Blends

Effect of Injector Opening Pressure on Dairy Scum Biodiesel Operated Diesel Engine

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