The Effects of Fuel Sulfur Concentration on Regulated and Unregulated Heavy-Duty Diesel Emissions

Opris, Cornelius N.; Gratz, Linda D.; Bagley, Susan T.; Baumgard, Kirby J.; Leddy, David G.; Johnson, John H.

doi:10.4271/930730

Cited by 23 publications

(18 citation statements)

References 17 publications

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“…38 The reduction of the total particle mass from the RME combustion can also be attributed to the significantly lower sulfur content of 5 mg‚kg -1 as compared to 46 mg‚kg -1 for ULSD. 39 Effects of the EGR. Figure 7 shows the effects of EGR (10% and 20%) on the cylinder pressure and heat release rate for ULSD and RME fueling for the engine condition 2.…”

Section: Resultsmentioning

confidence: 99%

Effects on Particle Size Distribution from the Diesel Engine Operating on RME-Biodiesel with EGR

2006

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In the present study, the effects of the neat biodiesel (rapeseed methyl ester, RME) fueled diesel engine with the use of EGR on the particle size distribution were examined. The combustion of REM significantly improves the engine smoke and total particle mass but increases both NO x and particle concentration with low aerodynamic diameters (<0.091 µm) when compared to the diesel (ultralow sulfur diesel, ULSD) fueled engine. Although the particle size and mass distribution were not affected significantly by the different EGR additions, the particle total number and mass were increased considerably for both fuels. For the RME fueled engine, the EGR addition reduces the particles in the lowest aerodynamic diameter measured (0.046 µm). The use of EGR better suits the RME combustion, as apart from resulting in the higher NO x reduction, it maintained the smoke (soot, particulate matter) at relatively low levels. The results are also confirming that it is challenging to reduce simultaneously total particle mass without increasing the number of particles at low aerodynamic diameters. Furthermore, the lower RME calorific value compared to ULSD results in increased fuel consumption, although the engine efficiency was not noticeably affected.

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Section: Resultsmentioning

confidence: 99%

Effects on Particle Size Distribution from the Diesel Engine Operating on RME-Biodiesel with EGR

2006

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“…Modem on-highway diesel fiiel contains less than 0.05% sulfiir by mass, as opposed to previous diesel fuel which had 0.15 to 0.3% sulfur by mass. The impact of sulfiir content on diesel engine particulate emission reduaion has been demonstrated by several researchers [46,47,48,49,50].…”

Section: Figure 21 Typical Diesel Particulate Compositionmentioning

confidence: 96%

Determination of particulate and unburned hydrocarbon emissions from diesel engines fueled with biodiesel

Chang

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“…Accumulation mode particle formation takes place due to adsorption of organic substances on primary carbon spheres along with sulfates [168]. It has been observed from several experimental studies that formation of numerous nuclei-mode particles takes place because of higher sulfur content in the test fuel [173,174].…”

Section: Particulate Emissionsmentioning

confidence: 99%

Review of Experimental and Computational Studies on Spray, Combustion, Performance, and Emission Characteristics of Biodiesel Fueled Engines

Ágarwal

Park

Dhar

et al. 2018

Journal of Energy Resources Technology

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Biodiesel has emerged as a suitable alternative to mineral diesel in compression ignition (CI) engines in order to ensure global energy security and to reduce engine out emissions in near future. Biodiesel derived from various feedstocks available worldwide fits well in the current fuel supply arrangement for transport sector. However, biodiesel as an alternative transportation fuel has been extensively investigated because of differences in its important fuel properties compared with baseline mineral diesel. Since fuel properties greatly influence spray development, combustion, and emission formation in internal combustion (IC) engines, a number of experimental and computational studies on biodiesel usage in CI engines have been performed to determine its brake thermal efficiency (BTE), gaseous emissions, durability, etc., by various researchers using variety of engines and feedstocks. In the present paper, a critical review of the effect of biodiesel's fuel properties on engine performance, emissions, and combustion characteristics in existing diesel engines vis-a-vis conventional diesel has been undertaken. In addition, the progress and advances of numerical modeling involving biodiesel are also reviewed to determine the effect of fuel properties on spray evolution and development of reaction mechanisms for biodiesel combustion simulations. Fuel properties are discussed in two categories: physical and chemical properties, which are key parameters affecting spray and combustion processes. Subsequent sections review spray, combustion, emissions, and performance characteristics of biodiesels under various engine operation conditions. In the last section of this review paper, numerical modeling of biodiesel covering recent numerical models and schemes to understand the behavior of biodiesel combustion and pollutants formation is included. This review paper comprehensively summarizes biodiesel fuel's (BDFs) spray, combustion, and emission characteristics using experimental and numerical approaches. Limitations and scope for future studies are discussed in each section.

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The Effects of Fuel Sulfur Concentration on Regulated and Unregulated Heavy-Duty Diesel Emissions

Cited by 23 publications

References 17 publications

Effects on Particle Size Distribution from the Diesel Engine Operating on RME-Biodiesel with EGR

Effects on Particle Size Distribution from the Diesel Engine Operating on RME-Biodiesel with EGR

Determination of particulate and unburned hydrocarbon emissions from diesel engines fueled with biodiesel

Review of Experimental and Computational Studies on Spray, Combustion, Performance, and Emission Characteristics of Biodiesel Fueled Engines

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