Time resolved in-situ biodiesel combustion visualization using engine endoscopy

Ágarwal, Avinash Kumar; Agarwal, Anuj; Singh, Akhilendra Pratap

doi:10.1016/j.measurement.2015.03.008

Cited by 25 publications

(11 citation statements)

References 24 publications

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“…The atomization of biodiesel is the consequence of higher values of surface tension and viscosity comparative with diesel fuel. The results are in accordance with similar rapports from various authors [6,9,12,14].Calculation of combustion indicates that less air is required for biodiesel due to higher content of oxygen.…”

Section: Discussionsupporting

confidence: 91%

“…Thus, the process of oxidation increases the viscosity of biodiesel. In addition, oxidation increases the acid value of the fuel, the color can change from yellow to brown with the appearance of a paint smell and solid deposits appears in the engine fuel system (pipes and filters) [11,12]. For example, calculations were made for burning diesel and biodiesel.…”

Section: Oxidation Stabilitymentioning

confidence: 99%

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Considerations on the combustion of biofuels in compression ignition engines

et al. 2019

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Biofuels are considered to be attractive alternative fuels due to rising oil prices and the depletion of fossil sources. It is produced by a process of transesterification of vegetable oils and animal fats with an alcohol in the presence of a catalyst. At present, biodiesel and bioethanol are considered solutions, and almost all EU countries have prepared a policy on the production and use of biodiesel in the transport and heating sectors. Biodiesel has certain advantages, such as a higher number of cetan, biodegradability, low sulfur content and aromatic content, and lower carbon monoxide emissions, unburned hydrocarbons and particulate matter. One of the main issues related to biodiesel and biodiesel blends is the high viscosity of the fuel. Among the biodiesel properties, density, viscosity and heating value affect engine performance and emission characteristics. The presented paper highlights the differences that occur in comparison to the classical fuels and the performances obtained when using biodiesel.

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Section: Discussionsupporting

confidence: 91%

Section: Oxidation Stabilitymentioning

confidence: 99%

Considerations on the combustion of biofuels in compression ignition engines

et al. 2019

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“…Combustion chamber images of mineral diesel and biodiesel blends also confirmed relatively earlier start of combustion in case of 20% and 50% biodiesel fueled engines ( Fig. 15) [113]. Oxygenated molecules of biodiesel ensure higher reactivity that results in earlier SOC.…”

Section: Combustion Characteristics Of Biodieselmentioning

confidence: 61%

“…For all injection timings in multiple fuel injection mode, combustion duration of KOME20 and KOME50 were longer than [113] mineral diesel due to relatively inferior fuel-air mixing characteristics and requirement of larger fuel quantity compared to mineral diesel with increasing concentration of biodiesel in test blends [119].…”

Section: Effect Of Fuel Injection Strategies Investigations Of Combumentioning

confidence: 96%

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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“…Flame luminosity in the combustion image depends on the radiations emitted by the soot particles formed inside the combustion chamber [20]. So the standard color CCD camera can only capture the soot's luminosity.…”

Section: Flame Image Analysismentioning

confidence: 99%

Visualization of combustion performance and emission characteristics of a four-cylinder diesel engine at various injection timings and engine loads

Yin

Shengji

et al. 2017

J Braz. Soc. Mech. Sci. Eng.

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In this study, the effects of injection timings on engine combustion, performance, and emission characteristics were investigated experimentally using a four-cylinder diesel engine equipped with an endoscopic visualization system. The experiments were conducted at constant speed (1500 rpm) with different start of injection timings and two loads (10 and 25% load, respectively). Premixed combustion was found from the heat release rate and combustion images with advanced injection. Additionally, larger area of luminous flames was obtained for retarded injection timing and higher engine load. It was also found that the area of soot distribution and flame temperature distribution decreased for advanced injection timing. NO x emission increased for advanced injection, however, an opposite trend was observed for lower load.

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Time resolved in-situ biodiesel combustion visualization using engine endoscopy

Cited by 25 publications

References 24 publications

Considerations on the combustion of biofuels in compression ignition engines

Considerations on the combustion of biofuels in compression ignition engines

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

Visualization of combustion performance and emission characteristics of a four-cylinder diesel engine at various injection timings and engine loads

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