Characterization of pure and blended biodiesel spray in a compression ignition engine by means of advanced diagnostics and 1D model

Mancaruso, Ezio; Perozziello, Carmela; Sequino, Luigi; Vaglieco, Bianca Maria

doi:10.1016/j.fuel.2018.11.099

Cited by 15 publications

(5 citation statements)

References 46 publications

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“…Since biodiesels are different compared to petroleum-based diesel fuels in density, viscosity and surface tension [51,52], they can be further investigated in terms of their spray behaviour. Hence, it is important to perform research on the macroscopic and microscopic spray characteristics of alternative diesel fuels to figure out the effects of those fuels on the spraying process.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of spray characteristics of ethyl esters in a constant volume chamber

Ulu

Yıldız

Özkol

et al. 2022

Biomass Conv. Bioref.

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In contrast, ethanol is produced from biogenic resources like maize, sugarcane, etc. Thus, biodiesel can be fully renewable if ethanol is used instead of methanol in the biodiesel production process.Besides, ethyl esters have extra advantages over methyl esters such that they can have better performances in cold weather. However, studies considering the characteristics of ethyl esters are limited in the literature, and these papers have fully focused on performance and emission characteristics. Any published paper investigating the spray characteristics of ethyl esters is not yet available. This paper brings a certain novelty by investigating the spray characteristics of various ethyl ester type biodiesels.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of spray characteristics of ethyl esters in a constant volume chamber

Ulu

Yıldız

Özkol

et al. 2022

Biomass Conv. Bioref.

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“… 28 Biodiesels are different from conventional diesel fuels in terms of their physical properties, such as density, viscosity, and surface tension. 29 , 30 These properties influence fuel atomization and spray pattern and thus the output performance, fuel consumption, and pollutant emission levels. 31 , 32 Knowing the spray characteristics of the biodiesel to be used can provide better performance and emission characteristics with minor changes in the operating parameters of the diesel engine.…”

Section: Introductionmentioning

confidence: 99%

“…It is essential to clearly understand the fuel–air mixing process to improve the performance and reduce the emission levels of diesel engines . Biodiesels are different from conventional diesel fuels in terms of their physical properties, such as density, viscosity, and surface tension. , These properties influence fuel atomization and spray pattern and thus the output performance, fuel consumption, and pollutant emission levels. , Knowing the spray characteristics of the biodiesel to be used can provide better performance and emission characteristics with minor changes in the operating parameters of the diesel engine. Different researchers have utilized several test rigs so far to obtain the spray characteristics of fuels.…”

Section: Introductionmentioning

confidence: 99%

Spray Analysis of Biodiesels Derived from Various Biomass Resources in a Constant Volume Spray Chamber

et al. 2022

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This research aimed to analyze the spray characteristics of various biodiesels, which have rarely been investigated in terms of spray analysis in the literature compared to fossil diesel. For this purpose, four different methyl ester-type biodiesels were produced from canola, corn, cottonseed, and sunflower oils. These feedstocks were selected due to their wide availability in Turkey and being among the significant resources for biodiesel production. Measured physical properties of biodiesel samples showed that biodiesel fuels had, on average, 1.7 to 1.9 times higher viscosities, 5.3 to 6.6% larger densities, and 37 to 39.1% higher contact angle values than the reference diesel fuel. Spray characteristics of all fuels were experimentally examined in a constant volume spray chamber under chamber pressures of 0, 5, 10, and 15 bar and injection pressures of 600, 800, and 1000 bar. All tested biodiesels performed, on average, 3 to 20% longer spray penetration lengths, 5 to 30% narrower spray cone angles, and 5–18% lesser spray areas than the reference diesel fuel under chamber pressures of 5 and 10 bar. No significant differences occurred at 15 bar ambient pressure between biodiesels and diesel. In addition, analytical and empirical predictions showed that biodiesels had around 21.2–35.1% larger SMD values and approximately 7% lower air entrainment.

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“…36,37 Note that the infrared imaging has been applied more extensively to combustion diagnostics than to thermography in recent engine and engine-equivalent studies. [38][39][40] For either of combustion or thermography diagnostics, crank-angle resolved diagnostics indeed requires a high-speed imaging device. The imaging of the infrared emissions from the combustion products is relatively simple of itself, only requiring infraredcompatible optical engine or vessel, optics and the camera.…”

Section: Introductionmentioning

confidence: 99%

Infrared high-speed thermography of combustion chamber wall impinged by diesel spray flame

Aizawa

Kinoshita

Akiyama

et al. 2021

International Journal of Engine Research

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As a demonstration of a new method to examine the extremely unsteady and spatially varying wall heat transfer phenomena on diesel engine combustion chamber wall, high-speed imaging of infrared thermal radiation from the wall surface impinged by a diesel spray flame was attempted using a high-speed infrared camera. A 35 mm-diameter chromium-coated quartz window surface was impinged by a diesel spray flame with an impinging distance of 27 mm from the nozzle orifice in a constant volume combustion chamber. The infrared thermal radiation from the back surface of the 0.6 µm thick chromium layer was successfully visualized at 10 kHz frame rate and 128 × 128 pixel resolution through the quartz window. The infrared radiation exhibited coherent and streaky structure with radial stripes extending and waving from the stagnation point. The width of the radial stripes, spatial amplitude and the period of the waving movement were comparable to the ones for turbulent heat transfer on the engine cylinder wall previously measured with a heat flux sensor, suggesting that they are resulting from the turbulent structure in the wall-impinging diesel flame. The radiation intensity was calibrated to temperature and converted to heat flux via 3-D numerical analysis of transient thermal conduction in the quartz window. The peak-to-peak variation amplitudes of temperature and heat flux among the radial stripes during the diesel spray flame impingement were about 20 K and 2.3 MW/m2, corresponding to 13% of 150 K maximum temperature swing amplitude and 18 MW/m2 maximum heat flux, respectively.

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Characterization of pure and blended biodiesel spray in a compression ignition engine by means of advanced diagnostics and 1D model

Cited by 15 publications

References 46 publications

Experimental investigation of spray characteristics of ethyl esters in a constant volume chamber

Experimental investigation of spray characteristics of ethyl esters in a constant volume chamber

Spray Analysis of Biodiesels Derived from Various Biomass Resources in a Constant Volume Spray Chamber

Infrared high-speed thermography of combustion chamber wall impinged by diesel spray flame

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