Numerical study on spray and combustion characteristics of diesel and soy-based biodiesel in a CI engine

Lee, Young Jae; Huh, Kang Y.

doi:10.1016/j.fuel.2013.05.106

Cited by 26 publications

(12 citation statements)

References 31 publications

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“…The conditional moment closure (CMC) turbulence model was implemented in the KIVA model (KIVA-CMC) and the two-equation model was included in the KIVA-CMC model for particulate matter (PM) estimation. Details of the simulation model used in the present study can be found in Lee and Huh [16, 17], and the three-dimensional mesh grids of the three pistons are illustrated in Fig. 3.…”

Section: Experimental Apparatusmentioning

confidence: 99%

Chamfered-bowl piston for ultra-low particulate combustion with diesel and soybean biodiesel in a single-cylinder compression-ignition engine

Kim

Lee

et al. 2015

International Journal of Engine Research

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Piston bowl geometries are critical to the combustion and emission characteristics of diesel engines. The present study investigated chamfered-bowl designs and biodiesel blending under a low-temperature combustion regime in order to achieve ultra-low particulate combustion (ULPC). The target soot level for ULPC was set at a filter smoke number value of 0.1 and engine experiments were conducted at the medium load condition. The injection visualization experiment provided the start of injection difference between the diesel and biodiesel fuels, while a three-dimensional computational simulation was conducted to examine the spray and combustion phenomena inside the engine cylinder. The experimental engine was a 1 l single-cylinder diesel engine equipped with a common-rail direct-injection system. The engine was operated at a speed of 1400 rev/min and the intake pressure was set at 200 kPa for a 50 per cent load condition. Two chamfered-bowl pistons were prepared for comparison with the conventional re-entrant bowl piston, and the experimental results showed that the chamfered-bowl pistons achieved significant soot reduction. In addition, computational analysis using a KIVA model showed that the chamfered bowls achieved wider fuel distribution and enhanced combustion. Biodiesel blending further reduced soot emission, and an increase in nitric oxides with biodiesel blends was also observed.

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Section: Experimental Apparatusmentioning

confidence: 99%

Chamfered-bowl piston for ultra-low particulate combustion with diesel and soybean biodiesel in a single-cylinder compression-ignition engine

Kim

Lee

et al. 2015

International Journal of Engine Research

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“…Çalışmada, farklı yakıtların motor performans ve emisyonlar üzerine etkisi incelenmiştir. Üç farklı oranda (%20, %60 ve %100) motorin yakıtına katılan biodizel yakıtlı çalışmalarda motorun az da olsa yanma sonu basınç değerlerinde azalmalar yaşanırken, NO emisyonları artış göstermiştir [27]. Saad vd.…”

Section: Introductionunclassified

Tek Silindirli Dizel Bir Motorun Performans ve Emisyonları Üzerinde Biodizel Karışımlı Yakıtların Etkisinin Deneysel ve Sayısal İncelenmesi

Temizer¹,

Eskici

2020

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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ÖzBu çalışmada, direkt enjeksiyonlu dizel bir motorda belirli oranlarda kullanılan kanola yağı metil ester/motorin karışımlı yakıtların motor performans, emisyon ve yanma parametreleri deneysel olarak araştırılmıştır. Ayrıca, çalışmada kullanılan yakıtların motor üzerindeki etkisi sayısal olarak da incelenmiştir. Sayısal çalışma AVL-FIRE yazılımının ESE-Diesel kısmında gerçekleştirilmiştir. Deneysel çalışmada kullanılan motor ve farklı yakıtlar sayısal olarak modellenmiştir. Motor karakteristik özelliklerinin incelendiği deneysel çalışmada, biodizel karışımlı yakıtlar motor performansını çok az da olsa düşürmüştür. Aynı zamanda biodizel karışımlı yakıtlar motorda CO ve HC gibi emisyonların azalmasına neden olmuştur. Hem deneysel hem de sayısal yanma analizlerine bakıldığında, biodizel/motorin karışımlı yakıtların silindir içi maksimum basınçların ve ısı salınımlarının artmasına neden olduğu görülmektedir. Ek olarak bu çalışmada, AVL-FIRE yazılımında yanma odası içerisindeki CO oluşumu farklı krank açılarında incelenmiştir.

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“…The simulation result shows that the atomization's of ether fuels are greater than diesel due to a high Reynolds number and low Ohnesorge number of ether fuel. Another report on a numerical study of spray and combustion characteristics of diesel was conducted by Lee and Huh [20], who have been using a Conditional Moment Closure Incompletely Stirred Reactor (CMC-ISR) model to capture the chemistry coupling between with turbulence flow. The analysis of hydro grinding effects and hole shapes on biodiesel spray using experiments and simulation was studied by Som et al [21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Nozzle Flow and Spray Characteristics from Different Nozzles Using Diesel and Biofuel Blends

et al. 2019

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In this paper, the discrete phase model (DPM) was introduced to study the fuel injector cavitations process and the macro spray characteristic of three different types of nozzle spray shape with diesel and hybrid biofuel blend for several injection pressures and backpressures. The three types of nozzle spray shapes used were circle, elliptical A type, and elliptical B type. The cavitations’ flows inside the injector nozzles were simulated with Computer Fluid Dynamics (CFD) simulations using the cavitations mixture approach. The effect of nozzle spray shape towards the spray characteristic of hybrid biofuel blends is analyzed and compared with the standard diesel. Furthermore, a verification and validation from both the experimental results and numerical results are also presented. The nozzle flow simulation results indicated that the fuel type did not affect the cavitation area vastly, but were more dependent on the nozzle spray shape. In addition, the spray width of the elliptical nozzle shape was higher as compared to the circular spray. Moreover, as the backpressure increased, the spray width downstream increased as well. The spray tip penetration for the elliptical nozzle shape was shorter than the circular nozzle shape due to circular nozzles having smaller nozzle widths and lesser spray cone angles. Thus, this resulted in smaller aerodynamic drag.

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Numerical study on spray and combustion characteristics of diesel and soy-based biodiesel in a CI engine

Cited by 26 publications

References 31 publications

Chamfered-bowl piston for ultra-low particulate combustion with diesel and soybean biodiesel in a single-cylinder compression-ignition engine

Chamfered-bowl piston for ultra-low particulate combustion with diesel and soybean biodiesel in a single-cylinder compression-ignition engine

Tek Silindirli Dizel Bir Motorun Performans ve Emisyonları Üzerinde Biodizel Karışımlı Yakıtların Etkisinin Deneysel ve Sayısal İncelenmesi

Numerical Analysis of Nozzle Flow and Spray Characteristics from Different Nozzles Using Diesel and Biofuel Blends

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