In-Cylinder Measurement and Modeling of Liquid Fuel Spray Penetration in a Heavy-Duty Diesel Engine

Ricart, Laura M.; Xin, Jun; Bower, Glenn R.; Reitz, Rolf D.

doi:10.4271/971591

Cited by 124 publications

(40 citation statements)

References 34 publications

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“…Soot formation PM model based on method of moment [17,18] NOx formation Extended Zeldovich [21] Spray breakup KH-RT model [22,23] Drop drag Dynamic model [24] Collision and coalescence NTC model [25] Spray-wall interaction Rebound/slide model [26,27] Vaporization Multi component fuel…”

Section: Phenomenon Modelmentioning

confidence: 99%

Numerical investigation on soot particles emission in compression ignition diesel engine by using particulate mimic soot model

et al. 2016

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Abstract.Research via computational method, specifically by detailedkinetic soot model offers much more advantages than the simple model as more detailed formation/oxidation process is taken into consideration, thus providing better soot mass concentration, soot size, soot number density as well as information regarding other related species. In the present computational study, investigation of in-cylinder soot concentration as well as other emissions in a single cylinder diesel engine has been conducted, using a commercial multidimensional CFD software, CONVERGE CFD. The simulation was carried out for a close-cycle combustion environment from inlet valve closing (IVC) to exhaust valve opening (EVO). In this case, detailed-kinetic Particulate Mimic (PM) soot model was implemented as to take benefit of the method of moment, instead of commonly implemented simple soot model. Analyses of the results are successfully plotted to demonstrate that the soot size and soot mass concentration are strongly dependent on the detailed soot formation and oxidation process rates. The calculated of soot mass concentration and average soot size at EVO provide the end value of 29.2 mg/m 3 and 2.04 x 10 -8 m, respectively. Besides, post-processing using EnSight shows the qualitative results of soot concentration along simulation period in the combustion chamber.

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Section: Phenomenon Modelmentioning

confidence: 99%

Numerical investigation on soot particles emission in compression ignition diesel engine by using particulate mimic soot model

et al. 2016

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“…The nozzle flow model presented by Sarre et al [17] was used to consider the effect of cavitation on spray atomization in the nozzle. The droplet breakup was modeled by the Kelvin-Helmholtz and Rayleigh-Taylor wave hybrid model [18] based on jet instability analysis. Spray/wall interactions including droplet rebound, splash and film spreading were considered in a wall film submodel [19,20].…”

Section: Model Formulationmentioning

confidence: 99%

Effect of distributions of fuel concentration and temperature on ignition processes in diesel PCCI combustion

2009

Front. Energy Power Eng. China

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The distributions of fuel concentration and temperature have significant effect on the ignition processes of diesel premixed charge compression ignition (PCCI) combustion. It was found in this study that the ignition process of PCCI combustion organized by multipulse injection was strongly influenced by conditions of fuel stratification. The start of low temperature reactions occurred in the leaner area of the combustion chamber in the test engine because the temperature here first reached the point of low temperature reactions. Ignition always occurred in the position where the mixture featured with equivalence ratios close to the mean equivalence ratio of the overall mixture, while the neighboring area of the initial ignition area accumulate heat with a finite speed until finally autoigniting. Moreover, the appearance of highest combustion temperature occurred in the same area at the combustion chamber. For more homogeneous mixture, a higher amount of mixture reached ignition simultaneously, resulting in a larger initial ignition area and a higher temperature at the ignition area. Furthermore, Vtype distribution of equivalence ratio was found to be beneficial to retarding high temperature reaction.

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“…The emission simulation adopted Extended Zeldovich NOx model [9] for NOx and Hioyasu model [10] for soot. Turbulence adopted Rapid Distortion RNG k-eps model, spray breakup adopted KH-RT model [11,12], drop/wall interaction adopted wall-film model, collision and coalescence adopted NTC collision model, drop drag adopted Dynamic Drop Drag model, with film vaporization model activated.…”

Section: Model and Boundary Conditionsmentioning

confidence: 99%

Optimization of Diesel Engine Fuel Injection System Parameters Based on Simulations

Zhang¹,

Li²,

Wang³

et al. 2017

dtetr

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Abstract. This paper simulated a six-cylinder diesel engine with 3d model, and optimized combustion and emission through modify project distance of injector and nozzle angle. Simulation result shows that appropriate project distance will enhance entraining power of vortices and reduce soot generation without increasing NOx generation; yet inappropriate nozzle angle will deteriorate combustion in either clearance volume or combustion chamber bowl. Variation in either project distance or nozzle angle has greater influence on soot generation than NOx generation, and both can be optimized to reduce soot emission without affect NOx emission significantly.

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In-Cylinder Measurement and Modeling of Liquid Fuel Spray Penetration in a Heavy-Duty Diesel Engine

Cited by 124 publications

References 34 publications

Numerical investigation on soot particles emission in compression ignition diesel engine by using particulate mimic soot model

Numerical investigation on soot particles emission in compression ignition diesel engine by using particulate mimic soot model

Effect of distributions of fuel concentration and temperature on ignition processes in diesel PCCI combustion

Optimization of Diesel Engine Fuel Injection System Parameters Based on Simulations

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