Influence of the Diesel Injector Hole Geometry on the Flow Conditions Emerging from the Nozzle

Brusiani, Federico; Falfari, Stefania; Pelloni, P.

doi:10.1016/j.egypro.2014.01.080

Cited by 35 publications

(17 citation statements)

References 17 publications

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“…An advanced cavitation model for calculating the flow in a nozzle can provide a quantitative differential indicator of cavitation wear of the washed walls. This indicator is the rate of penetration of erosion into the surface [11,[17][18][19][20][21][22]. The results of cavitation modeling are shown in Fig.…”

Section: Consideration Of the Fuel Injection Calculation Resultsmentioning

confidence: 99%

Modeling Of Hydrodynamic Processes in Diesel Injector Nozzle

Wróblewski¹

2019

mech

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Section: Consideration Of the Fuel Injection Calculation Resultsmentioning

confidence: 99%

Modeling Of Hydrodynamic Processes in Diesel Injector Nozzle

Wróblewski¹

2019

mech

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“…Należy przy tym pamiętać, że wartość kąta "" uwarunkowana jest stosunkiem gęstości paliwa do gęstości ośrodka, do którego paliwo jest wtryskiwane, a geometria strugi paliwa zależy również od kształtu [14] i położenia otworków wtryskiwacza [15], kształtu krawędzi otworków oraz własności paliwa [16], ruchu mas w ośrodku, [17] i przebiegu procesu parowania paliwa, [18]. Należy jednak zaznaczyć, że kąt wtrysku "" nie ulega znacznym zmianom wraz z przebiegiem wtrysku.…”

Section: Rys2 Schemat Geometrii Zastosowanych Wtryskiwaczy Paliwa[12]unclassified

Model of the combustion process in the marine 4-stroke diesel engine

Kowalski¹

2015

Mechanik

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MODEL OF THE COMBUSTION PROCESS IN THE MARINE 4-STROKE DIESEL ENGINE SUMMARY Manuscript presents a model of the combustion process in marine four-stroke diesel engine to determine the nitric oxides fraction (NOx) in the exhaust gas. This is iterative, 3-dimensional model, built on geometric mesh of the engine cylinder chamber. The model includes mathematical description of fuel injection, spray, evaporation and auto ignition and flame propagation in the cylinder. In order to determine the NOx fraction, the heat exchange phenomena description between structural elements of the cylinder has been done. The input data and boundary conditions are collected from the direct measurements. The model has been successfully validated based on the characteristics of the in-cylinder combustion pressure and NOx and oxygen fractions in the exhaust gas for all considered loads of the engine.

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“…The study was performed on a common rail diesel engine with three different taper injector nozzles. The results revealed that the evaluation of the cavitating flow inside the injector was performed not only from the point of view of the overall spray characteristics emerging from the injector holes but also from the cavitation erosion risk over needle, nozzle, and hole internal surfaces [9,10]. He et al [11] performed an experiment on the cavitating flow in transparent valve closed orifice type nozzle (VCO) nozzles with different length-diameter ratios (L/D) using diesel and biodiesel.…”

Section: Introductionmentioning

confidence: 99%

A correction method of hole-to-hole variation mass flow of diesel injector equipped on a common-rail DI diesel engine

Yong

et al. 2018

Eur. Phys. J. Appl. Phys.

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In the present paper, the inner flow characteristic and cavitation phenomena for different injector shapes (characterized by angle a and length-diameter ratio) are analyzed experimentally and numerically. Mathematical models including multi-phases model, volume of fluid model and the k-epsilon turbulence model are validated by experiment. The numerical results show that with the increase of injection angle a, the inception time of cavitation is earlier, the extension velocity of cavitation to nozzle exit is higher and the nozzle fuel mass is less for each cycle. With the increase of length-diameter ratios, the time consumed from the inception to stable state of cavitation is longer and the single nozzle fuel mass increases. Furthermore, a correction method is proposed based on inconsistent length-diameter ratios. It could amend the difference of single nozzle fuel mass and guarantee the uniform fuel mass in axis symmetry direction of engine cylinder.

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Influence of the Diesel Injector Hole Geometry on the Flow Conditions Emerging from the Nozzle

Cited by 35 publications

References 17 publications

Modeling Of Hydrodynamic Processes in Diesel Injector Nozzle

Modeling Of Hydrodynamic Processes in Diesel Injector Nozzle

Model of the combustion process in the marine 4-stroke diesel engine

A correction method of hole-to-hole variation mass flow of diesel injector equipped on a common-rail DI diesel engine

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