2015
DOI: 10.1016/j.enconman.2014.10.047
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Numerical investigation on effects of nozzle’s geometric parameters on the flow and the cavitation characteristics within injector’s nozzle for a high-pressure common-rail DI diesel engine

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Cited by 109 publications
(47 citation statements)
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“…Therefore, a diesel engine that is equipped with a highpressure common rail system has the potential to achieve the optimized design goals of high-efficiency combustion and ultralow emission [1][2][3][4][5]. The common rail injector is one of the high-pressure common rail system's critical components, with a direct influence on the cycle fuel injection quantity fluctuation, gas-liquid two-phase flow characteristics of highpressure fuel in the nozzle, fuel atomization characteristics in the cylinder, and air-fuel mixture quality [6][7][8][9]. The common rail injector is a complex, nonlinear, and multidimensional system that couples electromagnetic, mechanical, and hydraulic phenomena.…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, a diesel engine that is equipped with a highpressure common rail system has the potential to achieve the optimized design goals of high-efficiency combustion and ultralow emission [1][2][3][4][5]. The common rail injector is one of the high-pressure common rail system's critical components, with a direct influence on the cycle fuel injection quantity fluctuation, gas-liquid two-phase flow characteristics of highpressure fuel in the nozzle, fuel atomization characteristics in the cylinder, and air-fuel mixture quality [6][7][8][9]. The common rail injector is a complex, nonlinear, and multidimensional system that couples electromagnetic, mechanical, and hydraulic phenomena.…”
Section: Introductionmentioning
confidence: 99%
“…The variation of hole passage diameter is complex for these nozzles. All nozzles show an initially diverging passage diameter which supports cavitation [32,44,45]. This is followed by a later section which is converging and this is greatest for the Ày hole of the 0°and 10°nozzles.…”
Section: Nozzle Characterisationmentioning
confidence: 94%
“…Factors which could influence spray dominance are hole geometry [23,24], injector needle movement [25], needle eccentricity [26], and cavitation [22,27]. Cavitation either in the nozzle sac (string cavitation), or on entry to nozzle hole (geometric induced cavitation) could be expected to alter mass discharge and its distribution across the nozzle exit thus altering spray characteristics [22,24,[28][29][30][31][32]. Knowledge of the vapour distribution across the nozzle exit could yield detail on the type of cavitation present.…”
Section: Introductionmentioning
confidence: 98%
“…Therefore, suitable fuel injectors are needed to provide sufficient control on the spray process and to meet the basic requirements for the atomisation and mixing process. High pressure injectors are one of the most commonly used injectors in commercial applications today [12]. They are designed to improve the atomisation process and to increase the turbulence levels within the combustion chamber for better mixing between the air and fuel.…”
Section: Introductionmentioning
confidence: 99%