2016
DOI: 10.4271/2016-01-0862
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Characterization of Internal Flow and Spray Behaviors of Hole-Type Nozzle under Tiny and Normal Injection Quantity Conditions for Diesel Engine

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Cited by 5 publications
(11 citation statements)
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“…It is known that there is a large vortex flow inside the sac of multi-hole nozzles due to the off-axis arrangement of the orifices, particularly in the low-needle-lift condition. 38 The location of the unstable vortex cores vary with the needle lift, which results in the emergence of unstable spiral fuel flow patterns from the orifice with intense vortices and pulsated perturbations.…”
Section: Resultsmentioning
confidence: 99%
“…It is known that there is a large vortex flow inside the sac of multi-hole nozzles due to the off-axis arrangement of the orifices, particularly in the low-needle-lift condition. 38 The location of the unstable vortex cores vary with the needle lift, which results in the emergence of unstable spiral fuel flow patterns from the orifice with intense vortices and pulsated perturbations.…”
Section: Resultsmentioning
confidence: 99%
“…This method measures the angle between lines fitted from a virtual origin through two sets of points along the spray edge. Points can be selected based on a fixed distance in terms of nozzle diameters [27]- [31], in terms of an arbitrary distance from the nozzle [8], [51], or in terms of a percentage of the penetration length [23], [25], [26], [34], [42], [50]- [53], [57]. These points are normally selected to cover the spray region where the angle is of interest.…”
Section: Flexible Two-point Methods (Methods #4)mentioning
confidence: 99%
“…In literature, various multiples of the injector diameter ranging from 10D to 100D as well as fixed downstream distances are used as locations to fit the lines to the spray edges [27]- [31]. Fixing the measurement distance independent of time can result in loss of information of the initial spray development until the spray reaches the selected points.…”
Section: B Line Fitting As An Explicit Function Of the Injector Geommentioning
confidence: 99%
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“…Several research institutions have studied these injectors using different measuring techniques. However, the number of holes in a practical engine is larger than the number used in ECN research injectors [e.g., 7 holes (Jin et al, 2020) or even more than 10 holes (Dong et al, 2016;Zhai et al, 2021a)]. Therefore, the sprays from a practical injector with a more representative number of nozzle holes exposed to engine-relevant operating conditions need to be investigated.…”
Section: Introductionmentioning
confidence: 99%