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Kawamura K.,Toota Central R and D Labs. Inc. | Masuda R.,Toota Central R and D Labs. Inc. | Ueda R.,Toota Central R and D Labs. Inc. | Idota Y.,Toota Central R and D Labs. Inc. | And 3 more authors.
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

A poppet type nozzle which promotes atomization b utilizing cavitation phenomena was designed to clarify the atomization mechanism. The configuration of the nozzle i hich has two orifices and an intennediate cavity between the orifices was decided by nunicrical analysis on the cavitating flow in the nozzle. In this report. atomization mechanism and spray characteristics of the nozzle are described. The following results are obtained: (1) The net-like fuel liquid sheet is observed closed to orifice. The net-like stnmcture with cavitation bubbles is collapsed to droplets via ligaments. (2) The present nozzle has the features of generating smaller drop size and lower spray tip penetration than the conventional poppet type nozzle. © 2012 The Japan Society of Mechanical Engineers. Source

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