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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Druckformat: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i1-3.290
pages 294-306

Control of Transient Injection and Fast Spray Dynamics

M. Ismailov
Department of Mechanical System Engineering, Gunma University, 1-5-1, Tenjin, Kiryu, 376 Japan
Tsuneaki Ishima
Department of Mechanical System Engineering, Gunma University, 1-5-1, Tenjin, Kiryu, 376 Japan
T. Obokata
Department of Mechanical System Engineering, Gunma University, 1-5-1, Tenjin, Kiryu, 376 Japan
M. Tsukagoshi
Unisia Jecs Co., 1671-1, Kasukawa, Isesaki, 372 Japan
K. Kobayashi
Unisia Jecs Co., 1671-1, Kasukawa, Isesaki, 372 Japan

ABSTRAKT

The present paper describes available operational sources to control the instantaneous fuel flow rate driven by injection system at the high frequencies, 25 and 50 Hz, with main focus to the fast transient phases. The influence of outflow nozzle diameter ranged from 100 to 500 μm on the pipe flow dynamics has been investigated. It was experimentally observed that instantaneous flow rate can be actively controlled by varying operation injection frequency and injection time within a cycling period. Aiming at the practical fuel injection control by using a pressure measurement the analysis of those data is introduced. Results of the PDA measurements in high pressure rig to validate a fuel spray formation in advanced direct injection system is also presented.