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Please use this identifier to cite or link to this item: http://hdl.handle.net/10087/5704

Title: Visualization and Measurements of Sub-Millisecond Transient Spray Dynamics Applicable to Direct Injection Gasoline Engine : Part3:Measurements of Instantaneous and Integrated Flow Rates in High Pressure Injection System Using LDA-Based Meter
Authors: ISMAILOV, Murad
ISHIMA, Tsuneaki
KOBAYASHI, Kazumitsu
Keywords: Instantaneous Flow Rate
Laser-Doppler Anemometer
Gasoline Direct Injection
High-Pressure Swirl Injector
Issue Date: 15-Feb-1999
Publisher: 社団法人日本機械学会
Citation: JSME international journal Ser B Fluids and thermal engineering. 42(1), 39-47 (1999)
Abstract: Time-dependent centerline velocity is measured using LDA-flow meter. Swirl injector at frequencies of 22 and 46 Hz generates oscillated flow under high-pressure from 4 up to 7 MPa. The encoded time-series of velocity is used to reconstruct the time-variable series of instantaneous flow rate and pressure gradient. Transient injection dynamics are analyzed to obtain basec characteristics of an injection system that will be able to be used for real time monitoring or active controlling of high-pressure gasoline injectors. The results obtained through analyzing the integrated mass rates within a cycle, indicate that a certain injection system is characterized by the flow rate constant γ which independent on injection duration and can be obtained from only accurate measurement of centerline velocity in the fuel transport pipeline. The present technique allows us to simplify the injection model and can be effectively adopted for practical employment on active and passive control with respect to gasoline direct injection engines.
URI: http://hdl.handle.net/10087/5704
ISSN: 13408054
Appears in Collections:学術雑誌論文

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