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Characteristics of the Spray from the Swirl Nozzle for Direct Injection Gasoline Engine
Technical Paper
2001-28-0012
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2001
Language:
English
Abstract
A high-pressure swirl type fuel spray has been experimentally analyzed by using a phase Doppler anemometer (PDA). The experiments were mainly made under the injection pressure of 5MPa and injection frequency of about 46Hz. The PDA data was obtained in a two-dimensional plane and arranged by the ensemble-averaged method along the injection phase angle. The arranged data of mean velocity and Sauter mean diameter were visualized for demonstration.
Time-dependent centerline velocity at the injection pipe was also measured by means of laser Doppler anemometer (LDA). Swirl injector operating at injection frequencies of 22 and 46 Hz generates oscillating flow in the pipe under injection pressure from 4 to 7 MPa. The time-series of centerline velocity was used to reconstruct the time-series of instantaneous pressure gradient and flow rate in the pipe. Transient injection dynamics were analyzed to obtain the basic characteristics of injection system that will be able to use for real time monitoring or active controlling of high-pressure fuel injection.
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Authors
- Tsuneaki Ishima - Department of Mechanical System Engineering, Gunma University, Japan
- Ryoichi Sukena - Department of Mechanical System Engineering, Gunma University, Japan
- Chuanli Liu - Department of Mechanical System Engineering, Gunma University, Japan
- Tomio Obokata - Department of Mechanical System Engineering, Gunma University, Japan
- Katsuyoshi Kawachi - Unisia JECS Co., Japan
- Kazumitsu Kobayashi - Unisia JECS Co., Japan
Topic
Citation
Ishima, T., Sukena, R., Liu, C., Obokata, T. et al., "Characteristics of the Spray from the Swirl Nozzle for Direct Injection Gasoline Engine," SAE Technical Paper 2001-28-0012, 2001, https://doi.org/10.4271/2001-28-0012.Also In
References
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