This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
LDA Analysis of High Injection Pressure Diesel Fuel Spray and Entrainment Air Flow
Annotation ability available
Sector:
Language:
English
Abstract
Droplet velocities in a diesel fuel spray before and after impinging on a wall as well as air movement around the spray are measured at room temperature and pressure. The range of fuel injection pressure is from 101 MPa to 139 MPa. The diagnostic equipment is a Laser Doppler Velocimetry with Burst Spectrum Analyzer (LDV-BSA).The results show that the droplet velocities of such a high pressure diesel fuel spray spread in a wide range (about 0-250m/s), so it is necessary to use the ensemble average for describing the velocity variation with time and space. After injection, the velocity reaches its peak value rapidly then attenuates gradually. When the spray impinges on the wall, the average velocity of the rebounded droplets is obviously reduced and the rebounded angle of most droplets is smaller than 30 degree when the incident angle is 70 degree. In the near field zone, the air entrainment in spray jet appears to be lower than that in gaseous one.
Authors
Citation
Gong, Y. and Peng, Z., "LDA Analysis of High Injection Pressure Diesel Fuel Spray and Entrainment Air Flow," SAE Technical Paper 941951, 1994, https://doi.org/10.4271/941951.Also In
References
- Parker R. F. “Future Fuel Injection System Requirements of Diesel Engines for Mobile Power,” SAE Paper 760125
- Beck N. John “High Pressure Fuel Injection -- A Rational Approach to Diesel Engine Efficiency, Emissions and Economics” SAE Paper 830860
- Yang Yanking “Application of Laser Speckle Technique for Measuring Velocity Field in Diesel Fuel Spray” Proceedings of CHIC Annual Meetings 1992 Shanghai, China
- Koo Ja-Ye Martin Jay K. “Comparisons of Measured Drop Sizes and Velocities is a Transient Fuel Spray Stability Criteria and Computed PDFS” SAE Paper 910179
- Koo Ja-Ye Martin Jay K. “Ambient Gas Density Effects on Droplet and Velocity in a Transient Diesel Fuel Spray” COMODIA, Japan
- Obokata T. Hasimoto T. “LDA Analysis of Diesel Spray and Entrainment Air Flaw” COMODIA, Japan 90 231 236
- Cossall Glanletro E. et al “LDV Characterization of Air Entrainment in Transient Diesel Sprays” SAE Paper 910278
- Yunyi Gong Linhua You “An Investigation on Diesel Spray at High Injection Pressure Using Laser Diffraction Method (Part I)” Transactions of CSICE 1989 7 4 229 306
- Linhua You “Investigation on the Characteristics of a Transient Diesel Spray at High Injection Pressure by Laser Diffraction Method” Master thesis Tianjin University 1988
- FuJimoto, H. et al. “Characteristics of a Diesel Spray Impinging on a flat Wall” Proceedings of the 4th ICLASS -- '88 22 -- 24 August Sendai Japan 1988 439 446
- Kataura, N. et al. “Characteristics of a Diesel Spray Impinging on a Flat Wall” SAE Paper 890294
- Gong Yunyi You Linhua Liang Xuanming “An Investigation on Droplet Size Distribution and Evaporation of Diesel Fuel Sprays at High Injection Pressure by Using Laser Diagnostic Technique,” SAE Paper 920090
- Yunyi Gong Xuanming Liang “The Effect of Ambient Gas Temperature and Density on the Development and Wall Impingement of High-Injection-Pressure Diesel Fuel Sprays” 1993 ASME Energy - Source Technology Conference & Exhibition Jan. 31 Feb. 4 Houston Texas, USA 1993
- Shuliang Liu et al. “Investigation on Air Movement in a Combustion Chamber of the Spark-Ignition Engine Using Two Dimensional LDV” Transactions of Tianjin University 1991
- Obokata, T. “LDV Analysis of Diesel Spray and Entrainment Air Flow” COMODIA, Japan 90 231 236