This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Flow Features in Reduced Dwell Time Diesel Injector
Technical Paper
2008-01-0927
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The research and development activities on diesel injection systems have focused some key-factors that improve the solenoid actuated injector performance, especially in the frame of the multi-event injection strategies. This paper deals with a 3-D numerical investigation that highlights the nozzle flow features of different injector layouts. A comparison between a last generation standard injector and an optimized unit characterized by an improved dynamics, different number of holes and reduced maximum lift is performed. By means of transient numerical simulations, the behavior of the fuel flows, the tendency to cavitation development and the response to the deviation from the standard operating conditions (highlighted by introducing a radial perturbation on the lift motion) are investigated.
Recommended Content
Authors
Citation
Chiatti, G., Chiavola, O., and Palmieri, F., "Flow Features in Reduced Dwell Time Diesel Injector," SAE Technical Paper 2008-01-0927, 2008, https://doi.org/10.4271/2008-01-0927.Also In
References
- Baratta, M. Catania, A. Ferrari, A. “Hydraulic Circuit Design Keys to Remove the Dependence of the Injected Fuel Amount on Dwell Time in Multi-Jet C.R. Systems” ICES2006 ASME Paper No. 1426
- Catania, A. Ferrari, A. Manno, M. Spessa, E. “Experimental Investigation of Dynamics Effects on Multiple-Injection Common Rail System Performance” ICES2005 ASME Paper No. 1108
- Catania, A. Ferrari, A. Manno, M. “Development and Application of a Complete Common-Rail Injection System Mathematical Model for Hydrodynamic Analysis and Diagnostics” ICES2005 ASME Paper No. 1018
- Catania, A. Ferrari, A. Mittica, A. Spessa, E,. “Common Rail without Accumulator: Development, Theoretical-Experimental Analysis and Performance Enhancement at a DI-HCCI Level of a new Generation FIS” SAE Paper No. 2007-01-1258
- Catania, A. Ferrari, A. Spessa, E. “Numerical-Experimental Study and Solutions to Reduce the Dwell Time Threshold for Fusion-Free Consecutive Injections in a Multijet Solenoid-Type C.R. System” ICES2006 ASME Paper No. 1369
- Imagine AMESim v4.2 Tutorial and User Guide AMESim Technical Bullettins
- FIRE v8.5 CFDWM Guide AVL List GmBH
- Fezzaa, K. Lee, W.K. Cheong, S. Powell, C.F. Wang, J. Li, M. Lai, M.C. “High Pressure Diesel Injection Studied by Time-Resolved X-Ray Phase Contrast Imaging” ICES2006 ASME Paper No. 1409
- Chiavola, O. Palmieri, F. “Modeling Needle Motion Influence on Nozzle Flow in High Pressure Injection System” SAE Paper No. 2007-01-0250
- Zielke W. “Frequency-dependent friction in transient pipe flow” Trans. ASME J. Basic Engng 90 109 115 1968
- Samada, Richards C.W. et al. “A finite element model of hydraulic pipelines using an optimized interlacing grid system” ImechE 1993
- Giannadakis, E. “Modelling of Cavitation in Automotive Fuel Injector Nozzles” Imperial College London, UK 2006
- Giannadakis, E. Papoulias, D. Gavaises, M. Arcoumanis, C. Soteriou, C. Tang, W. “Evaluation of Predictive Capability of Diesel Nozzle Cavitation Models” SAE Paper No. 2007-01-0245
- FIRE v8.4 Multiphase Manual AVL List GmBH
- Tatschl, R. v. Künsberg-Sarre, C. Alajbegovic, A. Winklhofer, E. “Diesel Spray Modeling Including Multidimensional Cavitation Nozzle Flow Effects” Proc. of ILASS Europe Conference Sept. 11-13 Darmstadt, Germany 2000
- Hinze, J.O. “Turbulence” 2nd McGraw-Hill New York 1975
- Franklin, R.E. McMillan, J. “Noise Generation in Cavitating Flows” J. Fluids Eng. 106 336 341 1984