This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Study of the Impact of Variations in the Diesel-Nozzle Geometry Parameters on the Layout of Multiple Injection Strategy
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 04, 2002 by SAE International in United States
Annotation ability available
In the present paper the impact of three different geometrical layouts of the discharge nozzle of a high-pressure diesel injector designed is examined for a common rail second generation direct injection system. The paper presents a comparative study of the spray behavior of the three different nozzle layouts connected to a 150 MPa rail-pressure when mounted on a 1.6 liter European passenger car engine. To evaluate experimentally the differences in the fundamental physical spray parameters several specially developed optical visualization techniques are used, which enable phase-Doppler, Laser-sheet and high-speed recordings of dense high pressure sprays.
The change in basic spray parameters (time-resolved droplet distribution and spray momentum) caused by the nozzle geometry variation is examined. The impact on the in-cylinder penetration and mixing characteristics is studied with a 3D-numerical simulation code NCF-3D.
The paper continues with a discussion of the interaction between nozzle layout and the use of a multi-strike injection strategy adopted in order to decrease the engine-out NOx and particulate emissions.
The paper concludes with a discussion of the capability of each of the nozzle layouts to enhance the optimization of the multi-strike injection approach.
CitationPontoppidan, M., Ausiello, F., Bella, G., and Demaio, A., "Study of the Impact of Variations in the Diesel-Nozzle Geometry Parameters on the Layout of Multiple Injection Strategy," SAE Technical Paper 2002-01-0217, 2002, https://doi.org/10.4271/2002-01-0217.
- Abraham J. Bracco F. Reitz R. “Comparison of Computed and Measured Premixed Charged Engine Combustion.” Combustion and Flame 60 1985
- Arcoumanis C. Afzal H. Gavaises M Kampanis N. “Internal flow in Diesel injector nozzles: modelling and experiments.” IMech Conference Proceedings London december 1-2 1999
- Arcoumanis C. Flora H. Gavaises M. Kampanis N. Horrocks R. “Investigations of Cavitation in a vertical Multi-Hole Injector.” SAE Paper 1999-01-0524
- Bella G. Rotondi R. Grimaldi C. Postrioti L. “Atomization of High-Pressure Diesel Spray: Experimental Validation of New Breakup Model.” SAE Paper 2001-01-1070
- Bianchi G. Pelloni P. Corcione F. Luppini F. “Numerical Analysis of Passenger Car HSDI Diesel Engines with the 2 nd Generation of Common Rail Injection Systems: The Effect of Multiple Injections on Emissions.” SAE Paper 2001-01-1068
- Bergwerk W. “Flow pattern in diesel nozzle spray holes.” Proceedings of Inst. Mech. Engineers 173 25 635 674 1959
- Immarisio R. Rinolfi, R. “The third generation Direct Injection Diesel engine for Passenger Cars.” ATA Journal 52 1999
- Kong S. Han Z. Reitz R. “The Development and Application of a Diesel Engine and Combustion Model for Multidimensional Engine Simulation.” SAE Paper 950278
- Krämer S. Nieter H. G. Frey J. Karl G. “Der DE-Ottomotor: Quo Vadis - wohin führt der Weg?” 20 Internationales Wiener Motoren Symposium VDI 1999 1
- Lippert A. Reitz R. Rutland C. “Influence of Spray / Wal Interaction and Fuel Films on Cold Starting in D. I. Diesel Engine.” SAE Paper 982584
- Marcer R. Le Cottier P. Chaves H. Argueyrolles B. Habchi C. Barbeau B. “A Validated Numerical Simulation of Diesel Injector Flow Using a VOF Method.” SAE Paper 2000-01-2932
- Naber J. Siebers D. “Effects of Gas Density and Vaporization on Penetration and Dispersion on Diesel Sprays.” SAE Paper 960034
- Patterson M. Reitz R. “Modelling the Effects of Fuel Spray Characteristics on Diesel Engine Combustion and Emission.” SAE Paper 980131
- Pontoppidan M. Gaviani G. Bella G. Rocco V. “Improvements of GDI-Injector Optimization Tools for Enhanced SI-Engine Combustion Chamber Layout.” SAE Paper 980494
- Pontoppidan M. Gaviani G. Bella G. Rocco V. “Enhanced use of 3-D CFD and Combustion Simulation to Optimize the Development of ECU-Control Algorithms for GDI Spark Ignited Engines.” ICE 99 - Proceedings
- Pontoppidan M. Gaviani G. Bella G. Rocco V. “Enhanced Mixture Preparation Approach for Lean Stratified SI-Combustion by a Combined Use of GDI and Electronically Controlled Valve-Timing.” SAE Paper 2000-01-0532
- Pontoppidan M. Gaviani G. Bella G. Demaio A. Schilardi M “Developments in the Use of Multi-Purpose Numerical Simulation Tools to Optimize Combustion Control Parameters for the 2 nd Generation of Lean Burn, Stratifed GDI Engines.” SAE Paper 2001-01-0967
- Pontoppidan M Arnone L. Marcacci M. Demaio A. “Comparative Study of the Capability of Mixture- and Liquid Based GDI Configurations to optimize a Lean Stratified SI-Combustion ina Two-Stroke, small displacement Engine.” Setc 2001-01-1783/4206