This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influence of the Nozzle Geometry of a Diesel Single-Hole Injector on Liquid and Vapor Phase Distributions at Engine-Like Conditions
Technical Paper
2013-24-0038
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The paper describes an experimental activity on the spatial and temporal liquid- and vapor-phase distributions of diesel fuel at engine-like conditions. The influence of the k-factor (0 and 1.5) of a single-hole axial-disposed injector (0.100 mm diameter and 10 L/d ratio) has been studied by spraying fuel in an optically-accessible constant-volume combustion vessel.
A high-speed imaging system, capable of acquiring Mie-scattering and Schlieren images in a near simultaneous fashion mode along the same line of sight, has been developed at the Michigan Technological University using a high-speed camera and a pulsed-wave LED system. The time resolved pair of schlieren and Mie-scattering images identifies the instantaneous position of both the vapor and liquid phases of the fuel spray, respectively. The studies have been performed at three injection pressures (70, 120 and 180 MPa), 23.9 kg/m3 ambient gas density and 900 K gas temperature in the vessel. A pre-combustion of reactants filling the vessel generated the required high-temperature and high-pressure conditions typical of diesel engine at the injection time. This pre-combustion mixture consists of C2H2, H2, O2 and N2 gases in order to obtain inert conditions (0% O2). The results obtained in the non-vaporizing conditions have been compared with those obtained on a different facility at Istituto Motori. In this paper the influence of the k-factor on the measurements of liquid and vapor penetration will be presented with the comparison of liquid penetration obtained by both the acquisition techniques and the two facilities. Then the liquid and vapor mass fraction has been estimated for several experimental conditions. Finally, fuel injection rates determinations using a meter working on the Bosch tube principle have been carried out to measure the injected mass.
Authors
Topic
Citation
Montanaro, A., Allocca, L., Johnson, J., Lee, S. et al., "Influence of the Nozzle Geometry of a Diesel Single-Hole Injector on Liquid and Vapor Phase Distributions at Engine-Like Conditions," SAE Technical Paper 2013-24-0038, 2013, https://doi.org/10.4271/2013-24-0038.Also In
References
- Engine Combustion Network data archive http://sandia.gov/ECN/
- Pickett , L. , Genzale , C. , Bruneaux , G. , Malbec , L. et al. Comparison of Diesel Spray Combustion in Different High-Temperature, High-Pressure Facilities SAE Int. J. Engines 3 2 156 181 2010 10.4271/2010-01-2106
- Abraham , J. , Pickett L.M. Computed and Measured Fuel Vapor Distribution in a Diesel Spray Atomization and Sprays 20 241 250 2010
- Lucchini , T. , D'Errico , G. , Ettorre , D. , and Ferrari , G. Numerical Investigation of Non-Reacting and Reacting Diesel Sprays in Constant-Volume Vessels SAE Int. J. Fuels Lubr. 2 1 966 975 2009 10.4271/2009-01-1971
- Pastor , J. , Payri , R. , Garcia-Oliver , J. , and Nerva , J. Schlieren Measurements of the ECN-Spray A Penetration under Inert and Reacting Conditions SAE Technical Paper 2012-01-0456 2012 10.4271/2012-01-0456
- Payri , F. , Pastor J.V. , Pastor J.M. , Julia J.E. Diesel Spray Analysis by Means of Planar Laser-Induced Exciplex Int.J. Eng. Res. 7 77 89 2006
- Parrish , S.E. , Zink R.J. Development and Application of a High-Speed Planar Laser-induced Fluorescence Imaging System to Evaluate Liquid and Vapor Phases of Sprays from a Multi-Hole Diesel Fuel Injector Meas. Sci. Technol. 24 2013 025402 7 10.1088/0957-0233/24/2/025402
- Melton , L.A. Spectrally Separated Fluorescence for Diesel Fuel Droplets and Vapor Appl. Opt. 22 1983 2224 6
- Parrish , S.E. , Zink R.J. Development and Application of an Imaging System to Evaluate Liquid and Vapor Envelopes of Spray from a Multi-Hole Gasoline Fuel Injector Operating under Engine-Like Conditions ILASS-Americas, 23rd Annual Conf. Ventura, CA May 2011
- Kong , J. , Bae , C. Effect of Nozzle Hole Geometry on Non-Evaporating Diesel Spray Characteristics at High- Pressure Injection Atomization and Sprays 22 1 1 21 2012
- Payri , F. , Bermùdez , V. , Payri , R. , Salvador , F.J. The Influence of Cavitation on Internal Flow and Spray Characteristics in Diesel Injection Nozzle Fuel 83 4-5 419 431 2004
- Payri , R. , Salvador , F. , Gimeno , J. , and de la Morena , J. Macroscopic Behavior of Diesel Sprays in the Near- Nozzle Field SAE Int. J. Engines 1 1 528 536 2009 10.4271/2008-01-0929
- Hiroyasu , H. Spray Breakup Mechanism from the Hole- Type nozzle and its Applications Atomization and Sprays 10 3-5 511 527 2000
- Naber , J. and Siebers , D. Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays SAE Technical Paper 960034 1996 10.4271/960034
- Bosch , W. The Fuel Rate Indicator: A New Measuring Instrument For Display of the Characteristics of Individual Injection SAE Technical Paper 660749 1966 10.4271/660749
- Wallace , I. Injection Rate Gauge: Pass Off Information and User Instructions Fuel & Engine Management Systems Graz December 2002
- Allocca , L. , Alfuso , S. , Corcione , F. E. Assessment of Dynamic Performances of Diesel Solenoid Injectors for a Multiple Injection Common Rail System SAE Paper 2003-01-21 2003
- Allocca L. , Mancaruso E. , Montanaro A. , Vaglieco B. M. Use of Mineral Diesel, 1st and 2nd Generation Biodiesels in Modern Common Rail Injection System under Non Evaporative and Evaporative Conditions Atomization and Sprays 2012 22 2 10.1615/AtomizSpr.2012004362 1044-5110
- di Stasio S. , Alfuso , S. , Allocca , L. , Corcione F.E. Experimental Study on the Atomization Mechanism for Fuel Sprays Evolving in Atmospheres of Different Nature and Density ImechE Seminar Publication 1999-17 241 255