This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Some Important Boundary Conditions for Spray Measurements in a Constant Volume Combustion Chamber
Technical Paper
2013-01-1610
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Fuel atomization and combustion at engine-like conditions are complicated and sensitive processes which make it hard to perform quantitative experiments with high precision and reproducibility. A better understanding of the processes can be obtained by controlling the boundary conditions. Variable parameters with an important influence on the sprays include fuel temperature, chamber temperature, injection pressure, gas velocity. Controlling all these parameters in an experimental setup is not evident since a lot of them fluctuate with time or interact with each other. Constant volume combustion chambers, using the pre-combustion method, have already shown to be a useful experimental tool for this kind of research purposes. The obtained quantitative results can in a next step be used to evaluate either multi-dimensional or simplified lower dimensional models.
In this work the importance of temperature dependency of the fuel properties and spray characteristics is shown, especially when comparing different and viscous fuels. As a consequence, temperature of both the fuel and ambient need to be controlled. The quantitative results are unique for each experimental setup, however, the methods, guidelines and conclusions are useful for any research activity. A method with good accuracy for determining the fuel temperature in the injector is proposed. The temperature distribution inside the constant volume combustion chamber during and after pre-combustion is experimentally evaluated with fast responding thermocouples. The flow and mixing inside the vessel is mainly determined by the fan to obtain a fast and complete combustion as well as a homogeneous resulting temperature and velocity field at time of injection. Finally, the influence of the pre-combustion upon the in-nozzle temperature is evaluated. The resulting effect on the fuel temperature is estimated and found to be negligible. The same conclusion holds for the fuel temperature increase during injection. As a result, the initial conditions at start of injection can be estimated as well as the uncertainties and reproducibility.
Recommended Content
Authors
Citation
Galle, J., Van De Maele, C., Defruyt, S., Verhelst, S. et al., "Evaluation of Some Important Boundary Conditions for Spray Measurements in a Constant Volume Combustion Chamber," SAE Technical Paper 2013-01-1610, 2013, https://doi.org/10.4271/2013-01-1610.Also In
References
- Perry R. , Green D.W. Perry's chemical engineers' handbook 1997 0071422943
- Lorentz S. , Goldlucke J. , Straub D. , Bruggemann D. Spray velocity field analysis with optical flow method - an alternative to particle image velocimetry ICLASS 2012 conference Heidelberg (Germany) 1180b
- Meijer M. , Christians R.J. , Van Griensven J.G.H. , Somers L.M.T. , de Goey L.P.H. Engine Combustion Network: implementation and analysis of combustion vessel spray A conditions ILASS-Americas 23rd Annual Conference on Liquid Atomization and Spray Systems Ventura, CA May 2011
- Galle J. , Defruyt S. , Van de Maele C. , Rodriguez R.P. , Denon Q. , Verliefde A. , Verhelst S. Influences of fuel properties and injection parameters on bio-fuel injections in an optical combustion chamber Biomass&Bioenergy, IN REVIEW
- Galle , J. , Demuynck , J. , Vancoillie , J. , and Verhelst , S. Spray Parameter Comparison between Diesel and Vegetable Oils for Non-Evaporating Conditions SAE Technical Paper 2012-01-0461 2012 10.4271/2012-01-0461
- Wloka J.A. , Hubert A. , Wachtmeister G. Injection spray comparison of diesel fuel and cold pressed rapeseed oil fuel ILASS 2010
- Reitz , R. and Bracco , F. On the Dependence of Spray Angle and Other Spray Parameters on Nozzle Design and Operating Conditions SAE Technical Paper 790494 1979 10.4271/790494
- Baert , R. , Frijters , P. , Somers , B. , Luijten , C. et al. Design and Operation of a High Pressure, High Temperature Cell for HD Diesel Spray Diagnostics: Guidelines and Results SAE Technical Paper 2009-01-0649 2009 10.4271/2009-01-0649
- 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
- Hattori , H. , Narumiya , K. , Tsue , M. , and Kadota , T. Analysis of Initial Breakup Mechanism of Diesel Spray Injected into High-Pressure Ambience SAE Technical Paper 2004-01-0528 2004 10.4271/2004-01-0528
- Klein-Douwel R.J.H. , Frijters P.J.M. , Somers L.M.T. , de Boer W.A. , Baert R.S.G. Macroscopic diesel fuel spray shadowgraphy using high speed digital imaging in a high pressure cell Fuel 86 2007 1994 2007
- Takahashi , H. , Tomaru , K. , Shiga , S. , Karasawa , T. et al. Characteristics of Diesel Spray with Unsteady and Higher Injection Pressure Using a Rapid Compression Machine SAE Technical Paper 910226 1991 10.4271/910226
- Mancaruso E. , Vaglieco B.M. Optical investigation of the combustion behaviour inside the engine operating in HCCI mode and using alternative diesel fuel Experimental Thermal and Fluid Science 34 2010 346 351
- Kozuka K. , Ozasa T. , Fujikawa T. , and Saito A. Schlieren observation of spark ignited premixed charge combustion phenomena using a transparent collimating cylinder engine 2003
- Settles , G.S. Schlieren & Shadowgraph Techniques 2001 Springer
- Stiesch G. Modeling engine spray and combustion processes Springer 2003 3-540-00682-6
- Crua C. Combustion processes in a diesel engine PhD-thesis 2002 University of Brighton UK
- Meijer M. , Malbec L-M. , Bruneaux G. , Somers L.M.T. Engine Combustion Network: spray A basic measurements and advanced diagnostics Heidelberg ICLASS Conference 2012
- 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
- Lorenz S. , Goldlucke J. , Straub D. , Bruggemann D. Spray velocity fiel analysis with optical flow method - an alternative to particle image velocimetry ICLASS 2012 Heidelberg 1180b