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Numerical Prediction of Stratified Charge Distribution in a Gasoline Direct-Injection Engine - Parametric Studies
Technical Paper
1999-01-0178
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Numerical analysis of the flow field and fuel spray in a gasoline direct-injection (GDI) engine is performed by a modified version of the KIVA code. A simple valve treatment technique is employed to handle multiple moving valves without difficulties in generation of a body-fitted grid. The swirl motion of a hollow-cone spray is simulated by injecting droplets with initial angular momentum around the nozzle periphery. The model for spray-wall impingement is based on single droplet experiments with the droplet behaviors after impingement determined by experimental correlations. Different behaviors of an impinging droplet depend on the wall temperature and the critical temperature of fuel with the fuel film taken into account.
The test engine is a 4-stroke 4-valve gasoline engine with a pent-roof head and vertical ports to form a reverse tumble flow during the intake stroke. A hollow-cone spray by a high-pressure swirl injector is employed to enhance mixture preparation and mixing. A piston bowl is implemented to trap the mixture around the sparkplug and to enhance evaporation by retarding impingement of the spray. Parametric study is performed for two different chamber geometries with respect to the speed/load, the fuel injection timing, the spray cone angle and the incidence angle of the fuel injector. Results show that poor mixture distribution can be improved by adjusting some of these parameters.
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Joh, M., Huh, K., Noh, S., and Choi, K., "Numerical Prediction of Stratified ChargeDistribution in a Gasoline Direct-Injection Engine- Parametric Studies," SAE Technical Paper 1999-01-0178, 1999, https://doi.org/10.4271/1999-01-0178.Also In
References
- Kono Seiko Development of the stratified charge and stable combustion method in di gasolie engines SAE paper 950688 1995
- Kume T. Iwamoto Y. Iida K. Murakami M. Akishino K. Ando H. Combustion control technologies for direct injection SI engine SAE paper 1996
- Jackson N. S. Stokes J. Whitaker P. A. Lake T. H. Stratified and homogeneous charge operation for the direct injection gasoline engine - high power with low fuel consumption and emissions SAE paper 970543 1997
- Ohsuga M. Shiraishi T. Nogi T. Nakayama Y. Sukegawa Y. Mixture preparation for direct-injection SI engines SAE 970542 1997
- Iwamoto Y. Noma K. Nakayama O. Yamauchi T. Ando H. Development of gasoline direct injection engine SAE paper 970541 1997
- Zhao Fu-Quan Lai Ming-Chia Harrington David L. A review of mixture preparation and combustion control strategies for spark-ignited direct-injection gasoline engines SAE 970627 1997
- Harada Jun Tomita Tsutomu Mizuno Hiroyuki Mashiki Zenichiro Yasushi Ito Development of direct injection gasoline engine SAE 970540 1997
- Karl Karl Kemmler R. Bargende M. Abthoff J. Analysis of a direct injected gasoline engine SAE 970624 1997
- Fraidi G. K. Piok W. F. Wirth M. Gasoline direct injection: actual trends and future stratigies for injection and combustion systems SAE 960465 1996
- Kuwahara K. Watanabe T. Takemura J. Omori S. Kume T. Ando H. Optimization of in-cylinder flow and mixing for a center-spark four-valve engine employing the concept of barrel-stratification SAE 940986 1502 1513 1994
- Iwamoto Y. Danno Y. Hirako O. Fukui T. Murakami N. The 1.5-liter vertical vortex engine SAE paper 920670 1992
- Pontoppidan M. Gaviani G. Bella G. Rocco V. Direct fuel injection - a study of injector requirements for different mixture preparation concepts SAE 970628 1997
- Han Zhiyu Reitz Rolf D. Yang Jialin Anderson Richard W. Effect of injection timing on air-fule mixing in a direct-injection spark-ignition engine SAE 970625 1997
- Yamauchi T. Wakisaka T. Computation of the hollow-cone sprays of a high-pressure swirl injector for a gasoline direct-injection SI engine JSAE 9632046 57 60 1996
- Miok Miok Huh Kang. Y. Noh Seok Hong Choi Kyu Hoon Numerical prediction of charge distribution in a lean burn direct-injection spark-ignition engine SAE paper 970626 1997
- Miok Joh Numerical prediction of charge distribution in ic engines with spray-wall impingement (in Korean) Department ofMechanical Engineering, Pohang University of Science and Technology 1997
- Miok Joh Huh Kang Y. A numerical model for atomization of an impinging spray on the wall KSASS Journal (in Korean) 2 36 45 1997
- Amsden A. A. Ramshaw J. D. O'Rourke P. J. Dukowicz J. K. KIVA: A computer program for two- and three-dimensional fluid flows with chemical reactions and fuel sprays Los Alamos Natioal Laboratory 1985
- Amsden A. A. O'Rourke P. J. Butler T. D. KIVAII: A computer program for chemically reactive flows with sprays Los Alamos Natioal Laboratory 1989
- Hirt C. W. Amsden A. A. Cook J. L. An arbitrary lagrangian-eulerian computingmethod for all flow speeds J. Cmput. Phys. 14 1974
- Pracht W. E. Calculating three-dimensional fluid flows at all speeds with an eulerian-lagrangian computing mesh J. Comput. Phys. 17 1975
- ICEM CFD Structured Grd Generaton Tranng ICEM CFD Engineering
- ICEM CFD/CAE User's Manual. ICEM systems Oct. 1993
- Kim Woo Tae A study on the treatment of multiple moving valves in three-dimensional engine flow simulations (in Korean) Department of Mechanical Engineering, Pohang University of Science and Technology 1996
- Naber J. D. Reitz R. D. Modeling engine spray/wall impngement SAE 880107 6.118 6.140 1988
- Naber J. Enright B. Farrell P. Fuel impingement in a direct injection diesel enigne SAE 881316 3.430 3.443 1988
- Park K. Watkins A. P. Assessment and application of a new spray wall impaction model IMechE C499/004/96 1996
- Park Kweonha Development of a non-orthogonal grid computer code for the optimization of direct-injection diesel engine combustion chamber shapes University of Manchester 1994
- Bai Chengxin Gosman A. D. Development of methodology for spray impingement simulation SAE 950283 1995
- Bai Chengxin Gosman A. D. Mathematical modeling of wall films formed by impinging sprays SAE 960626 1996
- Eckhause Joel E. Reitz Rolf D. Modeling heat transfer to impinging fuel sprays in direct-injection engines atomization and sprays 5 213 242 1995
- Senda J. Kanda T. Al-Roub M. Farrell P. V. Fukami T. Fujimoto H. Modeling spray impingement considering fuel film formation on the wall SAE 970047 1997
- Liu Zhengbai Obokata Tomio Reitz Rolf D. Modeling drop drag effects on fuel spray impingement in direct injection diesel engine SAE 970879 1997
- Mundo C. Sommerfeld M. Tropea C. Experimental studies of the deposition and splashing of small liquid droplets impinging on a -flat surface ICLASS-95 134 141 1995
- Mundo Chr. Sommerfeld M. Tropea C. Dropletwall collisions: experimental studies of deformation and breakup process Int. J. Multiphase Flow 21 2 151 173 1995
- Wachters L. H. Westerling N. A. J. The heat transfer from a hot wall to impinging water drops in the spheroidal state Chem. Engng. Sci. 21 1047 1056 1966
- Tomoda Terutoshi Sasaki Shizuo Sawada Sawada Development of direct injection gasoline engine - study of stratified mixture formation SAE 970539 1997
- Kia Technical Center Private Communication 1998