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http://yadda.icm.edu.pl:443/baztech/element/bwmeta1.element.baztech-article-BUJ5-0030-0095

Czasopismo

Journal of KONES

Tytuł artykułu

Simulation of injection and combustion processes in 4-stroke spark ignition engine with CNG direct injection

Autorzy Sendyka, B.  Mitianiec, W.  Noga, M.  Wachulec, W. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN The paper presents results of simulation conducted as afirst step of 4-stroke spark ignition experimental engine testing. The simulations were performed in a KIVA-3Vsoftware, which is intended to carry out a 3-D simulations of engine's processes. The source code of the software has been modified in order to apply it for gas injection. Original version of the software has been designedto simulate liquid fuel injection only. The simulation of direct CNG injection and combustion has been done for stratified and homogenous modes in order to check the assumed injection, ignition and charging parameters. Important assumption is that the injector had only one nozzle with flow area equal to 2 mm2. Two different cases of fuel direct injection for stratified charge have been analysed. In the first case fuel jet was almost vertical. In the other one fuel jet was nearly horizontal. Further testing has been performed using one-cylinder motorcycle 4-stroke SUZUKI DR-Z400S engine adapted to CNG fuelling. Such an engine has a suitable high compression ratio for CNG fuelling. The simulation has confirmed assumed parameters and has shown that one nozzle injector doesn't provide required fuel stream dissipation and piston crown modification is needed to direct fuel stream in spark plug area. However doing simulation requires some effort this example has shown than this is very important step before conducting experimental tests which provides crucial information and helps to avoid expensive mistakes which can be made during experimental engine preparation.
Słowa kluczowe
EN injection process   combustion process   simulation   modelling   alternative fuels   CNG  
Wydawca Institute of Aviation
Czasopismo Journal of KONES
Rocznik 2010
Tom Vol. 17, No. 1
Strony 373--378
Opis fizyczny Bibliogr. 10 poz., rys.
Twórcy
autor Sendyka, B.
autor Mitianiec, W.
autor Noga, M.
autor Wachulec, W.
  • Cracow University of Technology Institute of Automobiles and Internal Combustion Engines Jana Pawła II Av. 37, 31-864 Kraków, Poland tel.:+48 12 628 36 88, fax:+48 12 628 36 90, bsendyka@pk.edu.pl
Bibliografia
[1] Amsden, A. A., et al., KIVA: A Computer Program for Two- and Three-Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays Los Alamos National Lab., Rept. LA-10245-MS, 1985.
[2] Amsden, A. A., et al., KIVA-II - A Computer Program for Chemically Reactive Flows with Sprays. Los Alamos National Lab., LA-11560-MS, 1989.
[3] Eriksson, L., Spark Advance Modeling and Control, Studies and Technology Dissertations, No. 580. Linköping University, Linköping 1999.
[4] Heywood, J., Internal Combustion Engine Fundamentals, Mc-Graw Hill, New York 1988.
[5] Yasar, O., et al., A New Spark Ignition Method for KIVA Engine Modeling, Oak Ridge National Laboratory, Oak Ridge 1998.
[6] Hires, S. D., Tabaczyński, R. J., The Prediction of Ignition Delay and Combustion Intervals for Homogeneous Charge, Spark Ignition Engine. SAE Pap. 780232, SAE, 1978.
[7] Szargut, J., Termodynamika techniczna, PWN, Warszawa 1991.
[8] Vandebroek, L., Winter, H., Berghmans, J., Numerical Study of the Auto-ignition Process in Gas Mixtures using Chemical Kinetics, K.U.Leuven, Dept. Of Mechanical Engineering, 2000.
[9] Look, D. C., Sauer, H. J., Engineering Thermodynamics, PWS Engineering, Boston 1986.
[10] Spadaccini, L. J., Tevelde, J. A., Autoignition Characteristic of Aircraft Fuels, NASA Contractor Report Cr-159886, 1980.
Kolekcja BazTech
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