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2016, vol. 44, br. 1, str. 22-28
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Aproksimativna analiza lupanja motora sa unutrašnjim sagorevanjem primenom Wavelet teorije i kontrola lupanja recirkulacijom hlađenih izduvnih gasova
Approximate analysis of SI engine knocking using Wavelet and its control with cooled exhaust gas recirculation
aAlbertian Institute of Science and Technology (AISAT), Department of Mechanical Engineering, India bCollege of Engineering, Thalassery Department of Electronics and Communication Engineering, India cCochin University of Science and - Technology (CUSAT), Department of Mechanical Engineering, India
e-adresa: antonioswas@gmail.com
Sažetak
Lupanje motora predstavlja prepreku za poboljšanje performansi motora, pa se stepen kompresije ograničava ispod granice najvišeg stepena korisnosti. Iako se lupanje projektovanjem održava znatno ispod najvišeg stepena korisnosti, ono se javlja u uslovima dugotrajnog rada motora usled opadanja toplotnog kapaciteta rashladnog sredstva. Predmet naše studije je predviđanje pojave lupanja, na osnovu zvučnih signala koje stvara motor, primenom Wavelet teorije. Izvršeno je termodinamičko modeliranje SUS motora u cilju analize poboljšanja njegovih performansi, što bi se moglo postići povećanjem količine izduvnih gasova hlađenih recirkulacijom. U toku pojave lupanja hlađeni izduvni gasovi recirkulišu u cilju kontrolisanja temperature u cilindru motora, pa prema tome i lupanja motora. Pored postignute redukcije temperature, analiza pokazuje da je toplotna iskorišćenost motora povećana za 12% recirkulacijom hlađenih izduvnih gasova.
Abstract
Engine knocking acts as an obstruction for improving the engine performance, hence limiting the compression ratio below the highest usable compression ratio (HUCR). Even though the design condition is kept much below HUCR, knocking occurs during the long-running conditions due to the reduction in the heat carrying capacity of the coolant. The present study focuses on the prediction of knocking from the acoustic signals produced by the engine using Wavelet theory. Thermodynamic modelling of the spark ignition engine is done to analyse the performance enhancement that could be achieved by increasing the amount of cooled exhaust gas recirculation (EGR). During the occurrence of knocking, cooled exhaust gas is recirculated to control the in-cylinder temperature and hence the knocking. In addition to the reduction in temperature, the analysis shows that the thermal efficiency of the engine has increased about 12% with the cooled EGR.
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Reference
|
|
|
Antonio, J., Gireesh, K.T. (2015) Analysis of performance enhancement in SI Engine using reciprocating compressor and expander. Journal of Chemical and Pharmaceutical Sciences, Special, issue 6, pp. 8-13
|
|
|
Antonio, J., Jinsha, R., Shihabudeen, H., Gireesh, K.T. (2015) Real-time analysis for reducing engine knocking using EGR. International Journal of Advanced Research Trends in Engineering and Technology, Vol. 2, Special issue 10
|
|
 
|
Curto-Risso, P.L., Medina, A., Hernández, A. C. (2008) Theoretical and simulated models for an irreversible Otto cycle. Journal of Applied Physics, 104(9): 094911
|
|
8
|
Daubechies, I. (1992) Ten lectures on wavelets. u: Reg. Conf. Ser. Appl. Math, Philadelphia: SIAM, br. 61
|
|
1
|
Douaud, A.M., Eyzat, P. (1978) Four-Octane-Number Method for Predicting the Anti-Knock Behavior of Fuels and Engines. u: SAE Technical Paper Series, Institute Francais du Petrol, SAE 780080
|
|
8
|
Heywood, J.B. (1988) Internal combustion engine fundamentals. New York: McGraw-Hill
|
|
1
|
Keisuke, K., Junichi, K., Shinji, K., Tomohiko, J. (2009) A model widely predicting auto-ignition time for gasoline engines. Toyota Central R&D Labs INC - Mechanical Engineering Department, Tech. report
|
|
1
|
Knop, V., Michel, J., Colin, O. (2011) On the use of a tabulation approach to model auto-ignition during flame propagation in SI engines. Applied Energy, 88(12): 4968-4979
|
|
|
Laurent, D., van Gilles, C.B.T., Pierre, L. (2002) Noise robust spark ignition engine knock detection with redundant wavelet transform. u: Modal Analysis, Noise and vibration engineering (ISMA), International Seminar, Sep., Leuven, Belgium
|
|
1
|
Li, N., Zhou, M. (2008) Audio Denoising Algorithm Based on Adaptive Wavelet Soft-Threshold of Gain Factor and Teager Energy Operator. u: International Conference on Computer Science and Software Engineering, Vol. 1, pp: 787-790
|
|
|
Lounici, M.S., Loubar, K., Balistrou, M., Tazerout, M. (2011) Investigation on heat transfer evaluation for a more efficient two-zone combustion model in the case of natural gas SI engines. Applied Thermal Engineering, 31(2-3): 319-328
|
|
|
Michel, M., Yves, M., George, O., Jean-Michel, P. Wavelet toolbox for use with MATLAB, user's guide, version 3. The MathWorks
|
|
1
|
Ollivier, E., Bellettre, J., Tazerout, M., Roy, G.C. (2006) Detection of knock occurrence in a gas SI engine from a heat transfer analysis. Energy Conversion and Management, 47(7-8): 879-893
|
|
|
Raghuveer, M.R., Ajit, S.B. (2004) Wavelet transforms: Introduction to theory and applications. Pearson Education
|
|
|
Soman, K.P., Ramachandran, K.I., Reshmi, N.G. (2011) Insight into wavelets from theory to practical. PHI Learning Pvt Ltd, Third Edition
|
|
1
|
Vimal, K.V.R., Babu, A.P. (2009) Features of wavelet packet decomposition and discrete wavelet transform for malayalam speech recognition. International Journal of Recent Trends in Engineering, vol. 1, no. 2, May
|
|
|
Worret, R., Bernhardt, S., Schwarz, F., Spicher, U. (2002) Application of Different Cylinder Pressure Based Knock Detection Methods in Spark Ignition Engines. u: International Spring Fuels and Lubricants Meeting and Exhibition, SAE Technical Pape, 01-1668
|
|
|
Yasar, H., Soyhan, H.S., Walmsley, H., Head, B., Sorusbay, C. (2008) Double-Wiebe function: An approach for single-zone HCCI engine modeling. Applied Thermal Engineering, 28(11-12): 1284-1290
|
|
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