Author : Abhinav Sharma 1
Date of Publication :21st October 2021
Abstract: The combustion process of internal combustion (IC) engines show variations from one cycle to another even if the speed, load and all other engine parameters are kept constant. These variations and disturbances in engine combustion parameters are called cyclic variations. There are different methods for analyzing cyclic variations like coefficient of variation (COV) method, correlation coefficient, wavelet transform, artificial neural network etc. Indicated mean effective pressure, heat release rate, pressure rise rate and maximum cylinder pressure are the different combustion parameters whose cyclic variability is analyzed. Wavelet transform method is very effective technique for analyzing cyclic variations in combustion parameters of diesel engine. It can simultaneously give information about the magnitude as well as the locations of cyclic variations in a diesel engine.
Reference :
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- R. Tily and C. J. Brace “Analysis of cyclic variability in combustion in internal combustion engines using wavelets,” Proc. Inst. Mech. Eng. Part D J. Automob. Eng., vol. 225, no. 3, pp. 341–353, 2011
- A. K. Sen, R. Longwic, G. Litak, and K. Górski “Analysis of cycle-to-cycle pressure oscillations in a diesel engine,” Mech. Syst. Signal Process., vol. 22, no. 2, pp. 362–373, 2008.
- K. Sen, G. Litak, R. Taccani, and R. Radu “Wavelet analysis of cycle-to-cycle pressure variations in an internal combustion engine,” Chaos, Solitons and Fractals, vol. 38, no. 3, pp. 886–893, 2008.
- M. R. Saxena and R. K. Maurya “Characterization of Cycle-to-Cycle Variations in Conventional Diesel Engine Using Wavelets,” Energy, Environ. Sustain., pp. 135–155, 2018.
- Z. Yang, T. Steffen, and R. Stobart “Disturbance sources in the diesel engine combustion process,” SAE Tech. Pap. 2013-01-0318, vol. 2, 2013.
- R. K. Maurya, M. R. Saxena, and N. Akhil “Experimental Investigation of Cyclic Variation in a Diesel Engine Using Wavelets,” Intell. Syst. Technol. Appl., vol. 384, pp. 247– 257, 2015.
- R. K. Maurya and N. Akhil “Experimental Investigation on Effect of Compression Ratio, Injection Pressure and Engine Load on Cyclic Variations in Diesel Engine Using Wavelets,” SAE Tech. Pap. 2018-01-5007, pp. 1–13, 2018.
- A. K. Sen, R. Longwic, G. Litak, and K. Górski “Analysis of cycle-to-cycle pressure oscillations in a diesel engine,” Mech. Syst. Signal Process., vol. 22, no. 2, pp. 362–373, 2008.