The Improvement of Environmental Protection through Motor Vehicle Noise Abatement

Authors: Z. Jovanovic, Z. Masonicic, S. Dragutinovic, Z. Sakota

Abstract:

In this paper, a methodology for noise reduction of motor vehicles in use is presented. The methodology relies on synergic model of noise generation as a function of time. The arbitrary number of motor vehicle noise sources act in concert yielding the generation of the overall noise level of motor vehicle thereafter. The number of noise sources participating in the overall noise level of motor vehicle is subjected to the constraint of the calculation of the acoustic potential of each noise source under consideration. It is the prerequisite condition for the calculation of the acoustic potential of the whole vehicle. The recast form of pertinent set of equations describing the synergic model is laid down and solved by dint of Gauss method. The bunch of results emerged and some of them i.e. those ensuing from model application to MDD FAP Priboj motor vehicle in use are particularly elucidated.

Keywords: Noise abatement, MV noise sources, noise source identification, muffler.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1123753

References:

[1] “Uniform provisions concerning the approval of motor vehicles having at least four wheels with regard to their noise emissions “, Regulation No.51, Proposal for amendments to the 03 series of amendments to Regulation No. 51, ECE/ TRANS/ WP29/ GRB/ 2015/ 3.
[2] M. E. Brown, S. J. Walsh, J. L. Horner, R. Chuter, "Noise source characteristics in the ISO 362 vehicle pass-by noise test: Literature review “, Applied Acoustics, 74 (2013), 1241-1265.
[3] Z. Jovanović "The role of tensor calculus in multidimensional numerical modeling of combustion in reciprocating engines", Chapter IX, Hemisphere Publishing Corporation- New York, 1989, pp. 451-542, ISBN 0-89116-392-1.
[4] Z. Jovanović, Ž. Šakota, Z. Masoničić, S. Dragutinović, Z. Živanović “The motor vehicle exhaust and intake system characterization by dint of cepstrum analysis”, XVI International Scientific-Technical Conference “TRANS&MOTOAUTO 09”, September 17-19, 2009, Sea Resort Sunny Beach, Bulgaria, Proceedings, Volume I, ISSN 1313-5031, 11-14.
[5] P.O.A.L. Davies, K.R. Holland “IC Engine Intake and Exhaust Noise Assessment”, Journal of Sound and Vibration 223(3), (1999), 425-444.
[6] AVL BOOST Version 2010.1, edition 03, part 4.17, Acoustic elements, 2010.
[7] Min-Chie Chiu, Yung-Chun Chang “Shape optimization of multi-chamber cross-flow mufflers by SA optimization”, Journal of Sound and Vibration, 312 (2008), 526-550.
[8] Xiang Yu, Yuhui Tong, Yie Pan, Li Cheng “Sub-chamber optimization for silencer design”, Journal of Sound and Vibration, 351 (2015), 57-67
[9] Takashi Yasuda, Chaoqun Wu, Noritoshi Nakagawa, Kazuteru Nagamura “Studies on an automobile muffler with the acoustic characteristic of low-pass filter and Helmholtz resonator”, Applied Acoustics 74 (2013) 49-57.
[10] Z.Jovanovic, Z.Masonicic, Z.Sakota "Noise reduction of buses manufactured by FAP d.o.o.", Research project No.14039, Serbian Ministry of Education, Science and Technological Development, p.1-949, 2005-2008