Noise Control Transmission Methods of the Combustion Engine by Means of Reduction of the Vibration

• Autorzy: Žiaran S. , Chlebo O.

Identyfikatory

DOI

10.1515/aoa-2016-0027

• Języki publikacji: EN

Abstrakty

EN

Transmission of vibroacoustic energy from an internal combustion engine (ICE) to its surroundings largely depends on how it is mounted, on available transmission paths and on the construction of the vehicle body and/or its surrounding structures. This is especially true in low speed engines in enclosed areas which generate perceptually weak noise, but strong low-frequency waves which energy has a negative impact on human health, comfort and driving safety especially in prolonged exposure to the source. The primary aim of the article was to analyse components of the ICE unit which had a determining impact on the reduction of low-frequency waves. Thus, the structurally transmitted noise from the ICE to its surrounding structure (body of the passenger vehicle) was analysed. The results of the vibroacoustic measurements were compared to modal analysis in order to determine possible resonance sources in the vehicle body and/or for assessing the influence of the vehicles safety gear on the generated vibroacoustic energy transfer into the cabin area of the passenger vehicle. Measurements were made for a passenger vehicle at rest and operating in its most common operational speed as well as for the stationary ICE of a cogenerate unit (CGU). Measurements and FFT analysis were used for the detection of the vibroacoustic energy sound pressure level (noise) and mechanical vibration. Firstly, the low-frequency noise sources were determined and their direct effects on the human body were investigated. Finally, this paper suggests some measures which may contribute to the reduction of undesirable vibroacoustic energy in enclosed areas.

Słowa kluczowe

EN

combustion engine; low frequency waves; transmission; health; measures

PL

silnik spalinowy; fale niskiej częstotliwości; skrzynia biegów; zdrowie; środki

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2016
• Tom: Vol. 41, No. 2
• Strony: 277--284
• Opis fizyczny: Bibliogr. 26 poz., rys., wykr., fot.

Twórcy

autor

Žiaran S.

• Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, Nam. slobody 17, 812 31 Bratislava, Slovakia

autor

Chlebo O.

• Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, Nam. slobody 17, 812 31 Bratislava, Slovakia

Bibliografia

• 1. Argalasova L., Lekaviciute J., Jeram S., Sevcikova L., Jurkovicova J. (2013), Environmental Noise and Cardiovascular Disease in Adults, Research in Central, Eastern and South-Eastern Europe and Newly Independent States, [in:] Noise Health 2013; 62, 22–31.
• 2. Balazikova M., Sinay J. (2012) Implementation of Auditory and Non-auditory Effects of Noise in the Risk Assessment Process in Mechanical Engineering, [in:] Procedia Engineering, No. 48, p. 621–628, ISSN 1877-7058, http://www.sciencedirect.com/science/journal/18777058/48.
• 3. Darula R., Žiaran S. (2010a), Influence of Specific Noise on Driver’s Comfort, [in:] Proceedings of the 5th International Symposium Material – Acoustics – Place 2010, Zvolen, 55–58.
• 4. Darula R., Žiaran S. (2010b), Noise Exposition in Protected Rooms at Faculty of Mechanical Engineering Slovak University of Technology, [in:] 13th International Conference Mechanical Engineering Bratislava 2010, 30–37.
• 5. Leventhall H. G. (2004), Low Frequency Noise and Annoyance, Noise Health 2004, 6, 59–72.
• 6. Mirowska M. (1995), Results of Measurements and Limits Proposal for Low Frequency Noise in the Living Environment, J. Low Frequency Noise Vib., 14, 135–141.
• 7. Oresky J., Žiaran S., Chlebo O. (2012), Transmission of Vibroacoustic Energy Through Body of a Car, Noise and Vibration in Practice: Proc. of the 17th Inter. Acoustic Conference, Bratislava 2012, 65–70.
• 8. Pawlaczyk-Łuszczyńska M., Dudarewicz A., Szymczak W., Śliwińska-Kowalska M. (2010), Evaluation of Annoyance from Low Frequency Noise under Laboratory Conditions, Noise Health 2010, 12, 166–81.
• 9. Žiaran S. (2006), Vibration and Acoustic. Noise and Vibration Control in Industry [in Slovak], Monograph, Slovak University of Technology in Bratislava, pp. 332.
• 10. Žiaran S. (2008), Protection of Human Being against Vibration and Noise [in Slovak], Monograph, Slovak University of Technology in Bratislava, pp. 264.
• 11. Žiaran S. (2009), Analysis of Annoying Low Frequency Noise Boiler-rooms, [in:] InterNoise2009, Ottawa/Canada.
• 12. Žiaran S. (2010), Vibro- and Sound-isolation of the Low-frequency Noise of the Building Equipment, Inter-Noise 2010, Lisbon/Portugal, 3263–3272(10).
• 13. Žiaran S. (2011), Effects of Low-frequency Noise in Closed Space on the Human, InterNoise2011, Osaka/Japan.
• 14. Žiaran S. (2012), Low Frequency Noise from the Open Window in a Moving Car and its Effect on Human Beings, InterNoise 2012, New York/USA.
• 15. Žiaran S. (2013a), Low Frequency Noise and its Assessment and Evaluation, Archives of Acoustics, 38, 2, 253–270.
• 16. Žiaran S. (2013b), Low Frequency Vibration and Noise Generated by Seismic Sources and their Effects on Surroundings, InterNoise2013, Innsbruck/Austria.
• 17. Žiaran S. (2013c), Technical Diagnostics Scientific [in Slovak], Monograph, Issued by Slovak University of Technology Bratislava, pp. 332.
• 18. Žiaran S. (2013d), Potential Health Effects of Standing Waves Generated by Low Frequency Noise, Noise Health 2013, 15, 237–45.
• 19. Žiaran S. (2014a), Using Frequency and Modal Analysis to Attenuate Low Frequency Waves, InterNoise2014, Melbourne/Australia.
• 20. Žiaran S. (2014b), The Assessment and Evaluation of Low Frequency Noise Near Region of Infrasound, Noise Health 2014, 16, 10–7.
• 21. Žiaran S. (2016), Low Frequency Noise and Vibration [in Slovak], Monograph, Issued by STU Bratislava 2016, pp. 316.
• 22. Žiaran S., Chlebo O. (2015a), Transmission of Vibroacoustic Energy Through the Structure of a Car Body into the Protected Area and its Control, EuroNoise 2015, Maastricht, EAA-NAG-ABAV, p. 491–496.
• 23. Žiaran S., Chlebo O. (2015b), Exposure to Low-frequency Noise from the Boiler-plant to the Apartment Svabinskeho Street [in Slovak], Research Report FME STU Bratislava.
• 24. Žiaran S., Musil M., Cekan M., Chlebo O. (2013), Analysis of Seismic Waves Generated by Blasting Operations and their Response on Buildings, International Journal of Environmental, Earth Science and Engineering, 7, 11.
• 25. ISO 1996-1:2003 Acoustics. Description, Measurement and Assessment of Environmental Noise. Part 1: Basic Quantities and Assessment Procedures, ISO copyright office Case postale 56 • CH-1211 Geneva 20.
• 26. ISO 10846-1:1998 Acoustics and Vibration. Laboratory Measurement of Vibro-acoustic Transfer Properties of Resilient Elements. Part 1: Principles and Guidelines, ISO copyright office Case postale 56 • CH-1211 Geneva 20.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.