RESEARCH AND DEVELOPMENT OF EVALUATION CRITERIA OF MOTOR VEHICLES ACOUSTIC COMFORT


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Abstract

Ensuring the set level of acoustic comfort in passenger compartments of motor vehicles (hereinafter – MV) and low levels of external noise represents the important direction in their design and improvement. One of the important tasks in this process is the development of the objective criteria that characterize the attainable level of acoustic comfort of the developed construction of a vehicle. Well-known methods and objective criteria for assessment of acoustic comfort are characterized by limited load and high-speed modes of operation, complexity of interpretation and ranging of the obtained results, and insufficient correlation with results of the subjective expert opinion. The paper analyzes results of experimental studies of internal noise of 70 models of motor vehicles (cars) of the domestic and foreign manufacturers executed in road and bench test conditions. Road acoustic tests were carried out on public roads, moving with intensive acceleration, stabilized speeds, and motion with the engine switched off. Bench acoustic tests were carried out on motionless samples of motor vehicles in the conditions of a full-scale whirl tube and a big semi-anechoic acoustic chamber. In the course of analysis of the obtained results the researcher assesses statistical distribution of the studied parameters; the nature of their change depending on the load and high-speed modes of operation; chronological tendencies. The studied samples of MV are ranged into four categories of acoustic comfort in each of the studied modes of acoustic tests. The model of formation of a complex index of MV acoustic comfort has been developed based on the parameters of noise levels, levels of sound pressure at frequencies of motor harmonicas, and articulation indexes. Contribution of each of the acoustic parameters measured on various modes of tests is defined by empirical coefficients of weight. Objective criteria of ranging the acoustic parameters in various load and high-speed modes of operation can be used in technical requirements to design of the new and modernization of the existing models of MV. The complex index of acoustic comfort is offered to be applied for determination of competitiveness level and perfection of MV design within the target group of analogs.

About the authors

Aleksandr Valentinovich Krasnov

Togliatti State University, Togliatti

Author for correspondence.
Email: kaw@ya.ru

PhD (Engineering), assistant professor of Chair “Management of industrial and environmental safety”

Россия

References

  1. Dings J. Can you hear us? Belgium, T&E – European Federation for Transport and Environment, 2008. 12 p.
  2. Galevko Yu.V., Shchepkin A.I., Fesina M.I. Issues of MV noise in ITC UNECE (to the 50th anniversary of the Geneva Convention of 1958). Zhurnal avtomobilnykh inzhenerov, 2008, no. 4, pp. 36–43.
  3. Environmentally Friendly Vehicles and the World Forum for Harmonization of Vehicle Regulations (WP.29). 2003–2012: Ten Years of Progress and Future Trends. Geneva, UNECE, 2013. 39 p.
  4. Fastl H., Zwicker E. Psychoacoustics. Facts and Models. Berlin, Springer-Verlag, 2007. 471 p.
  5. Geib W. Schallflub im Automobil. ATZ, 1991, no. 9, pp. 562–576.
  6. Rossi F., Nicolini A., Filipponi M. An Index for Motor Vehicle Passengers Acoustical Comfort. The 32nd International Congress and Exposition on Noise Control Engineering. Korea, 2003, pp. 1–8.
  7. Prasad M.S., Watkins S., Wang X., Hill S., Weymouth D. Rating criteria for vehicle in-cabin noise with emphasis on HVAC system operation. Int. J. Vehicle Noise and Vibration, 2009, vol. 5, no. 1-2, pp. 175–191.
  8. Genuit K. Sound-Engineering im Automobilbereich. Methoden zur Messung und Auswertung von Geräuschen und Schwingungen. Berlin, Springer-Verlag, 2010. 610 s.
  9. Sliggers J. A noise label for motor vehicles: towards quieter traffic. Informal document GRB-61-01. 61st GRB. Rome, 2015, pp. 1–18.
  10. Pflüger M., Brandl F., Bernhard U., Feitzelmayer K. Fahrzeugakustik. Wien, Springer-Verlag, 2010. 222 s.
  11. Lyon R.H. Product Sound Quality - from Perception to Design. Sound and Vibration Magazine, 2003, no. 3 (March), pp. 18–22.
  12. Bowen D.L. Correlating Sound Quality Metrics and Jury Ratings. Sound and Vibration Magazine, 2008, no. 9 (September), pp. 12–14.
  13. Kim T.G., Lee S.K., Lee H.H. Characterization and quantification of luxury sound quality in premium-class passenger cars. Journal of Automobile Engineering, 2009, vol. 223, no. 3, pp. 343–353. doi: 10.1243/09544070JAUTO989.
  14. Nakasaki R., Hasegawa H., Kasuga M. Subjective evaluation of sound images of air-conditioning system in a vehicle. Acoust. Sci. & Tech., 2011, vol. 32, no. 4, pp. 137–142.
  15. Bodden M. Instrumentation for Sound Quality Evaluation. ACUSTICA. Acta acustica, 1997, vol. 83, pp. 775–783.
  16. Robinson D., Hawksford M. Psychoacoustic models and non-linear human hearing. AES 109th Convention. Los Angeles, 2000, pp. 11–14.
  17. Consolidated Resolution on the Construction of Vehicles (R.E.3). World Forum for Harmonization of Vehicle Regulations. 161th session. Geneva, 2014, pp. 1–102.
  18. GOST R 51616. Avtomobilnye transportnye sredstva. Shum vnutrenniy. Dopustimye urovni i metody ispytaniy [Motor vehicles. Internal noise. Permissible levels and methods of tests]. Moscow, Izdatelstvo standartov Publ., 2000. 19 p.
  19. RF Government order “Standards and Recommended Practices on safety of wheeled vehicles” of September 10, 2009 no. 720 (in Russian).
  20. GOST R 41.85-99. Edinoobraznye predpisaniya, kasayushchiesya ofitsialnogo utverzhdeniya dvigateley vnutrennego sgoraniya ili system elektrotyagi, prednaznachennykh dlya privedeniya v dvizhenie mekhanicheskikh transportnykh sredstv kategoriy M i N, v otnoshenii izmereniya poleznoy moshchnosti i maksimalnoy 30-minutnoy moshchnosti system elektrotyagi [Uniform provisions concerning the approval of internal combustion engines or electric drive trains intended for the propulsion of motor vehicles of categories M and N with regard to the measurement of the net power and the maximum 30 minutes power of electric drive trains]. Moscow, Izdatelstvo standartov Publ., 2001. 32 p.
  21. Fisina M.I., Krasnov A.V., Gorina L.N. Avtomobilnye akusticheskie materialy. Proektirovanie i issledovanie nizkoshumnykh konstruktsiy avtotransportnykh sredstv [Automobile sound proof materials. Development and research of low noise designs of motor vehicles]. Togliatti, TGU Pulb., 2010, part 1, 304 p.

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