The silent success of the pushbelt CVT

Erik van der Noll, Dirk Jan de Kuyper, Petra Zidkova, Georg Kurz, Ines Lopez Arteaga

Research output: Contribution to conferencePaperAcademic

Abstract

The use of Continuously Variable Transmissions (CVT) in automotive applications has seen a remarkably strong growth worldwide. Customers appreciate the excellent fuel efficiency and high level of comfort of CVT equipped drivelines. Besides smooth shifting, the high level of comfort is driven by the excellent NVH behaviour of the pushbelt. In order to be prepared for increasing requirements in noise behaviour, a study was performed to optimize the noise performance of the Pushbelt CVT. In this study the dynamic behaviour of the system is simulated by Finite Element Analysis (FEA) and validated by Experimental Modal Analysis (EMA). The resulting mode shapes are related to the noise radiation by means of Planar Near-field Acoustical Holography (PNAH). This measurement method enables the determination of acoustic quantities such as the pressure, particle velocity, and intensity by using the acoustic pressure measurements in the near field of the pulleys and pushbelt as an input. The results of this study are used to improve the noise performance of the pushbelt by optimizing the pushbelt element sequence of thicker and thinner elements.

Original languageEnglish
PagesFISITA2014/F2014-NVH-079
Publication statusPublished - 1 Jan 2014
EventFISITA 2014 World Automotive Congress - Maastricht, Netherlands
Duration: 2 Jun 20146 Jun 2014
http://www.fisita2014.com/

Conference

ConferenceFISITA 2014 World Automotive Congress
Abbreviated titleFISITA 2014
CountryNetherlands
CityMaastricht
Period2/06/146/06/14
Internet address

Keywords

  • CVT
  • Near-field Acoustical Holography
  • NVH
  • Pushbelt
  • Transmission

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    van der Noll, E., de Kuyper, D. J., Zidkova, P., Kurz, G., & Lopez Arteaga, I. (2014). The silent success of the pushbelt CVT. FISITA2014/F2014-NVH-079. Paper presented at FISITA 2014 World Automotive Congress, Maastricht, Netherlands.