Methods for Researching Gear Whine in Automotive Transaxles

Paper #:
  • 1999-01-1768

Published:
  • 1999-05-17
Citation:
Dunn, A., Houser, D., and Lim, T., "Methods for Researching Gear Whine in Automotive Transaxles," SAE Technical Paper 1999-01-1768, 1999, https://doi.org/10.4271/1999-01-1768.
Pages:
12
Abstract:
In this paper, we discuss methods used to investigate a clearly audible gear whine problem in a modern automobile. Currently available PC-based computer software, coupled with more traditional engineering tools, such as spectrum analyzers, are employed to efficiently observe noise and vibration phenomena. Jury evaluations are conducted, using in-vehicle noise data, to rank actual gear whine levels. Additional jury studies using synthesized gear whine help us further understand listener preferences. Unloaded gear transmission error testing is explored as a means of predicting gear whine levels under light loads, such as those seen during highway cruising. We finally correlate many results to better understand the source and paths of the gear noise, and make recommendations for further exploration of this type of problem.
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