Investigation of effects of additive for ATF and test condition on pitting life of gear tooth in the FZG pitting test

Toshihiko Ichihashi, Yutaka Takakura, Susumu Matsumoto

研究成果: Conference contribution

抄録

The reduction in viscosity of Automatic Transmission Fluids (ATFs) for improving fuel economy results in a reduction in transmission gear fatigue life due to occurring pitting. The aim of this study is to establish a suitable test condition for evaluating differentiation in the gear pitting life between ATFs by using a Forschungsstelle fur Zahnrader und Getriebebau (FZG). In this study FZG gear sets were modified so that gear teeth were misaligned and the contact tooth width was shortened by offset in the direction of the shaft. The fatigue pitting life in response to ATFs under this modified FZG test condition was of the same order as that obtained in the actual transmission test under a severely offset condition. A sulfur-containing additive could play a role on the gear tooth life under severe condition, which was most likely attributed to tribofilm for motion on the gear tooth surface.

本文言語English
ホスト出版物のタイトルAmerican Society of Mechanical Engineers, Tribology Division, TRIB
ページ225-227
ページ数3
DOI
出版ステータスPublished - 2011
イベントASME/STLE 2011 International Joint Tribology Conference, IJTC 2011 - Los Angeles, CA
継続期間: 2011 10 242011 10 26

Other

OtherASME/STLE 2011 International Joint Tribology Conference, IJTC 2011
CityLos Angeles, CA
Period11/10/2411/10/26

ASJC Scopus subject areas

  • Mechanical Engineering
  • Materials Science(all)

フィンガープリント 「Investigation of effects of additive for ATF and test condition on pitting life of gear tooth in the FZG pitting test」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル