Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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A Study for Shift Qulity and Durability of Manual Transmission Oil

MTM OIL의 변속성능과 내구성에 대한 연구

  • Cha Sang Yeob (Research & Development Division, HYUNDAI-MOTOR COMPAY) ;
  • Yang Si Won (Daeduk Institute of Technology, SK Corporation)
  • 차상엽 (현대자동차(주) 연구개발본부) ;
  • 양시원 (SK 주식회사 대덕기술원)
  • Published : 2003.11.01
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Abstract

Synchronizer ring performance is strictly required in order to extend manual transmission oil drain interval. Zn type additive, which is used as dispersant and anti-wear additive instead of SP additives in manual transmission oil, is applied to improve Synchronizing function and durability. But only Zn type additive is not suitable for high torque transmission because it has not good extreme pressure characteristics. We research on the synchronizer friction and extreme pressure properties in according to change additive types. As a result, it was found that the use of non-active extreme pressure and friction modifier additives has benefit in the improvement of synchronizer friction characteristics and durability.

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