Half-Toroidal Traction Drive Continuously Variable Transmission for Automobile Propulsion Systems (Traction Drive Materials, Transmission Design and Efficiency)

Hisashi Machida, Hitoshi Hata, Masaki Nakano, Hirohisa Tanaka

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Environmental issues such as exhaust emission have stimulated the development of a flexible transmission for an engine-vehicle propulsion system. The authors have been researching and developing the rolling-type CVT, continuously variable transmission, of a half-toroidal traction drive for about 14 years. It represents engineering achievement in the fields of heat treatment technology of rolling elements which transmit tangential force at a maximum Hertzian pressure of 2.7 GPa, and of molecular design technology of synthetic traction fluid which works in the temperature range of -30 to 140°C. The paper shows the design principle of rolling element fatigue life and shear strength of traction fluid at high temperature, and discusses the performance of two types of CVTs of a single cavity with 80kW and a double cavity with 200 kW transmission capacity.

    Original languageEnglish
    Pages (from-to)1154-1160
    Number of pages7
    JournalTransactions of the Japan Society of Mechanical Engineers Series C
    Volume59
    Issue number560
    DOIs
    Publication statusPublished - 1993 Jan 1

    Keywords

    • Automobiles
    • Continuously Variable Transmission
    • Fatigue Life
    • Power Transmission
    • Traction Drive
    • Traction Fluid

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Industrial and Manufacturing Engineering

    Fingerprint Dive into the research topics of 'Half-Toroidal Traction Drive Continuously Variable Transmission for Automobile Propulsion Systems (Traction Drive Materials, Transmission Design and Efficiency)'. Together they form a unique fingerprint.

  • Cite this