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Synchronization and Stability of a 6 Power-Roller Half-Toroidal CVT

Research Project

Project/Area Number 16560115
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionYokohama National University

Principal Investigator

TANAKA Hirohisa  Yokohama National University, Graduate School of Mechanical Engineering, Professor, 大学院・工学研究院, 教授 (90092262)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2005: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2004: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsMachine element / Power transmission / Continuously Variable Transmission / Traction drive / Automobile / Toroidal / Speed ratio control / ハーフトロイダル / ボンドグラフ / 自動車用CVT / 電子油圧制御
Research Abstract

Upgrading both torque-capacity and downsizing are continuous issues for a half toroidal CVT. A 340Nm half-toroidal double-cavity CVT with 4 power rollers of 40mm in cavity radius was put into market in 1999. Following to this success, a challenge for transmitting higher torque with smaller size has been started. The design goal is set up to transmit 430Nm torque by using 6 power rollers of 36.5mm in radius instead of the conventional 4 rollers. This type of CVT has two features. One is mount-ability in a limited space of floor tunnel for a rear drive car by changing cross-sectional view from rectangular to circular ; and the other is reduction of non-uniform elastic deformation of the discs by contacting at three points on high torque transmission. This CVT has new scientific and design issues on equal torque transmission among 6 power rollers and stability of speed ratio control mechanism. This report presents the synchronizing mechanism and the stability analysis of these 6 power rollers by using bond graphs, and also measurement of efficiencies.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (6 results)

All 2005 2004

All Journal Article (6 results)

  • [Journal Article] ハーフトロイダル形無段変速機の圧力比例弁による変速比制御2005

    • Author(s)
      田中裕久, 大森将裕, 豊田 希
    • Journal Title

      自動車技術会、2005秋季大会講演論文集 20055620

      Pages: 1-5

    • NAID

      10022580492

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Speed ratio control of a half-toroidal CVT by using pressure proportional control valves2005

    • Author(s)
      Hirohisa Tanaka, Masahiro Oomori, Nozomi Toyoda
    • Journal Title

      JSAE, Annual Meeting in Fall No.20055620

      Pages: 1-5

    • NAID

      10022580492

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] ハーフトロイダル形無段変速機の非同期不安定問題の解析2004

    • Author(s)
      田中裕久
    • Journal Title

      自動車技術会論文集 35・1

      Pages: 141-145

    • NAID

      10024391523

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 6パワローラ・ハーフトロイダル形無段変速機の開発(第1報、機構と効率)2004

    • Author(s)
      豊田 希, 田中裕久
    • Journal Title

      自動車技術会 2004 春季大会講演論文集 20045006

      Pages: 5-9

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 6パワローラ・ハーフトロイダル形無段変速機の開発(トルク変動時の安定性)2004

    • Author(s)
      豊田 希, 田中裕久
    • Journal Title

      自動車技術会 2004 秋季大会講演論文集 20045675

      Pages: 10-14

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Development of a 6 power-roller Half-Toroidal CVT2004

    • Author(s)
      Tanaka, H., Toyoda, N.
    • Journal Title

      Proceedings of CVT2004, California 04CVT-36

      Pages: 1-6

    • NAID

      110004057604

    • Related Report
      2004 Annual Research Report

URL: 

Published: 2004-04-01   Modified: 2016-04-21  

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