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Development of innovative vibration absorber and its application for automatic transmission for cars

Research Project

Project/Area Number 18H01396
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 20010:Mechanics and mechatronics-related
Research InstitutionOita University

Principal Investigator

RYU TAKAHIRO  大分大学, 理工学部, 教授 (60230877)

Co-Investigator(Kenkyū-buntansha) 松崎 健一郎  鹿児島大学, 理工学域工学系, 教授 (80264068)
中江 貴志  大分大学, 理工学部, 准教授 (80579730)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Keywords回転体の振動 / 動吸振器 / 強制振動 / 非線形振動 / オートマチックトランスミッション
Outline of Final Research Achievements

In this study, a new centrifugal pendulum vibration absorber (CPVA) which is attached in the torque converter is developed to suppress the torsional forced vibration caused by the engine explosion. The path of the pendulum was assumed by a polynomial of the angle of rotation, and the optimal path to suppress torsional vibration for automatic transmissions was designed using a genetic algorithm by numerical calculation. It was found that the CPVA with the optimal path can more effectively reduce the torsional vibration than the CPVAs with the circular and epicycloidal paths. In addition, theoretical analysis and numerical calculation were performed for the slider crank type dynamic vibration absorber consisting of mass, inertia, and slider crank chain. As a result, it was found that there is an optimal link length ratio that can reduce the torsional vibration most, and that a greater suppressive effect can be realized by using an optimized slider crank type dynamic vibration absorber.

Academic Significance and Societal Importance of the Research Achievements

本研究では,エンジンを搭載した自動車の低燃費化と高出力化の実現を目指して,新たに生じた振動問題を飛躍的に低減させるため,リンク機構を用いた遠心振子式動吸振器を開発した.スライダクランク式動吸振器により,復元項と慣性項をともに調整可能であるとともに,最適なリンク長比を選択することで極めて振動低減に有効であることがわかったことは,学術的にも大きな意義がある.また,この設計法を用いることで,省気筒数化や高負荷低回転域でのロックアップ,さらには高出力化にも対応可能であり,低炭素社会をリードする先端技術開発として社会的意義は大きい.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (8 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] A study on torsional vibration suppression using centrifugal pendulum vibration absorber with slider-crank chain2021

    • Author(s)
      劉 孝宏, 松﨑 健一郎, 中江 貴志, 尾﨑 純也
    • Journal Title

      Transactions of the JSME (in Japanese)

      Volume: 87 Issue: 896 Pages: 20-00431-20-00431

    • DOI

      10.1299/transjsme.20-00431

    • NAID

      130008029735

    • ISSN
      2187-9761
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] FUNDAMENTAL STUDY ON SUPPRESSIVE EFFECT OF DYNAMIC ABSORBER TO SUBHARMONIC VIBRATION OF ORDER 1/2 IN AN AUTOMATIC TRANSMISSION FOR CARS2021

    • Author(s)
      Takahiro Ryu, Atsushi Kodama, Takashi Nakae, Kenichiro Matsuzaki
    • Journal Title

      Proceedings of ICSV27

      Volume: 1 Pages: 1-8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fundamental study on optimal desing of dynamic absorber to suppress subharmonic vibration of order 1/2 in automatic transmission for cars2019

    • Author(s)
      Risa Ueno, Takahiro Ryu, Takashi Nakae and Kenichiro Matsuzaki
    • Journal Title

      Proceedings of ICSV26

      Volume: 1 Pages: 1-8

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fundamental study on the optimal path of centrifugal pendulum vibration2019

    • Author(s)
      Takahiro Ryu, Takashi Nakae, Kenichiro Matsuzaki and Junya Ozaki
    • Journal Title

      Materials Science and Engineering

      Volume: 670 Issue: 1 Pages: 1-5

    • DOI

      10.1088/1757-899x/670/1/012004

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fundamental study on countermeasures against subharmonic vibration of order 1/2 in automatic transmissions for cars2018

    • Author(s)
      Fumiya Takino, Takahiro Ryu, Takashi Nakae, Kenichiro Matsuzaki and Risa Ueno
    • Journal Title

      MATEC Web Conf.

      Volume: 211 Pages: 1-6

    • DOI

      10.1051/matecconf/201821113004

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 自動車用 ATで発生するねじり振動を抑制するスライダクランク機構の遠心振子式動吸振器に関する基礎的研究2020

    • Author(s)
      尾﨑純也
    • Organizer
      Dynamics and Design Conference 2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 自動車用ATで発生する1/2次分数調波振動の動吸振器による制振に関する基礎的研究2020

    • Author(s)
      藤原嵩也
    • Organizer
      日本機械学会交通・物流部門大会 (TRANSLOG2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 自動車用ATのねじり振動を抑制する4回転連鎖型遠心振子動吸振器に関する基礎的研究2020

    • Author(s)
      佐野充
    • Organizer
      日本機械学会交通・物流部門大会 (TRANSLOG2020)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 自動車用ATで発生する1/2次分数調波振動に対する動吸振器の最適設計に関する基礎的研究2019

    • Author(s)
      兒玉篤志
    • Organizer
      日本機械学会九州支部沖縄講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 楕円軌道を用いた遠心振子式動吸振器の振動特性と自動車用ATへの適用2019

    • Author(s)
      佐野湧亮
    • Organizer
      日本機械学会九州支部沖縄講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 自動車用ATにおける遠心振子式動吸振器の最適軌道に関する基礎的研究2018

    • Author(s)
      後藤明
    • Organizer
      Dynamics and design conference
    • Related Report
      2018 Annual Research Report
  • [Presentation] 自動車用ATで発生する1/2次分数調波振動を抑制するダンパ特性の検討2018

    • Author(s)
      滝野文弥
    • Organizer
      日本機械学会九州支部北九州講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 自動車用ATで発生するねじり振動を抑制する遠心振子式動吸振器の軌道に関する基礎的研究2018

    • Author(s)
      後藤明
    • Organizer
      日本機械学会九州支部北九州講演会
    • Related Report
      2018 Annual Research Report
  • [Patent(Industrial Property Rights)] 遠心振子式吸振装置およびその設計方法2018

    • Inventor(s)
      劉孝宏
    • Industrial Property Rights Holder
      大分大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-149575
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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