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High Precision Control of Air Bubble Content in Working Oil

Research Project

Project/Area Number 18K03916
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionHosei University

Principal Investigator

Tanaka Yutaka  法政大学, デザイン工学部, 教授 (70179795)

Co-Investigator(Kenkyū-buntansha) 坂間 清子  国立研究開発法人産業技術総合研究所, 情報・人間工学領域, 研究員 (70773539)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords気泡 / 作動油 / 油圧動力伝達システム / 油の剛性 / 気泡分離装置 / 旋回流 / 気泡分離除去装置 / 気泡含有量 / 体積弾性係数 / 油圧システム / 油圧 / 気泡分離除去 / 流れの数値解析 / 油圧回路
Outline of Final Research Achievements

Mixing of air bubbles in the hydraulic oil in hydraulic power transmission systems causes deterioration of the dynamic characteristics of the system, erosion of component, accelerated deterioration of the hydraulic oil, reduction of heat dissipation, and vibration noise. In this research, we proposed and developed a method for high precision control of air bubble content by a swirling flow of working oil. The amount of air bubbles in the oil flowing out of a bubble separation device is adjusted by controlling the opening and closing of the valve on a vent port of the device. The air bubble content from an output port of the bubble separation device was precisely controlled by the opening time of the vent valve. The validity of the proposed method was experimentally and numerically verified.

Academic Significance and Societal Importance of the Research Achievements

油圧動力伝達システムの作動油に気泡が混入すると油の剛性を低下させ,振動・騒音や機器破損の原因となる.しかし作動油中にどの程度の気泡量が含有すると機器の性能を損ない故障に至るかの定量的な指標は明らかとなっていない.これは現状では,作動油中の気泡含有量を実時間で精度よく測定したり,調整したりすることが極めて難しいためである.
申請者らが本研究で独自に開発した作動油中の気泡含有量を高精度で任意に調整できる手法を用いて,気泡を含む作動油が原因となる機器の劣化や故障に至る定量的な評価が可能となり,その社会的意義は大きい.

Report

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

    (15 results)

All 2021 2020 2019 2018 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Estimating the Air Volume Fraction in Hydraulic Oil by Measuring the Effective Bulk Modulus2018

    • Author(s)
      Sayako Sakama, Yuki Kitazawa, Yoshiki Sugawara, Yutaka Tanaka
    • Journal Title

      11th IFK International Conference Proceedings

      Volume: 3 Pages: 79-85

    • DOI

      10.18154/RWTH-2018-224357

    • NAID

      130007864858

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Selective Separation of Air Bubbles from Working Oil by Bubble Elimination Device2021

    • Author(s)
      Yutaka Tanaka, Yusuke Kishi, Sayako Sakama
    • Organizer
      The 10th International Conference on Fluid Power Transmission and Control
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気泡を含む油の加圧減圧過程における挙動2020

    • Author(s)
      田中豊,岸優介,駒屋耕大,坂間清子
    • Organizer
      2020年秋季フルードパワーシステム講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Bubble elimination technology toward high performance of hydraulic systems2019

    • Author(s)
      Yutaka TANAKA
    • Organizer
      The 8th International Conference on Fluid Power and Mechatronics (FPM2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Performance Evaluation for Bubble Eliminator with CFD -Effect of Computational Model and Mesh-2019

    • Author(s)
      Ryo Takamizawa, Ryosuke Funachi, Sayako Sakama, Yutaka Tanaka
    • Organizer
      The 8th International Conference on Manufacturing, Machine Design and Tribology (ICMDT2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 油圧装置の気泡や水などの異物循環除去システム2019

    • Author(s)
      上西幸雄,田中豊
    • Organizer
      2019年春季フルードパワーシステム講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 作動油と空気を動力伝達媒体とするアクチュエータの制御に関する研究2019

    • Author(s)
      塩田秀人,北澤勇気,坂間清子,菅原佳城,田中豊
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 気泡分離装置による油中気泡径の選択的分離に関する研究2019

    • Author(s)
      高見澤 諒,坂間 清子,田中 豊
    • Organizer
      2019年秋季フルードパワーシステム講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 油の等価体積弾性係数の測定による気泡含有率の推定2019

    • Author(s)
      坂間 清子,田中 豊,菅原 佳城
    • Organizer
      第16回「運動と振動の制御」シンポジウム (MoViC2019)
    • Related Report
      2019 Research-status Report
  • [Presentation] Air Bubble Separation from Hydraulic Oils for Performance Improvement of Fluid Power Systems2018

    • Author(s)
      Yutaka Tanaka
    • Organizer
      第10回中国全国流体制御学会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] CFDを用いた気泡除去装置の性能評価(計算モデルと計算格子の影響)2018

    • Author(s)
      高見澤 諒,舟知 亮祐,坂間 清子,田中 豊
    • Organizer
      平成30年秋季フルードパワーシステム講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 気泡の混入による作動油の体積弾性係数の変化の実験的評価2018

    • Author(s)
      塩田秀人,坂間清子,菅原佳城,田中 豊
    • Organizer
      平成30年秋季フルードパワーシステム講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 気泡の混入による油圧システムにおける応答性低下とサージ抑制に関する研究2018

    • Author(s)
      北澤勇気,坂間清子,菅原佳城,田中 豊
    • Organizer
      平成30年秋季フルードパワーシステム講演会
    • Related Report
      2018 Research-status Report
  • [Remarks] 法政大学大学院先端モーションシミュレータ技術研究所(HAMS)

    • URL

      http://hams.ws.hosei.ac.jp/index.html

    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] 気泡含有量調整システム2019

    • Inventor(s)
      北村佳彬,伊藤隆,小寺康大,田中豊,坂間清子
    • Industrial Property Rights Holder
      北村佳彬,伊藤隆,小寺康大,田中豊,坂間清子
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-239249
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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

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