Presentations -
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Developments of a Vibration-free I.C. Piston Engine Based on a “Basement and Radial” Configuration Design (Design Theory for the Compact and non-Combustion Operation of 2nd Prototype Engine)
Haruki USHIMARU, Gen TAKASE, Yojiro ISHINO, Yu SAIKI
2024.12
Event date： 2024.12
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
A novel engine geometry, which is named provisionally as "basement and radial configuration", was proposed and investigated in this paper. The geometry gives a vibration-free and kinematic energy fluctuation-free property to motions of plural parts; i.e. pistons. A single radial arm rotor drives all the moving pistons in this configuration. In this study, a prototype three-cylinder internal combustion engine based on the geometry was designed and manufactured. The specifications of the prototype engine are as follows: the number of cylinders of 3, a piston displacement of 21cc x 3, a cylinder bore of 30 mm, a piston stroke of 30 mm, a compression ratio of 4.9, propane as fuel, a valve system of a rotary valve. A trial operation of the prototype engine resulted in the achievement of firing operation (8.1W output at 311 rpm) without any support of electrical motor and so on. This paper gives the pressure variations in the three combustion chambers on the firing condition. The theory and design for a compact 2nd prototype engine were reported. Especially the detailed design of the mechanism of crankshaft rotation, which consists of main-crankshaft, sub-crankshafts, split needle bearings, and a radial arm rotor, has also been provided.
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Development of a 100% Ammonia firing Package Burner of 20kW Class
Yojiro ISHINO, Kenji NISHIZAWA, Yuki MATSUI, Kakeya WATANABE, Yu SAIKI
2024.11
Event date： 2024.11
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Developments of a Vibration-free I.C. Piston Engine Based on a “Basement and Radial” Configuration Design (Firing Engine Operation of the 1st Prototype Engine and Design Theory for the Compact 2nd Prototype Engine)
Haruki Ushimaru, Momoka Komeda, Gen Takase, Ryosuke Hibi, Yojiro Ishino
2024.05
Event date： 2024.05
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
A novel engine geometry, which named provisionally as "basement and radial configuration", was proposed and investigated in this paper. The geometry gives a vibration-free and kinematic energy fluctuation-free property to motions of plural parts; i.e. pistons. In this configuration, all the moving pistons are driven by a single radial-arm-rotor. In this study, a prototype three-cylinder internal combustion engine based on the geometry was designed and manufactured. The specifications of the prototype engine are as follows: a number of cylinders of 3, a piston displacement of 21cc x 3, a cylinder bore of 30 mm, a piston stroke of 30 mm, a compression ratio of 4.9, propane as fuel, a valve system of a rotary valve. A trial operation of the prototype engine resulted in achievement of firing operation (8.1W output at 311 rpm) without any support of electrical motor and so on. In this paper the pressure variations in the three combustion chambers on the firing condition was provided. The theory and design for a compact 2nd prototype engine was also reported.
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Developments of a Vibration-free I.C. Piston Engine Based on a “Basement and Radial” Configuration Design (Firing Engine Operation of the 1st Prototype Engine and Design Theory for the Compact 2nd Prototype Engine)
2024.05
Event date： 2024.05
Language：Japanese Presentation type：Poster presentation
Country：Japan
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Development of Tele-Existence Thermal Haptics Robot Arm System for Experiencing Remote Interactive Thermal(hot/cold) Environment（Prototype Design of a Haptic Exoskeleton Wearable Arm Device and Reproducibility of Remote Temperature Environment Provided by Wearable Device）
Kaito Kawamura, Kumi Yamane, Takashi Ichikawa, Yojiro Ishino
2023.10
Event date： 2023.10
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
In this study, the development of the tele-existence robot arm in which human beings can experience not only the haptic environment but also the thermal (hot/cold) environment was focused on. In this report, the temperature transmission system was actually developed, and the trial operations were conducted. A comparison between reproductivities of two types of thermal control units of wearable device to generate a cold environment was made. For the development of a proper wearable device, it is important to design the configuration of joints of the wearable device so as to allow every motions and postures of an operator without any interruption. A prototype design of a wearable arm device, originated from a collar bone joint, with a novel (111) isometric shoulder configuration, was also introduced.
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新型・無振動内燃ピストンエンジンの実動作の確認（ベース・ラジアル機構を利用した設計）
米田百花，日比瞭介，牛丸春貴，石野洋二郎
自動車技術会2023年秋季大会 第６回学生ポスターセッション 2023.10 自動車技術会
Event date： 2023.10
Language：Japanese
Venue：名古屋 Country：Japan
無振動，一定運動エネルギーの物体運動を与える機構である「ベース・ラジアル機構」を見出した．この機構に基づけば，多様なエンジン・流体機械の設計が可能となるが，本研究では，低振動な内燃エンジンの設計・試作を行いった．発表では，設計理論の説明と，本試作エンジンの燃料による自立運転の結果の報告を行う．
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Development of Tele-Existence Haptics Robot Arm System for Force and Thermal (hot/cold) Environments(Prototype Design of a Novel Shoulder Configuration Haptic Exoskelton Wearable Arm Device Originated from Collar bone Joint)
Yojiro ISHINO,Tetsuji TSUKADA,Kumi YAMANE,Kaito KAWAMURA
2023.06
Event date： 2023.06 - 2023.07
Country：Japan
Robot systems capable of experiencing remote environments are urgently required for future lack of manpower and aging society. In this study, the development of the tele-existence robot arm system in which human beings can experience not only the haptic environment but also the thermal (hot/cold) environment was focused on. In this system, operator's shoulder and arm should be restricted by an exoskelton wearable device to get motion and posture information of a remote robot arm. For development of a proper wearable device, it is important to design the configuration of joints of the wearable device so as to allow every motions and postures of an operator without any interruption. Especially, a shoulder joint of human is so functional that the reproduction by a simple mechanical structure has been almost difficult. In this report, prototype design of a wearable arm device, originated from collar bone joint, with a novel (111) isometric shoulder configuration, was introduced.
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Development of Tele-Existence Haptics Robot Arm System for Force and Thermal (hot/cold) Environments (Improvement in Reproducibility of Remote Environments Provided by Wearable Haptic Device)
Kumi YAMANE, Tetsuji TSUKADA, Kaito KAWAMURA, Yojiro ISHINO
2023.06
Event date： 2023.06 - 2023.07
Language：Japanese Presentation type：Poster presentation
Country：Japan
Robot systems capable of experiencing remote environments are urgently required for future lack of manpower and aging society. In this study, the development of the tele-existence robot arm in which human beings can experience not only the haptic environment but also the thermal (hot/cold) environment was focused on. In this report, the temperature transmission system was actually developed, and the trial operations were conducted. In the operations, a remote finger-tip-like temperature measuring unit touching a moderately (50degC)-heated test block (aluminum) transmitted a PWM signal of a temperature variation to an on-site wearable unit. Consequently, the reproduction of the remote temperature sensing data was succeeded by controlled heating based on the transmitted information in the wearable unit. In this paper, first, the reproducibility was indicated by the result of the positive(hot) temperature variation of the temperature measurement unit of the on-site finger probe in the wearable unit. Second, comparison between reproductivities of two types of thermal controll units of wearable device to generate a cold environment was made.
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Multi-Directional Schlieren 3D-CT(Computer Tomography) measurement of Ammonia-Air Premixed Flames on an Open-type Swirl Burener
2022.11
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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A Vibration-free I.C. Piston Engine Based on a "Basement and Radial" Configuration Design (Construction of the Prototype Engine and Investigation of the Firing Engine Operation)
2022.11
Event date： 2022.11
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Development of Tele-Existence Thermal Haptics Robot Arm System for Experiencing Remote Interactive Thermal Environment (Reproducibility of Remote Temperature Environment Provided by Wearable Device)
Kumi Yamane，Tetsuji Tsukada，Yojiro Ishino
2022.10
Event date： 2022.10
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Microscopic Image Diagnostics with Visible Emission Light for Self-burning Surface Temperature Distribution of CFRP (Carbon Fiber Reinforced Plastic) in Oxygen International conference
Yojiro Ishino，Rion Ito
2022.08 Pacific Center of Thermal Fluids Engineering (PCTFE)＆The Visualization Society of Japan (VSJ)
Event date： 2022.08
Language：English Presentation type：Oral presentation (general)
Country：Japan
Carbon Fiber Reinforced Plastic(CFRP) has been widely used in variety industries because of its high strength-density ratio. Therefore disposal method of waste CFRP should be considered in advance now. We have been proposed a combustion incineration of carbon fiber(CF) residue after recycle use. However, carbon fiber residue is almost impossible to be burned out by even high temperature burnt gas because of extremely high melting point of carbon fiber and a low oxygen concentration in burnt gases[1].
In this study, self-sustained combustion of carbon fiber in oxygen has been reported. In order to obtain information of the self-sustaining mechanism of the combustion, in this paper, a convenient optical technique to acquire the 2D distribution of high surface temperature of glowing solid material was conducted.
In this technique, magnified thermographic view of the high temperature specimen was provided by comparison between RGB brightness information of conventional photograph of the visible light emission of the surface and previously-calculated values from Planck's law and the spectral sensitivity of the camera system.
In this paper, first, accuracy of the method was verified by comparison between the 2D temperature distribution result of a glowing fine (0.5 mm dia.) graphite rod in burnt gas of a propane-air premixed laminar flame and its estimated temperature distribution measured by PR-type thermocouple and compensated by Kaskan's method. Next magnified instantaneous 2D temperature diagnostics of self-burning carbon fiber bundle in oxygen was made. The 2D surface temperature distribution result gives very high temperature over 2900 K on carbon fiber surface in in-oxygen combustion incineration. -
Development of a Vibration-free I.C. Engine Based on a "Basement and Radial" Configuration Design and Investigation on its Properties in Firing Engine Operation
2022.07
Event date： 2022.07
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Research and Development of a Novel Vibration-free I.C. Piston Engine Based on a "Basement and Radial" Configuration Design
Takuma Oikawa, Momoka Komeda, Yojiro Ishino
Event date： 2022.07
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Development of Tele-Existence Thermal Haptics Robot Arm System for Acquiring and Experiencing Remote Thermal Environment
Tetsuji Tsukada, Ryo Sugiura, Kumi Yamane, Yojiro Ishino
2022.07
Event date： 2022.07
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Three-dimensional Measurements of Turbulent Ammonia Flames by Multi-Directional Schlieren CT(Computer Tomography) Technique
Yojiro Ishino, Tomoya Kunishima, Yuki Matsui, Yuki Mori
2022.07
Event date： 2022.07
Language：Japanese Presentation type：Oral presentation (general)
Country：Japan
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Multi-Directional Schlieren 3D-CT(Computer Tomography) Measurement of Instantaneous Temperature Distributions of Turbulent Flames (Improvement in accuracy with Standard Refractive Index Gas Jets )
Yojiro Ishino, Tomoya Kunishima, Yuki Mori, Xiangdong Cao,Yuki Matsui
Event date： 2021.10
Language：Japanese Presentation type：Oral presentation (general)
Non-scanning 3D-CT(Computer Tomography) technique using a multi-directional quantitative schlieren system with flash light sources has been proposed to obtain instantaneous 3D density distributions of flames, supersonic jets and etc. This "Schlieren 3D-CT" is based on (i) simultaneous acquisition of flash-light schlieren images taken from numerous directions, and (ii) 3D-CT reconstruction of the images by an appropriate CT algorithm. In this paper, accuracy of this technique is evaluated and verified by checking with a standard refractive index distribution of a helium jet. Next, the verified 3D distribution of refractive index of premixed flames are successfully converted to appropriate temperature distribution.
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Temperature Measurement of Self-burning CFRP(Carbon Fiber Rainforced Plastic) in Oxygen (Image Diagnostics of High Surface Temperature with Visible Light Emission)
Yojiro Ishino, Yumiko Ishihara
Event date： 2021.10
Language：Japanese Presentation type：Oral presentation (general)
Carbon fiber is almost impossible to be burned out by even high temperature burnt gas because of extremely high melting point of carbon fiber and a low oxygen concentration in burnt gases. In previous studies, self-sustained combustion of carbon fiber in oxygen has been reported. In order to obtain information of the self-sustaining mechanism of the combustion, in this paper, a convenient optical technique to acquire the 2D distribution of high surface temperature of glowing solid material was conducted. In this technique, magnified thermographic view of the high temperature specimen was provided by comparison between RGB brightness information of conventional photograph of the visible light emission of the surface and previously-calculated values from Planck's law and the spectral sensitivity of the camera system.
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THREE-DIMENTIONAL MEASUREMENT ON THERMAL STRUCTURE OF SIX CLUSTERED METHANE-AIR DIFFUSION MICROFLAMES International conference
Yuta Uchida, Harumi Kondo, Zhaojin Diao, Taro Hirasawa, Michael Winter, Yojiro Ishino, Kozo Saito
The Second Pacific Rim Thermal Engineering Conference ASTFE, JSME, KSME
Event date： 2019.12
Language：English Presentation type：Oral presentation (general)
Venue：Maui, Hawaii, USA
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ウエアラブル＆ロボットアームで遠隔地の温・力触覚環境を体験！
石野洋二郎，鶴谷 敏之，杉浦 良，ENKHTUR Bayarjavkhlan
名工大テクノフェア2019 名古屋工業大学
Event date： 2019.11
Language：Japanese Presentation type：Poster presentation
Venue：名古屋工業大学
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