Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Tsuneaki ISHIMA"'
Autor:
Akito WATANABE, Kenta SATO, Moritsugu KASAI, Hisanobu KAWASHIMA, Hidekazu SUZUKI, Tsuneaki ISHIMA
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 922, Pp 23-00069-23-00069 (2023)
The oil film thickness of the piston ring at the sliding surface affects oil consumption, friction loss and wear of the ring and liner in internal combustion engines. It is important to know the oil film thickness on the piston ring sliding surface i
Externí odkaz:
https://doaj.org/article/7fbb3220473d4f70bd19409e1c1d75b0
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 917, Pp 22-00239-22-00239 (2022)
The purpose of this study was to elucidate collisions between droplets and a liquid film, where the liquid film and the droplets are composed of different liquids. Understanding this phenomenon is important to improve the environmental performance of
Externí odkaz:
https://doaj.org/article/788748e382a94a27a569bff3410970ea
Publikováno v:
Journal of Fluid Science and Technology, Vol 17, Iss 1, Pp JFST0003-JFST0003 (2022)
We propose a method to estimate atomized spray droplet size distribution for multi-hole type nozzles for direct injection gasoline (DIG) engines. In the development of injector nozzles, important factors are spray quality such as spray pattern, penet
Externí odkaz:
https://doaj.org/article/4e93731b0f8f4366bddd1c469e0fefa9
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 87, Iss 901, Pp 21-00143-21-00143 (2021)
The impingement of a single droplet on a liquid film is observed using a high-speed video camera. Specifically, an experiment is conducted to simulate the impingement behaviors of a fuel droplet on an engine oil film in a real engine. The droplets ar
Externí odkaz:
https://doaj.org/article/c7a182a76b3f4edca9675f956eeb8f93
Autor:
Katsuhiko SUGITA, Takahiro MIYAOKA, Shuichi UMEZAWA, Shuichi OHMORI, Hisanobu KAWASHIMA, Tsuneaki ISHIMA
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 87, Iss 902, Pp 21-00035-21-00035 (2021)
Water spray is used for cooling intake air of gas turbine in thermal power plant. It is necessary to reduce the amount of residual droplets by optimizing the spray amount to keep the plant in good condition. In the actual thermal power plants, a phas
Externí odkaz:
https://doaj.org/article/aaf29b7922bc476ab1badb9198558047
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 87, Iss 895, Pp 20-00338-20-00338 (2021)
Droplet impingement to wet wall is observed and classified. The wet wall has a thin liquid film which is different kind of liquid from the droplets. The present study models the droplets impingements to wet engine walls in gasoline engine. The altern
Externí odkaz:
https://doaj.org/article/26bfa53cccf04f07b448fdd64e879952
Autor:
Tsuneaki ISHIMA, Asuka TAKATSUKI, Takahiro MIYAOKA, Katsuhiko SUGITA, Shuichi OMORI, Shuichi UMEZAWA, Hisanobu KAWASHIMA
Publikováno v:
Mechanical Engineering Journal, Vol 7, Iss 4, Pp 20-00115-20-00115 (2020)
Air cooling performance and water spray characteristics are experimentally evaluated to obtain the basic knowledge for the suction air cooling of power plant. Novel optical measurement technique is proposed for measuring spatial number density of wat
Externí odkaz:
https://doaj.org/article/f0cb0be70907474ab0a9cdfd28940552
Autor:
Asuka TAKATSUKI, Katsuhiko SUGITA, Keitaro MOTOI, Takahiro MIYAOKA, Shuichi OMORI, Shuichi UMEZAWA, Hisanobu KAWASHIMA, Tsuneaki ISHIMA
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 884, Pp 19-00030-19-00030 (2020)
A suction air cooling by water spray has been used for inlet air of gas turbines. The cooling performance depends on spray characteristics and surrounding conditions. The aims of this study are to understand the spray characteristics under the variou
Externí odkaz:
https://doaj.org/article/3346654070324fc88864ed93328de335
Publikováno v:
Advances in Mechanical Engineering, Vol 10 (2018)
In order to precisely measure water impact loads of a spherical structure vertically dropping onto a calm water surface, a new validity check of the analysis using the levitation mass method experiment is proposed. The main feature of levitation mass
Externí odkaz:
https://doaj.org/article/b45b91218ea84412b7fefcc2da72683d
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 850, Pp 17-00054-17-00054 (2017)
Water spray is used for cooling suction air of gas turbine for power augmentation. Cooling efficiency depends on the spraying properties. The aim of this study is to investigate the spray characteristics and the influence of secular change in the spr
Externí odkaz:
https://doaj.org/article/6e83972c8f644b8ea644e0b940a48f54