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English to Japanese: Sealability Properties of Fluorine-free Fire-fighting Foams General field: Tech/Engineering Detailed field: Chemistry; Chem Sci/Eng
Source text - English Abstract
This contribution compares the sealability performance of recently developed three synthetic foam formulations (that do not contain fluorosurfactants or fluoropolymers) with that of an aqueous film forming foam (AFFF). We apply the sealability methodology outlined in the Australian Defence Force Specification, DEF(AUST)5706. This methodology specifies a
0.28 m2 small-scale indoor fire pan. The pan is first filled with 10 L of water and then 5 L of
AVGAS (aviation gasoline, flash point of -50 oC) or heptane (flash point of -4 oC) is placed on top of the water. Foams were generated from a pressurised extinguisher with a foam nozzle as described in the standard’s specification, set to create foams with expansion of 4:1. The foam spread across the fuel until the entire fuel surface was covered with foam. At 5-min intervals, a lit taper was introduced into the space above the pan area by passing it twice around the surface of the foam in a circular motion at a height of approximately 15 mm from the surface of the foam. The results demonstrate differences in the sealability performance between AFFF and fluorine-free foams (FfreeF). Under laboratory conditions, with a foam blanket 1-2 cm deep, best-performing FfreeF formulation (RF6) provides about 30% of the durability of an AFFF for protection against evaporation of low-flashpoint flammable liquids. We also note in the results the significant differences among FfreeF with almost no sealability of AVGAS vapours offered by the two other formulations.
Japanese to English: Development of Inverter-Integrated Motor Units General field: Tech/Engineering Detailed field: Automotive / Cars & Trucks
Source text - Japanese 1. はじめに
M社はこれまでi-MiEV、アウトランダーPHEVなどの駆動用モータを開発し、実用化してきた。[1][2]
昨今、EV・HEV用コンポーネントは、限られた車両スペースに搭載できるよう、更なる小型・軽量化、及び高効率化と低価格化が要求されている。M社では、これらの要求を満足する為に、モータ＆インバータ一体化システムを開発してきた。
一体化による利点は、モータとインバータ間の３相高圧ケーブル、冷却ホース、信号線削減などによる、車載時のデッドスペースの縮小、軽量化などが挙げられる。（図1）
Translation - English 1. Introduction
In the past, Company M has developed and commercialized drive motors for i-MiEV, Outlander PHEV, etc. [1] [2]
In recent years, components for EVs and HEVs have been required to be smaller in size and lighter in weight to fit into a limited vehicle space, and higher in efficiency and lower in price. Company M has developed inverter-integrated motor units to satisfy these requirements.
The advantages of inverter-motor integration include reduced dead space in the vehicle and reduced weight through elimination of the three-phase high-voltage cable, cooling hose, and signal wire between the motor and inverter (Fig. 1).
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Bachelor's degree - Meiji Gakuin University
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Years of experience: 19. Registered at ProZ.com: May 2007.
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