…JIS (Japanese Industrial Standards) classifies land-use oils into type 1 (for light loads), type 2 (for medium loads), and type 3 (for heavy loads), and marine-use oils into type 1, type 2 (all system oils), type 3 (system cylinder oil), and type 4 (cylinder oil). System oil is also called external oil, and is used to lubricate and cool various parts of the engine. Cylinder oil is also called internal oil, and is used to lubricate the pistons inside the cylinder. … *Some terminology explanations that mention "system oil" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…JIS(日本工業規格)では,陸用を1種(軽荷重用),2種(中荷重用),3種(重荷重用)に,また舶用を1種,2種(いずれもシステム油),3種(システムシリンダー油),および4種(シリンダー油)に区分している。システム油system oilは外部油ともいわれ,エンジン各部の潤滑および冷却を目的とする。シリンダー油sylinder oilは内部油ともいわれ,シリンダー内のピストンの潤滑に用いられる。… ※「system oil」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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