…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. The above lubricating oils for internal combustion engines are used under the most severe conditions of all lubricating oils, so they require particularly excellent performance (suitable viscosity, high viscosity index - little change in viscosity due to temperature, oxidation stability, detergency and dispersibility, etc.). … *Some of the terminology that mentions "cylinder oil" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…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。以上の内燃機関用潤滑油は,数多い潤滑油のなかでも最も過酷な条件下で使用されるので,とくに優秀な性能(適切な粘度,高い粘度指数――温度により粘度の変化の少ないこと,酸化安定性,清浄・分散性など)が要求される。… ※「sylinder 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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