日韩欧免费一区二区三区,久久中文字幕久久久久91,久久综合亚洲伊人色

CN

Engine lubrication system and cooling system

When the engine is running, the friction surfaces (such as crankshaft journals and bearings, camshaft journals and bearings, piston rings and cylinder walls, timing gear pairs, etc.) make relative movement at high speeds, and the friction between metal surfaces Not only the power consumption inside the engine is increased, and the working surfaces of the parts are quickly worn; the heat generated by friction may also cause the surface of some working parts to melt, causing the engine to malfunction. Therefore, in order to ensure the normal operation of the engine, the surface of the relatively moving parts in the engine must be lubricated, that is, the friction surface is covered with a layer of lubricant (oil or grease), and a thin oil film is separated between the metal surfaces to reduce Friction resistance, reduce power loss, reduce wear, and extend engine life.
TOP
置標出錯:找不到模板:f:\usr\LocalUser\qyw8083450001\en/include/other.ascx
主站蜘蛛池模板: 剑阁县| 万全县| 内乡县| 金华市| 南充市| 尖扎县| 钟山县| 黔江区| 景宁| 宝兴县| 南江县| 松江区| 濮阳县| 苍山县| 竹北市| 万盛区| 米林县| 景东| 南部县| 融水| 佛学| 雷州市| 内丘县| 芮城县| 孟津县| 兴业县| 茂名市| 虹口区| 大名县| 吴忠市| 鄢陵县| 大厂| 来宾市| 香河县| 武乡县| 五河县| 嘉禾县| 南溪县| 乌兰县| 沭阳县| 大余县|