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: 曲麻莱县| 丹凤县| 万源市| 华容县| 额敏县| 甘谷县| 遵义县| 阿图什市| 洛川县| 宝应县| 清水河县| 仪征市| 明水县| 南江县| 壶关县| 仙居县| 庐江县| 海宁市| 庐江县| 仙居县| 安达市| 文水县| 吉木乃县| 林甸县| 碌曲县| 柳州市| 固始县| 天镇县| 华蓥市| 朝阳区| 临邑县| 阿克陶县| 荔浦县| 天峻县| 灵寿县| 手机| 平山县| 游戏| 东宁县| 静海县| 收藏|