[导读]：1 干式缸套1 Dry cylinder liner干式缸套外壁不直接与冷却水接触，缸套的壁厚很薄，为1?3mm的薄壁圆筒。外圆要精磨，机体上的座?暖珩
1. Dry cylinder liner
干式缸套外壁不直接与冷却水接触，缸套的壁厚很薄，为1?3mm的薄壁圆筒。外圆要精磨，机体上的座?暖珩 磨，装入缸套后有时还要再精惶加工内表面，因此加工精度要求高。 它的特点是缸心S巨（相邻两气缸线间距离）短，结构紧凑，但散件较差，缸套厚度小，加工运输均不方便，只用于小型柴油机。
The outer wall of the dry cylinder liner is not directly in contact with the cooling water, and the wall thickness of the liner is very thin, which is a thin-walled cylinder of 1? 3mm. The outer circle needs to be finely ground, and the seat on the body needs to be honed warm. Sometimes the inner surface needs to be finely machined after being installed into the cylinder liner, so the machining accuracy is required to be high. It is characterized by large cylinder center s (distance between the center lines of two adjacent cylinders) and compact structure, but poor spare parts, small cylinder liner thickness, and inconvenient processing and transportation. It is only used in small diesel engines.
2. Wet Liner
二手洒水车湿式缸套壁厚与气缸直径之比一般为0.05?0.09 ,成圆筒形，上 部有凸缘，夕卜壁直接与冷却水接触，即由气缸套 外壁与机体的气缸孔壁共同构成冷却水腔。缸套外圆表面有2?3个 凸出的圆环带，用来与机体径向定位，圆环带外侧还有2?3道环 槽，用来安放耐油耐热的橡胶密封圈，作为水封。气缸套上部凸缘与 气缸孔上平面贴合，作为气缸的轴向定位面。
The ratio of the wall thickness of the wet cylinder liner of the second-hand sprinkler to the diameter of the cylinder is generally 0.05 × 0.09, which is cylindrical, with flange on the upper part, and the external wall of the cylinder liner and the cylinder bore wall of the engine block directly contact with the cooling water, that is to say, the external wall of the cylinder liner and the cylinder bore wall of the engine block together constitute the cooling water chamber. There are 2? 3 protruding ring belts on the outer surface of the cylinder liner, which are used for radial positioning with the engine body. There are 2? 3 ring grooves on the outer side of the ring belt, which are used to place oil resistant and heat-resistant rubber sealing rings as water seals. The upper flange of the cylinder sleeve fits the upper plane of the cylinder hole as the axial positioning surface of the cylinder.
湿式气缸套的优点是冷却效果好，而且气缸套内壁是事先加工好 的，制造和修理非常方便。但它使柴油机的缸心S劻吠，而且可能出 现干式缸套所没有的冷却水腔密封问题和气缸套的穴蚀问题。
The advantage of wet cylinder liner is good cooling effect, and the inner wall of cylinder liner is processed in advance, so it is very convenient to manufacture and repair. However, it makes the cylinder core of the diesel engine bark, and may cause the sealing problem of the cooling water cavity and the cavitation problem of the cylinder sleeve that the dry cylinder liner does not have.
带水套的气缸套适用于全焯接机体或铸焊组合式机体，目的是使 冷却水不与机体接触，避免焊缝受冷却水的腐蚀。冷却水自水套下方的进水口进入水套内腔，沿缸套外凸起的螺旋 式导流筋槽道（为减少流动阻力，也可无导流筋）上升后，经二手洒水车气缸套 支承凸肩上的一圈小出水孔进入气缸盖水腔。水套加热后与缸套装在 一起，用圆柱头内六角螺钉连接。安装、维修时缸套、ZK套一起从机 体中拆下或安装到机体上。
The cylinder sleeve with water jacket is applicable to the full blanching connecting body or the casting welding combined body. The purpose is to prevent the cooling water from contacting with the body and avoid the corrosion of the weld by the cooling water. The cooling water enters into the inner cavity of the water jacket from the water inlet below the water jacket, rises along the spiral guide rib groove protruding outside the cylinder liner (to reduce the flow resistance, there can be no guide rib), and then enters the water chamber of the cylinder head through a circle of small water outlet holes on the cylinder liner support shoulder of the second-hand sprinkler. After heating, the water jacket is sheathed with the cylinder and connected with the hexagon socket head screw. During installation and maintenance, the cylinder liner and ZK sleeve are removed from the engine body or installed on the engine body together.
All locomotive diesel engines use wet cylinder liners, the all cast body uses wet cylinder liners without water jacket, and the welded body or cast welded combined body uses cylinder liners with water jacket.
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