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qi gang gai de chai zhuang yu wei hu
Author(s): 
Pages: 92
Year: Issue:  12
Journal: Farm Machinery Using & Maintenance

Abstract: 气缸盖的主要功用是密封气缸上部,与活塞顶部和气缸壁形成燃烧室,并承受气缸内气体压力.气缸盖内部有冷却水套,其端面上的冷却水孔与气缸体的冷却水孔相通,以便利用循环水来冷却燃烧室等高温部分.缸盖与缸体平面的密切贴合是靠衬垫的作用和缸盖螺栓螺母的正确旋紧.发动机在使用中,由于衬垫的变形及螺栓螺母的伸长,会使得缸盖和缸体的贴合变得松弛;气缸体与气缸盖接触平面会由于安装时缸盖螺栓扭矩不均匀,或在高温下拆卸等原因,可能会产生平面翘曲、拱曲现象.另外,由于气缸垫不平引起漏气、漏水,使缸盖下平面和缸体的上平面形成腐蚀斑点,螺孔周围出现凸起等不正常情况.
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