目前,全国汽车发动机和内燃机用汽缸垫,大都是铜皮包石棉汽缸垫。主要缺点是每年要消耗大量的铜,使用寿命短,不可靠。用在压缩比较高的高速顶置气阀发动机上可靠性就更差,不能满足使用要求。我厂生产的6100发动机,起初采用中间夹二层铁丝布橡胶石棉、上包铜皮、下包铁皮的汽缸垫。所有油孔、水孔包铜皮护圈,结构复杂,成本高,密封性差,使用很不可靠。汽 At present, the national automobile engine and cylinder engine cylinder gasket, mostly copper bag asbestos cylinder pad. The main disadvantage is that every year to consume a large amount of copper, short life, unreliable. Used in the high compression ratio high-speed overhead valve engine on the reliability of even worse, can not meet the requirements. I plant the production of 6100 engine, initially used in the middle folder two layers of wire cloth rubber asbestos, the bag of copper, under the cover of the metal cylinder pad. All oil holes, water holes copper package retainer, complex structure, high cost, poor sealing, the use of very unreliable. steam