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活塞环是内燃机及压缩机等活塞连杆机构中活塞上的一组零件,在气缸及活塞一对运动副中,起密封及调节润滑油等作用。气环(亦称压缩环)主要起密封作用;油环起刮油作用。内燃机的活塞环,汽油机一般由2~3道平环及1~2道油环组成,柴油机一般由3~4道平环及1~2道油环组成。以195柴油机为例(图1),由三道平环(第一道外圆镀铬)及二道油环组成。平环是一根
Piston ring is a set of internal combustion engine and compressor piston piston mechanism in a group of parts, a pair of pneumatic cylinder and piston play a role in sealing and regulating lubricants. Air ring (also known as compression ring) mainly from the sealing effect; oil ring from the oil scraping effect. The internal combustion engine piston ring, gasoline engine generally consists of 2 to 3 flat rings and 1 to 2 oil rings, the diesel engine generally consists of 3 to 4 flat rings and 1 to 2 oil rings. Taking 195 diesel engine as an example (Figure 1), it consists of three flat rings (the first round of chrome plating) and two oil rings. Flat ring is one