“Z”型组合式封气环是一种国家级高新专利技术产品。它在往复活塞式内燃发动机和气体压缩机上做封气环。现有活塞都是多环结构。然而,环数越多,活塞环组的摩擦损失越大,往复惯性质量也越大,且第一道环热负荷,机械负荷最高,而润滑条件最差,因而磨损最快。为解决这些问题,世界各国都在研究旨在减少活塞环数的新型活塞环。日本、美国在轿车发动机上已试装了二道活塞环。但是,由于现有活塞环在开口处与气缸壁始终存在直通式漏气通道,其使用效果并在理想。“Z”型组合式封气环从结构上实现了对活塞缸套之间的环形空间的全密封。它的封气、控(机)油,传热、工作寿命等主要性能指标都超过现有的国内外活塞环。它的结构特点又特别适用于高转速轿车发动机。因此,应用“Z”型组合式封气环,能够全面提高和改善发动 “Z” -type combined gas seal ring is a national high-tech patented technology products. It is on the reciprocating piston internal combustion engine and gas compressors make gas ring. The existing pistons are multi-ring structure. However, the more the ring number, the greater the friction loss of the piston ring group, the greater the reciprocating inertia mass, and the first ring heat load, the highest mechanical load, and the worst lubrication conditions, which wear the fastest. To solve these problems, all over the world are studying a new type of piston ring aimed at reducing the number of piston rings. Japan, the United States in the car engine has been installed on two piston rings. However, the conventional piston ring always has a through-type air leak channel between the opening and the cylinder wall, and its effect is satisfactory. The “Z” type composite air ring provides a structural seal to the annular space between the piston liners. Its sealing gas, control (machine) oil, heat transfer, working life and other major performance indicators are more than the existing domestic and international piston ring. Its structural features are particularly suitable for high-speed car engine. Therefore, the use of “Z” type composite gas ring, can improve and improve the overall launch