现有的各类发动机的活塞气环都存在着磨损后开口间隙增大、影响密封的弊病。近年来采用的多孔镀铬活塞环,虽然在一定程度上减少了磨损,但仍未解决开口间隙漏气,导致发动机功率下降的问题。单槽双气环活塞从结构设计上保证了气环的密封性,从而减少了功率损失,延长了气环及活 The piston rings of all kinds of engines in the prior art have the drawback that the gap between the openings increases after the wear and affects the sealing. In recent years, the use of porous chrome-plated piston rings, although to a certain extent reduce the wear and tear, but still not solve the open gap leakage, resulting in decreased engine power problems. Single-slot double-ring piston from the structural design to ensure the sealing of the gas ring, thus reducing the power loss, extending the ring and live