活塞环在运行状态下由于存在温度梯度而发生变形，导致活塞环开口附近接触状况变化和径向压力增加。
During the Operation of the engine the temperature graduate is likely to deform the piston ring, as may alter the contact situation at the opening of the piston ring and raise the radial pressure.
分别对开口有背压活塞环和整体无背压活塞环的工作原理和结构作了阐述。
The work principle and structures of backpressure piston rings and integral non-backpressure piston rings were expounded.
活塞环为便于拆换的开口环或分段环。
The piston ring is an opening loop or a grading ring which is convenient to disassemble and replace.
通过对活塞环加工过程中开口准确定位问题的分析，确定了一种定位精度高、生产效率高的加工工艺。
By analyzing the localization of cut in processing poston ring, this paper determined a new processing method for poston ring, which has high positioning accuracy and high production efficiency.
在一个活塞气环槽内设有上下二片活塞环，二片活塞环上的开口相互错开。
Upper and lower piston rings are arranged inside a piston gaseous ring groove, and openings on the two-piece piston rings are mutually staggered.
在一个活塞气环槽内设有上下二片活塞环，二片活塞环上的开口相互错开。
Upper and lower piston rings are arranged inside a piston gaseous ring groove, and openings on the two-piece piston rings are mutually staggered.
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