Abstract
The shape of the barrel surface is an important parameter of the piston ring, and it is also one of the key factors determining the lubrication state of the cylinder liner-piston ring friction pair. To research the influence of barrel surface shape on the lubrication performance of cylinder liner piston ring, a transient three-dimensional lubrication model of cylinder liner piston ring is established by combining the average Reynolds equation and green wood formula. The lubrication performance of this friction pair under different working conditions and different cylinder surface shape is analysed, which provides the basic numerical research for the shape optimization of piston ring.
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