A tribological study of piston rings lubricated by power law oils

作者：Zavos Anastasios; Nikolakopoulos Pantelis G^*

来源：Proceedings of the Institution of Mechanical Engineers - Part J: Journal of Engineering Tribology , 2016, 230(5): 506-524.

DOI：10.1177/1350650115606481

• Piston rings
• Newtonian oils
• power law lubricants
• computational fluid dynamics
• spherical texturing

A 2D axisymmetric hydrodynamic model was developed considering fluid structure interaction analysis in order to solve the Navier-Stokes equations. The effect of lubricants viscosities in terms of both monograde and multigrade oils, on the produced piston ring friction force are compared, using smooth and textured piston rings. The novelty of the current paper is the solution of the Navier-Stokes equations with the use of power law lubricants, which act in non-Newtonian shear for the piston ring friction problem. The lubricant viscosity variation in relation to the temperature has been taken into account. Simulation shows a good prediction at lower loads and higher piston speeds. The hydrodynamic pressure, the oil film thickness and the friction force on smooth and textured flat piston ring are predicted and presented.

• 出版日期2016-5