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Engine technology has been the main interest of many studies during the past two centuries. A complex computer model has been developed to study the effects of coated and uncoated compression rings on the output torque effect during running-in when the ring is free to rotate around the piston groove or fixed in the groove.

Internal combustion engine components have been a main research interest over many decades [1]. The structural mechanics and dynamics of the piston rings has been a large focus of work in order to gain a greater understanding of the how the piston ring dynamics affect the piston ring. Piston rings are designed to create a seal which means that they will suffer large levels of material loss due to wear during operation. To further the understanding of the ring allows for a more accurate estimate of its behaviour.