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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.

For decades the operational dynamics of the compression ring during operation, have been subject to debate [1, 2, 3, 4, 5, 6, 7]. A complex computer simulation, using Design Of Experiments (DOE) methodology, was developed to study the effect of the compression ring rotation during running-in stages. Response Surface (RS) has been used to optimize ring displacement, as function of ring mass, width and radius. The optimised surface response has been compared to used compression rings and has shown a 2% variation between calculated and measured values.

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.