Under the elastohydrodynamic lubrication(EHL) of an eccentric cam-sapphire disk contact

surface energy gradient of the disk was prepared to form an oleophilic track with enhanced replenishment. The EHL film thickness and oil reservoir distribution in the eccentric cam-disc contact area under limited lubricant supply were obtained by the optical interference lubricating oil film measurement system

and the influence of oleophilic track on the lubrication of the contact was analyzed. The results show that the tension driving induced by the disk surface energy gradient enhances the lubricant replenishment and increases the central film thickness of the contact zone

and the regulation effect of oleophilic track makes the inlet oil reservoir expand 1.6 to 4.7 times at low speed and light load. The oleophilic track shows a remarkable effect on regulating the distribution of lubricant. Lubricant of high viscosity will decrease lubricant replenishment in ole-ophilic track. The oleophilic track can improve the lubrication state of different oils. The difference in the effect of oleophilic track can be formed with different oil supply amount.