... control ring–cylinder liner conjunction of lubricants with anti-wear additives, varying dispersant concentration, and a range of friction modifiers. Experiments are conducted at a range of temperatures on a cylinder liner with a nickel silicon carbide coating. A novel motored reciprocating tribometer...

...Chunjie Wei; Hui Song; Zhaowen Hu; Wei Wang The tribological performance of scrolls lubricated with CO 2 /oil mixture is investigated using a combination of the mixed lubrication model and the homogeneous model. The physical characteristics of the CO 2 /oil mixture were established prior to using...

.... Then, the experimental study is carried out on a power loss test bench. Based on the measured data and multiple linear regression method, the coefficients of the influencing factors are calculated, including gear design parameters, lubrication oil parameters, and operating conditions. To validate the prediction model...

...Chung-Hung Chan; Wen Huei Lim; Shoot Kian Yeong; Kien Woh Kow; Yong Kuen Ho A first-ever friction–wear model for four-ball extreme pressure (EP) lubrication is developed in this work based on 12 oil samples comprising minerals, esters, and other formulated lubricants. The model considers the rate...

...Akira Azushima; Akira Yanagida; Shojiro Tani Knowledge on the behavior of lubricant trapped in a surface pocket is important for improving metal forming technology, since the trapped lubricant affects friction and surface finishing. The permeation phenomena at higher reduction in height were...

...Rohit P. Ambekar; David B. Bogy; C. S. Bhatia As the head-disk spacing reduces in order to achieve the areal density goal of 1 Tb / in. 2 , the dynamic stability of the slider is compromised due to a variety of proximity interactions. Lubricant pickup by the slider from the disk is one of the major...

...Yu-Song Pan; Dang-Sheng Xiong; Xiao-Lin Chen The effects of different variables on the friction coefficient of poly(vinyl alcohol) (PVA) hydrogel and stainless steel ball counterpart were investigated by a ball-on-plate friction and wear tester. Factors included lubrication condition, sliding speed...

... and their physical properties were determined. They were also evaluated as promising lubricants for the contacts of aluminum on steel by using a SRV test rig. The tribological test results show that the synthetic ionic liquids exhibit better friction-reducing and antiwear abilities than the unsubstituted ionic...

... on, the hydrostatic pressure is calculated accompanied with reduction in height in upsetting of cylinders having a central conical impression or a central conical dent filled with lubricant on the top surface, using the rigid-plastic finite element method. The formulated is based on the plasticity theory...