... for further improvements, particularly in the broader field of lubrication, including areas like grease. As in any mechanical system, greases and lubricants play a significant role in the component life of EV power plants and drivetrains. Moreover, they can significantly contribute to vehicle efficiency...

... wear (TW) are the most common problems when applying conventional machining (CM) and hybrid machining processes, i.e., additive manufacturing (AM) followed by milling, resulting in a meagre final product finishing. Regarding cooling/lubricating environments, miscellanea of methods can be effectively...

...Xiaohan Zhang; Yao Liu; Wenbin Duan; Zhaogang Jing; Feng Guo; Peng Liang; Ling Ma This study investigates the film formation mechanism of lubrication using a small quantity of lubricating medium in a water environment. A roller-on-disc test rig combined with a fluorescent technique is employed...

... is vital for ensuring the smooth lifting and lowering of the submersible. The plunger pair, which constitutes the most significant friction pair in plunger pumps, plays a pivotal role in determining both the service life and volumetric efficiency of the pump through its friction, lubrication, and sealing...

...Leonardo I. Farfan-Cabrera; Seungjoo Lee; Sean Skowron; Ali Erdemir Considering the growing interest in increasing the performance and efficiency of driveline components of modern electric vehicles, this work aims to analyze and report the wear mechanisms and notable enhancement of the lubrication...

...Prasad Sanjaykumar Sanap; Rohan Sangam Singh Thakur; Amit Prabhakar Pratap To overcome the issues related to low-temperature characteristics and thermal degradation of fatty acid-based lubricant base stocks, chemical modification is essential. To mitigate these shortcomings, considering unsaturated...

...Lucas Hildebrand; Philipp Beierer; Thomas Lohner; Karsten Stahl For the reliable operation of a gearbox, consistently sufficient lubrication of machine elements is necessary. Thus, the gearbox fluid flow plays an important role. The state of the art indicates that computational fluid dynamics (CFD...

...Hao Ji; Tao Yu; Xiaohan Zhang; Feng Guo; Peng Liang; Gerhard Poll Previous research has revealed that introducing a secondary lubricating medium can temporarily enhance water-lubricated bearing performance, thereby reducing the risk of lubrication failure under challenging conditions. This study...

...Scott Bair; Wassim Habchi Seventeen years have passed since the first full elastohydrodynamic lubrication (EHL) simulation employed the real pressure and shear dependence of viscosity measured in viscometers to accurately predict film thickness and friction. This is the appropriate time...

... 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...

... Stiffness Characteristics of Double-Row Angular Contact Ball Bearings Under Different Working Conditions ,” Lubricants , 11 ( 2 ), p. 44 . 10.3390/lubricants11020044 [11] Xu , H. , Wang , P. , and Ma , H. , 2022 , “ Contact Characteristics Analysis of Deep Groove Ball Bearings Under...

... the dynamic film-forming behavior of lubricating grease under steady-state and micro-oscillation conditions. It is found that free water causes a brief rise in the grease film under steady-state conditions, specifically due to the grease-water phase connecting the oil reservoirs on both sides. The experiment...

... elastohydrodynamic lubrication hard disk drives lubricants magnetic bearings seals Magnetic torque M × H and viscous torque ( ω p − Ω ) in ferrofluid flow generate the rotational viscosity in ferrofluids [ 1 , 56 , 57 ]. In the presence of the magnetic field, the fluid and particles...

... to the adhesion and abrasion mechanism generated between the contact surfaces. In this work, the ball-on-flat experiments were performed on stainless steel-420 versus 100cr6 friction pairs under dry, minimum quantity lubrication (MQL) and pool conditions. Then, the wear studies in terms of volume loss, profile...

...Zhiqiang Liu; Jiandong Yin; Fucheng Zhao Downsizing in spark-ignited engines becomes one of the most effective concepts to achieve fuel economy and emissions requirements and drives operating conditions of major moving engine components into more mixed and boundary lubrication regimes. Piston ring...

...Robert J. Sadinski; Carl H. Hager, Jr.; William M. Hannon The relative volume and falling body viscosity of a common high-pressure rheology reference lubricant, di-(2-ethylhexyl) sebacate (DEHS), are presented. Relative volume measurements up to 300 MPa are completed with a piezo-bellows relative...

... Corresponding author. Emails: harshaap@gmail.com ; apharsha.mec@itbhu.ac.in Email: opkhatri@iip.res.in Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 02 12 2021 08 03 2022 09 03 2022 03 05 2022 boundary lubrication...

...Justino A. O. Cruz; Pedro M. T. Marques; Jorge H. O. Seabra; Jorge D. Castro This work studies the power loss in a real axle box gear transmission under no-load operating conditions. The influence of the rotational speed and of the lubricant viscosity was considered. An experimental strategy...

...Boris Grigor’ev; Artem Eliseev The upper convected Maxwell (UCM) model is one of the ways to describe lubricant’s viscoelasticity. In this paper, a new modified Reynolds equation for the UCM model is derived. This equation may be called extended as compared to its analogs because it incorporates...

...Fan Zhang; Nicolas Fillot; Rudolf Hauleitner; Guillermo E. Morales-Espejel A first cavitation modeling with thermal effects for oil/refrigerant solutions lubricated elastohydrodynamic point contacts is reported in this work. The solubility of the oil/refrigerant system is introduced...