Browse Topic: Lubricating greases
This study reports a simulation model to predict the coating thickness during the Electric Discharge Coating (EDC) process and validates it with experimental analysis. Solid lubricant coating was developed on the mild steel substrate using WS2, and Cu (50:50) based green compact electrodes. The simulation model developed by using COMSOL Multiphysics (5.5) software and the accumulated growth height from the heavy species transport calculated as coating thickness. Experiments with the same input parameters and coating thickness were measured, compared with simulation result and the results show with error fraction of 3% to 12%. Therefore, the present developed simulation model can be employed to predict the thickness of solid lubricant coating by EDC process with minimum error
The automotive sector has always been closely connected with the lubricants industry, with the latter continuously developing new technologies, specs and products in order to address the evolution in this segment. Electrification represents a significant change in the major powertrains and, thus, it will inevitably affect the selection, development and market share of several types of lubricants, such as lubricating greases. The evolution of the EV/HV segment will increase the demand and the importance of lubricating greases for electric motors. New challenges for grease formulation may arise from the neighboring electric currents and electromagnetic fields and higher energy efficiency requirements. In this paper, the perspectives and the projected evolution of automotive e-mobility is reported and the subsequent influence on the main grease performance requirements are analyzed. Moreover, the alteration in the applications are examined. A series of lubricating grease formulations are
This standard applies to the aerospace and defense industries and their supply chain
This SAE Standard covers complete general and dimensional specifications for the various types of lubrication fittings and related threaded components intended for general application in the automotive and allied fields
This SAE Aerospace Information Report (AIR) contains data relative to the chemical nature of aerospace fluids and relates each to its empirical effect upon elastomeric components. Since the compatibilities of elastomers are determined by the compounding as well as the nature of the base polymer, the elastomers considered are limited to finished compounds for which material or performance specifications can be referenced
Dual mass flywheel (DMF) is an excellent solution to improve the noise, vibration, and harshness (NVH) characteristic of any vehicle by isolating the driveline from the engine torsional vibrations. For the same reason, DMF’s are widely used in high power-density diesel and gasoline engines. However, the real-world usage conditions pose a lot of challenges to the robustness of the DMF. In the present work, by capturing the Real-World Usage Profile (RWUP) conditions, a new methodology is developed to evaluate the robustness of a DMF fitted in a Sports utility vehicle (SUV). Ventilation holes are provided on clutch housing to improve convective heat transfer. Improvement in convective heat transfer will increase the life and will reduce clutch burning concerns. Cities like Mumbai, Chennai, Bangalore, roads will have clogged waters during rainy season. When the vehicle was driven in such roads, water enters inside the clutch housing through ventilation holes. Prolonged usage of vehicle in
See Tables 1A and 1B
The present work aims at investigating the tribological behavior of a newly developed friction materials and its performance is compared with the commercial brake pad under dry sliding conditions. The friction materials were made in the form of cylindrical pin from three different solid lubricants - graphite, molybdenum disulfide (MoS2) and graphene - keeping the other ingredients fixed. The prepared seven samples (BP01- Graphite, BP02- MoS2, BP03- Graphite &MoS2, BP04- Graphene, BP05- Graphene & Graphite, BP06 - Graphene & MoS2, BP07 - Graphene, Graphite & MoS2) were tested in pin and disc machine and compared to investigate the coefficient of friction, wear resistance followed by hardness test and thermal degradation analysis. The results showed that the wear loss and coefficient of friction of the developed friction materials were strongly influenced by the type and percentage of solid lubricants. The performance of the newly developed friction materials is better than the
This SAE Aerospace Information Report (AIR) describes two classes of lubricants which, when properly applied, can be used in oxygen systems and components
This SAE Recommended Practice was developed by SAE, and the section “Standard Classification and Specification for Service Greases” cooperatively with ASTM and NLGI. It is intended to assist those concerned with the design of automotive components, and with the selection and marketing of greases for the lubrication of certain of those components on passenger cars, trucks, and buses. The information contained herein will be helpful in understanding the terms related to properties, designations, and service applications of automotive greases
This specification covers the requirements for a refined paraffinic petroleum-base lubricant
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