Technical Sessions (8 am Noon) 5A Aerospace – Coronado A 5BWear III – Coronado B 5C Condition Monitoring III – Mini Course and Papers: XRF for Lubrication Analysis – Coronado C 5D Seals I – Coronado D 5E Tribotesting – Coronado E 5F Lubrication Fundamentals V – Coronado F/G 5GMetalworking III – Fiesta 3/4 5H Commercial Marketing Forum V – Fiesta 5 5I Rolling Element Bearings I – Yucatan 1 5J No...

The solubility of fluorinated refrigerants in lubrication oil affects not only the stability performance of vapor compression refrigeration system, but also the safety control of start~up. It can cause oil foaming and reduction of viscosity, resulting in liquid slugging and improper lubrication. To void the deleterious effects, an oil heater is often used. But improper heater power can cause oi...

A mixed lubrication model is developed to investigate the lubrication of coupled journalthrust-bearing systems. The governing equations are mapped into a computational domain with a conformal mapping technique developed in a previous study by Wang et al. (2002). In order to study the influence of the boundary conditions on the performance of the bearing system, either the Reynolds boundary cond...

in order to reduce wear in gudgeon pin, bush and piston boss lubrication is done. oil used in national engine species was 10w40 with dynamic viscosity 5.5 mpa.s at 140 °c (the working temperature). in order to complete investigation the oil film hydrodynamics analysis in small end of connecting rod, a real full model engine with four cylinders has been simulated by avl excite5.1 software. in th...

Abstract Under severe conditions, solid contacts take place even when parts are lubricated. Precise mathematical conditions needed to describe the interior interface between fluid lubrication and solid-contact zones. In order distinguish for this from conventional boundary they named lubrication–contact (LCICs). work, LCICs derived with local flow continuity continuum mechanics point of view pr...

In this study, a practical numerical analysis has been developed in order to investigate the lubrication characteristics between a rolling piston and a crank of rotary compressors. This analysis is treated as a coupled problem of the momentum equations and the Reynolds equation of oil film. Using this analysis, the lubrication characteristics between the rolling piston and the crank for 2-cylin...

The achievement of high density at reasonable cost would be a definite advantage for the production of P/M components requiring high static and dynamic properties. The use of the electrostatic die wall lubrication technique appears as a very attractive route to promote densification. By reducing the level of friction at die walls, this technique should have the potential to also reduce density ...

The contribution deals with a self-consistent description of time-mean turbulent lubricant flow, i.e. flow through a wedgeshaped gap confined by counter-sliding solid surfaces. The methods adopted are matched asymptotic expansions, where the slenderness or aspect ratio of the gap and the accordingly defined Reynolds number represent the perturbation parameters. As a remarkable finding, a load-b...