Results 201 to 210 of about 14,490 (235)

On the effect of temperature in friction force measurements for a simplified piston cylinder set-up: Squeeze film combined with minimum oil film thickness measurements and viscosity index effect

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2023
The lubricated interface at the piston-ring and liner and its interaction with different lubricants and testing conditions is examined in terms of experimental measurements that show the minimum oil film thickness developed at the lubricated or depending on conditions partly lubricated conjunction and the surface interaction intensity, as measured from
Polychronis Dellis
exaly   +2 more sources

The effect of load and viscosity on the minimum operating oil film thickness of piston-rings in internal combustion engines

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2009
Computer simulations are now routinely used in the design and analysis of ring packs for internal combustion engines. Commonly they predict that an increase in engine load decreases minimum operating film thickness because oil availability and oil transport through the ring pack are reduced under these conditions.
S J Söchting, I Sherrington
exaly   +2 more sources

The Effect of Slotted Hole on Minimum Oil Film Thickness of Piston in Radial Piston Hydraulic Motor

ASME/BATH 2021 Symposium on Fluid Power and Motion Control, 2021
Abstract The cam-lobe radial-piston hydraulic motor, a multistroke low-speed high-torque motor, is widely used in large rotating machines such as winches, shield machines, and shredders, etc. There is a slotted hole on its pistons to reduce inertial force, which can simultaneously affect piston deformation.
Xiaolong Zhang, Junhui Zhang, Bing Xu, Zhixian Yang, Qi Zhao, Hongjuan Zhang   +5 more
openaire   +1 more source

Experimental Investigation of the Minimum Oil-Film Thickness in Spur Gears

Journal of Basic Engineering, 1963
As a pair of gears is loaded, the minimum oil-film thickness between the gear teeth decreases and can approach a magnitude equal to the magnitude of the surface roughness. Metal-to-metal contact then occurs between the microscopic peaks on both mating teeth surfaces.
D. W. Dareing, E. I. Radzimovsky
openaire   +1 more source

Oil Film Thickness measurements in a Dynamically Loaded Journal Bearing—A Comparison of Measured and Calculated Minimum Oil Film Thickness with Newtonian Lubricating Oils

SAE Technical Paper Series, 1988
<div class="htmlview paragraph">As previously reported an experimental apparatus has been built that allows direct measurement of the oil film thickness in a bearing that is subjected to dynamic toads and shaft speeds representative of those occurring in automobile engine connecting-rod, big-end bearings.
H.A. Tripp, A. Berker
openaire   +1 more source

Effect of Oil Aeration Rate on the Minimum Oil Film Thickness and Reliability of Engine Bearing

SAE Technical Paper Series, 1993
<div class="htmlview paragraph">In order to study the effect of the oil aeration rate on bearing reliability, the minimum oil film thicknesses(MOFT) were measured by the change of oil aeration rate using the total capacitance method(TCM), and at the same time, to study the appropriateness as an index of bearing reliability, crankshaft ...
Jae-Kwon Choi, Byeong-Soon Min, Dong-Chul Han   +2 more
openaire   +1 more source

Study of Cutting Speed Effects on Lubricant Oil Film Thickness Under Minimum Quantity Lubrication

2019
In recent decades, there has been increasing interest in the study of Minimum Quantity Lubrication (MQL) due to its outstanding performance despite the minimal usage of cutting oil. However, study focusing on the behavior of oil mist during the MQL machining process is still scarcely reported.
Nur Izzati Khoirunnisa Ismail, Nurrina Rosli, Kenji Amagai   +2 more
openaire   +1 more source

Paper 16: Minimum Allowable Oil Film Thickness in Steadily Loaded Journal Bearings

Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1963
There are various factors limiting the load carrying capacity of a steadily loaded journal bearing operating under hydrodynamic conditions. Two of these factors are considered. (1) Surface finish criterion Bearing and journal surfaces are slightly grooved due to machining processes, and when initial contact is made between the surfaces, it is only ...
openaire   +1 more source

Summary 1: The Influence of Engine Component Inertia Forces on Minimum Oil Film Thickness in Connecting Rod Big-End Bearings

Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1966
when Designing steadily loaded bearings the designer can usually predict the position of the journal centre quite easily with the aid of one of the many load carrying capacity/eccentricity relationships available. With dynamically loaded bearings, however, the journal path will vary in magnitude and direction throughout the loading cycle and one of ...
J. F. Booker, F. A. Martin
openaire   +1 more source

Predominant-Peak Surface Roughness, a Criterion for Minimum Hydrodynamic Oil-Film Thickness of Short Journal Bearings

Journal of Fluids Engineering, 1957
Abstract The minimum hydrodynamic oil-film thickness of a short journal bearing is defined as that value of the minimum oil-film thickness at which marginal lubrication procedures initially begin to be substituted for full hydrodynamic-film lubrication.
openaire   +1 more source