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RISTheoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flooded lubrication of tilting-pad journal bearings provides safe and robust operation for many applications due to a completely filled gap at the leading edge of each pad. Direct lubrication by leading edge grooves (LEG) ...
A Model for Oil Flow and Fluid Temperature Inlet Mixing in Hydrodynamic Journal Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The quality of predictions for the operating behavior of high-speed journal bearings strongly depends on realistic boundary conditions within the inlet region supplying a mixture of hot oil from the upstream pad and fresh ...
Slip Characteristics in Cylindrical Roller Bearings. Part I: Influence of Cage Type on Rolling Set Slip
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The slip behavior of four cage types was studied for an NU215 cylindrical roller bearing under radial forces lower than the minimum recommended by the manufacturer by performing force, speed, and oil flow ramp tests. In ...
An Algorithm for Starved Lubricated Journal Bearings With Optionally Locked Lube Oil Feed Grooves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Starved lubrication occurs intentionally or unconsciously in many journal bearing applications. However, the determination of its concrete distribution in a journal bearing is rather complex as the different lube oil feed ...
Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing Up to Highest Surface Speeds
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tilting-pad journal bearings are widely used in turbomachinery industry due to their positive dynamic properties at high rotor speeds. However, the exact description of this dynamic behavior is still part of current research. ...
Slip Characteristics in Cylindrical Roller Bearings—Part II: Influence of Cage Type on Rolling Element Slip
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The rolling element slip of an NU215 cylindrical roller bearing fitted with four cage types was studied under various operating conditions. In comparison, a specially designed full complement bearing with the same principal ...
Slip Characteristics in Cylindrical Roller Bearings—Part III: Influence of Bearing Clearance on the Roller and Set Slip
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The set and roller slip of an NU215 cylindrical roller bearing with medium clearance (MC) and tight clearance (TC) classes have been tested and compared to those of extensive clearance (EC) presented in Parts I and II of ...
The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The frequency-dependent dynamic coefficients of tilting-pad bearings are significantly influenced by the pad pivot elasticity. In addition to the elasticity of the pivot, there is also the flexibility of the structure that ...
Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: While turbocharging is a key technology for improving the performance and efficiency of internal combustion engines, the operating behavior of the turbocharger is highly dependent on the rotor temperature distribution as ...