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Bump Type Foil Bearings and Flexure Pivot Tilting Pad Bearings for Oil Free Automotive Turbochargers: Highlights in Rotordynamic Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Oilfree turbochargers (TCs) require gas bearings in compact units of enhanced rotordynamic stability, mechanical efficiency, and improved reliability with reduced maintenance costs compared with oillubricated bearings. ...
Oil-Free Automotive Turbochargers: Drag Friction and On-Engine Performance Comparisons to Oil-Lubricated Commercial Turbochargers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Oil-free bearings for automotive turbochargers (TCs) offer unique advantages eliminating oil-related catastrophic TC failures (oil coking, severe bearing wear/seizure, and significant oil leakage, for example), while ...
Dynamic Response of a Rotor Supported on Hybrid Bearings in Air, Water, and Liquid Nitrogen: Measurements and Comparisons to Predictions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern liquid rocket engine turbopumps implement hybrid bearings, which combine hydrostatic and hydrodynamic fluid film principles, in compact and lightweight units known for their superior reusability, durability, and ...
On the Failure of a Gas Foil Bearing: High Temperature Operation Without Cooling Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Implementing gas foil bearings (GFBs) in micro gas turbine engines is a proven approach to improve system efficiency and reliability. Adequate thermal management for operation at high temperatures, such as in a gas turbine ...
Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hydrostatic thrust bearings (HTBs) are required in various turbomachinery systems due to their substantial load capacity and superior rotor axial positioning capabilities, which minimize friction and heat generation. ...
Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern turbomachinery demands simplified components and compact shaft support systems. This study introduces novel hydrostatic journal bearings incorporating multiple tilting pads and fluid feeding features, which are ...
Prediction of Gas Thrust Foil Bearing Performance for Oil Free Automotive Turbochargers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Green technologies are a mandate in a world concerned with saving resources and protecting the environment. Oilfree turbocharger (TC) systems for passenger and commercial vehicles dispense with the lubricant in the internal ...
On the Pneumatic Hammer of Hybrid Gas Bearings: Measurements and Predictions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hybrid bearings integrating an external pressurizing source are widely used in highspeed turbomachinery due to their notable advantages, including low friction and wear, enhanced reliability and durability, and accurate ...
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