Anti-shock characteristics of water lubricated bearing for fuel cell vehicle air compressor

This paper presents an investigation of the anti-shock characteristics of water lubricated journal bearing used in the motorized centrifugal air compressor for fuel cell vehicles (FCV). The nonlinear trajectory of the shaft under a half sinusoidal shock load is numerically calculated by simultaneous...

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Published in:Tribology international 2017-03, Vol.107, p.56-64
Main Authors: Ren, Tianming, Feng, Ming
Format: Article
Language:English
Subjects:
Air compressors
Anti-shock characteristics
Centrifugal compressors
Contact pressure
Electric vehicles
Fuel cell compressor
Fuel cell vehicles
Fuel cells
Journal bearings
Lobe pocket bearing
Modulus of elasticity
Reynolds equation
Water lubrication
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Feng, Ming
description This paper presents an investigation of the anti-shock characteristics of water lubricated journal bearing used in the motorized centrifugal air compressor for fuel cell vehicles (FCV). The nonlinear trajectory of the shaft under a half sinusoidal shock load is numerically calculated by simultaneously solving the shaft motion equations and the Reynolds equation. Meanwhile, the pressure-compliance relationship of elastic-plastic roughness contact is also introduced to consider the possible direct contact between the spinning shaft and sleeve during shock. The influences of shock direction, amplitude, time and geometrical parameters on the anti-shock performance of the bearing are analyzed. •The whole pocket upstream of the bearing is relatively weak to shock.•The critical shock amplitude is above 150G under any conditions.•The decreases in pocket widths and lobe depth enhance the anti-shock performance.
doi_str_mv 10.1016/j.triboint.2016.11.016
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subjects Air compressors
Anti-shock characteristics
Centrifugal compressors
Contact pressure
Electric vehicles
Fuel cell compressor
Fuel cell vehicles
Fuel cells
Journal bearings
Lobe pocket bearing
Modulus of elasticity
Reynolds equation
Water lubrication
title Anti-shock characteristics of water lubricated bearing for fuel cell vehicle air compressor
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