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Investigations for Enhanced Tribological Performance of a Hydraulic Motor PDF

152 Pages·2011·13.0575 MB·other
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by Daniel Nilsson| 2011| 152 pages| 13.0575| other

About Investigations for Enhanced Tribological Performance of a Hydraulic Motor

Abstract A radial piston hydraulic motor has several components that encounter sliding or rolling motion under lubricated conditions. When a hydrostatic, hydrodynamic or elastohydrodynamic oil film separates the interacting surfaces, the wear and friction are low provided of course the hydraulic fluid is free from the presence of contaminants. Mixed lubrication may occur even at relatively high speed when using low viscosity fluids and may result in increased friction which adversely affects the operating efficiency of the hydraulic motor. Additionally, the increased heat accumulation at different interfaces of the motor under extreme operating conditions involving high pressures, high speeds and low viscosities can also lead to unstoppable thermal process resulting in seizure. At low speeds, different tribological pairs operate in boundary lubrication regime and are prone to wear. The associated high friction can also result in low starting efficiency. The research work reported here has thus focussed on addressing the above mentioned questions so as to improve understanding of the tribological phenomena and find ways for improving and alleviating hydraulic motor tribological components. The results have shown that it is possible to reduce both the boundary friction and the lift-off speed through proper choice of surface modification methods and their application on motor components.

Detailed Information

Author:Daniel Nilsson
Publication Year:2011
ISBN:9174393111
Pages:152
Language:other
File Size:13.0575
Format:PDF
Price:FREE
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