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Analysis of Two Sliding Contacts Inside a Radial Piston Hydraulic Motor
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
2002 (English)In: Proceedings at 5th JFPS International Symposium on Fluid Power, Nov. 12-15, 2002, Nara, Japan, 2002Conference paper, (Other scientific)
Abstract [en]

This paper presents an investigation of the torque losses in a hydraulic motor of radial piston type commonly used in industrial hydrostatic transmissions. When the speed of the hydraulic motor is decreased an increase of the torque loss can be measured. In order to investigate the reason for this increase a combination of experimental and theoretical studies is performed with special focus on two sliding contacts-the distributor valve and the piston-cam roller contact. The theoretical analysis of the contacts reveals that the distributor valve contribute more to torque and power losses compared to the piston-cam roller contacts and largely to the external leakage of the motor. At low speeds the piston-cam roller contact will enter the mixed lubrication regime.

Place, publisher, year, edition, pages
2002.
Keyword [en]
Hydraulic motor, Radial piston, Torque loss, Simulation
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-2121Local ID: 1174OAI: oai:DiVA.org:miun-2121DiVA: diva2:27153
Available from: 2008-09-30 Created: 2008-09-30Bibliographically approved

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