Initial sliding wear on piston rings in a radial piston hydraulic motor

The initial sliding wear of boundary lubricated piston rings used in a hydraulic motor is studied in terms of the changes in mass, form and surface roughness. The piston ring in a hydraulic motor makes an important contribution to high volumetric efficiency by properly sealing the cylinder bore and...

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Bibliographic Details
Published in:Wear 2003-10, Vol.254 (11), p.1208-1215
Main Authors: Sjödin, U.I., Olofsson, U.L.-O.
Format: Article
Language:English
Subjects:
Applied sciences
Boundary lubrication
Construction engineering
Engineering mechanics
Engines and turbines
Exact sciences and technology
Friction, wear, lubrication
Internal combustion engines: gazoline engine, diesel engines, etc
Konstruktionsteknik
Machine components
Maskinteknik
Mechanical engineering
Mechanical engineering. Machine design
Other technology
Piston ring
Running-in
Surface roughness
TECHNOLOGY
TEKNIKVETENSKAP
Teknisk mekanik
Wear
Övriga teknikvetenskaper
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Summary:The initial sliding wear of boundary lubricated piston rings used in a hydraulic motor is studied in terms of the changes in mass, form and surface roughness. The piston ring in a hydraulic motor makes an important contribution to high volumetric efficiency by properly sealing the cylinder bore and piston. The results show that the wear on the piston ring in this particular test rig takes place at the top of the asymmetric crowning at the outer surface contacting the cylinder bore. Initially, the roughness amplitude decreased rapidly, and had decreased by one-third after sliding 10 m. The dominant wear mechanism was mild wear. Abrasive wear also clearly influences the amount of wear.
ISSN:0043-1648
1873-2577
1873-2577
DOI:10.1016/S0043-1648(03)00337-5