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Lubrication Characteristics on Sliding Surfaces in a Piston Pump and Motor During Running-In Tests Pages: 13 Published: Jan 2001
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View License Agreement Source: STP1339-EB Abstract Lubrication characteristics on the sliding surfaces between piston and cylinder in a piston pump and motor with running-in have been investigated. The friction characteristics on the sliding surfaces of the friction test machine have been examined with the use of pin-on-V-block before running-in tests. The running-in tests with model apparatus of the piston pump and motor have been carried out under the mixed lubrication condition in the Stribeck curve. The running-in condition was chosen after considering parameters such as friction force, separation voltage and roughness. In these parameters, friction force and separation voltage have played an important role for the evaluation of effective running-in. It is clarified that the rate of running-in of the cylinder is lower than that of the piston. The effects of the piston top profile and stiffness of the piston on the lubrication characteristics have been studied.
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