Dynamic Behavior of Oil Film between Piston Ring and Cylinder Liner : Visualization of Oil Film Rupture and Measurement of Oil Film Pressure Using Simulating Rig
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概要
- 論文の詳細を見る
In order to clarify the behavior of oil film between a piston ring and cylinder liner, pressure measurement and visualization of oil film are carried out simultaneously using a simulation rig. In this rig, the piston ring is simulated by a straight glass bar test piece and the cylinder by a reciprocating flat plate. The following observations were obtained. The oil film pressure of the full film region before oil film rupture is negative and the maximum magnitude of negative pressure, i.e., tension, reaches to 0. 35 MPa. Cavities are formed at 20°-30° crank angle from dead center in the full film region, and grow with the increase of the crank angle. Then a new series of cavities is formed at the rear edge of the test piece. The two series of cavities then coalesce and the flow becomes perturbed momentarily. Negative pressure is detected at a 20°-30° crank angle after dead center and is not released until this coalescence of cavities has occurred.
- 一般社団法人日本機械学会の論文
- 1995-12-15
著者
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Azetsu Akihiko
Department Of Mechanical Engineering The University Of Tokyo
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YAMAUCHI Masashi
Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry
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Someya Tsuneo
Musashi Institute Of Technology
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Kim Seungchul
Department of Mechanical Engineering, The University of Tokyo
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Kim Seungchul
Department Of Mechanical Engineering The University Of Tokyo
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Yamauchi Masashi
Department Of Mechanical Engineering The University Of Tokyo
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Azetsu Akihiko
Department Of Mechanical Engineering School Of Engineering Tokai University
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