【作者】

Masaaki Endo

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。Crosshead bearings in two-stroke diesel engines operate under severe lubrication conditions; they are subject to high specific loads and oscillate through a small angle at a low speed. Crosshead bearings have several axial oil grooves on the loaded surface to promote oil film exchange during bearing oscillation. However, because the development of a thick oil film by hydrodynamic action is impaired by these oil grooves, the bearings are prone to seizure and fatigue cracking. The continuing trend towards more powerful, more compact engines increases bearing specific loads and thereby makes crosshead bearing lubrication more difficult. This gives rise to a need for further enhancement of the load-carrying capacity of the crosshead bearings. In externally-pressurized bearings, the lubricating oil is supplied to two hydrostatic oil pockets at high pressure to hydrostatically lift the bearing from the crosshead pin. There is sparse literature about hydrostatic pocket design in crosshead bearings. Therefore, externally-pressurized, hydrostatically-lubricated crosshead bearings were designed and test bearings produced. Theoretical analysis and experimental studies using a dynamically-loaded bearing apparatus were conducted to relate the hydrostatic lift and hydrodynamic characteristics to the bearing design parameters.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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