Abstract
A crosshead-pin bearing with axial oil grooves in a two-stroke cycle marine diesel engine is inferior in the load-carrying capacity, since the load acting on the bearing is always unidirectional and the sliding speed is low besides oscillatory motion. Two possible methods for improving the load-carrying capacity have been proposed. One is an offset bearing system that both the journal and the bearing are axially divided into two segments with offset centerlines. The other is a bearing system combined with a circular journal and an elliptical bearing.
The theoretical analyses are conducted for the comparison of load-carrying capacity among three type of the crosshead- pin bearing, a conventional type employed widely, an offest type and an elliptical type. Furthermore, the influences of the bearing oscillation angle on the load- carrying capacity are examined theoretically and experimentally.
