Performance and characterization of dynamically-loaded engine bearings with provision for misalignment

The influence of misalignment on a dynamically-loaded engine bearing is investigated using a mass-conserving cavitation algorithm. Whereas in statically loaded bearings misalignment can be conveniently characterized using two parameters known as the degree of misalignment DM and the misalignment angle α, an alternative approach is needed when the load changes direction. In this paper, the complication is treated by representing the severity of misalignment using two deflection angles θx and θy since these deflection angles remain constant in an engine bearing during operation. Effects of the variation of load, rotating speed, oil viscosity, supply pressure, journal mass and deflection angles are presented.