The Effects of Different Oil Supply Pressure on Journal Bearing Performance

In this study, the performance of the connecting rod bearing of the one cylinder 4-stroke diesel Ricardo Hydra Engine was investigated at different oil supply pressure (3 bar, 5 bar, 7 bar) by examining the performance of the selected connecting rod bearing as an example; radial journal bearing users and bearing designers. Width the change of the oil supply pressure  at the dynamically loaded connecting rod bearing; how the minimum bearing clearance, the maximum oil film pressure, the friction torque, the shaft orbit in connecting rod bearing and the hydrodynamic power losses that occur in the journal bearing have been theoretically investigated. Using the Ricardo ORBIT V1.2 software analysis were performed using the Finite Volume Method which provides a fast and accurate solution commonly used in the literature. At the different connecting rod bearing width; how it affected the performance of the journal bearing under dynamic load was carefully examined. From the results of the research; increased oil supply pressure; It has been determined that the bearing clearance, the maximum oil film pressure is increased, the friction torque and hydrodynamic power losses increase. The orbit drawn by the shaft orbit in connecting rod bearing is stable. The results of this research showed that the different oil supply pressure plays an important role in minimum bearing clearance, the maximum oil film pressure, the friction torque, the shaft orbit in connecting rod bearing and the hydrodynamic power losses under the dynamic load.