Effect of operating conditions and bearing clearance on lubrication parameters of main bearing
To investigate the influence of different factors on the lubrication status of the crankshaft and main bearing.A multi-body dynamics model is established to study the change trend of main bearing load,minimum oil film thickness,peak oil film pressure and center trajectory of bearing under different engine speed,oil temperature and main bearing clearance.The results show that the main bearing load and peak oil film pressure both increase with the increasing of engine speed and main bearing clearance,and decrease with the increasing of oil temperature.The minimum oil film thickness increases with the oil temperature and main bearing clearance.The change trend of minimum oil film thickness is not clear with the increasing of engine speed.With the increasing main bearing clearance,center trajectory of bearing is increased,which can reduce the reliability of the engine.
multi-body dynamics analysiscrankshaft and main bearinglubrication parameternumerical analysis
NETL
NSTL
万方数据
