A steady model of flow and heat transfer in vehicle gearing lubrication system has been developed. And a lubricant flow model of vehicle gearing was established by using one-dimensional incompressible flow equations. The heat transfer mechanisms within the lubricating oil circuit were studied

and the heat transfer simulation model was developed with heat network method. An exemplary simulation has been carried out for the lubrication system of a tracked armored vehicle gearing

pressures

flow rates and temperatures in lubricating system were calculated

and the simulation results were compared to test data with good agreement. This study shows that the simulation model can be used as a theoretical analysis means for studying lubricating oil flow performance of vehicle gearings

as well as providing an useful tool.