Abstract
The hydrostatic steering unit is composed of pumps, motors, manifold assembly, servo actuators and various valves. It is a key device for steering of tank according to the request of driver. Especially, lubrication between the piston shoe and the swash plate greatly affects the performance and durability of the product. Proper lubrication between the rotating part and the fixed part plays an important role in reducing the frictional force, but excessive leakage reduces the volumetric efficiency of the hydrostatic steering unit. In this study, the lubrication characteristics according to the variation of lubrication gap between the piston shoe and the swash plate of the hydrostatic steering were analyzed using Ansys CFX. The results of the present study can be useful information for a hydrostatic steering unit.
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