斜板式アキシアルピストンモータの起動・微速時における弁板摺動部の摩擦・漏れ特性

抄録

Improvement of the efficiency of hydraulic motors is very important issue, especially in the starting and low-speed range, for finer hydraulic operation. From this point of view, this report aimed to provide technical data to help improve the swashplate-type axial piston motor performance, particularly in terms of friction, leakage characteristics and oil film thickness between the valve plate and cylinder. The effects on these characteristics are examined with regard to supply pressure, rotational speed, and static force balance. The following results were obtained: (1) friction torque between the valve plate and cylinder is almost never affected by rotational speed or piston phase angle, but strongly depends on supply pressure and static force balance; (2) leakage flow rate is affected by supply pressure, rotational speed and static force balance.