| 摘要 |
<p>PURPOSE:To improve the extent of displacement controllability, by installing an eccentric mass part at the side of a counter-drive lug part to an axis of a swash plate, and varying moment around a fulcrum by rotation of this swash plate to the moment made by a piston. CONSTITUTION:A fulcrum pin 16 is shiftably attached to a swash plate lug part 121 in a cam groove 142 of a drive plate 14. Moment around a fulcrum 16 by rotation of a swash plate 12 is set to the moment made by reprocation of a piston 31 so as to make it larger when a stroke is small but smaller when it is large, respectively. Therefore, when the stroke is small, necessary control differential pressure is decreased according to revolution, thus displacement control is speedily performable to the revolution.</p> |
