| 摘要 |
<p>The distributor, more particularly for power steering systems, includes two cooperating elements defining two parallel fluid flow circuits (10,11 ) each including three serially arranged restrictor means (1,2,3;1',2',3') actuable during relative displacement of said cooperating elements, and, for each circuit, in parallel with second restriction means (2;2') an external restriction means (EV;EV' ) controlled by external control means so as to selectively vary the position of the transition point between the first and second portions of the characteristic curve, assistance pressure delivered by the distributor/reaction on the input control member of the distributor (14).</p> |
