| 摘要 |
<p>A power steering gear for controlling the dirigible wheels of an automotive vehicle comprising steering gear elements and a fluid motor adapted to drive the steering gear elements to supplement the manual steering effort comprising a rotary valve assembly for controlling distribution of steering pressure from a pressure source to the fluid motor including a sleeve element and a spool element, each valve element having cooperating lands for controlling distribution of pressurized fluid therethrough to effect a pressure buildup in a pressure supply port that communicates with a working chamber of the fluid motor and chamfered surfaces on the valve lands of the internal valve element whereby pressure drop in the pressurized fluid circulated through the valve system and fluid noise is reduced and response of the valve system to steering maneuvers is improved.</p> |
