Vorrichtung zur Verwendung in einer Servolenkung

A power steering system includes a bypass valve assembly (34) which bypasses fluid from a main conduit (30) connected with a power steering pump (26) and motor (12). The bypass valve assembly is urged toward an open condition, bypassing fluid from the main conduit (30), with a force which varies as...

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Bibliographische Detailangaben
Hauptverfasser:	RAU, JIM L., LAFAYETTE INDIANA 47905, US, MILLER, LAURENCE L., WEST LAFAYETTE INDIANA 47905, US
Format:	Patent
Sprache:	ger
Schlagworte:	BLASTING HEATING LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MECHANICAL ENGINEERING MOTOR VEHICLES PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS TRAILERS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A power steering system includes a bypass valve assembly (34) which bypasses fluid from a main conduit (30) connected with a power steering pump (26) and motor (12). The bypass valve assembly is urged toward an open condition, bypassing fluid from the main conduit (30), with a force which varies as a function of the fluid pressure drop across an orifice (38) in the main conduit. The bypass valve assembly is urged toward a closed condition by a spring (52). In addition a pressure responsive pilot valve assembly (60) opens to communicate the fluid pressure in the main conduit to the bypass valve to urge the bypass valve assembly toward the closed condition. This decreases the rate at which fluid from the power steering pump is bypassed to thereby increase the amount of fluid available for actuation of the power steering motor.