APPARATUS COMPRISING A HYDRAULIC CIRCUIT

A prime mover (22) and a plurality of hydraulic actuators (6), a hydraulic machine (32) having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers, a hydraulic circuit extending between a group of one or more working chambers of the hydraulic ma...

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Bibliographische Detailangaben
1. Verfasser:	CALDWELL, Niall James
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING CONTROLLING COMBUSTION ENGINES DREDGING FIXED CONSTRUCTIONS FOUNDATIONS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS HYDRAULIC ENGINEERING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS PRODUCING MECHANICAL POWER PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REGULATING SOIL SHIFTING WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A prime mover (22) and a plurality of hydraulic actuators (6), a hydraulic machine (32) having a rotatable shaft in driven engagement with the prime mover and comprising a plurality of working chambers, a hydraulic circuit extending between a group of one or more working chambers of the hydraulic machine and one or more of the hydraulic actuators, each working chamber of the hydraulic machine comprising a low-pressure valve (52) which regulates the flow of hydraulic fluid between the working chamber and a low-pressure manifold and a high-pressure valve (64) which regulates the flow of hydraulic fluid between the working chamber and a high-pressure manifold. The hydraulic machine being configured to actively control at least the low-pressure valves of the group of one or more working chambers to select the net displacement of hydraulic fluid by each working chamber on each cycle of working chamber volume, and thereby the net displacement of hydraulic fluid by the group of one or more working chambers, responsive to a demand signal, wherein the apparatus further comprises a controller (26) configured to calculate the demand signal in response to a measured property of the hydraulic circuit or one or more actuators.