Duplicated hydraulic circuit with pressure regulation
AssigneeAirbus Helicopters
InventorsPascal LEGUAY, Jean-Yves AGRESTA, Arnaud GROLL
Life of this patent
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Abstract
The present invention relates to A device for supplying hydraulic power, the device comprising two hydraulic circuits jointly feeding multi-cylinder hydraulic power transmission means in which each cylinder is connected to a single one of the hydraulic circuits independently of the others. Each hydraulic circuit includes a hydraulic pressure and flow rate generator and a pressure control module controlling said hydraulic pressure and flow rate generator so as to regulate the pressure of said fluid flowing in said hydraulic circuit as a function of said pressure of said fluid flowing in each hydraulic circuit and possibly as a function of one or more parameters external to said device.
Claims16
A hydraulic circuit for feeding at least one hydraulic receiver, the hydraulic circuit comprising:
- a fluid;
- a hydraulic pressure and flow rate generator for generating hydraulic pressure and flow rate in the fluid;
- pipes for connecting the hydraulic pressure and flow rate generator with the hydraulic receiver;
- and
- a pressure control module controlling the hydraulic pressure and flow rate generator to regulate the pressure of the fluid flowing in the hydraulic circuit as a function of the pressure of the fluid flowing in the hydraulic circuit and of one or more parameters external to the hydraulic circuit so that a pressure of the fluid flowing in the hydraulic circuit is equal to a setpoint pressure;
- wherein the pressure control module comprises a first actuator that is hydraulic and controlled at least in part as a function of the pressure of the fluid flowing in the hydraulic circuit, at least one second actuator that is controlled by one or more parameters external to the hydraulic circuit, and calibration means.
Dependencies are inferred from the claim text.