Importance

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Abstract

A hydraulic machine having a variable intake volume/pump capacity includes working spaces (8) disposed in a cylinder (2), each of the working spaces (8) being limited by a piston (6) and a cylinder bore (4) in which the piston (6) is accommodated. The pistons (6) are supported on a reciprocating element (14) that rotates relative to the pistons (6), and therefore when the cylinder (2) rotates relative to the pistons (6), the pistons (6) undergo a displacement that determines the volume of the working spaces (8) which can be connected to high pressure and low pressure, to a control unit for actuating the valves (16, 22) as a function of the displacement of the particular piston (6), and to an angle-of-rotation sensor (36). The angle-of-rotation sensor (36) has a Gray code track (60) and an incremental track (58), to each of which at least one sensor (72, 74) is assigned.

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First Claim