Control device for a hydraulic piston machine with a variable flow rate

A control device for a hydraulic piston machine, having a variable flow rate averaged over time, having a plurality of pistons (12) that each define a working chamber (13) whose volume changes with the stroke of a piston (12) and that is connectable to a high-pressure line (16) via a first valve (17, 45) and to a low-pressure line (18) via a second valve (19, 35), with at least one of the two valves of a working chamber being actively actuatable in an electric fashion, and having an electronic control unit (25) that is able to operate the actively actuatable valves (19, 35, 45) of the working chambers (13) in an idle stroke mode in which the piston stroke is not used and a partial stroke mode in which only a portion of the piston stroke is used,

• wherein the actively actuatable valves (19, 35, 45) are operable only in the partial stroke mode and in the idle stroke mode.

A control device for a hydraulic piston machine, having a variable flow rate averaged over time, having a plurality of pistons (12) that each define a working chamber (13) whose volume changes with the stroke of a piston (12) and that is connectable to a high-pressure line (16) via a first valve (17, 45) and to a low-pressure line (18) via a second valve (19, 35), with at least one of the two valves of a working chamber being actively actuatable in an electric fashion, and having an electronic control unit (25) that is able to operate the actively actuatable valves (19, 35, 45) of the working chambers (13) in a partial stroke mode in which only a portion of the piston stroke is used and a full stroke mode in which the full piston stroke is used,

• wherein the actively actuatable valves (19, 35, 45) are operable only in the partial stroke mode and in the full stroke mode.

A control device for a hydraulic piston machine, having a variable flow rate averaged over time, having a plurality of pistons (12) that each define a working chamber (13) whose volume changes with the stroke of a piston (12) and that is connectable to a high-pressure line (16) via a first valve (17, 45) and to a low-pressure line (18) via a second valve (19, 35), with at least one of the two valves of a working chamber being actively actuatable in an electric fashion, and having an electronic control unit (25) that is able to operate the actively actuatable valves (19, 35, 45) of the working chambers (13) in an idle stroke mode in which the piston stroke is not used, a partial stroke mode in which only a portion of the piston stroke is used, and a full stroke mode in which the full piston stroke is used,

• wherein all three modes are used on only a limited number of working chambers (13) and only the idle stroke mode and the full stroke mode are used on the remaining working chambers.