Abstract: The invention concerns a radial piston hydraulic engine (10), which includes a rotated box section (11), with which box section (11) a cam ring (12) is connected. The radial piston hydraulic engine (10) includes a fixed non-rotary shaft (14), with which a cylinder body (15) in a fixed position is connected. The radial piston hydraulic engine includes a distributor (13), which is connected with the box section (11) and rotates together with it, whereby through channels located in the distributor a pressurised medium is conducted to pistons (16a1, 16a2 . . . ) of cylinders (P1, P2 . . . ) controlled by the distributing valve, that is, by distributor (13), and that at least some cylinders (P1, P2 . . . ) include in connection with themselves a shut-off valve (70a1, 70a2 . . . ), which is used to make some pistons (16a1, 16a2 . . . ) inoperative.

Abstract: The invention concerns a radial piston hydraulic engine (10), which includes a rotated box section (11), with which box section (11) a cam ring (12) is connected. The radial piston hydraulic engine (10) includes a fixed non-rotary shaft (14), with which a cylinder body (15) in a fixed position is connected. The radial piston hydraulic engine includes a distributor (13), which is connected with the box section (11) and rotates together with it, whereby through channels located in the distributor a pressurized medium is conducted to pistons (16a1, 16a2 . . . ) of cylinders (P1, P2 . . . ) controlled by the distributing valve, that is, by distributor (13), and that at least some cylinders (P1, P2 . . . ) include in connection with themselves a shut-off valve (70a1, 70a2 . . . ) which is used to make some pistons (16a1, 16a2 . . . ) inoperative.