| 摘要 |
The invention concerns a radial piston hydraulic engine (10), which includ es 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 ...) controlle d 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 valv e (70a1, 70a2 ...), which is used to make some pistons (16a1, 16a2 ...) inoperative. Shaft (14) includes in the same cylinder block (I) at least two control pressure channels (Y1, Y2) for the shut-off valves (70a1, 70a2) of i ts cylinder body (15), whereby by supplying pressure selectively into a channel (Y1 or Y2; Y1 and Y2) it is possible to make certain cylinders (P1, P2 ...) inoperative by directing control pressure to the shut-off valves (70a1, 70a2, 70a3 ...).
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