| 主权项 |
1. A hydraulic machine, comprising:
a housing; a power shaft, including an eccentric cam, configured to rotate about a common longitudinal axis; a plurality of working pistons positioned in respective cylinders, wherein the cylinders are oriented in a radial arrangement each being substantially perpendicular to the axis, and wherein each piston has a connecting rod and wherein each connecting rod has a bearing surface for slidably bearing upon a bearing surface of the eccentric cam; a high-speed control valve for each cylinder, configured to switchably connect the respective cylinder with a high pressure fluid source and a low pressure fluid source; a high pressure fluid line connecting each high-speed control valve with the high pressure fluid source; a low pressure fluid line connecting each high-speed control valve with the low pressure fluid source; a shut off valve for isolating the high pressure fluid line from the high pressure fluid source; and a pressure relieving valve on the high pressure fluid line for depressurizing fluid in the high pressure fluid line to facilitate disengagement of the connecting rod from the bearing surface. |
