Patent ID: 11970959
Assignee: JIANGSU JOINTEK PRECISION MACHINERY CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The valve actuator for a specialized stationary two-piston hydraulic engine according to claim 10, wherein the control valve includes a valve body, an elastic return element, and a one-way mechanism, the valve body being provided with a primary oil line, a secondary oil line, and a connecting line, the valve body being slidably mounted in a valve hole, the primary oil line being connected to the secondary oil line through the connecting line, the one-way mechanism being provided in the connecting line for permitting unidirectional entry of oil in the primary oil line into the secondary oil line, the elastic return element being used for driving the valve body to reset;
an oil drain line is provided in the valve actuator or the rocker arm shaft, the control oil supply line being connected to an end of the valve hole;
when pressure on the valve body of oil passed into the valve hole by the control oil supply line is greater than an elastic force of the elastic return element, the valve body is in an open position, the drive oil supply line is connected to the primary oil line, the secondary oil line is connected to the oil drive line, and the oil drive line is not connected to the oil drain line; and
when the pressure on the valve body of oil passed into the valve hole by the control oil supply line is less than the elastic force of the elastic return element, the elastic return element drives the valve body to move to a closed position, and the oil drive line is connected to the oil drain line.