Pressure control structure of prefill valve
A technology of pressure control and liquid filling valve, which is applied in the field of hydraulic pressure, can solve the problems of difficult control of the liquid filling interval, achieve the effects of reducing machining accuracy, improving control accuracy, and ensuring flow stability
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[0025] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0026] Such as Figure 1-Figure 5 As shown, the pressure control structure of this filling valve includes a valve body 1 with a filling oil passage 11 and a feedback oil passage 15, the feedback oil passage 15 communicates with the filling oil passage 11, and the filling oil passage 11 has an inflow of oil The oil inlet, the liquid filling port from which the oil supply flows out to the accumulator, the oil outlet 12 from which the oil supply flows back to the fuel tank, and the oil return port for the oil supply to return to the fuel tank, wherein the oil inlet, the filling The liquid port and the oil return port are the necessary openings of the existing liquid filling valve. Since they are not in the same section as the...
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