Pressure in a Oil Damper
Pressure in a Oil Damper
(OP)
If I have a double rod-end cylinder, fill it with oil, and connect both ends together via a needle valve, then start applying force to the rod in order to push/pull the pistion, is there any pressure difference acorss the valve when the needle valve is fully open? If so how can I calculate it? Is the pressure independent from the applied force?
Thanks
Thanks





RE: Pressure in a Oil Damper
RE: Pressure in a Oil Damper
Relate flow rate to piston speed.
Relate piston force to pressure.
Then you will know the relation of piston force to piston speed for various valve openings.
Ted
RE: Pressure in a Oil Damper
OK there is pressure drop due to the valve structure, fittings, hose/line.
The problem is I want to choose a right valve for my system, and I do not know about my valve yet.
Let me ask my question this way: in an ideal (unrealistic)situation If there is no head loss across the valve due to the friction etc, is there any pressure difference between two ends of the cylinder when I am moving the piston?
Please note that there is no pump in the circuit and the system is totally passive (driving force is applied to the rod)
RE: Pressure in a Oil Damper
Ted
RE: Pressure in a Oil Damper
Ted