1 is following: CV compression valve, Dr rod diameter, d valve diameter, D valve orifice diameter, b valve orifice length, Qv valve flowrate, x valve displacement
The analysed valve is a compression valve that by his geometrie allows the regulation of pressure inner the compression chamber and, implicit, from this, the regulation of the compression damping force (Pernevan, et.
When the piston rod enters into cylinder the piston comprimes the oil from the compression chamber and the oil is forced to flow through the compression valve CV to the compensate chamber and by the piston orifices to the downside of the piston.
By realizing an appropriate geometrie of the compression valve the damping force may be reglated to impose values.
In order to realize an mathematical model for the compression valve was imposed an predefined damping characteristic Fd(vp) (see Tab.
The flow rate that passes through the compression valve eguals the flowrate due the piston moving when the piston rod enters inner cylinder.