work of shock absorbers
Absorber consists of a reservoir 7 (Figure 154), working
cylinder 35, inside which the rod 14 and piston 15 is located
38 with the bypass valve and rebound. The piston is provided with
Wrapped piston ring 11 of Teflon.
The working cylinder at the bottom of the valve is compressed, combined
the general assembly with the inlet valve in the housing 2. In the upper part
Cylinder 16 is provided with a guide rod with a rubber O-
ring seals 33 and block 22, 30, 31 and stem 18 seals the tank
with a clamp 20. Shock absorber fluid-filled
(See Appendix. 2).
The connection of all parts is a nut 28 tank.
The work of the shock absorber is the suspension and vibration absorption
carried out due to internal resistance that occurs when
overflow of fluid through the valve system between different
cavities: the cavity of the slave cylinder located above the piston;
cavity of the working cylinder below the piston;
Both cavities are filled with the working cylinder shock absorber fluid,
and the cavity of the tank - in part, in its upper part there is air.
Air into the working cylinder leads to disruption of
shock, so at the upper end of the working cylinder are
small risks, intended for release into the reservoir
air bubbles entering the working cylinder.
During the vibration of car suspension is as follows.
When the compression rod and the piston moves down in the working cylinder.
In this case the liquid is displaced from the slave cylinder rod with
slow speed of his movements, flows through the holes in
compression valve body 2 and through the grooves of the throttle valve disc 42
compression in the tank. Simultaneously, the liquid flows from the bottom
cavity of the working cylinder in the upper cavity of the piston through the holes,
pressing plate 12 valve.
The main resistance in compression developed due to overflow
fluid through the valve compression.
When the impact occurs during the "stretching" the shock absorber and piston inside
the working cylinder is moved up. The liquid located above the piston,
flows at low piston speed through the holes in
piston grooves and throttling valve disc 10 returns. At the same time due to
output shaft of the working cylinder, the latter creates a vacuum,
lifting the plates causes the intake valve 3 and the overflow
fluid from the reservoir into the cylinder through the holes in the valve body.
Increasing the speed of oscillation suspension leads to an increase in resistance
shock, and when you reach a certain speed valves are opened
the impact of compression. The liquid flows not only through the throttle
holes, but through the gaps formed between the valve disc impact
and the piston, compressing the spring 8 in the course of the recoil, as well as through
the gaps between the
Disk compression valve and its casing, compressing the spring 46 in the compression.
In the course of the recoil always remain closed bypass valve and the valve
compression and closed during the compression stroke the intake valve and the valve output.