Specifications

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return spring 6 is compressed to the left.
B. A port is closed owing to the shift of the part 7, and chamber D disconnects
with the port of the return oil tank, and the chamber D connects with the port of pump
in that the port B is closed.
C. Now the valve sleeve 7 shifts to the left, the oil pressure of the pump port and
the chamber D rises in that the C is compressed, in the meantime, the recoil piston 5
is pushed by higher oil pressure in the chamber D .
D. When the max. pedal force acts on the right end of the piston, the bolt and the
pedal bracket can limit the position in order to make the oil pressure in the chamber D
lower the max. adjusting oil pressure.
E. When your foot releases the pedal, the valve sleeve 7 returning to the
original position relies on the opposite force, the process of the brake ends.
(3) Reservoir working performance
When the oil pump stops working (engine flameout) or damage, the reservoir is
on working performance.
A. Press the brake pedal, valve sleeve 7, backswing piston 5, check valve pin 3
will be shifted left, the pin tips the ball over, at the same time, chamber D is connected
with reservoir connector, acts on the brake cylinder with reservoir pressure.
B. Leaves the pedal, valve sleeve, backswing piston and pin moves left, the ball
of check valve is connected with valve seat (check valve closed) acting by spring force,
the pin stops in the corresponding position.
C. Backswing moves right, chamber C opens, the oil of brake cylinder goes back
to the oil tank through chamber D.
4.2.3 Energy reservoir (Fig.4.4)
The energy reservoir can supply energy when the engine stops working or the oil
pump is in trouble. The type of the energy storage is spring type.
The buzzer of the warning switch sounds continuously when the reservoir doesn’t
storage energy.
When pressing the brake pedal, the oil pressure exceeds 3.9MPa, the check
valve opens and oil flows to the energy reservoir. Now the piston shifts to the left, the
warning switch doesn’t ring.
The reservoir storages the maximum energy along with the oil pressure rises
constantly, the oil pressure is 13 MPa, this value is controlled by the safety valve.
The energy reservoir storages the pressure energy, there are safety valve and