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5. CUT-OFF VALVE
1)
STRUCTURE
PS1
A3
T1
B
PS
4
1
Manifold
2
Solenoid valve
3
Coil
4
Check valve
2)
OPERATION
When the pump works, the oil under the pressure flows into P port.
The oil in P port is stored in the accumulator on A3 port.
As the pressure on P line rises to 150bar, the cut off valve(1) starts cut-offing and the oil in the P
port is unloaded. The pressure on P line goes down 120bar by the minute leakage from valve and
other factors.
At this pressure, the cut-off valve starts cuting.
This process is repeated in the regular period of 30~40 seconds.
4
6
7
3
2
T2
5
5
6
7
4-16
7
6
1
A3
PS
B
B1
PS1
A4
PP
Hydraulic circuit
Check valve
Cut-off valve
Relief valve
T
PP
P
B1
T2
T1
P
T
110D7EBS35
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