To provide a fluid pressure adjusting device having a new structure and mechanism, which can perform precise control without malfunction, and enables stable supply even in a case of insufficient supplying capability or large pressure fluctuation on the supply side.
The electronic fluid pressure adjusting device to be provided between the primary side and the secondary side of a fluid passage to keep the secondary fluid pressure in a predetermined range comprises: a pressure sensor provided on the secondary side or primary side passage to measure the secondary pressure or primary pressure, to transmit a pressure signal measured by the pressure sensor to a control circuit having an arithmetic part; a pressure regulating valve directly-coupled with a solenoid, between the primary side and the secondary side; and the control circuit which controls the solenoid by a control signal obtained by arithmetic operation considering the passage characteristic so as to be suitable to the passage characteristic.
MARUYAMA HIROSHI
NAKAGAWA TAKAHIRO
KYOSEI KK