To obtain a hydraulic device which allows a flow rate discharged from a hydraulic pump to be substantially constant regardless of a difference in temperature of a working fluid stored in a tank.
The hydraulic device is provided with a tank 10 which stores the working fluid, the hydraulic pump 1 which sucks the working fluid in the tank 10 and then discharges it, an electric motor 6 which rotatably drives the hydraulic pump 1, a control circuit 50 which controls the number of rotations of the electric motor 6 and the first temperature sensor 14 which detects the temperature of the working fluid stored in the tank 10. As the temperature of the working fluid detected by the temperature sensor 14 lowers, the control circuit 50 exerts control to increase the number of rotations of the electric motor 6. Furthermore, the hydraulic device includes the second temperature sensor 16 which detects the temperature of the hydraulic pump 1 and the control circuit 50 stops the rotation of the electric motor 6 when the temperature detected by the second temperature sensor 16 reaches or exceeds the setting temperature.
UCHIDA SHOTA
YAMADA TOSHIHIRO
NAKAYASU MASANORI
SAKAI KOICHI
TOYOTA MOTOR CORP
JTEKT CORP
| JP2008189106A | 2008-08-21 | |||
| JP2002039116A | 2002-02-06 | |||
| JPH03138282A | 1991-06-12 | |||
| JP2001107873A | 2001-04-17 | |||
| JPH06323303A | 1994-11-25 | |||
| JP2008189106A | 2008-08-21 | |||
| JP2002039116A | 2002-02-06 | |||
| JP2010180731A | 2010-08-19 | |||
| JP2002206630A | 2002-07-26 |