Title:
HYDRAULIC CONTROL DEVICE FOR DRIVE POWER DISTRIBUTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/133083
Kind Code:
A1
Abstract:
Provided is a device that performs precise control in a low torque region while utilizing the advantages of a hydraulic seal-type hydraulic control device. This hydraulic control device for a drive power distribution device has a first characteristic (sealing pressurization) obtained by closing an opening/closing valve (43) and driving an oil pump (35), a second characteristic (sealing decompression) obtained by prohibiting driving of the oil pump (35) and opening the opening/closing valve (43), and a third characteristic (flow rate control) obtained by releasing the opening/closing valve (43) and driving the oil pump (35). When supplying hydraulic pressure to a piston chamber (15) in a predetermined low torque region, control is performed on the basis of the third characteristic so that the piston chamber (15) reaches a command hydraulic pressure. When pressurizing the piston chamber (15) in a torque region that is higher than the low torque region, control is performed on the basis of the first characteristic so that the piston chamber (15) reaches the command hydraulic pressure. When subsequently decompressing the piston chamber (15), control is performed on the basis of the second characteristic so that the piston chamber (15) reaches the command hydraulic pressure. In addition, control is performed so that the driving of a motor (37) is suppressed directly prior to a transition from the third characteristic to the first characteristic.
Inventors:
YOSHIDA YUMA (JP)
Application Number:
PCT/JP2016/054430
Publication Date:
August 25, 2016
Filing Date:
February 16, 2016
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
B60K17/348; F16D48/02
Foreign References:
| JP2013067326A | 2013-04-18 | |||
| JPH07186765A | 1995-07-25 | |||
| JP2013154827A | 2013-08-15 | |||
| JPH0268225A | 1990-03-07 |
Attorney, Agent or Firm:
KAIZUKA, Ryohei et al. (JP)
Ryohei Kaizuka (JP)
Ryohei Kaizuka (JP)
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