Title:
HYDRAULIC CONTROL DEVICE FOR VEHICLE POWER TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/104857
Kind Code:
A1
Abstract:
Disclosed is a hydraulic control device for a vehicle power transmission device, said hydraulic control device enabling as prompt a vehicle start as possible without the slippage of a second hydraulic frictional engagement device, and exhibiting no slippage of the second hydraulic frictional engagement device even when the battery is low. A sequence control valve (130), which is provided between a forward clutch (C1) and an output-side hydraulic cylinder (46c) of an output-side adjustable pulley (46), and between a secondary modulator valve (128) and a clamping force control valve (110), and which controls the relationship between a belt clamping pressure (Pb) and a clutch engagement pressure (Pc) so that the torque capacity of the output-side hydraulic cylinder (46c) of the output-side adjustable pulley (46) is usually larger than the torque capacity of the forward clutch (C1), enables as prompt a vehicle start as possible without slippage of the output-side adjustable pulley (46), and prevents slippage of the output-side adjustable pulley (46) even when the battery is low.
Inventors:
ANNAKA SATOSHI (JP)
Application Number:
PCT/JP2010/053062
Publication Date:
September 01, 2011
Filing Date:
February 26, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
ANNAKA SATOSHI (JP)
ANNAKA SATOSHI (JP)
International Classes:
F16H61/00; F16H61/662
Foreign References:
| JP2003194199A | 2003-07-09 | |||
| JP2003254432A | 2003-09-10 | |||
| JP2000193081A | 2000-07-14 |
Attorney, Agent or Firm:
IKEDA HARUYUKI (JP)
Haruyuki Ikeda (JP)
Haruyuki Ikeda (JP)
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