Title:
HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2011/099420
Kind Code:
A1
Abstract:
During pre-shifting of shift control, a line-pressure control means (102) determines a pressure-rise ΔPL in a line pressure PL on the basis of a pressure-rise map stored in a memory (101), and controls a linear solenoid valve (204) for line pressure control such that the line pressure PL adjusted by a regulator valve (202) is increased by the pressure-rise ΔPL. For example, a control oil pressure corresponding to the pressure-rise ΔPL is supplied from the linear solenoid valve (204) for line pressure control to the regulator valve (202). With this, a large amount of working oil supplied from a hydraulic pump is ejected from an output port of the line pressure PL. As a result, a reduction in the line pressure PL can be sufficiently suppressed compared with the case where the line pressure PL is not increased as in the related art although the line pressure PL adjusted inside a line pressure circuit may slightly vary at the start of the stroke of a hydraulic piston (21X).
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Inventors:
TAKA SHOHEI (JP)
SADAKIYO MASAYUKI (JP)
SADAKIYO MASAYUKI (JP)
Application Number:
PCT/JP2011/052280
Publication Date:
August 18, 2011
Filing Date:
February 03, 2011
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
TAKA SHOHEI (JP)
SADAKIYO MASAYUKI (JP)
TAKA SHOHEI (JP)
SADAKIYO MASAYUKI (JP)
International Classes:
F16H61/00; F16H59/68; F16H61/02; F16H61/688
Foreign References:
| JPH09317867A | 1997-12-12 | |||
| JP2008309217A | 2008-12-25 | |||
| JPH109377A | 1998-01-13 |
Attorney, Agent or Firm:
IIZUKA, Yoshihito et al. (JP)
Yoshihito Iizuka (JP)
Yoshihito Iizuka (JP)
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Claims: