Title:
HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP3839368
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a simply structured hydraulic control device of an automatic transmission capable of certainly blocking engagement pressure to a frictional engagement element such as a brake at a direct connection stage even when a fail occurs in a linear solenoid valve or the like.
SOLUTION: The hydraulic control device 1 of the automatic transmission has a 3-4 shift valve 23 for outputting initial pressure of a first route at a third speed stage lower than a fourth speed stage directly connecting an input shaft 11 and an output shaft 15 of the automatic transmission and a clutch apply control valve 17 for outputting initial pressure of a second route at a fifth speed stage higher than the direct connection stage.Both valves 23 and 17 perform a control to block both initial pressures of the first and second routes at the direct connection stage.
Inventors:
Takuya Fujimine
Akira Fukatsu
Kazuyuki Noda
Masahiko Ando
Kazutoshi Nozaki
Toshiki Kaneda
Akira Fukatsu
Kazuyuki Noda
Masahiko Ando
Kazutoshi Nozaki
Toshiki Kaneda
Application Number:
JP2002191523A
Publication Date:
November 01, 2006
Filing Date:
June 28, 2002
Export Citation:
Assignee:
Aisin AW Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F16H61/00; F16H61/12; F16H61/21; F16H61/68; F16H61/684; F16H61/686; (IPC1-7): F16H61/00; F16H61/12; //F16H63:12
Domestic Patent References:
| JP5256351A | ||||
| JP11210876A | ||||
| JP2003097692A | ||||
| JP4296248A | ||||
| JP11037262A | ||||
| JP63059250U |
Attorney, Agent or Firm:
Kazuo Chikajima
Shinji Aida
Shinji Aida
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