Title:
AUTOMATIC TRANSMISSION HYDRAULIC CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2015194184
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an automatic transmission hydraulic control device capable of decreasing the number of components by sharing a check valve for measures taken when a switching valve switching over between a normal mode and an economic run mode is stuck to the economic run mode with the other applications.SOLUTION: If a line pressure pl is not supplied and an electromagnetic pump pressure PEMOP is supplied from an electromagnetic pump 20, then a switching valve 60 is set in a second state to supply the electromagnetic pump pressure PEMOP to a hydraulic servomechanism 4 via oil passages f1, f2, and d2 and the electromagnetic pump pressure PEMOP supplied to an oil passage g1 is cut off by a check valve 40. If the line pressure PL is supplied, a manual valve 30 is in an output state, and the switching valve 60 is fixed in the second state, then the line pressure PL is supplied to the hydraulic servomechanism 4 via oil passages a1, b1, b2, b3, g1, and d1.
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Inventors:
MAEDA YOSHIHIRO
HIRAI NOBUYUKI
YAMAGUCHI MASAJI
HYODO YOSHIMITSU
TSUCHIDA KENICHI
HIRAI NOBUYUKI
YAMAGUCHI MASAJI
HYODO YOSHIMITSU
TSUCHIDA KENICHI
Application Number:
JP2014071685A
Publication Date:
November 05, 2015
Filing Date:
March 31, 2014
Export Citation:
Assignee:
AISIN AW CO
International Classes:
F16H61/00
Attorney, Agent or Firm:
Kazuo Chikajima