Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2007032702
Kind Code:
A
Abstract:

To provide a hydraulic control device for an automatic transmission capable of securing vehicle traveling even when an electric system is failed, without complicating a hydraulic circuit and hydraulic control.

This hydraulic control device comprises a plurality of shift actuators 41-44 setting transmission gear train transmitting power from the plurality of transmission gear trains, neutral switch valves 51-54, and a manual valve for selectively switching a shift lever S. When the manual valve is located at a P-position, the neutral switching valves 51-54 are switched from a stationary operation state to a neutral mode, and the shift actuators 41-44 are respectively placed at a neutral position, and in a D-position or a R-position, the specific neutral switch valve 52 is switched to a limp home mode, and hydraulic pressure is supplied to the shift actuator 42 to set the transmission gear train transmitting power, by the shift actuator.


Inventors:
KAKIO JUNJI
Application Number:
JP2005216796A
Publication Date:
February 08, 2007
Filing Date:
July 27, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
FUJI HEAVY IND LTD
International Classes:
F16H61/12; F16H61/68; F16H61/684; F16H59/10; F16H61/688
Domestic Patent References:
JP2004225800A2004-08-12
JP2002307984A2002-10-23
JP2004347010A2004-12-09
Attorney, Agent or Firm:
Satoshi Eto