Title:
HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2018/182012
Kind Code:
A1
Abstract:
In the present invention, when an automatic transmission has a characteristic wherein the belt winding diameter at a primary pulley (41) is greater than the belt winding diameter at a secondary pulley (42) when the primary pressure and the secondary pressure are the same, and a first electromagnetic actuator (SLPs) and a second electromagnetic actuator (SLSs) are unable to operate, a failsafe valve (124) changes the position of a fist valve body (123p1) of a primary pressure control valve (123P) such that the primary pressure decreases.
Inventors:
TSUCHIDA KENICHI (JP)
MAKINO KOJI (JP)
HAYASHI TOSHIAKI (JP)
AIKAWA FUMIAKI (JP)
UMEMURA HARUNOBU (JP)
MAKINO KOJI (JP)
HAYASHI TOSHIAKI (JP)
AIKAWA FUMIAKI (JP)
UMEMURA HARUNOBU (JP)
Application Number:
PCT/JP2018/013969
Publication Date:
October 04, 2018
Filing Date:
March 30, 2018
Export Citation:
Assignee:
AISIN AW CO (JP)
International Classes:
F16H61/12; F16H61/00; F16H61/662
Foreign References:
| JPH0642625A | 1994-02-18 | |||
| JPH03189467A | 1991-08-19 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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