Title:
HYDRAULIC CONTROL DEVICE OF AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2017048898
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic control device of an automatic transmission which can suppress abrupt deceleration without causing the switching of a power transmission path even if a fail occurs in a hydraulic circuit during high-speed traveling using a stepless gear change mechanism.SOLUTION: A hydraulic control device of an automatic transmission comprises: a line pressure modulator valve 20 which creates original pressure; a linear solenoid valve SL2 which can supply engagement pressure PSL2 on the basis of modulator pressure P; and a supply pressure switching part 28 which can switch a first state that the engagement pressure PSL2 can be supplied to a second clutch C2, and a second state that the modulator pressure Pcan be supplied to the second clutch C2, and is in the first state at a normal time, and switched from the first state to the second state at an abnormal time.SELECTED DRAWING: Figure 3
Inventors:
TSUCHIDA KENICHI
HAYASHI TOSHIAKI
SERIGUCHI YUTA
TAKASU MASAFUMI
KIMURA YOICHIRO
ISHII KENICHI
MORIYAMA SHUJI
SOGA YOSHINOBU
NITANI HIROMITSU
INAGAKI TAKAFUMI
HAYASHI TOSHIAKI
SERIGUCHI YUTA
TAKASU MASAFUMI
KIMURA YOICHIRO
ISHII KENICHI
MORIYAMA SHUJI
SOGA YOSHINOBU
NITANI HIROMITSU
INAGAKI TAKAFUMI
Application Number:
JP2015174560A
Publication Date:
March 09, 2017
Filing Date:
September 04, 2015
Export Citation:
Assignee:
AISIN AW CO
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
F16H61/02; F16H61/04; F16H61/12; F16H61/14; F16H63/46
Domestic Patent References:
| JP2006014399A | 2006-01-12 | |||
| JP2012207722A | 2012-10-25 | |||
| JP2014163500A | 2014-09-08 | |||
| JP2016014399A | 2016-01-28 |
Attorney, Agent or Firm:
Kazuo Chikajima