Title:
CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2009243492
Kind Code:
A
Abstract:
To appropriately control the input shaft rotational speed NI of an automatic transmission.
In this control device for the automatic transmission, an ECT_ECU performs a program including: a step (S102) of downshifting so that a B3 brake (or a B1 brake) is released and an engagement force of a C2 clutch is controlled to be reduced to a predetermined target value, and after that, the C2 clutch is disengaged, and a C1 clutch and the B1 brake (or the B3 brake) are controlled to be engaged with each other; and steps (S112, 122) of correcting the target value of the engagement force of the C2 clutch according to a rate of a change in turbine rotational speed NT (input shaft rotational speed NI of the automatic transmission).
Inventors:
SAGAWA AYUMI
OSHIMA YASUTSUGU
OSHIMA YASUTSUGU
Application Number:
JP2008087669A
Publication Date:
October 22, 2009
Filing Date:
March 28, 2008
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/04; F16H59/42; F16H59/68; F16H61/686
Domestic Patent References:
| JP2000145939A | 2000-05-26 | |||
| JP2008069854A | 2008-03-27 | |||
| JPH09264410A | 1997-10-07 | |||
| JP2002310281A | 2002-10-23 | |||
| JP2002295663A | 2002-10-09 | |||
| JPS63266258A | 1988-11-02 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yutaka Horii
Nobuo Arakawa
Toshio Morita
Yutaka Horii
Nobuo Arakawa