Title:
CONTROL DEVICE OF LOCKUP CLUTCH
Document Type and Number:
Japanese Patent JP2017089781
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make a differential rotation number of a lockup clutch follow a target differential rotation number even if the back pressure and the pack-end pressure of the lockup clutch is deviated from a design value.SOLUTION: When a control device 10 controls a state of a lockup clutch 5 to an acceleration flexible control state and a deceleration flexible control state, a target torque capacity going below zero is handled as a negative value, and a target torque capacity of the lockup clutch 5 necessary for feedforward-controlling an estimated differential rotation number of the lockup clutch 5 which is estimated by a model formula to a target differential rotation number is thereby calculated. By this constitution, since indication pressure which is lower than a design value of a sum of the back pressure and the pack-end pressure of the lockup clutch 5 can be outputted, even if the back pressure and the pack-end pressure of the lockup clutch 5 are deviated from the design value, a differential rotation number of the lockup clutch 5 can be made to follow the target differential rotation number.SELECTED DRAWING: Figure 1
Inventors:
ANDO TAKAYUKI
KUWABARA SEIJI
SHINOHARA TOSHITARO
MITO RYOSUKE
KUWABARA SEIJI
SHINOHARA TOSHITARO
MITO RYOSUKE
Application Number:
JP2015221779A
Publication Date:
May 25, 2017
Filing Date:
November 12, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/14
Domestic Patent References:
| JP2002188717A | 2002-07-05 | |||
| JP2002130462A | 2002-05-09 | |||
| JP2012184805A | 2012-09-27 | |||
| JP2005164012A | 2005-06-23 | |||
| JP2003269604A | 2003-09-25 | |||
| JP2016173123A | 2016-09-29 |
Attorney, Agent or Firm:
Sakai International Patent Office