Title:
SHIFT CONTROLLER FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP3399371
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To mitigate shift quality by calculating a shift time constant for setting a shift speed which decides a target change gear ratio based on a time constant calculation mode matching the shift requirement of a driver by a deviation calculated from a reach change gear ratio and the target change gear ratio.
SOLUTION: A reach change gear ratio setting means sets the reach change gear ratio based on the operation states of a driver or a traveling state of a vehicle and a target change gear ratio setting means sets a target change gear ratio in such a state that the practical change gear ratio changes at a prescribed change gear speed in relation to the reach change gear ratio. After that, a deviation calculating means calculates the deviation between the reach change gear ratio (i*) and the target change gear ratio (Ratio0) and a mode setting means sets a time constant calculation mode according to the shift requirement of the driver based on the calculated deviation. The time constant setting means calculates the shift time constant for setting the shift speed deciding the target change gear ratio based on the time constant calculation mode. This constitution can provide a shift action matching the requirements of the driver.
Inventors:
Yasushi Narita
Yusuke Minagawa
Akira Takizawa
Masato Koga
Mitsuru Watanabe
Yusuke Minagawa
Akira Takizawa
Masato Koga
Mitsuru Watanabe
Application Number:
JP27119298A
Publication Date:
April 21, 2003
Filing Date:
September 25, 1998
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F16H9/00; F16H61/04; (IPC1-7): F16H61/04; F16H9/00
Domestic Patent References:
| JP10220570A | ||||
| JP102406A |
Attorney, Agent or Firm:
Akihide Sugimura (6 others)