Title:
LOCKUP CONTROLLER FOR TORQUE CONVERTER
Document Type and Number:
Japanese Patent JP3167956
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce the minimum lockup coupling of a torque converter irrespectively of dispersion in the coefficient of friction over the facing of its lockup clutch, by calculating the minimum lockup capacity on the basis of the slip- caused capacity where target slight slips are just caused between the input and output elements of the converter during coasting.
SOLUTION: A lockup controller comprises a coasting state detection means 50 for detecting the coasting state of a vehicle, a slip detection means 51 for detecting target slight slips, a capacity detection means 52 for detecting the lockup capacity of a torque converter, a storage means 53 for detecting the slip-caused capacity where slips are just caused with those means and updating and storing the detected slip-caused capacity upon occasions, and a coasting lockup control means 54 for decreasing the lockup capacity to the coupling capacity obtained by the addition of a predetermined capacity to the preceding stored slip-caused capacity with the means 50 and 53 and controlling the minimum lockup coupling capacity on the basis of the new slip-caused capacity calculated from the coupling capacity.
Inventors:
Akira Watanabe
Kazutaka Adachi
Shigeru Ishii
Tatsuo Wakahara
Kazutaka Adachi
Shigeru Ishii
Tatsuo Wakahara
Application Number:
JP10922797A
Publication Date:
May 21, 2001
Filing Date:
April 25, 1997
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F16H61/14; F16H59/18; (IPC1-7): F16H61/14
Domestic Patent References:
| JP821526A | ||||
| JP8178056A | ||||
| JP8261322A |
Attorney, Agent or Firm:
Akihide Sugimura (9 outside)