Title:
LOCK-UP CONTROLLER FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP3422519
Kind Code:
B2
Abstract:
PURPOSE: To prevent a drawing shock at coasting and deterioration in acceleration when a throttle opening degree is high.
CONSTITUTION: A lock-up judging device 14 judges whether a lock-up clutch should be engaged or released based on a throttle opening degree signal TV0 detected by a throttle opening degree sensor 10 and a car-speed signal detected by a car-speed sensor 12, and puts out a signal to a solenoid 16. When the lock-up clutch is released, the state is kept, while when the lock-up clutch is engaged, the state is kept or a lock-up clutch release pattern is selected based on TV0. That is, a pattern is selected so that an engagement force of the lock-up clutch is reduced faster at coasting, slower at the normal TV0 and slightly slower when the TV0 is large.
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Inventors:
Naonori Iizuka
Application Number:
JP13652093A
Publication Date:
June 30, 2003
Filing Date:
May 14, 1993
Export Citation:
Assignee:
JATCO Ltd.
International Classes:
F16H61/14; F16H59/18; F16H59/24; (IPC1-7): F16H61/14
Domestic Patent References:
| JP61285141A | ||||
| JP4136564A | ||||
| JP5178125A | ||||
| JP6147310A | ||||
| JP60143265A |
Attorney, Agent or Firm:
Hisako Ishido