Title:
CONTROL DEVICE OF AUTOMATIC SPEED CHANGE GEAR
Document Type and Number:
Japanese Patent JPS6184459
Kind Code:
A
Abstract:
PURPOSE:To prevent a speed change shock by delaying the generation of a lock up release signal until the change condition of rotational frequency of an engine output shaft becomes downward tendency if the change condition is in upward tendency when a shift up signal is generated in the lock up state. CONSTITUTION:The above control device is adapted to intermittently control a lock up mechanism A provided on a torque converter by controlling lock up electromagnetic means B, and operate a geared speed change mechanism C to change speed by controlling speed change electromagnetic means D. In this case, when a shift up signal CP is output from speed change control means E in the lock up state, according to an output of rotational frequency change condition detection means G, if the rotational frequency of an engine output shaft is downward tendency, a lock up release signal Cq' is output in synchronization with outputting of the signal CP, and if it is in upward tendency, outputting of the signal Cq' is delayed by lock up release timing adjust means F. The delay of outputting the signal Cq' is set as time taken until the rotational frequency becomes downward tendency by delay condition set means H.
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Inventors:
WAKI KOICHIRO
AZUMA HARUMI
KIKUCHI TOSHIYUKI
YASHIKI SEIJI
AZUMA HARUMI
KIKUCHI TOSHIYUKI
YASHIKI SEIJI
Application Number:
JP20405284A
Publication Date:
April 30, 1986
Filing Date:
October 01, 1984
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F16H61/14; (IPC1-7): F16H45/02
Domestic Patent References:
| JPS576151A | 1982-01-13 |
Attorney, Agent or Firm:
Murata Minoru