Title:
【発明の名称】自動変速機の制御装置
Document Type and Number:
Japanese Patent JP2878970
Kind Code:
B2
Abstract:
A control system for an automatic transmission in a vehicle powertrain including an engine and a fluid coupling for transmitting the rotation of an engine to the transmission, the transmission having a clutch which is applied responsive to selection of a forward running range and a hydraulic servo for applying the clutch responsive to an oil pressure. The control system includes a control unit for controlling the oil pressure to the hydraulic servo; an input torque detector for detecting the input torque to be inputted to the transmission; and a specific state detector for detecting satisfaction of a set of specific starting conditions including: (1) that the forward running range has been selected, (2) that the vehicle is stopped and (3) that the engine is in an idling state. The control unit sets the oil pressure to the hydraulic servo to correspond to the input torque at the instant of detection of satisfaction the specific starting conditions, and includes: a first pressure-reducer for abruptly reducing the oil pressure of the hydraulic servo to a set oil pressure immediately before the release of the clutch is started; and a second pressure-reducer for gradually reducing the oil pressure of the hydraulic servo, which has been reduced to the set oil pressure by the first pressure-reducer.
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Inventors:
IWATA AKIHITO
HAYABUCHI MASAHIRO
NISHIDA MASAAKI
YAMAMOTO YOSHIHISA
TSUTSUI HIROSHI
MINOE KAZUHIRO
HAYABUCHI MASAHIRO
NISHIDA MASAAKI
YAMAMOTO YOSHIHISA
TSUTSUI HIROSHI
MINOE KAZUHIRO
Application Number:
JP13921294A
Publication Date:
April 05, 1999
Filing Date:
June 21, 1994
Export Citation:
Assignee:
AISHIN EI DABURYU KK
International Classes:
F16H61/00; F16H61/02; F16H61/04; F16H61/10; F16H61/20; F16H63/40; F16H3/66; F16H59/16; F16H59/22; F16H59/24; F16H59/36; F16H59/44; F16H59/54; (IPC1-7): F16H61/20; F16H61/02
Attorney, Agent or Firm:
Kawai Makoto (1 person outside)