Title:
【発明の名称】自動変速機の制御方法
Document Type and Number:
Japanese Patent JP2517925
Kind Code:
B2
Abstract:
If a vehicle is at rest after it has been detected that the shift position of the vehicle transmission has been shifted to neutral, hydraulic pressure is introduced to a brake in the transmission gear train that is for establishing the first speed state. The introduction of hydraulic pressure to the brake causes the brake to engage in advance of an actual shift to first speed. As a result, when the shift position is shifted out of the neutral range, the first speed state is quickly established, thereby shortening the neutral-to-drive shift time lag when the vehicle is at rest. If the vehicle is traveling after the shift to neutral has been detected, hydraulic pressure is exhausted from the brake to disengage the same, thereby preventing high-speed rotation of sun gears and clutch disk in the gear train due to transmission of rotation from the output side of the automatic transmission.
Inventors:
HASEGAWA HIROMI
ISHIGURO TOSHIAKI
ISHIGURO TOSHIAKI
Application Number:
JP23155186A
Publication Date:
July 24, 1996
Filing Date:
September 30, 1986
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
B60W10/00; B60W10/10; B60W10/18; B60W10/02; B60W10/184; F16H61/02; F16H61/08; F16H61/16; F16H61/20; F16H59/08; F16H59/40; F16H59/44; F16H61/04; (IPC1-7): B60K41/22; B60K41/28
Domestic Patent References:
| JP62241739A |
Attorney, Agent or Firm:
Asato Kato