Title:
HYDRAULIC CONTROL CIRCUIT FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP3047811
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain engine brake effect at the time of the first speed in a range except the first range with a compact circuit constitution.
SOLUTION: A hydraulic control circuit is equipped with a hydraulic servo B-2 for attaining the first speed engine brake; its pressure regulating valve 3; a shift vale 2 and a lockup controlling solenoid valve 7. Control pressure (Pstu) outputted from the solenoid valve 7 is applied to the pressure regulating valve 3 through the shift valve 2 during the first speed to make it possible to supply brake engaging pressure to the hydraulic servo B-2. In the case of over the second speed, the control pressure outputted from the solenoid valve 7 is returned to a lockup circuit by the changing over of the shift valve 2.
Inventors:
Jiro Nishiwaki
Mitsuhiko Ando
Mitsuhiko Ando
Application Number:
JP9906796A
Publication Date:
June 05, 2000
Filing Date:
March 28, 1996
Export Citation:
Assignee:
Aisin AW Co., Ltd.
International Classes:
F16H61/00; F16H61/14; (IPC1-7): F16H61/00; F16H61/14
Domestic Patent References:
| JP6241454A | ||||
| JP8105536A | ||||
| JP6341541A | ||||
| JP8105535A | ||||
| JP1164848A |
Attorney, Agent or Firm:
Hideyuki Abe