Title:
HYDRAULIC PRESSURE CONTROL DEVICE OF VEHICULAR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP3399303
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent repeated generation of an overshoot by judging whether a learning correction by a released side oil pressure learning control means is prohibited, based on the running state before the generation of an overshoot, on the prescribed running state such as a throttle valve opening.
SOLUTION: During vehicular running, in a learning propriety judging means 164, whether a learning correction is carried out by a released side oil pressure learning control means 162 is judged by whether a vehicular running state satisfies a prescribed learning allowable condition. Thereby, the learning correction based on the overshoot amount ΔNE of an engine rotation speed changed by a factor except a precribed timing in a clutch-to-clutch (2→3) speed change term is avoided. The released side oil pressure learning control means 162 corrects the oil pressure in a brake by learning so that the overshoot amount ΔNE is within a prescribed target range, when the throttle valve opening satisfies a prescribed learning allowable condition such as nearly constant.
Inventors:
Nobuaki Takahashi
Makoto Kondo
Yasuya Nakamura
Makoto Kondo
Yasuya Nakamura
Application Number:
JP19607797A
Publication Date:
April 21, 2003
Filing Date:
July 22, 1997
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F16H61/06; (IPC1-7): F16H61/06
Domestic Patent References:
| JP8285065A | ||||
| JP5126243A |
Attorney, Agent or Firm:
Haruyuki Ikeda (2 outside)