Title:
【発明の名称】無段変速機の制御装置
Document Type and Number:
Japanese Patent JP2900286
Kind Code:
B2
Abstract:
A continuously variable belt-drive transmission has a primary pulley operatively connected to an engine and a secondary pulley operatively connected to wheels of a motor vehicle, a primary cylinder and a secondary cylinder, and a hydraulic circuit having an oil pump. Primary pressure for the primary cylinder is generated by reducing secondary pressure. Steady flow rate in the primary system in a steady state is calculated, and transient flow rate in the primary system in a transient state is calculated. A primary pressure changing rate is determined to the value that the sum of secondary flow rate, the steady flow rate, and the transient flow rate becomes smaller than a discharge flow rate of the pump. In response to the primary pressure changing rate, a primary pressure control valve is operated so as to maintain balance of flow rate between the primary system and the secondary system.
Inventors:
SATO YOSHIJI
Application Number:
JP29438290A
Publication Date:
June 02, 1999
Filing Date:
October 31, 1990
Export Citation:
Assignee:
FUJI JUKOGYO KK
International Classes:
F16H61/00; F16H61/02; F16H61/04; F16H9/00; F16H61/10; F16H61/662; (IPC1-7): F16H61/02; F16H9/00
Domestic Patent References:
| JP5872758A | ||||
| JP61105352A | ||||
| JP2283958A |
Attorney, Agent or Firm:
Nobuhiro Kobashi (1 outside)