Title:
CREEP PREVENTING APPARATUS FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JPS61278658
Kind Code:
A
Abstract:
PURPOSE:To suppress the advance shock by installing a creep preventing control valve and a connection-pressure increase-rate control valve for switching the increase rate of the connection pressure of a frictional element on advance, into the feeding passage for the working oil pressure supplied into the frictional element for advance. CONSTITUTION:A creep preventing control valve 20 and a connection-pressure increase-rate control valve 10 are inserted into an oil passage 61 for the supply of the working-oil pressure PL for connection of a rear clutch 70. The creep preventing control valve 20 operates through the electric conduction of a solenoid valve 30 according to the judgement of the engine state by a control circuit 40. The connection-pressure increase-rate control valve 10 is equipped with an orifice 14 in an output oil passage 12, and reduces the increase rate of the connection oil pressure for the rear clutch 70 by reducing the flow rate of the working oil. Therefore, the connection speed for the rear clutch 70 is made gentle, and the advance shock can be suppressed.
Inventors:
YAGI YOICHI
Application Number:
JP11966485A
Publication Date:
December 09, 1986
Filing Date:
June 04, 1985
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
F16H45/00; F16H61/04; F16H61/10; F16H61/20; (IPC1-7): F16H5/64; F16H45/00
Attorney, Agent or Firm:
Akihide Sugimura