Title:
SHIFTER FOR AUTOMATIC GEAR CHANGE
Document Type and Number:
Japanese Patent JPS57144338
Kind Code:
A
Abstract:
PURPOSE:To obtain a desired speed change gear line pattern by using a system in which a conventional shift valve is additionally provided with another shift valve which is switched by a governor pressure and a throttle-corresponding pressure and supplies a corrected throttle-corresponding pressure to said shift valve. CONSTITUTION:For a forward 3-speed and backward 1-speed type of automatic gear change, an oil-pressure controller consists of 1-2 shift valve 3, 2-3 shift valve 4, and 3-2 downshift valve 5. The 2-3 shift valve 4 is provided with a spool 4b such that it is moved in such a way as to balbance a governor pressure to be directed from a circuit 23 to a port 4t, a throttle-corresponding pressure to be directed from a circuit 38 to a port 4u, and a throttle-corresponding pressure to be directed from a circuit 36 to a port 4x. Also, the 3-2 downshift valve 5 is provided with a spool 5h such that it is moved by a governor pressure from the circuit 23 and a throttle-corresponding pressure from the circuit 25 and sends out a corrected throttle-corresponding pressure to the circuit 36.
Inventors:
SUGANO KAZUHIKO
IWANAGA KAZUYOSHI
IWANAGA KAZUYOSHI
Application Number:
JP2617581A
Publication Date:
September 06, 1982
Filing Date:
February 26, 1981
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
F16H61/08; F16H61/02; F16H61/10; F16H61/12; F16H63/50; F16H59/20; (IPC1-7): F16H5/64
Domestic Patent References:
| JPS55107153A | 1980-08-16 | |||
| JPS5547037A | 1980-04-02 |