Stepless transmission for vehicles

Details Stepless transmission for vehicles Stepless transmission for vehicles

1992-03-30

1993-03-16

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Impeller-turbine type fluid circuit in series with planetary...

475 70, F16H 344

Patent

active

051940523

ABSTRACT:
A hydraulically operated stepless transmission has a first power flow path established so as to include a torque converter and a reverse and reduction gear and a second power flow path established so as to include a stepless transmission gear. The first and second flow paths are selectively available. A hydraulic control circuit, including at least one oil pump, causes a decrease in quantity of a lubrication oil delivered to the stepless transmission gear while the first power flow path is established, and causes a decrease in quantity of a working oil delivered to the torque converter while the second power flow path is established.

REFERENCES:
patent: 4290320 (1981-09-01), Abbott
patent: 4624153 (1986-11-01), Itoh et al.
patent: 4644821 (1987-02-01), Sumiyoshi et al.
patent: 4649773 (1987-03-01), Svab
patent: 4856369 (1989-08-01), Stockton
patent: 4901597 (1990-02-01), Hattori et al.

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