Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Single impeller-turbine type fluid circuit divides or...
Patent
1989-05-31
1990-07-24
Diehl, Dwight
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Single impeller-turbine type fluid circuit divides or...
475 45, 475 54, 475 55, 475 56, F16H 4704
Patent
active
049427792
ABSTRACT:
In an automatic transmission incorporating a planetary gear transmission at a rear stage of a four-element torque converter comprising two stators, a turbine and a pump; a planetary gear train of an automatic transmission, wherein a reversal torque of a first stator reversing in a low speed ratio zone is converted into a normal torque by the planetary gear train so that this output from the first stator can be added to an output shaft, when a first speed of the planetary gear transmission is selected; a friction element is provided for limiting a rotation of the first stator in the speed ratio zone where the first stator rotates in the reverse direction, a one-way clutch for transmitting a torque only in a specified direction is installed, and the first stator is permitted to run idle by this one-way clutch so that a fluid loss in a stator portion can be minimized, when a second speed of the planetary gear transmission is selected.
REFERENCES:
patent: 2889715 (1959-06-01), DeLorean
patent: 2919604 (1960-01-01), DeLorean
patent: 3141355 (1964-07-01), Gabriel
patent: 3188887 (1965-06-01), Gabriel
patent: 3313179 (1967-04-01), Flinn
patent: 3359827 (1967-12-01), Chapman, Jr. et al.
patent: 3772939 (1973-11-01), Hause
patent: 4724720 (1988-02-01), Ohkubo
patent: 4811631 (1989-03-01), Honig et al.
Campbell Chris
Diehl Dwight
Kabushiki Kaisha Daikin Seisakusho
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