Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Impeller-turbine type fluid circuit in series with planetary...
Patent
1988-08-23
1990-09-11
Diehl, Dwight
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Impeller-turbine type fluid circuit in series with planetary...
475280, F16H 4708
Patent
active
049558510
ABSTRACT:
A transmission has torque converter with an impeller, primary and secondary turbines and a stator. In a first planetary gear set the carrier is connected to the primary turbine, the sun gear is connected to the secondary turbine and the ring gear is connected to a friction clutch. This friction clutch is used in the first and last forward driving phases and in reverse. A second planetary gear set has a second carrier connected to the output shaft and a second ring gear connected to the first carrier. A brake is connected to the friction clutch and to the second sun gear for low forward speed range. A second friction clutch locks up the second planetary gear in high speed. A one-way clutch connected to the stator provides phase differentiation in all forward speed ranges. A third friction clutch between the impeller and second turbine is required in conjunction with the first and second clutches to provide the final driving phase. Another brake brakes the primary turbine, the first carrier, and the second ring gear in reverse operation, causing the secondary turbine to drive the first sun gear and the first ring gear to drive the second sun gear through the first clutch to turn the output shaft slowly in reverse.
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Arzoian John
Shih Shan
Trachman Edward G.
Diehl Dwight
Rockwell International Corporation
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