Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid resistance inhibits relative rotation
Patent
1989-06-08
1991-01-22
Wright, Dirk
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid resistance inhibits relative rotation
475249, F16H 344
Patent
active
049868004
ABSTRACT:
In the drive line of a motor vehicle, a planetary transmission is arranged as four-wheel locking system, a braking device acting upon the planet carrier of this planetary transmission. The planetary transmission includes an input sun gear, an output sun gear disposed coaxially next to it, and planet wheels mating simultaneously with both sun gears. In order to keep friction losses low and avoid a self-locking in the planetary transmission, the real pitch module of all gear wheels is as small as possible and proportional to the driving torque to be transmitted, and the operational pressure angle is as large as possible.
REFERENCES:
patent: 4520691 (1985-06-01), Rodler, Jr.
patent: 4691593 (1987-09-01), Mueller
patent: 4831890 (1989-05-01), Valentin et al.
Prof. Dr.-Ing. K. Roth, "Stirnradpaarunger mit 1-bis 5-zahrigen Ritzeln im Maschinenbau", (1974), pp. 425-429.
H.-Chr. Graf V. Seherr-Thoss, "DieEntwicklung der Zahnrad-Technik", (1965), p. 482.
Meffert Peter
Patzer Juergen
Schwarz Heinrich
Dr. Ing. h.c.F. Porsche AG
Wright Dirk
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