Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1986-04-16
1987-10-13
Braun, Leslie
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74793, 74846, 192 4B, F16H 344, B60K 2902
Patent
active
046990224
ABSTRACT:
A planetary gear system employs a retarder to provide fluid coupling of power during startup and fluid braking during deceleration. At idle with the output shaft stationary, an input shaft rotates in one direction and the retarder rotates in the opposite traction. When the retarder is activated by adding working fluid, the resultant torque coupled to the output shaft rotates the output shaft in the same direction as the input shaft. The retarder rotor can be mechanically braked to produce a first mechanical gear. Further coupling rotates the input shaft, output shaft and retarder rotor at the same speed in the same direction to form a second mechanical gear. Hydrodynamic braking can be performed in the second mechanical gear by adding working fluid to the retarder. A control system is disclosed which varies the level of working fluid during acceleration to a value which permits the input shaft to rotate at a required value regardless of the acceleration input signal. In addition, acceleration can be controlled proportionally to the output shaft speed. At a predetermined value of output speed, the retarder is automatically drained in order to take advantage of mechanical gearing. During braking, the level of fluid in the retarder is varied to provide a braking torque proportional to the braking signal.
REFERENCES:
patent: 2339015 (1944-01-01), Jandasek
patent: 2341512 (1944-02-01), Burtnett
patent: 2343509 (1944-03-01), Jandasek
patent: 2365879 (1944-12-01), Jandasek
patent: 2397634 (1946-04-01), Voytech
patent: 2924992 (1960-02-01), Edsall
patent: 2996932 (1961-08-01), Gsching
patent: 3075410 (1963-01-01), Weinrich et al.
patent: 3091980 (1963-06-01), Black
patent: 3105393 (1963-10-01), Weinrich
patent: 3204487 (1965-09-01), Moore
patent: 3481148 (1969-12-01), Muller et al.
patent: 3601211 (1971-08-01), Finke
patent: 3709069 (1973-01-01), Hagen
patent: 3749209 (1973-07-01), Weinrich et al.
patent: 3818782 (1974-06-01), Armasow
patent: 3941224 (1976-03-01), Hanke
patent: 4077502 (1978-03-01), Nitsche
patent: 4089239 (1978-05-01), Murakami et al.
patent: 4169414 (1979-10-01), Muller
patent: 4191072 (1980-03-01), Ehrlinger et al.
patent: 4257504 (1981-03-01), Hanke
patent: 4273224 (1981-06-01), Brown et al.
patent: 4361211 (1982-11-01), Lindenthal
patent: 4432442 (1984-02-01), Vogelsang
patent: 4440272 (1984-04-01), Bieber
patent: 4471668 (1984-09-01), Elsner
patent: 4471670 (1984-09-01), Muller
Helfer Friedrick
Stadt Enno
Braun Leslie
J.M. Voith, GmbH.
Rolnicki Joseph M.
LandOfFree
Planetary gear control system with retarder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Planetary gear control system with retarder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetary gear control system with retarder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-404836