Power plants – Pressure fluid source and motor – Condition responsive control of pump or motor displacement
Patent
1987-10-06
1988-05-24
Wayner, William E.
Power plants
Pressure fluid source and motor
Condition responsive control of pump or motor displacement
60449, 417216, F16D 3102
Patent
active
047457465
ABSTRACT:
The present invention is directed to a power control for an automatic transmission which consists of two valves, the first of which is a characteristic valve providing a pressure differential linearly proportional to an input speed signal provided by a prime mover driven fixed displacement pump, and a second valve which is modulated by the pressure differential generated by the first valve and by a pressure feedback proportional to the torque transmitted by the transmission. The power control provides a series of linear control curves proportional to input speed and is useful as either an automotive type control or an anti-stall control, or a combination of both.
REFERENCES:
patent: 3635021 (1972-01-01), McMillen et al.
patent: 3650108 (1972-03-01), Isaac
patent: 3672166 (1972-06-01), Isaac
patent: 3693349 (1972-09-01), Morris
patent: 3788063 (1974-01-01), Kempson
patent: 3803843 (1974-04-01), Wyman et al.
patent: 3805676 (1974-04-01), Hamma
patent: 3866420 (1975-06-01), Appel
patent: 3886742 (1975-06-01), Johnson
patent: 3908377 (1975-09-01), Riedhammer
patent: 3932993 (1976-01-01), Riedhammer
patent: 3946560 (1976-03-01), McIntosh
patent: 3946561 (1976-03-01), Riedhammer
patent: 3964262 (1976-06-01), Patton
patent: 3986358 (1976-10-01), Hoffmann
patent: 3996743 (1976-12-01), Habiger et al.
patent: 3999387 (1976-12-01), Knopf
patent: 4017215 (1977-04-01), Butler
patent: 4050247 (1977-09-01), Connett
patent: 4074955 (1978-02-01), Nonnemacher
patent: 4116002 (1978-09-01), Knapp
patent: 4168612 (1979-09-01), Nikolaus
patent: 4189921 (1980-02-01), Knapp
patent: 4203712 (1980-05-01), Uehara
patent: 4216656 (1980-08-01), Hamma
patent: 4285195 (1981-08-01), Budzich
patent: 4292805 (1981-10-01), Acheson
patent: 4330991 (1982-05-01), Budzich
patent: 4365473 (1982-12-01), Schexnayder
patent: 4398869 (1983-08-01), Kirkham
patent: 4400935 (1983-08-01), Louis
patent: 4476680 (1984-10-01), Pollman et al.
patent: 4479349 (1984-10-01), Westveer
patent: 4510750 (1985-04-01), Izumi et al.
patent: 4530416 (1985-07-01), Kassai
patent: 4531367 (1985-07-01), Backe et al.
patent: 4553626 (1985-11-01), Kazmiezrczak
patent: 4571940 (1986-02-01), Wuchenauer
SAE Paper 851,505, Strommel & Sticklin-"An Automotive Type Hydrostatic Transmission Control".
Joike Trevor B.
Sundstrand Corporation
Wanner James A.
Wayner William E.
Williamson Harold A.
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