Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Patent
1992-06-22
1994-06-14
Look, Edward K.
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
60260, 91444, F16D 3302, F16D 3306
Patent
active
053199499
ABSTRACT:
A regulator valve assembly adapted to be used in conjunction with a torque converter in a vehicular transmission having a pressurized hydraulic distribution system, a cooling system and a torque converter. The regulator valve assembly has a stepped valve chamber to receive a spool valve member for axial translation. The spool valve member defines first, second, third and fourth subchambers within the stepped valve chamber. Axial translation of the valve member effects selective communication between the subchambers. A first land on the spool valve member is interposed between the first and second subchambers. A second land is interposed between the second and third subchambers. A third land is interposed between the third and fourth subchambers, and a fourth land is exposed to the fourth subchamber. A first outlet communicates with the first subchamber. A first inlet and a second outlet communicate with the second subchamber. A second inlet and third outlet communicate with the third subchamber. A third inlet port communicates with the fourth subchamber. The first land exposes a projected area to the second subchamber that is less than the projected area that the second land exposes to the second subchamber. Translation of the spool valve member controls communication between the second and third subchambers as well as between the second and third subchambers. A spring biases the spool valve member in a direction to preclude communication between the first and second subchambers.
REFERENCES:
patent: 3053051 (1962-09-01), Kelley
patent: 3347042 (1967-10-01), Horsch
patent: 3478621 (1969-11-01), Johnson et al.
patent: 3748856 (1973-07-01), Uozumi et al.
patent: 3774400 (1973-11-01), Edmunds
patent: 3977502 (1976-08-01), Chana
patent: 4881625 (1989-11-01), Redelman
Cooke Dennis M.
Long Charles F.
McCauley Phillip F.
General Motors Corporation
Look Edward K.
Nguyen Hoang
Scherer Donald F.
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