192 clutches and power-stop control – Clutches – Operators
Patent
1996-07-10
1998-04-28
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Operators
192 30W, 192109F, F16D 250638, F16H 6100
Patent
active
057433682
ABSTRACT:
An automatic transmission control system includes a frictional engagement element formed of alternating radially inner and outer thin plates for selectively transmitting a torque. The control system further includes a hydraulic servo having a piston which selectively engages/disengages the frictional engagement element responsive to an oil pressure. An electric characteristic detector detects (monitors) an electric characteristic which changes with change in the apply force of the frictional engagement element; and an apply force control unit controls the apply force of the frictional engagement element. The electric characteristic detector includes a signal generator for generating an electric signal in accordance with the relative positions of two electrically conductive members, which move as the frictional engagement element is engaged/disengaged. The apply force control unit includes a hydraulic controller for controlling the oil pressure fed to the hydraulic servo, on the basis of the electric signal received from the signal generator.
REFERENCES:
patent: 4440279 (1984-04-01), Schreiner
patent: 4474274 (1984-10-01), Lutz et al.
patent: 4705151 (1987-11-01), Leigh-Monstevens et al.
patent: 5029678 (1991-07-01), Koshizawa
patent: 5103954 (1992-04-01), Muncke et al.
de Schepper Frank
Suzuki Kenji
Aisin Aw Co. Ltd.
Bonck Rodney H.
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