192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Patent
1995-10-11
1998-03-31
Bonck, Rodney H.
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
19211334, 1921133, 192 543, F16H 4502
Patent
active
057328048
ABSTRACT:
A hydrokinetic torque converter is provided with a lockup clutch which comprises a piston which can be displaced in the axial direction and can be connected with the converter housing by means of at least one friction lining. The piston, on its side facing the converter housing, defines a chamber in which, when the lockup clutch is active, a pressure is applied which is lower than the pressure of the converter circuit. In the vicinity of the friction surface, there is at least one depression for the flow of hydraulic fluid from the converter circuit. The depression empties in the vicinity of the radially inner end of the friction lining into the chamber, and has at least one connection to at least one recess in the piston, whereby the recess is designed to generate a pressure reduction with respect to the pressure in converter circuit, and is designed with a smaller cross section area than the connection or the depression.
REFERENCES:
patent: 2856050 (1958-10-01), Mathews
patent: 3805935 (1974-04-01), Armstrong
patent: 4445599 (1984-05-01), Bopp
patent: 4462492 (1984-07-01), Mueller
patent: 4930608 (1990-06-01), Schenk et al.
patent: 4969543 (1990-11-01), Macdonald
patent: 5215173 (1993-06-01), Gimmler
patent: 5248016 (1993-09-01), Umezawa
patent: 5310033 (1994-05-01), Shibayama
patent: 5501309 (1996-03-01), Walth et al.
Bonck Rodney H.
Fichtel & Sachs AG
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