192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Reexamination Certificate
2007-07-17
2007-07-17
Bonck, Rodney H. (Department: 3681)
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
C192S003630, C192S113100
Reexamination Certificate
active
11135972
ABSTRACT:
A hydraulic system of a transmission, for an automatic transmission of a motor vehicle, having several pressure circuits which can be loaded with hydraulic fluid from a pressure source and in relation to the supply of different areas of the transmission are differently prioritized. The pressure in the pressure circuits is adjustable according to a system valve and one of the pressure circuits comprises a cooling device for the hydraulic fluid and a lubrication circuit located downstream of the cooling device. Between the cooling device and the lubrication circuit is provided a bypass pipe, blockable via a valve unit, which can be controlled via the valve unit so that the hydraulic fluid flow rate to be passed via the cooling device can be adjusted without changing the hydraulic fluid flow rate to be fed to the lubrication circuit.
REFERENCES:
patent: 5305862 (1994-04-01), Gierer
patent: 5700226 (1997-12-01), Droste
patent: 6068569 (2000-05-01), Redinger et al.
patent: 6350215 (2002-02-01), Gierling
patent: 6668978 (2003-12-01), Fessler et al.
patent: 39 37 939 (1990-06-01), None
patent: 40 20 239 (1991-02-01), None
patent: 198 48 935 (2000-04-01), None
patent: 100 44 177 (2002-01-01), None
patent: 199 02 408 (2003-01-01), None
patent: 103 02 016 (2004-07-01), None
Gierer Georg
Schmidt Thilo
Bonck Rodney H.
Davis & Bujold & Daniels, P.L.L.C.
ZF Friedrichshafen AG
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