Hydraulic control apparatus for an automatic dual-clutch...

Details Hydraulic control apparatus for an automatic dual-clutch... Hydraulic control apparatus for an automatic dual-clutch...

2006-09-21

2009-12-22

Wright, Dirk (Department: 3655)

192 clutches and power-stop control

Clutches

Operators

Reexamination Certificate

active

07635058

ABSTRACT:
The invention relates to a hydraulic control device for an automatic dual-clutch transmission which has a first clutch and a second clutch, having a control valve unit which predefines at least one hydraulic parameter such as pressure and/or one volume flow. Regulating this parameter engages or disengage the clutches. An additional separating valve can is provided assuming a normal position when the second control signal is applied, so that at least one of the clutches can be operated by means of the control valve unit. The purpose is to provide enhanced operational safety against misoperation while at the same time secure availability of the clutches.

REFERENCES:
patent: 101 34 115 (2003-01-01), None

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