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AssigneeZF Friedrichshafen AG
InventorJuergen Legner
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A device for actuating a frictional converter lock-up clutch of a hydrodynamic torque converter. A piston of the lock-up clutch can be acted upon by pressure of a inner chamber of a converter that acts in the engaging direction of the lock-up clutch and by pressure of a piston chamber delimited by the piston that acts in the disengaging direction. At least in the disengaging operating condition of the lock-up clutch, the piston space is connected to the inner chamber of the converter. The inner chamber can be supplied with hydraulic fluid via a first line. Hydraulic fluid can be discharged from the inner chamber via a second line. The piston chamber of the lock-up clutch can be connected to a pressurized zone and to an essentially unpressurized zone. By varying the pressure in the piston chamber, the device can modulate the transmission capacity of the lock-up clutch.
1-13. (canceled)
A device (1) for actuating a frictional converter lock-up clutch (2) of a hydrodynamic torque converter (3),
An actuator (1) for actuating a frictional converter lock-up clutch (2) of a hydrodynamic torque converter (3), a piston (7) of the converter lock-up clutch (2) being biased in an engaging direction of the converter lock-up clutch (2) by a first pressure (pWD) in an inner chamber (8) of the converter, and the piston (7) of the converter lock-up clutch (2) being biased in a disengaging direction of the converter lock-up clutch (2) by a second pressure (pWK) in a piston chamber (9) that is delimited by the piston (7),
Dependencies are inferred from the claim text.