Fluid transmitting device with lock-up clutch

Details Fluid transmitting device with lock-up clutch Fluid transmitting device with lock-up clutch

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 61/14 (2006.01) F16H 45/00 (2006.01) F16H 45/02 (2006.01)

Patent

CA 2399200

A fluid transmitting device includes a side cover connected to a pump impeller and defining a clutch chamber between the side cover and an outer surface of a turbine runner, and a lock-up clutch which includes a clutch piston connected to the turbine runner. The clutch chamber is divided by the clutch piston into an inner oil chamber and an outer oil chamber. In the fluid transmitting device, a dividing means for dividing the inner oil chamber into a primary inner oil chamber section and a secondary inner oil chamber section is provided between the turbine runner and the clutch piston. When a lock-up control device is operated to urge the clutch piston in a clutch switch-on direction, the pressures in the primary inner oil chamber section and the secondary inner oil chamber section are raised in the named order relative to the outer oil chamber. Thus, the connection responsiveness of the lock-up clutch can be enhanced in a simple structure.

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