System for selectively routing transmission fluid to a...

Details System for selectively routing transmission fluid to a... System for selectively routing transmission fluid to a...

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 57/04 (2010.01) F16H 41/30 (2006.01)

Patent

CA 2664457

A torque converter coupled to a transmission has a torque converter operating mode and a lockup operating mode. A first pump may be configured to supply transmission fluid to a plurality of electro-hydraulic transmission components. A second pump may be configured to supply transmission fluid to a lubrication system of the transmission. A valve may be configured to route transmission fluid supplied by the second pump through the torque converter during the torque converter operating mode. Means may also be provided for selectively routing at least some of the transmission fluid supplied by the first pump through the torque converter. Illustratively, transmission fluid supplied by the first pump may, but need not, be routed to the torque converter only during the torque converter operating mode or only during the torque converter operating mode if the temperature of transmission fluid exiting the torque converter exceeds a threshold temperature.

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