Continuously variable transmission with synchronous shift

Details Continuously variable transmission with synchronous shift Continuously variable transmission with synchronous shift

F - Mech Eng,Light,Heat,Weapons

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F16H 37/06 (2006.01) F16H 3/72 (2006.01) F16H 37/08 (2006.01)

Patent

CA 1219470

CONTINUOUSLY VARIABLE TRANSMISSION WITH SYNCHRONOUS SHIFT ABSTRACT: A continuously variable transmission (10) with synchronous shift includes an input (14), an output (60), a fixed-ratio drive mechanism (20) and a variator (28) in driven relationship with the input, a planetary gear assembly (36) having a sun gear, a ring gear, a carrier, and a plurality of planet gears, a first clutch (A) for engaging the variator selectively with the sun and ring gears, a second clutch (B) for engaging the mechanism selectively with the carrier and sun gear and for disengaging the mechanism therefrom, and a third clutch (C) for engaging the ring gear and carrier selectively with the output. This relationship provides the transmission with a plurality of drive ranges and the capability of shifting from any range to any other range at a synchronous shift point established when the variator ratio is equal to the ratio of the mechanism.

487747

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