Dual mode continuously variable transmission having multiple tor

Details Dual mode continuously variable transmission having multiple tor Dual mode continuously variable transmission having multiple tor

1997-09-29

1999-08-03

Wright, Dirk

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Nonplanetary transmission is belt or chain gearing

475207, 475213, 475271, F16H 3700

Patent

active

059317604

ABSTRACT:
An automatic transmission for an automotive vehicle includes a continuously variable drive mechanism having one sheave assembly fixed to an input shaft and an output sheave assembly supported on an intermediate shaft. A planetary gearset has a sun gear fixed to the input shaft, and a carrier fixed to an output shaft. A first fixed ratio drive mechanism is in the form of a chain drive providing a torque delivery path between the intermediate shaft and a ring gear of the gearset. A second fixed drive mechanism is in the form of a chain drive located in a torque delivery path between the output shaft and a front drive shaft. A transfer clutch is provided for connecting and releasing the output sheave of the variable drive mechanism and sprocket wheel which is fixed to that shaft. A forward brake and reverse brake are provided for holding alternately the ring gears of the gearset, and a clutch for selectively driveably connecting the output of the second fixed drive mechanism to the front drive shaft.

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The Ford Research Dual Mode Continuously Variable Transmission, T. R. Stockton.

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