Eight speed dual clutch transmissions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 23, 2013
Grant Date -
Jul 12, 2012
app pub date -
Jan 10, 2011
filing date -
Jan 10, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An eight forward speed dual clutch transmission includes a pair of input clutches which selectively provide drive torque to a pair of concentric input shafts. Gears coupled to and driven by the input shafts are in constant mesh with gears freely rotatably disposed on a pair of parallel countershafts or layshafts. A plurality of synchronizer clutches selectively synchronize and connect the various gears to the countershafts or layshafts to provide a desired gear ratio in the proper sequence. Reverse gear is similarly provided through a three gear gear train. Upon the synchronization and engagement of a particular gear, the associated input clutch is activated or engaged to supply drive torque to the input shaft, through the synchronized and engaged gear pair and out the countershaft or layshaft. An additional gear on each countershaft or layshaft engages a common gear that directly drives a differential which, in turn, drives a pair of drive axles.
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