A transmission includes a torque converter with both a variable pitch stator and a bypass clutch. These are controlled in two modes to maintain a target slip speed. In a first mode, the bypass clutch is fully released and slip is controlled by varying the pitch of the stator blades. In a second mode, the stator is held in the tightest position and slip is controlled by varying the torque capacity of the bypass clutch. The target slip is calculates based on a variety of different input signals depending on what type of vehicle maneuver is being performed.
Torque Converter Having Variable Pitch Stator and Bypass Clutch
2016-06-09
Patent
Electronic Resource
English
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