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 calculated 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
2018-11-06
Patent
Elektronische Ressource
Englisch
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