F 150 4WD V8-4.6L VIN 8 (2010)
Torque Converter: Description and Operation
4R70E/4R75E
Torque Converter
The torque converter transmits and multiplies torque. The torque converter is a 4-element device:
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Impeller assembly
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Turbine assembly
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Reactor assembly
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Clutch and damper assembly
The standard torque converter components operate as follows:
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Rotation of the converter housing and impeller set the transmission fluid in motion.
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The turbine reacts to the transmission fluid motion from the impeller, transferring rotation to the geartrain through the input shaft.
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The reactor redirects transmission fluid going back into the impeller, allowing for torque multiplication.
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The clutch and damper assembly dampens powertrain torsional vibration and provides a direct mechanical connection for improved efficiency.
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Power is transmitted from the torque converter to the planetary gearsets and other components through the input shaft.
