Easy to understand guide on how automotive torque converters work, this information
pertains to all automatic transmission vehicles.
A torque converter acts much like a clutch would in a manual transmission vehicle,
connecting and disconnecting the engine from the transmission to allow the engine
to run while the vehicle is stopped. Designed as a fluid coupler this unit sits
at the front of the transmission and bolts to the rear of the engine using a flex
plate. As engine RPM increases transmission fluid is coupled to create a solid barrier
which drives the transmission input shaft. Once at cruising speeds, a lock up solenoid
is used to activate the internal clutch to reduce slippage and increase mileage.