Hanging forward gear, automatic transmission, the car did not turn off. At this time the engine power are used where?
Everyone said, is the torque converter. The energy of the input shaft is converted into the kinetic energy of the liquid and finally dissipates into heat energy.
A small amount of scattered to the parts and air kinetic energy, a lot of heat lost.
The gearbox absorbs a little, and the rest are consumed on the engine