Specifications

35
3.2 Torque converter (Fig 3.2)
The torque converter mainly consists of an impeller, a turbine and a guide wheel.
The liquid, from the impeller driven by an input shaft, is jetted along its leaves to
leaves of the turbine to transmit the torque to the output shaft (Mechanical energy is
changed into kinetic one). And the flowing direction of the liquid from the turbine wheel
is changed by the idler pulley to cause partial liquid return the impeller at an angle and
produce so large reaction torque driving the idler pulley that the value of output torque
is more than that of input torque by the value of the reaction torque. When the turbine
speed keeps on increasing up to speed of the impeller, the change rate of the flow
angle slows down and the value of the output torque keeps on decreasing until the
liquid flows into the leaves of the idler pulley in opposite direction. When original
reaction torque acts in the opposite direction, the torque value of the output shaft is
less than that of the input shaft. To prevent this, a one-way clutch is fitted in the idler
pulley, causing the idler pulley freely rotate on this case. The way of torque-converting
can be used to ensure efficient and smooth work of the torque converter.
The torque converter, filled up with the torque converter oil, in the drive unit is
driven by an engine through a spring plate and flywheel on the engine. A charging
pump is driven by a driving gear which is supplied by the pump. The power is
transmitted to the transmission through a turbine shaft spliced to the turbine.
Fig3.2 Torque converter
1.
Spring plate
2.
Turbine
3.
Impeller
4.
Idler pulley
5.
One-way clutch