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stator wheel. When the reaction torque acts in the reverse direction, the stator wheel
rotates idly. In this state the input torque becomes equal to the output torque so that
high performance is ensured.
As the phase of torque transmission in changed by the mechanical means(clutch),
the torque convertor is called the 2-phase type. It features smooth operation and
enhanced efficiency.
The torque convertor is fixed to the flywheel through the flex plate so that it
rotates always together with the engine.
Inside the torque convertor are mounted the torque convertor case, turbine wheel,
pump wheel and stator wheel. The inside of torque convertor is filled with torque
convertor fluid.
The pump wheel has gear at its end which is engaged with the drive gear of
charging pump to drive it.
The turbine wheel is spline-jointed to the main shaft. It serves to transmit power
to the wet-type multidisk clutch.
(3) Dynamic shifting gearbox
Its main functions include: changing transmission ratio, satisfying the need of the
traveling forklift under different working conditions and realizing shifting gears
without power interruption.
(4) Hydraulic system
Its main functions are: supplying transmission medium -oil to torque converter
and ensuring its circular cooling, providing pressure oil for the hydraulic clutch of
shifting gearbox to control gear shifting and feeding it with lubricant.
(5) Electrical system
Its main functions are receiving gear-shifting signal, controlling gear-shifting
logic and manipulating electromagnetic valve. Based on sensor’s signal, it also can
control blocking, achieve automatic shifting, prevent overspeed of the engine and
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