Hyundai HL955 Manual page 55

2. TORQUE CONVERTER 2. TORQUE CONVERTER
1) 1)
FUNCTION FUNCTION
5
1 Turbine
2 Stator
The converter is working according to the Trilok-system, i.e. it assumes at high turbine speed the
characteristics, and with it the favorable efficiency of a fluid clutch.
The converter is designed according to the engine power so that the most favorable operating
conditions are obtained for each installation case.
The Torque converter is composed of 3 main components :
Pump wheel - turbine wheel - stator (reaction member)
These 3 impeller wheels are arranged in such a ring-shape system that the fluid is streaming through
the circuit components in the indicated order.
Pressure oil from the transmission pump is constantly streaming through the converter. In this way, the
converter can fulfill its task to multiply the torque of the engine and at the same time, the heat created in
the converter is dissipated via the escaping oil.
The oil which is streaming out of the pump wheel, enters the turbine wheel and is there inversed in the
direction of flow.
According to the rate of reversion, the turbine wheel and with it also the output shaft is receiving a more
or less high reaction torque. The stator (reaction member), following the turbine, has the task to reverse
the oil streaming out of the turbine once more and to deliver it under the suitable discharge direction to
the pump wheel.
Due to the reversion, the stator receiving a reaction torque.
The relation turbine torque/pump torque is called torque multiplication. This is the higher, the greater
the speed difference of pump wheel and turbine wheel will be.
Therefore, the maximum torque multiplication is created at stationary turbine wheel.
With increasing output speed, the torque multiplication is decreasing. The adaption of the output speed
to a certain required output torque will be infinitely variable and automatically achieved by the torque
converter.
1 2
3 Pump
4 Transmission pump
3-4
3 4
5 Input flange
73033TM00