Moxy MT 31 - Converter; Function of the Converter

SHOP MANUAL MT26/31 - 08.2006 SHOP MANUAL MT26/31 - 08.2006
SHOP MANUAL MT26/31 - 08.2006 SHOP MANUAL MT26/31 - 08.2006
TRANSMISSION
Ch 2 page 136 Ch 2 page 137
TRANSMISSION
TRANSMISSION
Ch 2 page 136 Ch 2 page 137
TRANSMISSION
FUNCTION OF A HYDRODYNAMIC TORQUE CONVERTER
(SCHEMATIC VIEW)
The converter is working according to the Trilok-System, i.e. it assumes at high turbine speed
the characteristics, and with it the favourable efficiency of a fluid clutch.
The converter is designed according to the engine power so that the most favourable operating
conditions are obtained for each installation case.
The Torque converter is composed of 3 main components:
Impeller – Turbine wheel – Stator (Reaction member)
These 3 impellers are arranged in such a ring-shaped 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 impeller, enters into the turbine wheel and is there rever-sed
in the direction of flow.
According to the rate of reversion, the turbine wheel and with it also the output shaft is receiv-ing
a more or less high reaction moment.
Converter
Function of the Converter:
T
P
= Torque of the
Impeller
T
T
= Torque of the
Turbine wheel
T
R
= Tor que of the
Reaction member
(Stator)
N
T
= 0
Vehicle isstationary
n
T
=
�
��
� n
Engine
n
T
=
0,8 n
Engine
Impeller
1
1
1
1,5
�
��
1,5
2,5
1
T
P
T
T
0
2,5
Turb ine wheel
T
R
Reaction member
(Stator)
From the
Engine
Condition in the
moment of the
start off
Intermediate
condition
Condition in the
lock-up point
To the
transmission
< <
<