SSANGYONG Kyron Repair Manual page 37

Lock Up Clutch
1. Pump
2. Turbine
3. Stator
4. Stator shaft
Lockup clutch consists of multiple disc clutches as
shown in the figure and is activated in 3rd, 4th and 5th
gears.
The aim of using torque converter lockup clutch is to
reduce the fuel consumption and exhaust gas emissions
of the vehicle by reducing torque converter slip. This
stands in contradiction to the ride comfort demands made
on the drive train with regard to its vibration behaviors.
The task of the electronic transmission control is there-
fore to close the clutch in all driving situations relevant
to fuel consumption, if possible, and ensure that the
engine vibrations are isolated from the drive train.
The characteristic curves shown in the diagram illus-
trate the different operating states of the torque con-
verter lockup clutch in relation to the accelerator pedal
position and the transmission output speed, plotted for
one transmission gear.
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Lockup Mode (Open/Slipping)
D20DT
D27DT
5. Outer multiple disc
6. Inner multiple disc
7. Converter cover
8. One-way clutch
Variables influencing the states of the torque con-
verter lockup clutch:
1. Accelerator pedal movement
2. Uphill and downhill gradients
3. Transmission shift functions
4. Transmission oil temperature
5. Load conditions
6. Engine control influences
7. If the fluid temperature is over 130°C, the lock up
clutch is operated at 1st and 2nd gears. (to reduce
the fluid temperature)
5rd GEAR OPEN
5rd GEAR SLIPPING
4rd GEAR OPEN
4rd GEAR SLIPPING
3rd GEAR OPEN
3rd GEAR SLIPPING
0
20 40 60 80
PEDAL VALUE (%)
9. Input shaft
10. Disk
11. Piston
AUTO TRANSMISSION
25
3650
100
KYRON SM - 2005.09