3-6
1
2 3 4
1
2 3 4
Engine speed
Input speed (turbine speed)
Stator
7609A3PT22
CONVERTER LOCK-UP CLUTCH
CONVERTER LOCK-UP CLUTCH (5-speed transmission)
2)
2)
7
9
5
6
8
1 Converter
lock-up
clutch
2 Turbine
wheel
3 Stator
4 Circuit
cover/pump
wheel
5 Proportional
valve
6
Measuring point "Lock-up clutch"
7 Cover
8
System pressure to lock-up clutch valve
9
System pressure from lock-up clutch valve
to
lock-up
clutch
With closed converter lock-up clutch the slip between pump and turbine wheel and consequently the
hydraulic loss in the converter is equal to "zero" (see figure A).
According to the turbine speed the converter lock-up clutch is shifted automatically.
Via a proportional valve the pilot pressure is applied to the actuating piston, which compresses the disc
set (see figure B, lock-up clutch valve).
7609A3PT23
Figure A
Figure B
Summary of Contents for HL955
Page 557: ...7 6 MEMORANDUM MEMORANDUM ...
