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LUK CLUTCH SYSTEMS
 
 
Historically, the core business of LuK – what many people do not know is that this abbreviation stands for “Lamellen und Kupplungsbau”, in English disc and clutch makers - is clutches, the associated systems and the dampers in the power train.

 LuK’s rise to success started with the standard production of the diaphragm spring clutch. Today, the range spans much more: Besides developments in the self-adjusting clutch (SAC), the term clutch systems also comprises the complex “clutch and actuation” operation and the disengaging system.
 
LUK DUAL MASS FLYWHEEL (DMF)
 
In addition to engaging and disengaging, it must effectively insulate the engine’s vibrations. Physically, this is easy to solve: The mass moment of inertia of the transmission must be increased without increasing the mass to be shifted. This dampens the engine’s torsional vibrations and brings about the desired comfort level. The process reduces load on the transmission at the same time.

LuK was the first manufacturer in Europe to develop and sell a dual-mass flywheel in large-scale standard production that was able to realize this physical principle. The name says it all: The mass of the conventional flywheel was simply split in two. One part continues to belong to the engine’s mass moment of inertia, while the other part now increases the mass moment of inertia of the transmission. 

The two decoupled masses are linked by a spring/damping system. One clutch disc, without a torsion damper, between the secondary mass and the transmission handles the engaging and disengaging functions. A favorable side effect is that the transmission is easier to shift because of the low mass to be synchronized, and there is less synchronization wear.
 
LUK CLUTCH DISCS
 
The clutch disc is the clutch’s central connection element.
In combination with the clutch pressure plate, it both separates and links engine and powertrain. It also reduces the speed fluctuations in the gearbox caused by the combustion motor. 

LuK offers the best solutions for every application, from clutch discs with simple torsion damper through to variants with multi-stage dampers, from rigid clutch discs for use in the dual mass flywheel right through to the displacement correction clutch disc.
 
LUK CLUTCH PRESSURE PLATE
 
Together with flywheel and friction disc, the clutch pressure plate forms a friction system and is mounted to the flywheel by bolts in the housing. The pressure plate ensures that the engine torque is transferred via the friction disc to the transmission intake shaft. In the 70’s, the diaphragm spring clutch has consistently eliminated bolt springs from the passenger car.
 
DIAPHRAGM CLUTCH
 
Combustion engines have a problem: They provide a usable output only in a very specific speed range – just the opposite to electric or steam engines. This means that speed, transferable engine output and gearbox must be optimally synchronised in various drive conditions – this function is provided by the clutch. 

The clutch separates or connects powertrain from and to the gearbox, which every driver knows from his own experience. When the clutch pedal is depressed, this powertrain is interrupted and a different gear can be engaged. The clutch also enables cars, trucks and other utility vehicles to accelerate away smoothly and without engine bucking.
 
 
SAC1
 
Since clutches are subject to wear during use in the vehicle, LuK, as the first clutch manufacturer, put a great deal of effort into developing a type of wear compensation system for the clutch, and put it in production in 1995. The self-adjusting clutch SAC uses a load sensor (sensor-diaphragm spring) to activate its wear compensation by turning a ramp ring. 

This compensation mechanism has made it possible to decrease operating loads. The compensation for the clutch wear has also made it possible to increase the clutch service life by about 1.5 times without any significant change in the operating load over the service life.
 
 
SKF SKF AUTOMOTIVE BOSCH REXROTH
REMSA MULLER FILTERS DAYCO
DONALDSON OPTIBELT PERKINS
VALEO DENSO AVA
MAGNETI MARELLI NRF AUTOGAMMA
CORTECO STC OPEN PARTS
RACOR OCAP EUROLITES
FILTRON AHE OSRAM
FAG STM MONROE
DEUTZ STABILUS BEHR
REPSOL LUK INA
  
 
  
 


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