Valeoscope - Transmission Syst. Clutch KIT4P Conversion Kit

7.3 Efficient torque transfer KIT4P ensures 100% torque transfer, and during the design phase, the maximum engine torque is considered. In addition, Kit4P efficiency is vali- dated via benchmark tests and vehicle trials. KIT4P runs at optimized temperature boundaries, thus keeping the facing’s friction coefficient in good value for increasing torque transfer capacity. The graph below shows the friction coefficient as a function of temperature for different facings used in KIT4P. It is once again visible that the temperature range between 100ºC and 270ºC offers advantages in terms of a reduced friction coefficient.

7.4 Comfortable solution KIT4P filters vibrations and noise for essential dri- ving pleasure. The innovative long travel dam- per aids driver comfort and comes close to the damping performance characteristics of a D.M.F. KIT4P may allow increased disengagement comfort reducing the pedal load due to greater stiffness in the complete system, from diaphragm fingers to crankshaft. Depending on the application, KIT4P technology may allow increased clutch size. This increases the safety factor for torque transmission and also reduces the release bearing load, conse- quently reducing pedal load for clutch actuation. 7.5 Non-wear flywheel & Service Kit The rigid flywheel does not require replacement unless there is abnormal damage on the fric- tion surface or the starter ring. When the second clutch replacement is due, only the cover, the disc and the bearing need to be replaced. Valeo offers a complete range of Service Kits for vehi- cles equipped with KIT4P.

HILL START SIMULATION TEST Friction coefficients versus pressure plate (200 mm) mass temperature for different facing materials

0,5

0,45

0,4

0,35

0,3

VDA REQUIEREMENTS JF840 I0146-­‐01

MINIMUM FRICTION COEFICIENT

0,25

0,2

F830DS F820DS F810DS

0,15

0,1

50

100

150

200

250

300

350

400

450

TEMPERATURE (̊ C)

17