Optimization of Friction Performance

Organic Based			Composite Based			Direct Deposit
SD1777 SD1798 Organic fiber Conventional technology	HyCarb® GYLON® Carbon/Kevlar filler content Machined to size Conventional technology		BW4329 BW4501 Carbon composite friction material High energy/low wear High mechanical strength	BW6100 Carbon composite friction material High temperature synthetic fibers High mechanical strength		Next Generation Deposit Carbon composite friction material Coated with friction modifiers/fillers on surface High mechanical strength

Advantages of BorgWarner friction materials for synchronizer applications

High level of friction coefficient		µdynamic 0.12 - 0.15, {material and oil dependant} (20-40% higher than conventional metallic linings)
Higher synchronization torque		Improved shift performance - reduced shift times
Quick rise in synchronization torque		High levels of initial µ, {including optimization of grooving pattern}
Dynamic/static ratio >1 (cone clutch)		Optimizes shift quality - reduced risk of "wring on"
Long life stability of frictional values		Generating no deterioration in shift quality during life