Methods for improved power transmission performance

摘要

Advanced methods are provided for achieving improved power transmission performance, and unique fluid compositions useful for practicing such methods are also presented. In particular a method is provided for reducing NVH in a power transmission apparatus having a friction torque transfer apparatus, such as, e.g., a shifting clutch, comprising maintaining a negative ∂µ/∂T slope, and/or a negative ∂µ/∂P slope, during engagement of the friction torque transfer apparatus.