Technical Paper
Application of Fluid Transport Phenomenon to Transmission Band Friction Material
1992-09-01
922098
A number of papers published in the past several years (1, 2, 3) have sought to quantify transmission band performance parameters. Most recently researchers have explored the effects of temperature and lubrication levels, and correlation of these factors with vehicle testing (4). For the most part, these papers have focused on optimization of existing band and drum systems, and have assumed that the contribution of friction material to overall system performance remains constant. Historically, most research concerning friction material performance has focused strictly on energy level per unit of surface area. One recent research effort (5) has found that the speed and inertia components of shift energy are at least as important as the energy itself. In either case, friction coefficients have been assumed constant for a given energy level, while variations in the speed and inertia components of that energy level have not been emphasized.