Reduction of Power Losses in Transmissions and Gearings
In modern motor vehicles, having a driveline that is optimally designed for each vehicle provides a substantial CO2 reduction. Different transmission systems such as, for example, manual transmissions, torque-converter transmissions, dual clutch transmissions and hybrid systems, work better with different requirements and vehicle classes. By increasing the number of gears and the transmission-ratio spread, the engine can run with more fuel efficiency without a loss of driving dynamics. The transmission efficiency itself can be improved by using fuel efficient transmission oil, optimizing the lubrication systems and pumps, improving shifting strategies and optimizing the friction characteristics of gearings, bearings and seals/gaskets .
Zeyong Yin, Chengyu Jiang, Datong Qin, Peixin Qiao and Geng Liu
F. J. Joachim et al., "Reduction of Power Losses in Transmissions and Gearings", Applied Mechanics and Materials, Vol. 86, pp. 883-888, 2011