Analysis of The Effect of Different Gearbox/Transmission Types on Driveline Friction Losses by Means of Gt Suite Simulation Programme

Selection of transmission systems motor vehicles used on highways is high-ly important in terms fuel consumption and vehicle efficiency. In this study, effect using 3 different gearboxes a passenger car (automatic gearbox, CVT gearbox manuel gearbox) driveline friction losses engine operation interval by means GT SUITE modelling programme. The model formed has been simulated driving cycles (WLTP, HFET US06) system have compared. WLTP cycle which speed changes average are low, frictions resulting from the load constitute significant part total frictions; other hand, mode aggressive high, re-sulting lubricant sealing elements frictions. Gearbox related clutch mechanism selection changed opera-tion during cycle.