PT Journal AU Bigos, P Puskar, M TI Increasing of Power Output of Racing Motorcycle Engine using of Exhaust System Optimisation SO Acta Mechanica Slovaca PY 2011 BP 70 EP 77 VL 15 IS 1 DI 10.21496/ams.2011.010 DE Temperature of Exhaust System; Engine Output Performance AB An exhaust gas system of a two-stroke piston combustion engine has a significant impact on its maximal power output and speed characteristics. In the first part of this paper there is described an impact of the exhaust gas pipeline system on the output speed characteristics. In the second part is analysed a relation between temperature of exhaust gases and speed characteristics, as well as there is determined an optimal temperature for achievement of the best output characteristics. Results presented in this paper enable to optimise curve of the speed characteristics for application in various kinds of single-track vehicles. ER