TY JOUR TI MATHEMATICAL MODEL FOR DETERMINING OPERATIONAL PARAMETERS OF POWER PLANTS OF MOBILE MACHINES AT UNSTEADY OPERATION MODES KW unsteady load KW quasi-dynamic characteristics KW dynamic performance KW the mathematical model. JO Vestnik of Kazan State Agrarian University AU Medvedev, V.M. AU Khaliullin , F.. AU Shiriyazdanov , R.. PY 2015 IS 10 PB Kazan state agrarian University