TY JOUR TI TEST CONTROL OF FUEL PUMPS OF MODERN AUTOTRACTOR EQUIPMENT KW fuel system KW electric pump KW current strength KW current speed KW pump power KW hydraulic losses KW energy balance JO Vestnik of Kazan State Agrarian University AU Gricenko, A.V. AU Gavrilov, K.V. AU Gimaltdinov, I.H. AU Bityukov, M.V. PY 2024 IS 19 PB Kazan state agrarian University