TY JOUR TI METHOD OF THERMODYNAMIC DIAGNOSTICS FOR SOLID HYDRAULIC MACHINES OF CONSTRUCTION EXCAVATORS KW thermodynamic method KW temperature KW efficiency KW pump KW balance JO Transport engineering AU Emel'yanov, R.T. AU Potapov, A.E. AU Olenev, I.B. AU Turysheva, E.S. AU Nekrasov, I.O. PY 2026 IS 2026 PB Bryansk State Technical University