CONSTRUCTION OF MATHEMATICAL MODELS FOR CALCULATION OF THERMAL MODES OF TRANSMISSION UNITS
The results of theoretical studies on heat exchange in the process of mobile farm machinery and tractors operation, using mathematical instruments, are submitted in the article. As result of analysis of the heat transfer equation and on account of the specific character of heat exchange of transmission units with the environment, there were obtained the basic generalizing dependences. The latter describe the thermal modes of transmission assemblies, taking into account the heat transfer by the oil, moving through the channels of the lubrication system, and heat dissipation from the components through the machine crankcase and the components contacting with it, into the environment. The analytical formulas describing the thermal conditions of the power units, which allow the designing and calculation of the elements of transmission, have been developed.