Теоретические исследования параметров электронагревательного устройства с саморегулированием мощности

The principle of posistors work in the device for electro-heating of motor oil is given and mathematical model of non-stationary process of motor oil heating in KAMAZ engine oil sump is suggested. The problem of increasing efficiency of using posistors is theoretically grounded. Theoretical research of parameters of device for electro-heating of motor oil with self-regulated power is conducted and rational square of convective heat transfer of device surface is determined.