COOLING SYSTEM OF INTERNAL COMBUSTION ENGINE WITH ELECTRICALLY DRIVEN ADJUSTABLE FAN Russian patent published in 2021 - IPC F01P5/10 F01P7/14 F01P3/18 

FIELD: engine building; cooling.

SUBSTANCE: invention refers to the cooling system of internal combustion engine. Cooling system of internal combustion engine with electrically driven adjustable fan, comprising liquid radiator tubular-plate type, radiator flap, fan, electric fan drive, thermostat, liquid electrically driven pump, oil cooler, electronic control unit, crankshaft speed sensors, fan rotation speed, coolant temperature of cooling system, active louvers position, fan is installed in front of radiator in diffuser of elongated shape with possibility of reverse rotation and movement along axis of electric drive shaft in diffuser, and synchronous rotation of blades by value of up to 45° for forced circulation of air masses through air path with subsequent blasting of surface of engine crankcase; the thermostat additionally comprises an active main valve, electric drive for stepless control of active main valve position with coolant temperature not lower than 105 °C; additionally installed are position sensors of fan and active main valve of thermostat, coolant flow rate of cooling system, oil temperature and pressure, wherein electric fan drive is controlled by control unit based on signals of crankshaft speed sensors, rotation speed and position of fan, temperature and flow rate of coolant of cooling system, oil temperature and pressure, thermostat active main valve position and active louvres, and the oil radiator is made in the form of a shell-and-tube type oil-and-gas heat exchanger with a round bundle brass tube core and is built into the internal combustion engine crankcase with possibility of oil cooling to the temperature of not lower than 109 °C by means of the cooling liquid of the cooling system.

EFFECT: invention provides a stable heat mode of the internal combustion engine and optimization of its operating mode with variable load nature, high-temperature cooling, rational and energy-efficient power distribution, spent on drive of fan and liquid pump.

1 cl, 1 dwg