COOLING SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 2006 - IPC F01P5/10 B60K11/02 

FIELD: transport engineering; locomotives and other vehicles.

SUBSTANCE: proposed cooling system of internal combustion engine has hot and cold cooling liquid circulation circuits, oil cooling circuit, expansion tank with make-up pipes and pop-off vents of hot and cold circuits, respectively, at least one fan, engine coolant temperature regulation and control system, hot circuit including engine cooling space, first circulating pump and first radiator, cold circuit including oil cooler and supercharging air cooler, second circulating pump and second radiator. Hot and cold circulation circuits are interconnected by two main lines first of which is connected by one end hot circuit between engine and first radiator, and by other end, to suction branch pipe of second circulating pump, and second main line is connected by one end to outlet branch pipe of second radiator and by other end, to suction branch pipe of first circulating pump. Oil cooling circuit includes oil pump, engine oil channels cooler oil cooling channels and its inlet main line with thermoregulator and outlet branch pipe, bypass main line connected by one end to thermoregulator and by other end, to outlet branch pipe of oil cooler. System is provided with regulator connected to first intercircuit main line to regulate flow of liquid from hot circuit into cold circuit and thus maintain temperature in cold circuit at preset level, partition installed in expansion tank dividing it into two spaces for hot and cold circuits, respectively, with connected make-up pipes and pop-off vents, third intercircuit main line with thermostat connected by one end to hot circuit, between engine and first radiator and by other end, to suction tranch pipe of second circulating pump to control liquid flow from hot circuit into cold one and prevent exceeding maximum tolerable liquid temperature level of hot circuit at engine outlet. Regulator has variable flow section for all-weather use or is made with constant flow section for seasonal use.

EFFECT: increased efficiency of engine operation by control of temperatures of all heat carriers and maintaining them at preset level.

2 cl, 1 dwg