LIQUID COOLING SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 2015 - IPC F01P3/20 F01P7/16 F01P11/00 

FIELD: machine building.

SUBSTANCE: liquid cooling system of internal combustion engine of closed type includes centrifugal pump (1) with input cavity (12) for the impeller, radiator (2), thermostat box (3) with thermostats, oil cooler (6), internal combustion engine block comprising right (5) and left (4) rows of cylinders. Casing of liquid channels is made as solid product, at its one side a thermostat box (3) is installed, and at another side a centrifugal pump (1) is installed. The thermostat box (3) has holes (13), (14) for cooling liquid supply from block of cylinders of the internal combustion engine, and hole (15) for the cooling liquid supply from oil cooler (6), besides there are holes (17), (18) for cooling liquid output in the radiator (2). The thermostat box (3) is connected directly with output headers of the cooling liquid of the engine cylinders block and removal channel of the oil cooler (6). Centrifugal pump (1) has two supply channels (channel (10) - from radiator to centrifugal pump (1) and channel (11) - from thermostat box (3) to centrifugal pump (1), made inside the casing of liquid channels) and three spiral removal channels, two channels (8), (9) supply the liquid to the engine cylinders block, and channel (7) - to oil cooler (6). Spiral removal channels (7), (8), (9) are located in one plane, at same angle between each other, and have equal output cross-sections. Channels (8) and (9) are connected with cavities of the right (5) and left (4) rows of cylinders of the engine block, and channel (7) - to supply channel of the oil cooler (6).

EFFECT: increased efficiency, economy, reliability, uniform cooling of the engine.

3 cl, 4 dwg