SU1216387A1 - Cooling system of internal combustion engine - Google Patents

Description

The invention relates to the field of mechanical engineering, in particular to internal combustion engines, and can be used in the drive of a supercharger in an engine cooling system.

The aim of the invention is to improve the efficiency by races, from the point of view of the frequency control range of the fan.

The drawing shows the system ohlazkdeni, General view.

The engine cooling system of the internal combustion engine contains a closed circulation loop in communication with the expansion tank and a radiator coupling (not shown), fitted with a top tank, with an engine jacket (not shown) through a centrifugal pump.

The hydrodynamic drive of the fan is located in the same housing with the centrifugal pump of the engine, being a combination of the impeller 1 of the centrifugal pump of the impeller wheel 2 hydraulic couplings, the turbine wheel 3 hydraulic couplings and the outer housing 4, and a hollow shaft 5, on which the water pump pulley 6 is simultaneously attached. The turbine wheel 3 of the hydraulic clutch is connected to the lead of the shaft 7, passing inside the hollow shaft 5. On the shaft 7 is fixed the fan 8 of the fan. The fluid filling of the fluid coupling cavity occurs from the ohlalodekn system through a thermostatic valve 9, pipe 10 and pipe 11,

The housing 12 of the pump is divided into the cavity 13 of the fluid coupling and the cavity 14 of the pump and is provided with an inlet 15 and an outlet of the pump. Between the cavity - mn body is installed seal - partition 16, made of fluoroplastic. The bypass tube 17 is connected at one end to the drain1- {at the channel 18, made in the lower part of the cavity 13 of the fluid coupling, and the other - to the through hole 19, made in the side wall of the pump inlet 15. The drainage pipe 20 is connected at one end to the drainage channel 21, which is made in the upper part of the cavity 13 of the hydraulic coupling, and the other - to the circulation circuit. Drain pipe can

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be connected to the circulation system through the upper radiator tank or through the expansion tank.

When starting the engine, rotation from the crankshaft through the belt 22. and the pulley 6 is transmitted to the hollow shaft 5, on which the water pump's horn 1, the pumping wheel 2 of the hydraulic clutch and the casing 4, are fixed,

located in the working cavity of the fluid coupling, is rotated by the pump wheel 2 and rotates the turbine wheel 3. With the thermostatic valve 9 closed, as the engine crankshaft rotation frequency increases, the water pump impeller increases. The vacuum in the water intake channel 15 increases . Liquid

under the action of this vacuum, the by-pass tube 17 is removed from the cavity 13 of the fluid coupling. Under the action of centrifugal seed through a hole of 01.5 mm in the periphery of the casing

fluid is removed from the working cavity of the fluid coupling. The turbine wheel 3 of the hydraulic clutch stops smoothly, the fan stops smoothly, respectively

When the coolant temperature rises, an optimal thermostatic valve 9 installed in the pipe between the engine head and the water radiator opens this fluid into the working cavity of the hydraulic clutch through pipe 10, pipe 11. The liquid of the hydraulic wheel 2 rotates the hydraulic clutch

rotating the turbine wheel 3, thereby rotating the fan.

When the coolant temperature drops below the optimal temperature, the thermostatic valve 9 closes the fluid access to the working cavity of the hydraulic clutch and the process of sinking is repeated, resulting in a decrease in the rotational speed of the fan.

In order to prevent the formation of a vacuum in the cavity 13, which prevents the removal of liquid, the upper part of this cavity is connected by a drainage pipe 20 to an expansion tank or top water radiator,

31216387

In order for the fluid from Padromufta between them to be installed, the pumping cavity 14 of the water surface bore the sealing barrier did not flow into the cavity 13 ka -16.

21

ft

Claims (5)

1. COOLING SYSTEM OF THE INTERNAL COMBUSTION ENGINE, containing a closed circulation circuit, connected to the expansion tank and connecting the radiator, equipped with an upper tank, to the engine jacket through a centrifugal pump, the housing of which is divided into a hydraulic coupling cavity and a pump cavity and is equipped with an inlet and outlet pump the fact that, in order to increase efficiency by expanding the range of regulation of the fan speed, the system is equipped with a bypass tube, and between the cavity a sealing baffle is inserted, a drain channel is made in the lower part of the fluid coupling cavity, and a through hole is provided in the side wall of the pump inlet and the bypass pipe is connected at one end to the drain channel of the hydraulic coupling cavity and the other to the pump inlet opening. 2. The system according to claim 1, characterized in that it is additionally provided with a drainage pipe, and a drainage channel is made in the upper part of the fluid coupling cavity, the drainage pipe being connected at one end to the drainage channel of the fluid coupling cavity and the p to the circulation circuit with the other. © 3. The system according to claim 2, characterized in that the drain pipe is connected to the circulation circuit through the upper radiator tank. 4. The system according to claim 2, characterized in that the drainage pipe is connected to the circulation circuit through the expansion tank. '5. The system according to claim 1, characterized in that the sealing partition installed between the body cavities is made of fluoroplastic. SU, 1216387