The heating system of an internal combustion engine

 

(57) Abstract:

The inventive lower level of the heat accumulator 8 is located below the upper level of the upper tank 4 of the radiator 2, the discharge pipe 12 is connected to the lower part of the pipe 3, the upper part of which is communicated with the upper part of the compensation tank 13, is additionally connected to the cavities of the cooling, and the pump 10 is installed in the supply line 9. 1 Il.

The invention relates to mechanical engineering, in particular the engine, namely, devices for heating internal combustion engines (ice) and can be applied, for example, for excavators.

Known systems of heating, which are used in boiler thermoelectrochemical element, piping connection for the cooling system of internal combustion engine, thermal switch, the compensation tank to put coolant in its expansion and devices-control of heating systems [1]

The disadvantage of this system is the need of the source of the power of electricity, which leads to the complexity of the design of systems.

A known heating system containing a heat accumulator with a gas and liquid channels and teploemkostei with the cooling jacket of the engine and the expansion tank through the valve [2]

The disadvantage of this system is the increase in heat loss when heated by circulating coolant through the radiator, the increase in the coolant system due to the complete Bay of the fluid channels of the heat accumulator and the cooling system of the internal combustion engine and the complexity of the design due to the presence in the liquid piping valves.

The purpose of the invention is the reduction of heat losses in the heating and coolant, as well as simplifying the design of the system.

This goal is achieved by the fact that the heat accumulator is located so that its lower level is not below the upper level of the radiator, and the compensation tank is communicated with the output liquid pipe heat accumulator through the stopcock.

Scheme of the proposed system is shown in the drawing.

The internal combustion engine 1 includes a heat sink 2, the pipe 3 with the upper and lower parts, which reports between a cavity cooling of internal combustion engine 1 and the upper tank 4 of the radiator 2. The tray 5 comprises a heat exchanger 6 for heating oil. The heat exchanger 6 is connected to the cavity cooling of internal combustion engine 1 through the pipe 7 and the heat accumulator 8 through the supply line 9 and the pump 10. At the bottom toching is not below the upper level of the top of unit 4 of the radiator 2. The discharge pipe 12 of the battery 8 is communicated with the lower part of the pipe 3 and the compensating tank 13 through a check valve 14. The tank 13 is connected with the upper part of the pipe 3 pipe 15, with the atmosphere through the opening 16 and cavity cooling of internal combustion engine 1 by the pipe 17. The cooling system of internal combustion engine filled with cooling fluid, such as antifreeze. Fluid volume compensating tank 13 is approximately equal to the volume of the fluid channels (not shown) of the heat accumulator 8 minus the volume of the tank 4 of the radiator 2. Free volume tank 13 corresponds to the increase in the volume of coolant due to thermal expansion during operation of internal combustion engine 1.

Heat accumulator 8 is a casing with thermal insulation, such as mineral wool. Inside the body is placed in the gas and liquid channels (not shown). Between channels is heat-retaining material, for example metal counterweight excavator. In parallel with the battery 8 to the exhaust material 18 is connected to the muffler 19. To control the flow of exhaust gases is set flaps 20 and 21. The valve 11 is designed for emergency drain coolant.

The heating system works as follows.

When operating the internal combustion engine 1 in the installation the Fluid from the fluid channels of the heat accumulator 8 by gravity through the supply line 9 and the Central pump 10, who turned off, drained the cooling system. Exhaust gases from the internal combustion engine 1 passes through the gas channels of the heat accumulator 8, the heated heat storage material and released into the atmosphere. When the valve 20 is closed and valve 21 is opened.

During misonnei Parking heat energy from the exhaust gases is stored in the battery 8 due to the presence of insulation.

If necessary, pre-heating combustion engine 1 via a pump 10, the fluid enters the fluid channels of the heat accumulator 8, heated and served in the lower part of the pipe 3. During the filling of the fluid channels of the battery 8, the liquid level in the system is reduced to approximately the bottom of the tank 4. Thus preventing the circulation of heated fluid through the radiator 2. This liquid filling of the channels of the battery 8 is supplied from the compensating tank 13 and the tank 4.

On completion of filling of the fluid channels of the heat accumulator 8 and the pipe 12, the valve 14 is closed and the fluid begins to circulate in a closed circuit: the heat accumulator 8 cavity cooling of internal combustion engine 1, the heat exchanger 6 of the pallet 5, the pump 10 through the pipes 9 and 12. The lowering of the liquid level in systems which which enters the air in the pipe 4 and the tank 4 when the lowering of the liquid level.

When closed, the valve 14 may be both forced and thermosiphon circulation of the coolant when the heat engine, as there is no air in the pipe 12 and, therefore, excluded draining of the heat accumulator 8 by gravity, and the pumping cavity of the centrifugal pump 10 is not a barrier to free passage through it of the liquid when the pump 10.

After warming up the internal combustion engine 1, the valve 14 is opened, the air from the tank 13 is fed into the pipeline 12, and the fluid from the heat accumulator 8 through the pipe 9 is discharged into the cooling system. At the same time filled the compensation tank 13 and the tank 4.

The proposed heating system of the internal combustion engine can reduce heat loss to the environment when warming up the internal combustion engine by eliminating the circulation of heated fluid through the radiator of the cooling system, to reduce the liquid volume of the system due to use for filling the fluid channels of the heat accumulator antifreeze from the upper tank of the radiator and to simplify the design of the overall system by eliminating piping, suitable for thermal battery valves.

The HEATING SYSTEM of the ENGINE INTERNAL line of the engine, and liquid channels connected via inlet and outlet pipes with the engine cooling system having a radiator top tank connected to the cooling cavities of the engine using a socket with the upper and lower parts, compensation tank, is connected through a check valve to the discharge pipe and the pump, characterized in that, in order to reduce thermal losses and the volume of coolant and simplify the design, the lower level of thermal battery is not below the upper level of the upper tank of the radiator, and a discharge pipe connected to the bottom of the pipe, the upper part of which is communicated with the upper part of the compensation tank, additionally connected to the cavities of the cooling, and the pump is installed in the supply line.

 

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