SU244000A1 - MAINTAINING INTERNAL COMBUSTION ENGINE IN HEATED STATE - Google Patents

Description

Devices are known for supporting an internal combustion engine in a heated state, comprising systems for heating water in a reservoir with an electric heater and oil in an autonomous circuit, equipped with suitable circulation pumps.

The proposed device differs from the known ones in that the reservoir is made in the form of an expansion tank of the engine cooling system, and at the outlet of the water pump is installed a water heat exchanger connected through water through adjustable throttles to the engine and the expansion tank, and in oil to the pump and oil sump engine Such device performance increases the reliability of its operation and increases the life of the oil.

The drawing shows a diagram of the proposed device.

The device consists of an electric heater U placed in an expansion tank 2 of the water cooling system of the engine 3, a water circulation electric pump 4 connected to the pipeline 5 connecting the expansion tank and heat exchanger 6, an oil circulation electric pump 7 connected to the pipeline 8, connecting oil sump 9 (wet crankcase, oil tank) engine with a heat exchanger, throttle body 10 on the pipeline //, throttle body 12 on the pipeline 13, non-return valve 14 on the pipeline 15 and temperatures relays 16, the receivers of which are placed in the engine oil pan.

The device works as follows.

When cooling the oil in the sump 9

engine 3 to lower temperature limit

heating, temperature relays 16 impulse to turn on the electric heater / in the expansion tank 2, the water pump 4 and the oil pump 7. The water heated in the expansion tank is supplied by a water electric pump through pipeline 5 to the heat exchanger 6, and

from it partially through the throttle body 12 through the pipeline J3 to the expansion tank and partially through the throttle body 10 through the pipelines 11 W. 15 to the internal engine cooling system to warm it up. Of

the engine water through the pipeline 17 through the water cooler 18 of the cooling system and through the pipeline 19 is returned to the expansion tank. At the same time, the pressure of water on the non-return valve 14 from the side of the pipeline 11 is greater than that from the side of the pipeline 19, since the water cavities of the internal system of the engine and the water cooler 18 resist the passage of water. Therefore, water cannot enter the pipeline.

when the engine is not running, the chiller is automatically shut off and the water in it does not cool further when the engine is warming up.

The throttle bodies 10 and 12 are used to adjust the operation of the device in connection with various pipe resistances and to equalize the intensity of heating the oil and engine 3 with hot water. The oil pump 7 receives the oil from the oil pan 9 of the engine, delivers oil to the heat exchanger 6 through line 8, and then returns heated oil through the pipe 20 to the oil canister. When the upper limit temperature of the oil in the oil sump is reached, the temperature relays 16 pulse the electric heater 1, the electric water pump 4 and the electric oil pump 7 off. Since the water level in the expansion tank is automatically maintained by the refill system, the electric heater is always in water, which ensures its reliability and durability.

When the engine is running, the device does not interfere with the normal operation of the cooling and lubrication systems. At the same time, water cooling system is fed through pipelines 11 and 19, and non-return valve 14 does not prevent water from passing through the water cooler 18 through pipe 15 to the engine 3.

Subject invention

A device for maintaining an internal combustion engine in a heated state, comprising systems for heating water in a tank with an electric heater and oil in an autonomous circuit, equipped with appropriate circulation pumps, characterized in that, in order to increase the reliability of operation and increase the service life of the oil, the tank is made in the form of an expansion tank of the engine cooling system, and at the outlet of the water pump there is a water-oil heat exchanger connected through water through adjustable throttles to the engine to the tailor and the bulging tank, and

oil - to the pump and the oil pan of the engine.

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