RU108489U1 - SYSTEM OF LIQUID COOLING OF THE INTERNAL COMBUSTION ENGINE AND HEATING OF THE VEHICLE OF THE VEHICLE (OPTIONS) - Google Patents

Abstract

 1. The liquid cooling system of the internal combustion engine and heating the vehicle interior, comprising cooling jackets for the cylinder block and the head of the engine block, a unit for circulating coolant in the system, made in the form of an independent liquid electric pump, a device for shutting off and distributing coolant in the main and bypass circuits, radiator-fan unit with electric fans, expansion tank, liquid-air heater, liquid-oil heat exchangers of the engine, gearbox and vehicle systems, an independent liquid heater-heater, the circuit of which includes a non-return valve, coolant temperature sensors, connecting pipelines, characterized in that the cooling system is additionally equipped with an emergency electromechanical controller that blocks the flow of fluid from engine into the radiator. ! 2. The liquid cooling system of the internal combustion engine and heating of the vehicle interior, comprising cooling jackets for the cylinder block and the head of the engine block, a unit for circulating coolant in the system, made in the form of two independent liquid electric pumps operating independently of each other, a device for closing and distribution of coolant along the main and bypass circuits, radiator-fan unit with electric fans, expansion expansion tank to; liquid-air heater of the cabin, liquid-oil heat exchangers of the engine, gearbox and systems av

Description

The utility model relates to the field of transport engineering and can be used in liquid cooling systems of an internal combustion engine and interior heating on vehicles of all categories and designs.

Known is a combined system of automatic control and regulation of the thermal regime of an internal combustion engine, including a cylinder block and cylinder head with a cooling jacket, a fan with an adjusting clutch, a liquid pump with a mechanical drive, a two-valve thermostat connecting the cooling cavities of the engine or with a radiator (main circuit cooling system) or with bypass channel (bypass circuit). The system is additionally equipped with a gas-liquid heat exchanger of exhaust gases, a two-section liquid heat exchanger, a cooling section of the heat exchanger and a liquid section for heat recovery of the exhaust gases with the formation of an additional coolant circulation circle in which a liquid pump with electric drive is installed (RF patent No. 2109148, F01P 7/16) .

Such a system cannot ensure proper thermal conditions of the engine in extreme road conditions.

The closest in technical essence and the achieved result to the proposed technical solution is a liquid cooling system of an internal combustion engine and heating the vehicle interior (RU 78733 U1, 10.12.2008). The system contains cooling jackets for the cylinder block and the head of the engine block, a unit for circulating coolant in the system, a device for shutting off and distributing coolant along the main and bypass circuits, a radiator-fan unit with electric fans, a compensation expansion tank, a bypass line, and a heater radiator , liquid-oil heat exchanger, independent heater-heater, in the liquid circuit of which a non-return valve is included, temperature sensors are cooling fluid, connecting pipes. An autonomous, glandless and collector-free liquid electric pump was used as a unit for circulating coolant in the system, and a device for distributing coolant flows was made in the form of a ball valve driven by an electric motor and controlled by temperature sensors located in the most heat-stressed areas of the engine head .

The system is made in two versions: single-circuit (with one electric pump) and double-circuit (with two electric pumps).

However, this system has a significant drawback inherent in all liquid cooling systems of the engine, which consists in the fact that in case of mechanical damage to the radiator, the entire cooling system is depressurized. The loss of coolant in this case will lead to an emergency stop of the engine and the impossibility of further functioning (use) of the entire vehicle. Under extreme climatic and other external adverse conditions, this will lead to a threat to the life support of the driver and passengers (for example, during military operations).

The technical result of the claimed utility model is to enable the vehicle to move with a partial engine load in case of damage to the radiator of the cooling system using the discharge of heat generated by the engine through the heating system.

The technical result is achieved in two versions of the liquid cooling system of the internal combustion engine and the heating of the vehicle interior:

- with one electric motor pump (single-circuit), providing a sequential flow of coolant through the cavity of the cylinder block into the cavity of the head of the block;

- with two electric pumps of the engine (double-circuit), when one electric pump delivers coolant into the cavity of the cylinder block, and the other into the cavity of the head of the block.

Option 1.

The liquid cooling system of the internal combustion engine and heating of the vehicle interior includes cooling jackets for the cylinder block and the head of the engine block, a unit for circulating coolant in the system, made in the form of an independent liquid electric pump, a device for shutting off and distributing coolant along the main and bypass circuits, radiator-fan unit with electric fans, expansion tank, liquid-air heater, liquid ostno-oil heat exchangers engine, gearbox and vehicle systems, independent liquid in the heater-heating circuit of which includes a check valve, coolant temperature sensors, connecting lines. In addition, the cooling system is equipped with an emergency electromechanical controller that blocks the flow of fluid from the engine to the radiator

Option 2

The liquid cooling system of the internal combustion engine and the heating of the passenger compartment of the vehicle comprises cooling jackets for the cylinder block and the head of the engine block, a unit for circulating the coolant in the system, made in the form of two independent liquid electric electric pumps operating independently of each other, a device for shutting off and distribution of coolant along the main and bypass circuits, radiator-fan unit with electric fans, expansion-expansion body tank; liquid-air heater of the cabin, liquid-oil heat exchangers of the engine, gearbox and vehicle systems; an independent liquid heater-heater in the circuit of which a check valve is included; coolant temperature sensors, connecting pipes. Additionally, the cooling system is equipped with three emergency electromechanical regulators that block the flow of fluid from the engine to the radiator. The essence of the utility model is as follows. The use of an emergency fluid flow regulator with the simultaneous closure of the main electromechanical regulator installed at the radiator outlet, in case of mechanical damage and loss of tightness, allows the main radiator to be completely disconnected from the cooling system and to provide the possibility of engine operation using bypass circuits when the car is moving with a partial load when taking off engine heat through the heating system. In this case, the liquid circulation in the cooling system is carried out by an independent liquid electric pump, the bypass circuit of which includes the cooling jackets of the block and the engine head, the radiator of the heating system, heat exchangers for cooling the engine oil, gearbox, power steering, air compressor and an independent liquid heater.

As an emergency regulator that blocks the flow of fluid from the engine to the radiator, an electromechanical (or mechanical) shut-off valve (tap) with remote or mechanical control can be used.

Figure 1 shows the hydraulic circuit of the inventive single-circuit liquid cooling system of an internal combustion engine and interior heating. The inventive system includes: a compensation tank (1), a liquid-air heat exchanger (radiator) (2), an electric fan assembly (3), an electromechanical regulator of fluid flow through a cooling system (4), an emergency electromechanical or mechanical regulator for shutting off the fluid flow from the engine to the radiator (4a), expansion tank (5), independent electric liquid pump (6), switchgears (7), heat exchanger for heating the fuel-air mixture or air (8), internal combustion engine ia (9), air compressor (10), heat exchangers for cooling engine oil, hydromechanical gearbox and power steering (11), non-return valve (12), electric heater pump (13), heater tap (14), liquid heater (15) , heater radiator (16), battery heat exchanger (17).

The small circulation circle (bypass circuit) consists of: an independent electric liquid pump (6), cooling jackets for the block and the engine head, a check valve for the heater circuit (12), an activated heater radiator (16), liquid-oil heat exchangers (11), and liquid-air heat exchangers, expansion tank (5). Such a bypass circuit provides quick engine warming while heating the cab and accelerating oil heating in the engine, gearbox, power steering circuits.

The vapor-air mixture is removed by dumping it into the expansion tank from the front and rear head of the unit, from the upper radiator inlet tank and from the heater and heater circuits. If air and steam are taken directly from the radiator of the front and rear of the unit directly to the expansion tank, then from other parts of the system the steam-air mixture first flows into the cavity of the check valve of the heater circuit, and then into the expansion tank.

The proposed device operates as follows.

In case of loss of coolant in the engine cooling system associated with mechanical damage to the radiator or loss of tightness of the connecting hoses, the emergency electromechanical valve (4a) is shut off while the electromechanical fluid flow regulator is closed through the cooling system (4). The cooling system, if necessary, is filled with coolant or water, the heater valve opens. When the engine is running, all coolant circulates through an independent electric pump along the bypass circuit, which consists of cooling jackets for the block and cylinder heads, heater check valve, heater radiator, heat exchangers for cooling the engine oil, automatic transmission and power steering, expansion tank.

Heat is removed from the engine cooling system through the heating system. At the maximum possible flow rate of the liquid provided by an independent electric pump of the engine, and the highest revolutions of the heater electric fan, the heat dissipation ability of the latter is able to provide movement of the vehicle when the engine is running at low loads.

The cooling and heating systems according to the proposed technical solution ensure the normal functioning of an independent heater and maintain the necessary thermal condition of the engine and the cab of the vehicle.

Figure 2 shows the hydraulic circuit of the inventive dual-circuit liquid cooling system of an internal combustion engine and interior heating. The system includes the same components and assemblies as the system according to option 1, and its difference is that it has two liquid pumps that operate independently of each other: an electric pump for the engine block (6B) and an electric pump for the head of the engine block (6G) as well as three emergency electromechanical or mechanical regulators for blocking the flow of fluid from the engine to the radiator (4a), which allow the engine to operate in an emergency according to option 1.

This embodiment of the system provides better temperature equalization of the parts of the head and engine block and elimination of the fluid joint between them.

Claims (2)

1. The liquid cooling system of the internal combustion engine and heating the vehicle interior, comprising cooling jackets for the cylinder block and the head of the engine block, a unit for circulating coolant in the system, made in the form of an independent liquid electric pump, a device for shutting off and distributing coolant in the main and bypass circuits, radiator-fan unit with electric fans, expansion tank, liquid-air heater, liquid-oil heat exchangers of the engine, gearbox and vehicle systems, an independent liquid heater-heater, the circuit of which includes a non-return valve, coolant temperature sensors, connecting pipelines, characterized in that the cooling system is additionally equipped with an emergency electromechanical controller that blocks the flow of fluid from engine into the radiator. 2. The liquid cooling system of the internal combustion engine and heating of the vehicle interior, comprising cooling jackets for the cylinder block and the head of the engine block, a unit for circulating coolant in the system, made in the form of two independent liquid electric pumps operating independently of each other, a device for closing and distribution of coolant along the main and bypass circuits, radiator-fan unit with electric fans, expansion expansion tank to; liquid-air heater of the cabin, liquid-oil heat exchangers of the engine, gearbox and vehicle systems; an independent liquid heater-heater, the circuit of which includes a non-return valve, coolant temperature sensors, connecting pipelines, characterized in that the cooling system is additionally equipped with three emergency electromechanical regulators that block the flow of fluid from the engine to the radiator.