System to maintain optimum heat conditions of ice

FIELD: engines and pumps.

SUBSTANCE: proposed system incorporates extra heat pump. Heat pump evaporating heat exchanger is connected to gas discharge pipeline at waste gas heat power waste-heat exchanger outlet. Heat pump circuit is communicated via hydrolines with throttle and compressor inlet. Heat pump waste-heat exchanger is connected in cooling system heating circuit between the latter and heat storage of phase transition. Heat pump circuit is communicated via hydrolines with throttle and compressor outlet and throttle.

EFFECT: higher efficiency of cooling system.

1 dwg

 

The invention relates to the field of transport engineering, namely the engine and, in particular, to systems liquid-cooled internal combustion engines with means for preheating coolant, and heat accumulation of the exhaust gas at low temperatures, when the stabilizing optimal thermal regime in the whole range of operation.

It is known that the internal combustion engine (ice) has a small range of variation of the optimum coolant temperature from 85°C (nominal mode) up to 100°C (partial load) [internal combustion Engines. KN. Dynamics and design / edited Vinluan and Megatrav. - 2nd ed. - M.: Higher. HQ., 2005, s].

It is known that using different kinds of refrigerators, air conditioners and heat pumps (reverse cycles of heat engines, heat can be taken from cold bodies to send to the phone with a higher temperature [Heat: Textbook. For universities / Vinluan, Megatron, Gamer and others;. edit Vinluan. - 2nd ed., Rev.): the High. HQ., 2000. - C.195...206].

On most modern vehicles, the system engine cooling and heating of the cabin are structurally in the form of a single circulating circuit which salon is heated due to the heat of the Oh energy of the liquid coolant, heated in zarubica space of the engine. Due to the fact that on heating consumes a significant amount of thermal energy, the temperature of the coolant (coolant) in the cooling system of the engine in the winter of operation is much lower than the value recommended by the manufacturer. For example, studies [Study pre-heat the preparation of urban bus engines in winter operation, development and test system pre-heating of the engine of the bus with heat storage phase transition: a Report on research and development (No. 50517 - LD, ex. phase No. 2 / Vol, Geanakopolos, Sedgwick etc. - SPb.: The VIG, 2001, 39 C.] temperature of the coolant in the cooling system bus LiAZ-5256, equipped with a diesel engine KAMAZ-7408, at ambient temperature tOCD=-15...0°C was tW=45...58°C, and in accordance with the requirements of [the Bus LiAZ-5256: Manual / Likino bus plant - M.: Transport, 1991, 224. C.] the working temperature of the liquid in the engine cooling system must be equal to tslave=80...98°C.

Known cooling systems of internal combustion engines, operated most of the time in idle mode at low ambient temperatures [auth.the century N 756056, CL F01P 3/20, 1980].

The disadvantage of these devices is that the accumulation of heat in the heat accumulator is provided by heat from the engine coolant, which in conditions of low ambient temperatures and continuous operation at partial load is very problematic.

A known system for maintaining optimal thermal conditions of the internal combustion engine, containing a coolant liquid, including the cooling jacket of the engine, a circulation pump, a radiator and a temperature sensor, coolant, fan cooling the radiator and the heat accumulator is equipped with a tank with a heat storage substance and channels for the passage of coolant, oil and exhaust gases [U.S. Pat. 2134804 RF, F01P 3/20, F02N 17/02. Publ. 20.08.1999], as well as heating system bus, consisting of an internal combustion engine, heat accumulator phase transition (TAPP), radiator-heaters salon, independent of pump, valves, expansion tank, heat exchanger utilizing heat energy of exhaust gases, the combined liquid pipelines [U.S. Pat. 2230929 RF, F02N 17/00, VN 1/04. Publ. 20.06.2004, the prototype].

A common disadvantage of known systems is the lack of full use of t the rafts, exhaust from internal combustion engine exhaust gases for heating the coolant because of the low temperature difference between them.

The technical result of the invention is improving the efficiency of the cooling system of the vehicle is reduced to a more complete utilization of the heat energy of exhaust gases of internal combustion engines, thereby reducing the duration of the warm-up and to ensure an optimal temperature range of the coolant at low temperatures environment.

This technical result is achieved by the fact that unlike the prototype system maintain optimal thermal conditions of the internal combustion engine, includes an internal combustion engine, the heat accumulator phase transition, the heat sink-compartment heater, stand-alone pump, valves, expansion tank and heat exchanger heat exchanger heat energy of exhaust gases, though it is additionally equipped with a heat pump, the evaporator is a heat exchanger which is connected to the gas pipeline at the outlet of the heat exchanger utilizing heat energy of the exhaust gas, and the outline of the heat pump is connected by a hose to the throttle and the inlet to the compressor, the condenser is a heat exchanger of the heat pump is connected in the heating circuit system ohlord the tion, between the heat exchanger heat exchanger heat energy of exhaust gases and heat storage phase transition, and the outline of the heat pump is connected by a hose with the outlet of the compressor and the throttle.

Figure 1 presents the system maintain optimal thermal conditions of the internal combustion engine.

The system consists of the internal combustion engine 1 with a temperature sensor 2, equipped with a regular valve-thermostat 13, the liquid heat sink 8 and the liquid pump 3 connected to each other by pipes 7, 14, 16, the flue pipe 21 and the muffler 24 issue. Parallel to the liquid radiator 8 through the tee 18 and three-way valve 4 is connected to two of the primary circuit coolant - loop heating compartment and the heating circuit of internal combustion engine 1. The first circuit consists of a pipeline 10 and single faucet 11, radiator-heater salon 9, line 6 and the drain valve 5 and the second loop from the pump 20, a heat-exchanger of thermal energy of the exhaust gas 22, condenser, heat exchanger 30, TAPP 33 connected by pipes 19, 27, 34. In the gas pipe 21 at the outlet of the heat-exchanger 22 is mounted the heat exchanger-evaporator 23 and the muffler 24. The heat pump circuit consists of series-connected hose 32, 29, 26, 25, of the compressor 31, the con is instore-heat exchanger 30, the inductor 28 and the evaporator-heat exchanger 23. The surge tank 17 through compensating pipe 15 is connected with the suction inlet of the liquid pump 3, and through the drain pipe 12 with a liquid heat sink 8.

The system works as follows.

During operation of the internal combustion engine, the coolant coming from the internal combustion engine 1 is supplied to the pipe 16 under the action of the liquid pump 3 and is divided into three parts. In this part of the thread comes in a regular valve-thermostat 13, the other part through the tee 18 and single, the valve 11 in the circuit of the heating compartment and the third part through the tee 18 in the heating circuit of internal combustion engine 1. The temperature of the opening of the native valve of thermostat is (80±2)°C, full opening is achieved (93±2)°C. Therefore, when warming up the internal combustion engine 1 to the optimal temperature of the coolant flows in the pipe 14, bypassing the radiator 8. In the circuit of the heating compartment cooling fluid through one-way air valve 11 and pipe 10 passes through the radiator compartment heater 9, giving a portion of thermal energy for heating the cabin. Then through the pipeline 6, the coolant is returned to the cooling system. In the heating circuit of internal combustion engine 1, the coolant moves through the tee 18, line 19, then the liquid path of the heat-exchanger after the gases 22 and condenser-heat exchanger 30, in which it is heated. Next, the flow of the cooling liquid enters TAPP 33, which gives off part of its heat energy. When this heat storage material (TAM), in TAPP, is heated in the solid phase to the melting point MP, melts at this temperature and further heated in the liquid phase to a certain temperature, which is achieved thermal equilibrium between the flow of coolant and There. From TAPP 33 coolant back into the cooling system through the pipeline 34. After TAPP 33 fully accumulated thermal energy, the circulation of coolant through the heat exchanger, heat of the exhaust gas 22, the condenser-heat exchanger 30 and TAPP 33 does not stop in this case ensures optimal heat mode the internal combustion engine 1 and salon at low temperatures environment.

In the case of increasing the coolant temperature is above the optimal offer regular valve-thermostat 13, and the heat is a heat sink 8 in the environment.

Temperature sensor 2 having electrical connection with the clutch of the compressor 31 of the heat pump, controls its operation so that when the coolant temperature in the engine is below the optimum compressor is switched on, and when you reach the bottom level of the optimal temperature range is clochette.

The heated coolant in the condenser-heat exchanger 30 is performed by utilizing the heat energy of the exhaust gas in the evaporator-heat exchanger 23, using the heat of exhaust gases (in the interval from the coolant temperature at the outlet of the heat-exchanger to the ambient temperature), which is impossible to convey regenerative Teploobmennik more heated coolant.

During storage of thermal energy at the time of Parking the vehicle three-way valve 4, and a single valve 11 is closed. Thus THERE is maintained in the molten state due to the presence TAPP 33 high-performance insulation.

To preheat the internal combustion engine 1 after Parking, three-way valve 4 is set in such a position in which the heating circuit of internal combustion engine 1 is open for the movement of the coolant from TAPP 33, and the heating circuit of the salon is closed. When the auxiliary pump 20, the coolant flows into the pipes 19 and 27. Next, the flow of coolant passes through TAPP 33 and is heated therein by highlighting Tama latent heat of crystallization. While THERE undergoes a reversible phase transition, turning from liquid to solid. Then the heated coolant through the pipe 34 enters the cavity in Django pump 3 and zerobalance space of the internal combustion engine warming up last.

The surge tank 17 to the compensation pipe 15 and the drain pipe 12 are designed to compensate for the increased volume of the liquid coolant due to its thermal expansion, removal of air and vapors of the cooling liquid, as well as for filling the system.

Proposed technical solutions to maintain the coolant temperature within an optimal range due to more complete utilization of thermal energy of exhaust gases of internal combustion engines, thereby reducing the duration of the warm-up and increase the temperature to the optimum range at low temperatures environment.

The system serves to reduce the duration of heating and maintaining the optimum temperature of the coolant of the internal combustion engine and can be easily implemented in the construction and transportation.

System maintain optimal thermal conditions of the internal combustion engine, containing an internal combustion engine, the heat accumulator phase transition, the heat sink-compartment heater, stand-alone pump, valves, expansion tank and heat exchanger heat exchanger heat energy of exhaust gases, characterized in that it further equipped deploymaster, the evaporator is a heat exchanger which is connected to the gas pipeline at the outlet of the heat exchanger utilizing heat energy of the exhaust gas, and the outline of the heat pump is connected by a hose to the throttle and the inlet to the compressor, the condenser is a heat exchanger of the heat pump is connected in the heating circuit of the cooling system between the heat exchanger heat exchanger heat energy of exhaust gases and heat storage phase transition, and the outline of the heat pump is connected by a hose with the outlet of the compressor and the throttle.



 

Same patents:

FIELD: motor industry.

SUBSTANCE: device for thermal preparation of car units under winter conditions includes an air heater connected by a metal air duct with a gas-air manifold of a metal sleeve. The system is additionally equipped with a control unit and one manifold with valves to control supply of a gas and air mixture.

EFFECT: possibility to thermally prepare different units of a car and efficient consumption of a gas and air mixture.

1 dwg

FIELD: machine building.

SUBSTANCE: device with electronic control for steam heating of oil casing of internal combustion engine, gear box, axles of an automobile during winter season includes an air heater connected to the guide casing via a metal air line; according to the invention, periodically and at the end of thermal preparation, gas-air mixture is supplied and steam supply is switched off; steam supply is controlled by the control unit.

EFFECT: elimination of ice cover formation on the heated surface.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to automotive industry, particularly, to diesel fuel preheaters. Proposed device comprises casing with inlet branch pipe with valve at one end and outlet branch pipe with valve and fine filter at opposite side. Said branch pipes are intercommunicated via bypass branch pipe. Said casing is shaped to cylinder to accommodate cylindrical magnetic core with inner slots filled with multiphase winding. Short-circuited cylindrical secondary is rigidly secured on magnetic core inner surface and composed of electrically conducting material. Said secondary accommodates cylindrical secondary composed of electrically conducting material to revolve therein. Pressure blades are rigidly engaged with inner surface of cylindrical secondary. Revolving cylindrical secondary and magnetic core are separated by self-lubing nonconducting material that doubles as radial thrust plain bearing.

EFFECT: decreased weight and overall dimensions.

3 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises storage battery and ICE intake pipeline. In compliance with this invention, it additionally comprises heat insulation casing of storage battery connected with intake pipeline ICE compressor. Thermal switches of storage battery positive and negative wires and pneumoelectrical valve are fitted in said heat insulation case.

EFFECT: higher reliability in starting in cold weather.

1 dwg

Ice start heater // 2451207

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises heating element made up of infrared radiant burner communicated with gas cylinder, compact detachable case secured to ICE housing outer wall bottom. Heat exchanger filled with coolant is arranged above said heating element and provided with fluid intake and discharge branch pipes communicated with ICE cooling system. Heater casing top section accommodates branch pipe with detachable flexible hose to feed heated air via adapter to engine components.

EFFECT: easier start, faster warming up.

1 dwg

FIELD: engine building.

SUBSTANCE: invention can be used as a source of steam and gas mixture in pre-start heating both of internal combustion engines and automobiles. System of water supply regulation into the steam and gas mixture includes source of high-temperature gas mixture, collector, injectors, evaporator, vane-type pump, located coaxially with evaporator and connected to the collector through water mains with automatic throttle installed at the outlet of the pump.

EFFECT: invention ensures regulation of water supply to the high temperature gas mixture with system of water supply regulation to produce the steam and gas mixture of the necessary level of water saturation with vapor.

1 dwg, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: method involves hydrogen obtaining in electrolysis unit aboard the transport vehicle and the system that supplies hydrogen to the engine. At that, hydrogen is supplied in the required amount and as per the specified algorithm, depending on the cooling liquid temperature. Cold start-up and warm-up system includes electrolysis unit, pipelines, sensors, electric valves and control unit. Hydrogen and oxygen is obtained separately in the electrolysis unit. Hydrogen is supplied through receiver, electric valve and jet nozzle to ICE inlet pipeline. Oxygen is removed to the atmosphere. Supply of gaseous hydrogen to ICE inlet pipe at cold start-up and warm-up of the engine contributes to stable combustion of fuel-air mixture with higher degree of completeness at low concentration of toxic substances in waste gases.

EFFECT: reducing toxicity level of waste gases at cold start-up and warm-up of internal combustion engine with electronic control system and catalytic neutraliser.

2 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: pre-startup heater of engine, independent heating, generation of hydrogen-bearing gas consists of starting system, converter, heat exchanger and control system. Catalyst element is installed in converter and allows performing steam-air or air-carbon-dioxide, or steam-air-carbon-dioxide fuel conversion the products of which pass through heat exchanger and heating of heat carrier circulating through the heat exchanger is performed. Operating method of the above device is described as well; it consists in the fact that catalyst element is installed in converter and allows performing steam-air or air-carbon-dioxide, or steam-air-carbon-dioxide fuel conversion.

EFFECT: possibility of pre-startup heating of internal combustion engine and obtaining synthesis gas.

25 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention refers to devices for heating and maintenance of start-up temperature of internal combustion engine (ICE). Heat accumulator for maintaining the start-up temperature of ICE of construction machine during inter-shift downtime represents the cover fixed on jacket and tray of the engine. Cover consists of the first, the second and the third layers. The first layer represents material from strong reinforcing grid of polyester fibres with fixed cells, and layer of plasticised polyvinylchloride. The second layer is made on the basis of foamed polyethylene coated with aluminium foil. The third layer represents separate sections filled with phase-transition heat-accumulating material; at that, the above sections are located in three rows so that the first and the second row is located along ICE jacket with left and right side, and the third row of sections is located along oil pan of ICE. Sections with heat-accumulating material are attached to the second layer in order to exclude the possibility of movement of sections during ICE operation.

EFFECT: effective maintenance of start-up temperature of internal combustion engine during inter-shift downtime of construction machine.

4 dwg

FIELD: machine building.

SUBSTANCE: heat accumulators are used for pre-starting heating power systems of building machine at period of inter-shift down-time in winter. Heat accumulating material contains 2-3 g of edible gelatine, 2-3 g of sodium chloride and 1-2 g of sodium hydroxide per 100 g of over saturated solution of three-water sodium acetate.

EFFECT: improved operational characteristics of heat accumulating material such as temperature of reaction, temperature of self-crystallisation and temperature of phase transition.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method comprises heating the support bearing liner work surface layer and differs from known designs in that, to allow time and power savings, electric current is, first, passed through electric heaters built in under layer of every liner. Then liner electric heater power supply is cut off and, at the time, starting torque is applied. Invention comprises formula to determine time τ (s) of passing electric current through liner electric heater. Proposed device comprises metal layer of electric heater structure that is isolated all around by inorganic dielectric material laid under metal surface layer of every lines. Note that pair of faces of consecutively arranged liners are interconnected by common layer of electric heater metal. Note also that one of the liners comprises pin- or tape-type outer electric contact electrically connected with electric heater structure beginning, while the other liner has its electric heater end connected via inner pin terminal with liner metal base. At the same time, to use electric heater with different power in support plain bearing liner, every liner is furnished with inner pin and outer pin or tape terminals connected with liner electric heater beginning and end, respectively. Note that, to allow electric independence of electric heater of liner metal base, the liner is furnished with two pin or tape terminals electrically connected with electric heater structure beginning and end, respectively. Note also that work surface layer of such liner if provided with outer electrically insulated terminals connected with said layer. Invention covers a device design version.

EFFECT: higher time and power savings in starting cold engine.

6 cl, 12 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly to prestart warm-up device and method of its operation. Proposed device consists of starting system, converter, heat exchanger and control system. Converter accommodates catalyst for fuel air conversion. Fuel air conversion products pass through heat exchanger to warm heat carrier circulating through heat exchanger. Proposed method consists in that catalyst is built in converter to allow air conversion of fuel. Fuel air conversion products pass through heat exchanger to warm heat carrier circulating through heat exchanger.

EFFECT: expanded performances due to use of prestart warm-up device.

24 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method consists in cranking diesel engine crankshaft by external power source and feeding fuel in its cylinder. In compliance with this invention, with engine reaching its starting rpm, high-pressure pump is brought into engagement with crankshaft with gear ratio of 1:1 to allow feeding fuel two times in one cycle, i.e. at the end of compression stroke and at the of exhaust stroke, while with engine crankshaft reaching minimum stable rpm, high-pressure pump is brought into engagement with crankshaft with gear ration of 1:2 to provide standard fuel feeding conditions.

EFFECT: higher reliability of fuel ignition, reduced starting preparation period and starting crankshaft rpm, no power used for prestart warm-up.

FIELD: engines and pumps.

SUBSTANCE: device includes hollow tray with slots and branch pipe; along the perimetre of hollow tray there located is seal made in the form of inflatable casing; hollow tray is equipped with parallelogram mechanism consisting of lower horizontal beams and upper horizontal beams which are parallel and hinged to lower horizontal beam, stock hinged to bracket.

EFFECT: easier installation of the device.

3 dwg

Pre-heating device // 2418976

FIELD: engines and pumps.

SUBSTANCE: to pre-heat system containing air pipeline with branch pipes, heater and air supply fan there added is the hood fixed on "П"-shaped arches which are attached near the base by means of plate to slot-sector, as well as side curtains fixed on sides of the hood and equipped with restraining belts.

EFFECT: higher heat carrier efficiency.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: in internal combustion engine starting system containing cooling system of internal combustion engine, liquid heater connected to the main line of standard cooling system, heat carrier temperature sensors, standard fuel system of internal combustion engine with standard fuel tank and booster fuel pump, additional oil pump, independent electric power supply, the latter is made in the form of diesel generator unit with charging device of starter accumulator battery of locomotive, internal combustion engine starting system is equipped with additional fuel tank provided with overflow pipeline connected through drain pipeline to standard fuel tank, pipeline with valve and throttle connecting the additional fuel tank to delivery fuel pipeline, standard fuel system, pipeline with valve connecting the additional fuel tank to pipeline of diesel generator unit, pipeline with valve and pipeline connecting the additional fuel tank with liquid heater to standard fuel system parallel to booster fuel pump there installed is additional fuel pump, additional oil pump is connected parallel to standard purge oil pump, heat carrier temperature sensors for control of operation of the system are connected to pipeline with the lowest heat carrier temperature of cooling system of internal combustion engine in operating mode of internal combustion engine starting system; besides, liquid heater connected to additional fuel tank through pipeline with a valve is installed in driver's cabin.

EFFECT: increasing downtime of inoperative engine during cold seasons of the year in constant readiness for startup; thus, operating life of internal combustion engine is maintained and its operating reliability is improved.

2 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: heat accumulators are used for pre-starting heating power systems of building machine at period of inter-shift down-time in winter. Heat accumulating material contains 2-3 g of edible gelatine, 2-3 g of sodium chloride and 1-2 g of sodium hydroxide per 100 g of over saturated solution of three-water sodium acetate.

EFFECT: improved operational characteristics of heat accumulating material such as temperature of reaction, temperature of self-crystallisation and temperature of phase transition.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: invention refers to devices for heating and maintenance of start-up temperature of internal combustion engine (ICE). Heat accumulator for maintaining the start-up temperature of ICE of construction machine during inter-shift downtime represents the cover fixed on jacket and tray of the engine. Cover consists of the first, the second and the third layers. The first layer represents material from strong reinforcing grid of polyester fibres with fixed cells, and layer of plasticised polyvinylchloride. The second layer is made on the basis of foamed polyethylene coated with aluminium foil. The third layer represents separate sections filled with phase-transition heat-accumulating material; at that, the above sections are located in three rows so that the first and the second row is located along ICE jacket with left and right side, and the third row of sections is located along oil pan of ICE. Sections with heat-accumulating material are attached to the second layer in order to exclude the possibility of movement of sections during ICE operation.

EFFECT: effective maintenance of start-up temperature of internal combustion engine during inter-shift downtime of construction machine.

4 dwg

FIELD: engines and pumps.

SUBSTANCE: pre-startup heater of engine, independent heating, generation of hydrogen-bearing gas consists of starting system, converter, heat exchanger and control system. Catalyst element is installed in converter and allows performing steam-air or air-carbon-dioxide, or steam-air-carbon-dioxide fuel conversion the products of which pass through heat exchanger and heating of heat carrier circulating through the heat exchanger is performed. Operating method of the above device is described as well; it consists in the fact that catalyst element is installed in converter and allows performing steam-air or air-carbon-dioxide, or steam-air-carbon-dioxide fuel conversion.

EFFECT: possibility of pre-startup heating of internal combustion engine and obtaining synthesis gas.

25 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: method involves hydrogen obtaining in electrolysis unit aboard the transport vehicle and the system that supplies hydrogen to the engine. At that, hydrogen is supplied in the required amount and as per the specified algorithm, depending on the cooling liquid temperature. Cold start-up and warm-up system includes electrolysis unit, pipelines, sensors, electric valves and control unit. Hydrogen and oxygen is obtained separately in the electrolysis unit. Hydrogen is supplied through receiver, electric valve and jet nozzle to ICE inlet pipeline. Oxygen is removed to the atmosphere. Supply of gaseous hydrogen to ICE inlet pipe at cold start-up and warm-up of the engine contributes to stable combustion of fuel-air mixture with higher degree of completeness at low concentration of toxic substances in waste gases.

EFFECT: reducing toxicity level of waste gases at cold start-up and warm-up of internal combustion engine with electronic control system and catalytic neutraliser.

2 cl, 3 dwg

Up!