The invention relates to the power engineering industry, in particular, to the power plants with engines of heat energy external supply which can be utilized as multifuel engines, and it can be applied to produce heat, cold, electric power and in other brunches of technics where the plants of this type can be used.

Background of Invention.

A power plant is known in the art to contain a steam boiler, a turbine with a condensator equipped with a circulating circuit and a heat utilizer-cleaner of exhaust gases with the areas of wet cleaning and condensing, on the latter of them a surface heat exchanger-condensator is mounted connected at the inlet to the outlet main of the circulating circuit of the turbine condensator and at the outlet to the heat consumer; an additional turbine and a condensator can be used as a heat consumer the exit of which is connected to the inlet main of the circulation circuit (SU, AI, 785570).

This plant only provides limited economy, caused by a low efficiency because of high energy losses in a steam and condensing blocks.

A Stirling multicylinder and multifuel engine of double action is known in the art to contain primary and secondary heat pipes as heat conducting elements; the engine cylinders are located V-shapely; a secondary heat machine embraces the heater pipes and the refrigerated areas of the primary heat pipes, and a heating space with a combustion chamber and a primary heat pipes block is placed in the cavity between the cylinders (SU. AI 1617173).

This Stirling engine of double action is characterized by complexity in the production technology of the heat exchanger of a primary and secondary circuit, and the applied heating scheme to be realized in this engine does not allow to achieve the efficiency above 0.25.

A power plant is known in the art to include a piston-type pump, a cylinder, a butt- end partition dividing the engine cylinder into two volumes, one of them is a pump chamber: inside the cylinders there is a displacing piston and a working piston connected with a pump piston, an expansion cavity, a compression cavity and a buffer cavity; the expansion cavity and the compression cavity are connected to fixed in sequence a heater, a regenerator and a cooler made in the form of a heating pipe fixed into a central hole of the partition

and secured on the cylinder; heating pipe condensation area is located in the pump chamber, and the heating pipe evaporation area is located in the compression cavity; the pump chamber is equipped with the valves to input and output the overpumped liquid (SU, AI, 1671930).

The plant is characterized in that the synchronizing of a piston and valve mechanism is a complicated process due to that the whole plant can not work stability what prevents from obtaining ecologically clean waste combustion products.

An engine with the external heat exchange of the working body is known in the art to contain compression cylinders and expansion cylinders of the working body, heat exchangers (SU, AI, 1815385).

This device is an engine working on a Stirling cycle containing six cylinders; in each cylinder there is fixed a piston with a piston-rod to divide the cylinder volume into a hot and a cold cavities, the pistons of all cylinders are connected by means of the crankshaft with a drive mechanism to be placed in the crankcase; the drive mechanism is made as a rodless power mechanism with a four-supported crankshaft including three worm journals located relatively one to another at the angle of 120°, on each of them there are two intermediate links to be mounted with a socket joint, these links are jointly connected to a corresponding slider connected to a piston-rod and fixed in guides made in the crankcase coaxialy with the cylinder. The engine can be used as a multifuel engine.

This device is characterized in that there are problems in keeping balance, the bounds of a hot and a cold cavities are vague due to heat overflow, what finally decreases the efficiency. The efficiency of the machines working in this way is restricted by value 0.2.

Methods are known in the art to increase the economy and to improve the environment ecology in the heat machines (G. Walker"Machines working on Stirling Cycle ,"Moscow,"Energia", 1978) These methods include the execution of the exothermal processes to heat the working body (fuel combustion) and the execution of the working cycle with the cooling of the working body by blowing off the heat-absorbent medium through the heat exchanger.

These methods are characterized in that: -the fuel heat energy supplied to the working organs of the heat machine is insufficiently complete used;

-the thermodynamic efficiency of the working body cycle in the heat machine is msuiciently high; -the dynamic working organs of the heat machines, cylinder-piston blocks, in particular, are insufficiently economical Disclosure of Invention It was aimed to work out the multifuel engine with the external heat exchange of the working body, which could ensure the rise in the efficiency as well as in the specific capacity providing high operational characteristics and ecological indices of the environment.

Moreover, the engine should provide for a possibility of using any type of organic fuel: solid, liquid, gaseous, heat accumulator energy, solar energy, heat energy of nuclear and thermonuclear reactors and etc.

The raised problem has been solved by this invention.

In the multifuel external combustion engine containing cylinders to expand and to compress the working body, heat exchangers, according to the invention, the compression cylinders are installed to be divided into at least two groups, the volume of the group to be the first in the direction of the working body movement is larger than the volume of the last group; the expansion cylinders are installed to be divided into at least two groups; the volume of the group to be the first in the direction of the working body movement is smaller than the volume of the last group; heaters are mounted between the groups of the expansion cylinders, coolers are mounted between the groups of the compression cylinders, and at least one heater is mounted between the last group of the compression cylinders in the direction of the working body movement and the first group of the expansion cylinders, and at least one cooler is mounted between the last group of the expansion cylinders in the direction of the working body movement and the first group of the compression cylinders; the engine contains a system to control and to keep its working parameters stability.

The engine can contain either sensors of output power or consumed power or sensors of output power and consumed power and of revolutions number; the sensors are connected to the system to control and to keep its working parameters stability.

In particular, the system to control the engine and to keep its characteristics stability can contain a block to regulate thermodynamic parameters of the engine, a block to regulate gasodynamic parameters of the engine.

If the multyfuel engine is designed to work as an electric power station, it contains an electric generator connected to the outlet shaft of the engine and a block to regulate electric parameters.

The block to regulate thermodynamic parameters of the engine can contain at least one temperature sensor mounted in the block of external combustion and/or on the heat exchangers and/or on the cylinders as well as a block to control a fuel supply and/or an air supply into the combustion chamber.

The block to regulate gasodynamic parameters of the engine can contain at least one valve mounted in the block of cylinders and/or in the pipings, connected to the revolutions number sensor and/or pressure sensor, at least one receiver connected to the compressor and to the pipings system through at least one valve; the valve is connected to the revolutions number and/or pressure sensors.

The block to regulate electric parameters of the engines can contain an accumulator of electric energy connected to the generator; the accumulator is connected to the tension and frequency transformer-stabilizer which is established to be capable of linking up to the consumer.

The accumulator, in particular, can be connected to the heat exhausted elements.

In a preferable version of the engine execution, the compression cylinders and the expansion cylinders are mounted to be divided into two groups; the volumes correlation of the compression cylinders groups is 4: 1-1,5: 1, and that one of the expansion cylinders is relatively 1: 1,5-1: 4 according to the direction of the working body movement.

In particular, the engine can contain six expansion cylinders and four compression cylinders; the compression cylinders are mounted in pairs on the common rods.

The above heat exchangers can be connected to the heat power accumulators.

The heat power accumulators, in particular, can be made in the form of a pipe to be filled with the substance of exothermal crystallization effect; the heat exchanger is at least partially located in this pipe or envelopes it.

The working butt-end surfaces of the cylinders pistons is preferably made convex in cross-section according to the direction of a piston movement under the pressure of the working body.

In particular, the working butt-end surfaces of the cylinders pistons are made conical in cross-section.

In a preferable version of the invention execution the lateral working surfaces of the cylinders pistons are made with a convexity towards the lateral walls of the cylinders.

In another version of the invention execution, the lateral working surfaces of the cylinders pistons can be made with the annular flows.

In a preferable version of the invention execution, the engine contains an accumulator of mechanical energy connected to the shaft (for example, a fly-wheel connected to the shaft by means of a coupling).

The raised problem is also solved by means of another invention, namely, by a method to run the engine with the external heat exchange of the working body.

In the method to run the engine with the external heat exchange of the working body including the execution of the exothermal processes to heat the working body, as well as the execution of the working cycle with cooling of the working body by means of blowing a cooling medium through the heat exchanger, according to the invention, the outlet and consumed power is to be measured by means of outlet and consumed power sensors, the signals of these sensors are transmitted to the system to control the engine and to keep its working parameters stability, and by means of the above-mentioned system, the control of the exothermal processes intensity and/or of the working body pressure are carried out.

In particular, by carrying out the method, the revolutions number of the outlet shaft is measured, and a sensor signal is transmitted to the system to control the engine and to keep its working parameters stability; by means of this system, the engine works under the revolutions number within the predetermined range.

In a preferable version of the method execution, the temperature sensors signals on the cylinders inlets are transmitted to the valves of the block to regulate thermodynamic parameters of the engine of the system to control the engine and to keep its working parameters stability; and under insufficiently high temperature, the supply of the substances to provide exothermal processes should be increased and should be decreased under excessive temperature.

Under decrease and increase of the working body pressure in the heat exchangers, it is possible correspondingly, that the heat is relatively supplied to or taken away from the working body by means of the heat power accumulators.

In a preferable version of the method execution, signals of the power and revolutions number sensors are transmitted to the valves of blocks to regulate gasodynamic engine parameters of the system to control engine and to keep its working parameters stability; and under insufficient high engine power capacity, the working body is supplied from the receiver into the high pressure circuit and put out of the high pressure circuit under the excessive power.

By using the engine for electric power plant work, under excessive power of the engine, a signal of the power sensor is supplied to the accumulator relay and a current from the generator is partially supplied through the transformer block to the electric energy accumulator, and under insufficient power, a current from the accumulator is supplied through the transformer block to the user.

If this method is carried out in the cylinder-piston engines with the exhaust valves, under the escape of the working body out of the cylinder, the exhaust valves is being closed until the cylinder piston reaches a dead point, and by the following movement of the piston to the dead point, the pressure is formed in a bad volume above the piston mirror in the range from the initial pressure in the cylinder up to the working pressure.

The working body input into the cylinders can be carried out in the condition of a rotating flow.

Not less than two groups of compression cylinders to be available allow to carry out the additional compression of the working body having been compressed in the first group what finally increases the device efficiency. Between the groups of compression cylinders, heat exchangers-coolers are mounted; they allow to take away the heat from the compressed gas before its further additional compression what also increases the device efficiency.

The selected correlation of the cylinders volumes allows to provide the maximum device efficiency.

Not less than two groups of expansion cylinders to be available allow to carry out the additional expansion of the working body having already been expanded in the first group what finally increases the device efficiency. Between the groups of the expansion cylinders,

heat exchangers-heaters are mounted; they allow to heat the expanded gas before its further expansion what also increases the device efficiency. The selected ratio of the cylinders volumes allows to provide the maximum device efficiency.

Dividing of the working cylinders into groups with intermediate cooling under the compression and intermediate heating under the expanding carried out with the intermediate heat exchangers sufficiently increases thermodynamic efficiency of the working body cycle. A claimed range of the cylinders extreme groups volumes also allows to minimize the quantity of cylinders standard sizes.

The system to control the engine and to keep its working parameters stability is necessary to provide stable operation of the engine in the required conditions.

The sensors of exhausted and consumed power to be available as well as the sensors of the number of engine revolutions are necessary to get initial data about the engine operation in each moment of the time; these data are required to be transferred to the system to control the engine and to keep its working parameters stability.

The system to control the engine and to keep its working parameters stability contains a block to regulate thermodynamic parameters of the engine and a block to regulate gasodynamic parameters of the engine. The block to regulate thermodynamic parameters of the engine allows, in particular, to vary the heat amount supplied into the heat circuit of the engine due to the change of a combustion fuel mixture quantity and quality or by means of work intensity variation of other heat sources if there are any. The block to regulate gasodynamic parameters of the engine allows to vary the exhausted power of the engine due to the variation of the pressure and the quantity of the working body moving round the circuits of the engine If the engine is used to get the electric energy, it contains an electric generator connected to the outlet shaft of the engine as well as a block to regulate electric parameters of the engine allowing to transform the mechanical energy of the shaft rotation into the electrical one and to supply the electrical energy of required parameters to the consumer.

To provide a stable engine work and a stable supply of the electric energy to the consumer, the engine contains an accumulator of the electric energy. When the electric energy is insufficiently consumed, its excess is supplied through the rectifier to the accumulator under control of a tension and frequency stabilizer. Under the lack of the electrical

energy, in particular, when the engine starts, the energy is supplied from the accumulator to the network through the tension rectifier. The accumulator can perform other functions, for example, to supply the electric energy to the heat exhausted elements to discharge the excess of the energy.

A temperature sensor which is in a block to regulate thermodynamic parameters of the engine allows to measure the temperature of the main working elements of the engine heat circuits and on the base of this temperature value to regulate the supply of the fuel mixture or the work of other heat sources. The regulation is carried out, for example, by means of a block to control the supply of the fuel and/or the air into the combustion chamber.

Valves of the block to regulate engine gasodynamic parameters allow to output the excess of the working body from the heat circuits under the exceeding over the required pressure, or revolutions number or other engine characteristics regulated by means of this block. A receiver connected to the compressor allows if necessary to increase the pressure in the heat circuits of the engine and with that to increase the number of the engine revolutions either its capacity or other required characteristics. The sensors of the revolutions number and of the pressure of this block transmit the required information to the block.

Division of the working cylinders into the groups with the intermediate cooling under the compression and with the intermediate heating under the expansion sufficiently increases the thermodynamic efficiency of a working body cycle. The range of offered volumes correlations of the last cylinders groups also allows to minimize the quantity of cylinders standard sizes.

The connection of the heat exchangers with the accumulators of heat energy allows to increase the efficiency of the heat exchangers operation by forming the heat reserve which when required passes to the working body (or vice versa). Accumulators of heat energy can be made, for example, in the shape of a pipe filled with the substance with the exothermal effect of crystallization. Such system allows to accumulate heat with great efficiency as it has a sufficient heat capacity connected with the emission (absorption) of latent heat of crystallization(fusion).

If the working surfaces of the cylinder pistons are made convex (for example, conical) in cross-section in the direction of the piston movement under the working body pressure, it allows to distribute uniformly the working body pressure about the piston

surface and to prevent from piston distortion what make it possible to evade additional energy consumption to overcome the exceed friction force which is formed under distortions caused by irregular pressure distribution.

The lateral surfaces made convex in the direction towards the cylinder lateral walls or the working lateral surfaces of the cylinders pistons made with the annular flow cause a similar effect.

An accumulator of mechanical energy is required to provide smooth engine work in transitional processes.

Output and consumed power capacities are main characteristics allowing to make a conclusion if the system is in the condition required for work. Therefore output and consumed power capacities are measured by means of the output and consumed power capacity sensors; these sensors signals are supplied to the system to control the engine and to keep its working parameters, and by means of said system, the intensity of exothermal processes and/or the working body pressure are regulated.

Revolutions number of the output shaft indicates the stability of its work, therefore a signal of the revolutions number sensor is transmitted to the system to control the engine and to keep its working parameters stability and by means of which the engine works under the number of revolutions within a predeterminated range.

The system to control the engine and to keep its characteristics stability contains a block to regulate thermodynamic parameters of the engine, a block to regulate gasodynamic parameters of the engine, a block to regulate electric parameters of the engine. What is important to note out that the link between these three blocks is carried out mainly due to the control processes to be self-organized but not by means of complicated systems and algorithms of direct and back communication. For example, the working body temperature rise automatically leads to the pressure rise under the constant volume as well as to the increase of the revolutions number and system power capacity.

As the temperature is the main parameter according to which the conclusion about the system thermodynamic condition can be made, the signals of the temperature sensors on the cylinders inlet are transmitted to the valves of the blocks to regulate the thermodynamic parameters of the engine of the system to control the engine and to keep its working parameters stability, and under insufficiently high temperature, the supply of the

substances providing the exothermal processes is increased, and under exceeding temperature their supply is decreased.

As the power capacity and revolutions number of the engine are such parameters which should be quickly changed, the signals of power capacity and of revolutions number sensors are transmitted to the valves of the block to regulate fast changing parameters- gasodynamic parameters of the engine of the system to control the engine and to keep its working parameters stability and under insufficiently high power capacity of the engine the working body is supplied from the receiver into the circuit of high pressure, and under the exceeding power capacity, the working body is put out from the high pressure circuit.

If the method of energy conversion is carried out in the cylinder-piston machines with the outlet valves, when the working body is being exhausted from the cylinder, its required portion is preferably to be kept in the cylinder; this portion should be sufficient to form the working pressure in a bad volume above the piston mirror in the range from the initial pressure in the cylinder up to the working pressure. Thus, when the working body is being exhausted from the cylinder, its required portion is being kept in the cylinder which is sufficient to create the working pressure in a bad volume above the piston mirror. Practically, it can be done, for example, by way of closing the outlet valve before the piston achieves the upper dead point. The valve movement control can be carried out by means of a profiled cam connected to the crankshaft of the cylinder-piston machine.

Actually, if this operation is not carried out, the working body in a bad volume above the piston mirror will be under the initial pressure. When the next gas portion is being supplied, a part of work will be consumed to increase the pressure in a bad volume up to the working pressure, and this work will be considered as the losses. If a portion of the working body is being kept in the cylinder to be compressed up to the working pressure when the cylinder moves to its bottom, these losses will not occur.

The working body is preferably let into the cylinders in the regime of a rotatory flow since thereby the gasodynamic parameters of the working body entering the cylinder, for example, the pressure, are regularly distributed on the piston surface and, consequently, decreases the probability of its distortion preventing of unproductive energy losses.

Short Description of Drawings.

The invention is illustrated by the following drawings 1-3., where: Figl shows the main engine scheme.

Fig. 2 shows the heat energy accumulator cross-section made in the form of the pipe filled with the substance with the exothermal effect of crystallization.

Fig. 3 shows the variants of cylinders pistons surfaces execution.

Detailed Description of Invention.

The multifuel external combustion engine contains expansion cylinders (1-6) and compression cylinders (7-10) of the working body. The expansion cylinders (1-6) are mounted being divided into two groups (1-2,3-6); the volume of the first according to the direction of the working body movement group (1-2) is smaller than the volume of the last group (3-6) by two times. The compression cylinders (7-10) are mounted being divided into two groups (7-8,9-10); the volume of the first according to the working body movement group (7-8) is larger than the volume of the last one (9-10) by two times. Between the groups of the expansion cylinders in the chamber (11) wherein the heat is brought up (fuel combustion chamber), a heater 12 is installed. Between the compression cylinders groups, a cooler 13 with a fan 14 is installed. Between the last group (9-10) of compression cylinders according to the working body movement direction and the first group of expansion cylinders (1-6), a heater 15 and a recuperator 16 are installed. Between the last group of expansion cylinders (3-6) according to the working body movement and the first group of the <BR> <BR> <BR> <BR> compression cylinders (9-10) a cooler 17 and a recuperator 16 are installed. The engine is contained an output power sensor 18 (wattmeter) which one is fixed behind the electric power generator 19 to be located on the shaft 20, a consumed power sensor-fuel consumption meter 21 installed on the inlet of the jet 49, revolutions number sensor 22 fixed on the shaft 20. All the sensors are connected to the system to control the engine and to keep its working parameters stability, a control case 23 containing a block 24 to regulate thermodynamic parameters of the engine, a block 25 to regulate gasodynamic parameters of the engine as well as a block 26 to regulate electric parameters. The block to regulate thermodynamic parameters 24 of the engine contains a temperature sensors 27 installed on the heat exchangers 12 and 15. The block 24 also contains a block to control the fuel supply into the combustion chamber, it is made in the form of the regulated valve 28. The block 25

to regulate gasodynamic parameters of the engine contains valves 29 and 30 installed in the pipings on the heat exchangers 12 and 15. The valves 29 and 30 are connected to the revolutions number sensor 22 by means of the control case 23. As a control case 23, any programmable controller of mass production can be used. Mass produced valves can be used as valves. A receiver 31 is connected to the compressor 32 and by means of the valve 33 to the piping system of the high pressure circuit. The valve 33 is connected to the revolutions number sensor 22 by means of the control case 23. To make the operation more reliable, the engine should contain a second receiver 31 which is connected to the compressor 34 and by means of the valve 35 to the piping system of the low pressure circuit. The valve 35 is connected to the revolution number sensor 22 by means of the control case 23. On the entrances of both receivers 3, safety valves 36 and 37 are located connected to the compressors drivers 32 and 34 by means of the control case 23.

The block 26 to regulate the electric parameters of the engine contains an accumulator of the electric power 38 connected to the generator 19. The accumulator 38 is connected to the thransformer-stabilizer of the tension and frequency, the latter is installed capable to be connected up to the user. The accumulator 38 is connected to the heat exhausted elements 39. In this example of invention execution, the compression cylinders (7-9) and the expansion cylinders (1-6) are installed to be divided into two groups; the correlation of the compression cylinders groups volumes (7,8 nd 9,10) is 1,5: 1, and that of the expansion cylinders (1,2 and 3-6) is relatively 1: 2 according to the working body movement direction. It should be noted out that the engine contains six expansion cylinders (1-6) and four compression cylinders (7-10); the compression cylinders (7 and 9,8 and 10) are installed in pairs on the common rods. The heat exchangers 12 and 15 are connected to the heat energy accumulators 40 and 41. Moreover, the heat energy accumulators (Fig 2) can be made in the shape of the pipe 42 filled with the substance 43 with the exothermal effect of crystallization (for example, eutectic alloy Si-Al). The heat exchangers 12 and 15 are located in the pipes 42 in this case. As it can be seen in Fig. 3 the working butt-end surfaces 44 and 45 of the cylinders 1-10 are made convex (conical, for example) in the cross-section according to the direction of the pistons movement under the pressure of the working body.

The lateral working surfaces 46 of the pistons 45 of the cylinders 1-10 are made with a

convexity and with the annular flows47 towards the lateral walls 48 of the cylinders 1-10.

Preferable shape and sizes of the annular flows are determined by gasodynamic calculations.

A fly-wheel 49 is connected to the shaft 20 by means of the coupling 50 which is electrically connected to the control case 23.

The engine runs in the following way. Compressed up to the required pressure the working body from the first group of cylinders 7 and 8 enters the cooler 13, wherein it is cooled down to the lower temperature by means of the air flow and the fan 14, after that it travels into the second group of the cylinders 9 and 10, wherein it is compressed up to the higher pressure and heated. From the cylinders 9 and 10 the working body moves into the recuperator 16 wherein it is additionally heated up by means of the counterflow of the working body (the flows are separated with a wall) and enters the heater 15 wherein it is heated up to the higher temperature due to the energy of the fuel supplied to the get- burner 49. Then the working body enters the first group of the expansion cylinders 1-2 wherein it is expanded and cooled down, after that it travels into the heat exchanger 12 wherein it is heated up to the higher temperature. Then the working body moves into the second group of the expansion cylinders 3-6 wherein it is expanded and cooled again. From the cylinders 3-6 the working body enters the recuperator wherein it is partially cooled down by the counterflow of the cooled working body, after that it travels into the cooler 17 wherein it is cooled down to the minimum cycle temperature by means of air scavenging with the fan 14 (practically to the environment temperature). Then the working body comes again into the first group of the compression cylinders and the process of the machine work is cyclically repeated in the described sequence. The efficient work of all the expansion cylinders is sufficiently higher than the work of its compression in all the compression cylinders owing to that a positive torque moment is formed on the crankshaft 7. The movement of the working body, of the air, of the combustion products and of the fuel is shown with the arrows in Fig. 1.

When the load changes on the outlet shaft of the engine with the aim to keep the parameters of the engine work stability, the fuel supply is simultaneously increased (decreased) through the valve 28, exceeding (lacking) heat is transmitted to the accumulators 40 and 41, what brings to the adequate change of the temperature and pressure in the working circuit, the working body is discharged or pumped into the circuit through the compressors 32 and

34 and the valves 33 and 35, the excess (lack) of the electric power is discharged (consumed) on the reserved load (electric accumulator 38).

Let's consider in details the way to use the engine as a working engine for the thermal electric power station. To provide stability frequency of electric current in the consumer network, permanent revolutions number of the electric generator and, consequently, of the engine should be kept up.

At some moment of the time the electric power consumption can be decreased by the user (for example, when the industrial equipment is being off). Herewith the revolutions number of the engine begins to increase due to decrease of electromagnetic interaction between a rotor and a stator of the electric power generator 19. The revolutions number increase is registered with a sensor 22 a signal of which is transmitted to the control case 23, its blocks 24 and 25 where it is transformed into the control signals. The signal from the block 24 is transmitted to the regulated fuel valve 28 which one decreases the fuel supply.

The signal from the block 25 is transmitted to valves 29 and 30 which ones are partially being opened and discharge a part of the working body (air) into the atmosphere.

Simultaneously, the signal from the block 26 to regulate electric parameters is transmitted to the transformer which switches on its function to rectify the electric current, and the excessive energy is discharged into the accumulator 38. In consequence of that, the revolutions number falls down to the required one. The sensor 22 transmits the corresponding signal to the control case 23 which by means of the blocks 24 and 25 transmits the signals to the valve 28 and valves 29,30 which relatively stop decrease of the fuel supply and the working body discharge into the atmosphere. When the engine in operation, the compressors 32 and 34 is working being connected to the shaft 20 by means of a coupling (it is shown in the drawing) and force the air into the receiver 31.

When the required pressure has been achieved, the signals from the sensors-valves 36 and 37 are transmitted to the control case 23 and where from to the compressors 32 and 34 drives (couplings), by means of what the compressors 32 and 34 are switched off.

Now let's consider the case when the energy consumption by the user suddenly increases. Herewith the revolutions number of the engine begins to decrease due to the increase of the electromagnetic interaction between a rotor and a stator of the generator 19 of the electric energy. The decrease of the revolutions number is registered by the sensor 22 the

signal of which is transmitted to the control case 23, its blocks 24 and 25 where it is transformed into the control signals. The signal from the block 24 is transmitted to the regulated fuel valve 28 which increases the fuel supply. The signal from the block 25 is transmitted to the valves 33 and 35 which ones are partially being opened and supply the working body (the air) from the receivers 31 into the engines circuits. The air pressure in the receivers 31 falls down and the control case 23 transmitted the signal to switch on the compressors 32 and 34 which bring the pressure in the receivers to the required one.

Simultaneously the signal from the block 26 to regulate electrical parameters is transmitted to the transformer which switches on its function to transform the direct electric current into the alternative one, and the energy from the accumulator 38 is supplied to the user. In consequence of that, the revolutions number of the engine increases to the required one. The sensor 22 transmits the corresponding signal to the control case 23 which by means of the blocks 24 and 25 transmits the signals to the valves 28 and the valves 33 and 35, which relatively stop increase of the fuel supply and the working body supply to the engine circuit. On the basis of these operations, the engine works in the programmed range of the revolutions number.

The engine starts working under the synchronous switch on of the engine starter (it is shown in the drawing) by means of the accumulator 38 provided simultaneous opening of the fuel valve 28. Engine emergency stop is carried out due to complete discharge of the working body from the engine circuit by means of the valves 29 and 30.

When the revolutions number varies, the control case 23 switches on the coupling 50 connecting the fly-wheel 49 to the shaft 20.

One of the most important advantage of the above-described engine is the application of great variety of heat sources (its multyfuel capacity). The heat block can be made in the form of several various chambers designs for external combustion of the fuel (natural gas, diesel fuel, coal, firewood and others.) Industrial Application.

Most effectively this invention may be applied, in particular, to provide the work of heat electric power stations as well as to create the transport means working on the mixed scheme"engine-generator"or"electric engine-wheel".