Rotary engine

Abstract

The rotary engine (1) comprises discs (4, 5). Between the two discs (4, 5) a working space (8) is formed by two grooves (11, 12) and equipped with an intake port (9) and an exhaust port (10). A control shaft (7) is mechanically or electronically connected with the main shaft (6) attached to the main disc (4). The control disc (5) is driven by the control shaft (7). Closing elements (13) having the same cross-section as the grooves (11, 12) and filling the cross-section of the work space (8) are fixed in one of the grooves (11, 12). An outer exhaust port (14) and an outer intake port (15) are formed on the housing elements (2, 3). The control disc (5) and the inner housing element (3) are connected with a one-way freewheel structure (25).

Description

[0001] ROTARY ENGINE

[0002] The invention relates to a rotary engine without a piston, the engine has two discs namely a crankshaft disc and a control disc arranged in a housing composed of an outer housing element and an inner housing element, and has a crankshaft and a camshaft. A working space is formed between the two discs, which is divided into an intake space, a compression space, an explosion space and an exhaust space. The engine is equipped with an intake port and an exhaust port. The camshaft is mechanically or electronically connected to the crankshaft.

[0003] An internal combustion engine is a volumetric heat engine in which, during a properly selected periodic thermodynamic work process the fuel bums in the combustion chamber and the heat of the working medium is converted into mechanical work. The driving principle of rotary engines without pistons, or planetary piston engines as Wankel engines were called, was developed by the German engineer Felix Wankel in the first quarter of the 20th century. But this engine was not widely distributed. Although the Wankel engine was not the only type of planetary piston engine, it was mass- produced for cars and it became the most well-known. After a long development, its technique was taken up again at NSU in the 1950s. The rotating piston or rotating disk, which most resembles an equilateral, inflated (bordered by convex lines) triangle, is connected to the so-called eccentric shaft, which corresponds to the crankshaft of the Wankel engine, with an internal toothed cogwheel. As a result of the eccentric placement, the disc does not move in its housing in a circle, but in a path that can be described by a complicated mathematical formula. The housing was designed so that during the piston’s movement all three peaks of it continuously touch the inner shell of the housing at every moment. During its rotation, the planetary piston also touches the shell with its sides; this allows the strokes of compression, power and exhaust.

[0004] The Wankel engine has several advantages over piston engines. Its specific performance is up to three times that of a piston internal combustion engine. Its vibration is significantly lower. Its operating speed range is wider. It consists of significantly fewer components than piston engines. It is easier to mass produce due to the fewer parts. The octane number of gasoline fuel can be changed over a wider range.

[0005] However, it has several disadvantages. The creation of the manufacturing conditions and tools of the fine and complicated structure requires extremely high precision, which is why it is difficult and expensive to produce. It requires extra material quality, its structure is complicated, so it is difficult to repair. It requires a lot of maintenance, and after the engine wears out, a large amount of waste material is generated. Certain parts of the combustion chamber must also be lubricated with motor oil, which results in planned motor oil consumption. Good lubrication and soot-free combustion require a compromise, i.e. , it is very sensitive to the quality of the engine oil. The wear of the edges of the convex triangle-shaped piston cannot be neglected. The Wankel engine is of constant compression and basically runs on gasoline.

[0006] Solutions relating to the development of the Wankel engine can be found in several patent documents, such as US 2988008 A and US 4012180A. These solutions do not eliminate the disadvantages of the Wankel engine either.

[0007] The special feature of the structural design of the rotary engine without piston according to the present invention is that the compression of the air, fuel-air mixture can be adjusted even during the operation of the engine, in accordance with the environmental and other conditions. Its fuel can be petrol, diesel, any atomizable and combustible material, for example field by-products. Due to the simple structural elements, its production is significantly cheaper than that of the Wankel engine, and it does not require extra costly quality material. Its structure is simple, it is quick to replace the worn parts as a unit, and it is relatively easy to repair. It requires little maintenance because, due to the characteristics of the structural elements, there is much less friction during operation during the same operating time, and thus heat generation and wear. After the engine wears out, a small amount of waste material is generated.

[0008] Hungarian patent application HU 230082 describes a rotary piston machine that works on the principle of volumetric displacement. It is equipped with a rotary piston having an ellipse cross-section and screw surface rotating around an axis fixed to the housing. Furthermore, it is provided with a rotary chamber parallel with the axis of the rotary piston. The transmission ratio of the rotary chamber is double that of the rotary piston. The rotary piston and the rotary chamber having an internal screw surface are in mutual movement. Furthermore, there are closed spaces between the rotary piston and the rotary chamber. The rotary piston and the rotary chamber have a continuously variable screw pitch along their entire operating length. This design is made up of elements with complicated geometry, and it is significantly different from the solution according to the present invention. The rotary engine without piston according to the present invention is made up of simple, easy-to-produce geometry elements, which are merely circle and square-based shapes.

[0009] Hungarian patent No. HU 177224 describes a rotary piston mechanism for power and heavy machines. The structure contains an even number of segment-shaped pistons located in a closed housing, as well as shaped and normal cogwheels located outside the housing. The pistons form an even number of work spaces within 360°. The fittings delimiting the work spaces are connected by means of concentric axles to a control mechanism designed in such a way that each of the shaped cogwheels, provided with also concentrically bearing and arranged outside the housing, fits to one of the normal cogwheels eccentrically attached to the same main shaft. Intake and exhaust openings are formed on the casing or side surface of the housing.

[0010] In this solution, the position of the piston creates a large imbalance. In the case of the rotary engine without a piston according to the present invention, it is easy to balance each closing element. By connecting several elements, vibration, low friction and the small number of moving parts can be easily optimized, the noise effect is minimal and, as a result, the engine will run smoothly.

[0011] English patent application GB 223257 describes a rotating device that operates with fluids. The design consists of two toothed rotor members, one of which is eccentrically connected to the other from the inside. One has a tooth less than the other, and that drives the other. The teeth of the two rotors enclose the chambers of the rotor, the size of which increases and decreases during rotation. The teeth exert pressure during the opening and closing of the suction and discharge openings of the chambers. Furthermore, at the same time, they continuously maintain a fluid-tight connection between them and separate the rotor chambers. The relative movement of the mentioned elements ensures that fluid flows into the chambers and is emptied from there through the mentioned openings. The fundamental disadvantage of this solution is the large amount of friction, which means energy loss and a significant reduction in efficiency compared to the solution according to the present invention.

[0012] Hungarian patent No. P 0800241 relates to an engine that does not operate with a piston that sways or moves up and down. The piston is a cylindrical flywheel-like rotor. Recesses corresponding to the explosion area are formed in it. The cylinder is a shell in which the rotor rotates similar to a piston engine. The cylinder is divided into parts every 120 degrees. A channel towards the center is formed in each part. One is the intake port, the other is the cylinder head, and finally the exhaust port. The cylinder head is a milled flat part, in which there is a spark plug and an ignition cone. A fundamental disadvantage of this solution is that the air-gasoline mixture must be introduced at high pressure. This disadvantage does not occur with the solution according to the present invention, because the rotary engine without a piston can be controlled during its operation in such a way as to create a vacuum in the intake chamber, therefore it is not necessary to inject the air / fuel-air mixture with high pressure.

[0013] All of the described solutions can only be operated with liquid and gaseous substances, while the rotary engine according to the present invention can also be operated with solid substances, e.g., also with powdered field by-products.

[0014] Patent applications DE 4428341 A1 and DE 3815122A1 describe engines with piston. The difference between the solutions described in these documents and the solution according to the present invention is that they do not describe discs where the crankshaft disc has a crankshaft groove and the control disc has a control disc groove, which are joined together to form a torus / toroid-shaped airtight workspace, and in each of the grooves, a closing element with the same cross-section as the grooves, which fills the cross-section of the workspace, is inserted.

[0015] The rotary engine without a piston according to the present invention cannot be produced by combining the above documents.

[0016] Our aim is to develop an engine that has a simpler design than the previously known rotary engines and can operate with a wider range of fuels. Our further aim is to create a green aggregator that can be easily manufactured and used practically with the solution according to the present invention. Furthermore, it has been taken into account that the pistons move vertically up and down during the operation of the traditional Otto engine. During the operating cycle, the piston speed is braked to zero once at the upper end point and once at the lower end point, and the system suffers braking and restart losses. Also, our aim is to transform the vertical movement of the pistons of the traditional Otto engine into a rotating movement, in order to avoid braking and stopping the accelerated pistons at the lower and upper end points, i.e., the continuous restarting of the process. The aim of the present invention is to eliminate the resulting energy loss and improve the operation of explosive engines. By eliminating the energy loss, namely, by eliminating the constantly repeated stopping and restarting and the conversion of rotary motion into straight-line motion, the efficiency of the engine according to the present invention is increased.

[0017] It has been realized that if, according to the present invention, an explosion space is created in an inner empty ring forced to rotate, and the energy of the explosion produced in it is used as a rotating force, continuous restarting can be avoided. During the operation of the engine according to the invention, the swinging structural element set in motion by the explosive energy is not stopped during the drive process. In the case of such a design, due to the possibilities provided by the structural design and control, the explosion space can be flexibly adapted to the explosion characteristics of the fuel currently being used. That is, a toroidal shape cut in half in the horizontal direction, in the form of two rings cut in half, is inserted into a disk each, and the two half-rings are connected with shafts mutually sliding into one another, the aim is attainable.

[0018] The present invention is a rotary engine without a piston, which consists of two discs, a crankshaft disc and a control disc, as well as a crankshaft and a camshaft arranged in a housing consisting of an outer housing element and an inner housing element. A working space is formed between the two disks, which is divided into an intake space, a compression space, an explosion space and an exhaust space. The engine is provided with an intake port and an exhaust port. The camshaft is mechanically or electronically connected to the crankshaft. The crankshaft is attached to the crankshaft disc. The control disc is arranged on the crankshaft and connected to the camshaft. The two discs, namely the crankshaft disc has a crankshaft groove, and the control disc has a control disc groove. These are joined to each other to form a torus / toroid- shaped closed workspace. In each of the grooves, a closing element having the same cross-section as the grooves and filling the cross-section of the work space is placed. One of the crankshaft groove and the control disc groove has the exhaust port, the other has the intake port. An outer exhaust port is formed on one of the housing elements, and an outer intake port on the other. The disc with the intake port is surrounded by the housing element with the outer intake port, the disc with the exhaust port is surrounded by the housing element with the outer exhaust port. The control disc and the inner housing element are connected with a one-way freewheeling structure. The camshaft is equipped with a control element that ensures the phase shift to the crankshaft. Some advantageous embodiments of the invention are described in the appended claims.

[0019] Detailed description of the invention will be given with reference to the accompanying drawings in which:

[0020] Figure 1 is a side view of the engine according to the invention, partially in section.

[0021] Figure 2 is a front view of the control wheel.

[0022] Figure 3 is a front view of the engine according to Figure 1 , without a control element. Figure 4 is a kind of connection between the control wheel and the control element. Figure 5 is a front view of the crankshaft disc.

[0023] Fig. 6 is a side view section of the crankshaft disc taken along section line VI-VI of Figure 5.

[0024] Figure 7 is a front view of the control disc.

[0025] Figure 8 is a side view section of the control disc taken along section line VIII-VIII of Figure 7.

[0026] Figure 9 is a front view of the outer housing element.

[0027] Figure 10 is a front view of the internal housing element with the free-running structure. Figure 11 a is a side view of the engine according to the invention in partial section, where the control disc is not coaxially connected to the crankshaft.

[0028] Figure 11 b is a front view of the control wheel with a broken-out section of the engine, where the engine is connected to the connection point of the elements connecting the small wheels.

[0029] Fig. 12 is a side view of the engine according to the invention, where the control element is installed in a certain way, in partial section.

[0030] Figure 13 is a front view of the connection between the control element and the camshaft.

[0031] Fig. 14 is a side view of the engine according to Fig. 1 , where the control element is connected to the control wheel by means of a worm drive, in partial section.

[0032] Fig. 15 is a side view of the engine according to Fig. 1 , where the control element is connected to the internal teeth of the big wheel, in partial section.

[0033] Figure 16 shows the connection between the control element and one of the small wheels, where the control element is shown in partial section.

[0034] The rotary engine 1 without a piston according to the invention (Figs. 1 ; 11 ; 12; 14; and 15) is arranged in a housing which consists of an outer housing element 2 (Fig. 9) and an inner housing element 3 (Fig. 10). The rotary engine 1 consists of two cup-shaped discs, namely the crankshaft disc 4 (Figs. 5 and 6) and the control disc 5 (Figs. 7 and 8), as well as the crankshaft 6 and the camshaft 7 (Figs. 1 ; 11 ; 12; 14; and 15). Between the crankshaft disk 4 and the control disk 5, the working space 8 is formed (Figures 1 ; 11 ; 12; 14; and 15). The working space 8 is divided into intake space, compression space, explosion space and exhaust space in the usual and known manner for rotary engines. The engine 1 is provided with an intake port 9 and an exhaust port 10. The camshaft 7 is mechanically or electronically connected to the crankshaft 6. The crankshaft 6 is attached to the crankshaft disc 4. The control disc 5 is arranged on the crankshaft 6 and is connected to the camshaft 7. In the two discs, namely in the crankshaft disc 4 the crankshaft groove 11 , in the control disc 5 the control disc groove 12 is formed. These are joined together to form a torus / toroid-shaped airtight workspace 8. In each of the grooves 11 , 12, a closing element 13 matching the crosssection of the grooves 11 , 12 and filling the cross-section of the working space 8 is installed. The exhaust port 10 is formed in one of the grooves 11 or 12 and the intake port 9 is formed in the other groove. An outer exhaust port 14 is formed on one of the housing elements 2, 3 and an outer intake port 15 is formed on the other. The disc with the intake port 9 is surrounded by one of the housing elements 2 or 3 with the outer intake port 15, the disc with the exhaust port 10 is surrounded by the other housing element 2 or 3 with the outer exhaust port 14. From the point of view of the invention, it is irrelevant which port is formed on which housing elements 2, 3. The relative position of the closing elements 13 and the position of the exhaust port 10 and the intake port 9 on the housing elements 2, 3 divide the working space 8 into an intake space, a compression space, an explosive space and an exhaust space. The control disc 5 and the inner housing element 3 are connected by a one-way freewheeling structure 25. The camshaft 7 is provided with control element 20 ensuring the phase shift to the crankshaft 6.

[0035] In one embodiment, the connection between the crankshaft 6 and the camshaft 7 and between the crankshaft 6 and the control disc 5 is realized by the cogwheels 16 (Figures 1 ; 11 a and 14).

[0036] In Figure 11 b the small wheels 19 are connected with connecting elements, and the control element 20, for example a motor, preferably a stepper motor, is inserted in the connection point. The possible control of the control element 20 is explained in connection with the following drawings, which is, in any case, well within the knowledge of a person skilled in the art.

[0037] In another embodiment (Fig. 12), the signal of the transmitter disc 22 placed on the crankshaft 6 is detected by the signal receiver 23, the output of which is fed to the control unit 21 . The control unit 21 operates the control element 20, which, by moving the control wheel 24, ensures the relative position of the camshaft 7 and the crankshaft 6, i.e., the size of the intake space, compression space, explosion space and exhaust space formed in the working space 8.

[0038] In a third embodiment (Fig. 15), the signal of the transmitter disc 22 placed on the crankshaft 6 is detected by the signal receiver 23, the output of which is fed to the control unit 21 . Furthermore, a transmitter disk 22 is placed also on the camshaft 7, to which a signal receiver 23 is also connected, the output of which is also fed to the control unit 21. The control unit 21 determines the relative position of the camshaft 7 and the crankshaft 6 based on the incoming signals. The control unit 21 is used to operate the control element 20 in such a manner that by moving the control wheel 24 the relative position of the camshaft 7 and the crankshaft 6 is ensured, i.e., the size of the intake space, compression space, explosion space and exhaust space formed in the working space 8. In this case, the axle of the control element 20 is connected to one of the small wheels 19 according to Figure 16.

[0039] According to a possible solution, the control element 20 is, for example, a stepping motor, the control of which can be solved in a known manner. This stepper motor is connected to the big wheel 17 having internal teeth and formed on the camshaft 7 with a forced connection (Figure 1 ). The big wheel 17 is connected to the axle wheel 18 having external teeth and formed on the camshaft 7 via small wheels 19 having external teeth (Figure 2).

[0040] According to another possible solution, the control element 20 is an electrically controlled motor to which the output of the control unit 21 is connected. The output of the signal receiver 23 is connected to the input of the control unit 21 through the transmitter disc 22 fixed to the crankshaft 6 (Figure 12). The control unit 21 (e.g., a computer) operates the control wheel 24 on the basis of the received signals, i.e., adjusts the size of the intake space, compression space, explosion space and exhaust space in the working space 8.

[0041] In the solution according to Figure 14, the control element 20 is an electrically controlled motor, which is connected to the toothed ring formed on the casing of the control wheel 24 by means of threads (with a so-called worm drive). The output of the control unit 21 is connected to the control element 20. The output of the signal receivers 23 is connected to the input of the control unit 21 through the transmitter discs 22 attached to the crankshaft 6 and cam shaft 7. The control unit 21 (e.g., computer) operates the control wheel 24 on the basis of the received signals, i.e. , adjusts the size of the intake space, compression space, explosion space and exhaust space in the working space 8. The embodiment according to Figure 15 differs from this solution in that the axle of the control element 20 is connected to the axle of one of the small wheels 19.

[0042] The cross-section of the working space 8 defined by the grooves 11 , 12 of the engine

[0043] I according to the invention can be optional, the point is that a closed working space 8 should be defined by the grooves 11 , 12, which communicate with the outer space only through the ports 9, 10, 14 and 15. The cross-section of the grooves 11 , 12 of the working space 8 can be a circle consisting of two halves, ellipse, polygon, etc.

[0044] In the solution according to the invention, the central part of the engine 1 is the crankshaft disc 4 and the control disc 5. In the inner space closed by the crankshaft disc 4 and the control disc 5, i.e., in the working space 8, a closing element 13 is placed respectively in the crankshaft groove 11 and in the control disc groove 12. The space enclosed by the two closing elements 13 in the working space 8 is used as the explosion volume. The energy released during the burst of the fuel delivered to the working space 8 is used to rotate the crankshaft disc 4 and the crankshaft 6 which form a unit. Based on these, it is clear that the rotary movement does not need to be converted into linear movement, so one of the initial problems regarding drive optimization is solved.

[0045] In the Figures (e.g., Figure 5), the exhaust port 10 is formed in the crankshaft groove

[0046] I I of the crankshaft disc 4, and the intake port 9 is formed in the control disc groove 12 of the control disc 5. Preferably, the exhaust port 10 is located in the working crankshaft groove 11 , and the intake port 9 is formed in the control disc groove 12. The operation is not affected if the intake port 9 is formed in the crankshaft groove 11 of the crankshaft disc 4, and the exhaust port 10 is formed in the control disc groove 12 of the control disc 5. One full revolution corresponds to a working cycle. The intake, compression, work and exhaust strokes take place in separate groove sections within one revolution. Thus engine 1 according to the present invention is a four-stroke internal combustion engine. In the grooves 11 , 12 of the engine 1 according to the invention, the section in which an explosion is caused is closed with a closing element 13 filling the cross section of the groove. One closing element 13 is fixed in the crankshaft groove 11 , and the other closing element 13 is fixed in the control disc groove 12. The protruding part of the closing element 13 in the groove 11 of the crankshaft disc 4 and the closing element 13 in the groove12 of the control disc 5, completely fill the cross-section of the working space 8 closed by the grooves 11 , 12 when connecting the crankshaft disc 4 and the control disc 5 to each other. The closed workspace 8 is formed by connecting the crankshaft disc 4 and the control disc 5 to each other. The crankshaft disc 4 and the control disc 5 can already rotate axially on each other. The circular movement of the discs 4, 5 is driven by the torque arising on the closing elements 13 from the explosive energy. The control disc 5 is slowed down at the moment of explosion, while the crankshaft disc 4 keeps moving by the force generated by the explosive energy arising from the closing element 13 attached to it. This creates a torque, which causes the crankshaft disc 4 and with it the crankshaft 6 to rotate and to perform work.

[0047] The fuel supply and then the exhaust are realized through the intake port 9 and the exhaust port 10, according to the control setting, possibly with the intervention of the control unit 21. During this, the position of the intake port 9 on the housing element is adjusted with the camshaft 7 in relation to the outer intake port 15 on the inner housing element 3, and the position of the exhaust port 10 on the crankshaft 6 in relation to the outer exhaust port 14 on the outer housing element 2.

[0048] This structure is essentially a slot-controlled four-stroke engine.

[0049] A work cycle comprises one complete revolution, within one revolution, the work the exhaust, the intake and the compression stroke take place in separate sections. The circular process drives the control disc 5, i.e., the crankshaft 6 and the machine connected to it.

[0050] The start of the work cycle is the end of compression. The crankshaft disc 4 and the crankshaft 6 start rotating due to the torque generated on the closing element 13. The camshaft 7 is driven with the cogwheels 16, i.e., the planetary gear control attached to the camshaft 7 of the control wheel 24, through which for example, the angular speed and position of the control disc 5 are controlled.

[0051] The exhaust stroke starts at the end of the work cycle. As soon as the exhaust port 10 is in a position overlapping the outer exhaust port 14 formed on the respective 2 or 3 housing elements, the exhaust takes place through the ports opened in this way. The intake port 9 on the control disc 5 is still closed.

[0052] The beginning of the intake stroke is the end of the exhaust stroke. The exhaust port 10 closes as the exhaust port 10 of the further rotating crankshaft disc 4 leaves the outer exhaust port 14 of the housing element 2 or 3. The intake port 9 of the control disc 5 overlaps the outer intake port 15 on the housing element 2 or 3, so it is possible to intake, inflow of the fuel.

[0053] At the end of the intake stroke, the compression stroke begins. The closing element 13 inserted in the control disc groove 12 of the control disc 5 approaches the closing element 13 located in the crankshaft groove 11 of the crankshaft disc 4, thus narrowing the space down to the explosion volume. The explosion can even be caused by an electric spark in a known way (this is not shown), but the compression with the engine 1 according to the present invention can be to such an extent that the use of an electric spark may be unnecessary. Compression of this degree is not used for engines running on gasoline due to the design of the construction.

[0054] The advantage of the solution according to the invention is that it can replace any existing driving mechanism, and it improves the emission regulation of several European Union standards in proportion to the consumption of low specific fuel. The working elements are controlled with the already existing technical elements. In addition to efficiency, the explosion space can be changed dynamically in the same engine in compliance with the fuel. This is achieved by controlling the relative position of the two discs as needed. Another advantage is that the rotary motion does not have to be converted into a linear motion, i.e. , the energy loss is reduced.

Claims

Claims1 Rotary engine (1 ) without a piston having two cup-shaped discs, a crankshaft disc (4) and a control disc (5) arranged in a housing composed of an outer housing element (2) and an inner housing element (3); a crankshaft (6) and a camshaft (7); between the two discs a working space (8) is formed which is divided into an intake space, a compression space, an explosion space and an exhaust space, the engine (1) is equipped with an intake port (9) and an exhaust port (10), the camshaft (7) is mechanically or electronically connected to the crankshaft (6) characterized in that the crankshaft (6) is attached to the crankshaft disc (4), the control disc (5) is arranged on the crankshaft (6) and connected to the camshaft (7), the two discs, namely the crankshaft disc (4) has a crankshaft groove (11 ), and the control disc (5) has a control disc groove (12), these are joined to each other to form a torus / toroid-shaped airtight workspace (8), in each of the grooves (11 , 12), a closing element (13) having the same cross-section as the grooves (11 , 12) and filling the cross-section of the work space (8) is placed, one of the crankshaft groove (11 ) and the control disc groove (12) has the exhaust port (10), the other has the intake port (9), an outer exhaust port (14) is formed on one of the housing elements (2, 3), and an outer intake port (15) on the other, the disc (4, 5) with the intake port (9) is surrounded by the housing element (2, 3) with the outer intake port (15), the disc (4, 5) with the exhaust port (10) is surrounded by the housing element (2, 3) with the outer exhaust port (14), the control disc (5) and the inner housing element (3) are connected by a one-way freewheeling structure (25) and the camshaft (7) is equipped with a control element (20) that ensures the phase shift to the crankshaft (6).2 Engine according to claim 1 characterized in that the connection between the crankshaft (6) and the camshaft (7) as well as the connection between the crankshaft (6) and the control disc (5) is realized by means of cogwheels (16).3 Engine according to claims 1 or 2 characterized in that the control element (20) is connected through a forced connection to the big wheel (17) having internal teeth and formed on the camshaft (7), the big wheel (17) is connected via small wheels (19) having external teeth to the axle wheel (18) having external teeth and formed on the camshaft (7).4 Engine according to claim 1 characterized in that the control element (20) is an electrically controlled motor, to which the output of a control unit (21 ) is connected, and the output of a signal receiver (23) being in signal receiving connection with the transmitter disc (22) attached to the crankshaft (6) is transmitted to the input of the control unit (21 ).5 Engine according to any of claims 1 - 4 characterized in that the working space (8) determined by the grooves (11 , 12) has circular cross-section. 6 Engine according to any of claims 1 - 4 characterized in that the cross-section of the working space (8) determined by the grooves (11 , 12) is elliptic.7 Engine according to any of claims 1 - 4 characterized in that the cross-section of the working space (8) determined by the grooves (11 , 12) is polygonal.

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