WO2018189408A1 - Radial engine - Google Patents

Abstract

The radial engine (100) comprises sets (A₁, A₂,... A_n) of radial elements (A₁₁, A₁₂,... Α_1n; Α₂₁, A₂₂... A_2n; A_m1, A_m2... A_mn) attached to a common output shaft (SA), and a number of groups (G₁, G₂, G_k) with sets (B₁₁, B₁₂,... B_1j; B₂₁, B₂₂... B_2j; B_i1, B_i2,... B_ij) of cylinders (C) pistons (P) attached to corresponding shafts (SB₁, SB₂... SB_i), the sets (A₁, A₂,... A_n) of radial elements (A₁₁, A₁₂,... A_1n; A₂₁, A₂₂... A_2n; A_m1, A_m2... A_mn) being arranged with respect to the sets of cylinders (C) and pistons (P) such that, in use, one end (EA) of the radial elements (A₁₁, A₁₂,... A_1n; A₂₁, A₂₂... A_2n; A_m1, A_m2... A_mn) is contacted sequentially by one end (EP) of a piston (P) of a respective set of cylinders (C) and pistons (P) causing the common output shaft (SA) to be rotated.

Description

 Radial engine

Description This description refers to a radial engine. Background

Radial motors, also called star motors, consist of pistons arranged to slide inside corresponding cylinders that are radially arranged around a central crankshaft. The alternative thrust of the pistons is transmitted to the central crankshaft through corresponding connecting rods, the crankshaft converting said thrust into rotation of an output shaft.

Before gas turbine engines predominated, the radial configuration was very commonly used in engines, particularly in aircraft. However, at present, the manufacturing and maintenance costs of current radial engines are extremely expensive due to their complexity. This complexity is mainly due to the connections with the pistons, the crankshaft structure, which

normally requires counterweights and other mechanisms, etc. Currently, the radial engine configuration is not completely satisfactory for a wide range of applications.

There have been attempts in the art to simplify radial motors. For example, patent document EP0062095 describes a radial piston engine arranged to drive in rotation a common central axis where the crankshaft structure is dispensed with. The pistons have semi-spherical ends housed in respective semi-spherical cavities of eccentric transverse supports. On the other hand, the hemispherical ends of the cylinders are housed in respective hemispherical cavities of said central axis. This and other solutions proposed in the art are still complex and expensive, since they are based on the arrangement of eccentric elements, machined central output shaft with cavities, etc. Therefore, the solutions Alternatives presented for engines with radial architecture are not efficient and so far they have not been able to displace conventional in-line or V-motors. The present description refers to a particular architecture for an engine, whether combustion, hydraulic, magnetic, etc. for the generation of electricity, mechanical propulsion energy, etc. It is an architecture that has been found to be highly advantageous, with which the disadvantages of known radial engines are overcome, and with which additional advantages are obtained, as will be seen hereafter.

Description

The proposed radial engine comprises a plurality of sets of radial elements. These sets of radial elements are connected to a common output shaft, that is, they are integral to it or are coupled thereto by any appropriate means, such as a generator, for example, as will be seen later. In operation, said plurality of sets of radial elements, therefore, rotate with said output shaft. Said output shaft may be connected directly, or through a suitable transmission, a mechanical propulsion mechanism, an electricity production mechanism, as indicated.

previously, or many other applications. It is preferable that the elements in said plurality of radial element assemblies are radially distributed, that is, defining a star-shaped configuration, equidistant around said output shaft, or the generator, if this is arranged. In a non-limiting example, an architecture that can be advantageous is one with five sets of radial elements, that is, five stars, in which one, some or all of the aforementioned five stars comprises five radial elements. With the said equidistant radial distribution around the axis, in this specific example of five radial elements in each set, or star, the ends of the radial elements are angularly offset from each other by an angle of 72 °. Other configurations and numbers of stars and radial elements are possible. The engine could be configured in a modular way, so that the same architecture can be modified according to the needs. In the architecture described, it is advantageous that the radial elements of an assembly are also angularly offset from the radial elements of another contiguous assembly. For example, it may be preferable that a radial element of an assembly is angularly offset with respect to a corresponding radial element of an adjacent assembly at an angle of 14.4 °. Other settings are possible.

A plurality of groups are also provided, each consisting of several cylinders and pistons. In each group, the cylinders and pistons are integral with corresponding shafts or are connected to them by any suitable means. Therefore, the cylinders and pistons rotate with their respective axes. Corresponding to the example of the above advantageous architecture, there can be arranged, for example, three groups of cylinder and piston assemblies in which each group can comprise, for example, five cylinders and pistons. In this particular example, the three groups of cylinders and pistons are arranged surrounding the sets of radial elements configured in stars, as indicated above. Thus, in operation, the first set of radial elements receives the impulse of the pistons of the first set of cylinders and pistons, the second set of radial elements receives the impulse of the pistons of the second set of cylinders and pistons, and so on , sequentially and synchronously.

In the architecture described, it is also advantageous that, in the same group, the cylinders and pistons are angularly offset with respect to cylinders and pistons of an adjacent group. For example, it may be advantageous that, in the same group, the cylinders and pistons are angularly displaced from cylinders and pistons of an adjacent group at an angle of 14.4 °. This value for the relative angular displacement of the cylinders and pistons between adjacent groups is not limiting and other different values are possible.

In an advantageous example, the number of pistons and cylinders in a group of pistons and cylinders is the same as the number of radial elements in a corresponding radial element set. It is also advantageous that the number of radial elements is the same in the radial element sets. However, many other different combinations within the defined general architecture are not ruled out.

As indicated above, the radial element assemblies in the proposed architecture are arranged between them and with respect to said cylinder and piston assemblies such that, when the radial engine is in operation, one end of each radial element is sequentially contacted by one end of a piston of a respective set of cylinder and piston assemblies. As a consequence of this relative angular displacement arrangement between piston assemblies and cylinders of adjacent groups, as well as radial elements of contiguous radial element assemblies, the displacement of the pistons within the respective cylinders causes the output shaft to rotate common.

In order to ensure adequate and efficient transmission of the piston pulse over the radial elements, it is preferable that the end of the radial elements and the respective end of the pistons of the cylinder and piston assemblies are properly configured to be temporarily housed at least partially with each other sequentially. As indicated above, since the radial elements are integral to the common central axis, or are coupled to it, the rotation of the radial elements by the impulse of the corresponding pistons causes the rotation of the common central axis. It may be preferable that the end of one, several or all of the radial elements has a concave reception area adapted to receive the blow of the expansion of a spherical part of the end of the corresponding piston. The area of impact or contact between the end of the pistons and the end of the radial elements can be different and in any angular position, forming an angle between them of 0 ^or - 270 °. The impact between the end of the pistons and the end of the radial elements can be tangential or direct in diameter. The actuation of the pistons of said cylinder and piston assemblies can be carried out in several ways, such as, for example, by combustion of fuel, hydraulically, magnetically, etc. I dont know discarded, however, other ways to cause the

displacement of the pistons, including hybrid modes such as combustion-magnetic, gas-magnetic, hydraulic-magnetic, etc. In one example, in one, several or all cylinder and piston assemblies, at least one of the cylinders is constituted by an extensively finned structure. This finned structure is mounted radially in a central body. Inside said central body there is a cavity that defines a combustion chamber, in case of actuation of the combustion pistons. The central body could have, for example, a pentagonal configuration for the above-mentioned example of five sets of cylinders and pistons, so that the pistons are arranged radially forming an angle of 72 ° between the axes

longitudinal of each. Other different configurations are possible.

In one example, the cylinders have a threaded area. This threaded area allows the threading of the cylinders in the central body. Inside each cylinder there is a sleeve along which the corresponding piston can slide when the engine is running.

As indicated above, the cylinder and piston assemblies, for example, the pentagons in the particular example mentioned above, are arranged so that they can rotate around respective axes. Several sets of cylinders and pistons on the same axis form a group of sets of cylinders and pistons. In this example, many pentagons on the same axis form a group of cylinder and piston assemblies. Consequently, in operation, the pistons and cylinders can rotate freely around their corresponding common axis when the engine is running.

As indicated above, an electric current generator can be arranged connected to the common output shaft. Said generator may be connected to the radial elements or it may be incorporated as part of it. The said generator would thus be configured to simultaneously and continuously receive the pulses of each of the pistons, as described above, to produce electrical energy. With the particular configuration described, the important advantage is that the present architecture lacks a crankshaft and connecting rods. Consequently, considerable mechanical simplicity is obtained, with great savings in manufacturing and maintenance costs, in addition to greater mechanical efficiency compared to a conventional radial engine. Another advantage of the described architecture is that it allows to provide a great power in a small space.

Other objects, advantages and features will become apparent to the person skilled in the art from the description, or may be derived when the present description is put into practice.

BRIEF DESCRIPTION OF THE DRAWINGS Next, a particular non-limiting example of the present rotary motor will be described with reference to the attached drawings, in which:

Figure 1 is a perspective view of an example of the present engine architecture, consisting of three groups of cylinders and pistons arranged radially around five sets of radial elements; Figure 2 is a front elevation view of the example of the engine architecture of Figure 1 where it can be seen how the end of a piston is in contact with an end of a corresponding radial element;

Figure 3 is a perspective view of five sets of cylinders, showing one of them devoid of the main body, where they have been

Polished various fluid conduits;

 Figure 4 is a side elevational view showing three sets of cylinders and pistons, of the same group, in combination with three sets of radial elements, showing the connection between a piston and a radial element at a certain moment of operation. the motor;

Figure 5 is a front elevation view showing the connection between a piston and a radial element, according to Figure 4;

Figure 6 is a front elevational view in detail of a central body of a set of cylinders and pistons;

Figure 7 is a front elevation view of the central sectioned section according to plane 6-6 of Figure 6;

Figure 8 is a sectioned front elevation view of a cylinder; Y Figure 9 is an elevation view of a piston.

Description of a preferred example A radial engine is described below, as a whole designated by 100 in Figures 1-9 of the drawings. The radial engine 100 is intended for the production of energy in power plants, or for mechanical propulsion, for example, in vehicles, vessels, although many other applications are not ruled out.

The radial engine 100, in the non-limiting example illustrated in said figures 1-9, comprises five sets Ai, A ₂ , ... A ₅ of radial elements An, A- | ₂ , ... A15; A ₂ i, A22, ..., A25; A51, A ₅₂ ... A55. It is evident that another different number of sets of radial elements is possible within the described configuration. The radial elements An, A-12, ... Α-ι ₅ ; A21, A22, ..., A25; A51, A ₅₂ ... A55 are distributed radially in an equidistant manner on a common output shaft SA. Thus, the ends of the radial elements An, A-12,. . . Ai 5; A21, A22,. . . , A25; A51, A ₅₂ ... A55, which in the illustrated example are configured as arms, form an angle of 72 ° to each other in the described example.

Each set Ai, A ₂ , ... A ₅ of radial elements An, A-12, ... Α-ι ₅ ; A21, A22, ■ A25; A51, A ₅₂ ... A55 defines a star configuration, as can be seen in Figures 1 and 2 of the drawings. Hereinafter, each set will be called star Ai, A ₂ , ... A ₅ . The radial elements An, A-12, ... A- | ₅ ; A21, A22, ..., A25; A51, A ₅₂ ... A55 of each star Ai, A ₂ , ... A ₅ are integral with said common output shaft SA, or are coupled to it in any appropriate manner such that, in operation, the radial elements An , A-12, ... A- | ₅ ; A21, A22,. . . , A25; A51, A ₅₂ ... A55 of the stars Ai, A ₂ , ... A ₅ and the common output shaft SA rotate all together.

As can be seen in Figure 2 of the drawings, the radial elements An, A-12, ... A-15 of a star Ai are angularly displaced by an angle of 14.4 ° with respect to the radial elements A21, A22,. . . A25 of an adjacent star A ₂ .

In the non-limiting example illustrated in Figures 1-9 of the drawings, the radial engine 100 comprises three groups Gi, G2, G3 each comprising five sets Bu, B12, ... B51, ... B ₅₅ of cylinders C. Inside each cylinder C there is a sleeve 60 a along which a corresponding piston P can slide, as shown in figure 5. Therefore, the assemblies Bu, B12, ... B51, ... B ₅₅ will be called assemblies Bu, B- 12, ... B51,. . . B55 of cylinders C and pistons P. Another different number of groups Gi, G2, G3 .. Gk of sets Bu, B-12, ... B51, ... B ₅₅ of cylinders C and pistons P is possible with a displacement angular between them appropriate, such as 90 °, 72 °. etc. An increase in the number of groups Gi, G2, G3 .. Gk allows to obtain a greater power ratio, since at the same number of revolutions there are more thrusts.

The sets Bu, B-12,. . . B5-1, ... B ₅₅ of C cylinders and P pistons could be positioned in a spiral arrangement with each other. This allows each piston thrust P to be followed more often, obtaining a more constant operation.

In the non-limiting example illustrated, the pistons P are driven by combustion. The fuels used can be liquefied natural gas, methane, biogas, hydrogen, compressed air, etc.

Each set Bu, B-12,. . . B5-1, ... B ₅₅ of cylinders C and pistons P is connected to a corresponding axis SB-ι, SB ₂ , SB ₃ so that each set Bu, B-12,. . . B5-1, ... B ₅₅ of cylinders C and pistons P can rotate freely while engine 100 is running.

As can be seen in Figure 6 of the drawings, each set Bu, B-12,. . . B51,. . . B55 of cylinders C and pistons P comprises a central body CC of pentagonal configuration incorporating radially distributed cavities 15. The cavities 15 are adapted to accommodate respective spark plugs, not shown, in accordance with the corresponding cylinders C.

Said cavities 15 associated with each cylinder C are in contact with a combustion chamber formed inside each central body CC. The combustion chamber may be of cylindrical configuration, which may be preferable due to its low cost and good performance since the spark plug spark is in direct contact with the entire mixture. Combustion chambers can also be used in the form of a bathtub or wedge, the which have an angulation on one or two of its sides, where the spark plug is arranged, in a lateral position. The valves are mounted on a cylinder head, eliminating the turbulence of the mixture, so that the connecting rods have greater durability. However, other types of combustion chambers, such as hemispherical, dome-shaped configuration, are not ruled out. These combustion chambers have valves in lateral arrangement and the spark plug disposed on the cusp of the chamber, generating a smaller path of the spark and a higher level of flame, obtaining a high power.

As shown in Figure 3, the central body CC also includes five radially distributed couplings 25 which are configured to receive the respective cylinders C by threading, through an internal threaded zone 20 of each cylinder C, as shown in Figure 6. The radial couplings 25 define said combustion chamber.

The spark plugs of the engine 100 are part of an ignition system. In operation, the spark plugs provide the activation energy necessary to start the combustion process by means of the spark they produce in the central body CC of each set Bu, B- | ₂ , ... B ₅ i, ... B ₅₅ of C cylinders and P pistons.

Referring to Figure 3 and Figure 7 of the drawings, the central body CC in the assemblies Bu, B- | ₂ , ... B51, ... B ₅₅ of cylinders C and pistons P includes internal ducts through which fluids, in particular fuel, air and lubrication oil, which enter and leave the combustion chamber defined in the interior of the central body CC, as indicated above. These fluids also circulate through the interior of the SB-i, SB ₂ , SB ₃ axes of the Bu, B- | ₂ , ... B51, ... B ₅₅ of C cylinders and P pistons and distributed through flow control valves, not shown.

Each central body CC in the sets Bu, B- | ₂ , ... B ₅ i, ... B ₅₅ of cylinders C and pistons P includes an intake port 10 adapted for the intake air intake, as shown in Figure 7. The intake port 10 is connected to a corresponding inlet duct 45, shown in figure 3, which leads to the combustion chamber defined inside the central body CC, as indicated above. This intake port 10, the above-mentioned ducts and an intake valve disposed in the access to the combustion chamber to regulate the air intake, form part of the engine intake system 100. The function of the engine intake system 100 is to allow the introduction of air from the outside to the combustion chamber of each central body CC of the assemblies Bu, B- | ₂ , ... B51, ... B ₅₅ of C cylinders and P pistons.

The fuel and air enter a previous chamber, not shown, where mixing is carried out in appropriate proportions so that it is always the same amount of fuel and in the same proportion that enters the interior of the combustion chambers, which guarantees a good thermodynamic efficiency. In each central body CC of the sets Bu, B- | ₂ , ... B ₅ i, ... B ₅₅ of cylinders C and pistons P there is a cavity 1 1, as shown in Figure 7, adapted for housing therein of a fuel injector, not shown. This fuel injector is connected to a conduit 40, illustrated in Figure 3, through which fuel under pressure circulates. The injector may be mechanical, such as the injector of a diesel engine, or it may be electronic, such as in the case of a gasoline engine. The duct 40 connects the combustion chamber with the fuel inlet to the system through the respective axes SB-i, SB ₂ , SB ₃ of the assemblies Bu, B- | ₂ , ... B ₅ i, ... B ₅₅ of C cylinders and P pistons. The injector is part of an engine injection system 100 intended to introduce fuel into the combustion chamber. The injection system of the engine 100 comprises ducts through which fuel flows from a tank to the combustion chamber in each central body CC. There, the injector introduces the fuel in the right conditions so that the ignition is carried out optimally. The fuel is pressurized by means of a pressure regulator, not shown, before injection.

Referring again to FIG. 7, the central body CC of the set Bu of cylinders C and pistons P, shown by way of example, includes an exhaust port 12 adapted for the combustion gas outlet through a Exhaust duct 50, shown in Figure 3. There are also respective holes or cavities 13, 14 adapted for the housing, therein, of an exhaust valve, not shown, and said inlet valve, which allow the combustion gas outlet and the air inlet, respectively. The exhaust port 12 and the exhaust duct 50 are part of an exhaust system designed to collect the gases produced in combustion during operation. The gases leave the combustion chamber through the exhaust valve and circulate through the exhaust duct 50 in each central body CC of the respective assemblies Bu, B- | ₂ , ... B51, ... B ₅₅ of cylinders C and pistons P. The gases produced in combustion inside each cylinder C pass through the corresponding exhaust valve, as indicated, and are treated before being expelled into the atmosphere so that, at the time of their expulsion, they comply with current regulations for the emission of pollutants and noise. To this end, adapted silencers and resonators can be used to reduce the exhaust pressure of the gases (not shown) and, consequently, the noise level of the engine 100. The exhaust system may also include a catalytic converter, not shown, adapted to reduce emissions of pollutants in the atmosphere. Said catalytic converter can be, for example, a homogeneous catalyst, an electrocatalyst, an organocatalyst, an industrial catalyst, a catalyst in oil processing, a catalyst in fertilizer processing, etc.

Referring now to Figure 9, the pistons P include sealing rings Pe. These sealing rings Pe are adapted to prevent the circulating lubrication oil from entering the combustion chamber of each central body CC of the respective assemblies Bu, B- | ₂ ,. . . B51,. . . B55 of cylinders C and pistons P. The sealing rings Pe are arranged between a main zone Pa of the piston P and a conical zone Pb of the piston P, which ends in a semi-spherical element EP _t which will be described later.

As can be seen in the specific example illustrated in Figures 1-9 and described here, the number of pistons P and cylinders C in each set Bu, B-12, ... B51,. . . B55 is equal to the number of radial elements An, A12, ... Ai 5; A21, A22, ..., A25; A51, A ₅₂ ... A55, in this case five, and the number of radial elements An, A12, ... Α-ι ₅ ; A21, A22, ..., A ₂ 5; A ₅ i, A ₅ 2 ... A ₅₅ is equal in each star Α-ι, A ₂ , ... A ₅ .

As with the radial elements An, A12, ... A15 of a star Ai, which are angularly displaced by an angle of 14.4 ° with respect to the radial elements A ₂ -i, A22 _, ... A25 of a contiguous star A ₂ , as indicated above, in the same group Gi, G2, G3, the cylinders C and pistons P of a set Bu, B12, ... B51, ... B ₅₅ are angularly displaced by an angle of 14, 4 ° with respect to cylinders C and pistons P of an adjacent set Bu, B12, ... B51, ... B ₅₅ . In other words, in the example illustrated in the figures, in particular in figure 1, in the group Gi, the cylinder C and its piston P of an assembly Bu is angularly offset with respect to the cylinder C and its piston P of the adjacent or contiguous assembly B12 and, in turn, the cylinder C and its piston P of said assembly B12 is angularly offset with respect to the cylinder C and its piston P of the adjacent or contiguous assembly B-13, etc. On the other hand, the radial element An of the star Ai is angularly offset with respect to the radial element A21 of the adjacent or adjacent star A ₂ ; and, in turn, the radial element A21 of the star A ₂ is angularly offset with respect to the radial element A31 of the adjacent or adjacent star A ₃ , etc.

In the engine architecture 100 described, the three groups Gi, G2, G3 of sets Bu, B12, ... B51, ... B ₅₅ of cylinders C and pistons P are arranged, as illustrated in the figure 2 of the drawings, surrounding the stars Ai, A ₂ , ... A ₅ . As indicated above, the axes SB-i, SB ₂ , SB ₃ pass through the respective assemblies Bu, B12, ... B51, ... B ₅₅ of cylinders C and pistons P so that, in operation, the P pistons, and C cylinders, can rotate, as described in greater detail below, with their respective axes SB-i, SB ₂ , SB ₃ . With this architecture, in operation:

- the radial elements An, A12, ... A-1 5 of the first star Ai successively receive the impulse of the pistons P respectively of the assemblies Bu, B21, B31 of the first, second and third group Gi, G2, G3 of C cylinders and P pistons,

- the radial elements A21, A22, ... A25 of the second star A ₂ receive successively the impulse of the pistons P respectively of the assemblies B-12, B22, B ₃₂ of the first, second and third group Gi, G2, G3 of cylinders C and pistons P, - the radial elements A3-1, A22,. . . A25 of the third star A ₃ successively receives the impulse of the pistons P respectively of the assemblies B-13, B23, B33 of the first, second and third group Gi, G2, G3 of cylinders C and pistons P, - the radial elements A4 -1, A42, ... A ₄₅ of the fourth star A ₄ successively receive the impulse of the pistons P respectively of the sets Bu, B ₂₄ , B ₃₄ of the first, second and third group Gi, G2, G3 of cylinders C and pistons P, and - the radial elements A5-1, A ₅₂ , ... A ₅₅ of the fifth star A ₅ successively receive the impulse of the pistons P respectively of the assemblies Bis, B25, B35 of the first, second and third Gi, G2, G3 group of C cylinders and P pistons. As a consequence of the aforementioned angular displacements between piston cylinders in adjacent assemblies Bu, B-12,. . . B5-1, ... B ₅₅ and angular displacements between radial elements An, A-12, ... Α-ι ₅ ; A21, A22, ■ ■, A25; A51, A ₅₂ ... A55 of adjacent stars, in operation, the thrust of each piston P on each radial element An, A-12, ... Α-ι ₅ ; A21, A22,. . . , A25; A51, A ₅₂ ... A55 causes the rotation of the stars Ai, A ₂ , ... A ₅ on the SA axis and also the rotation of the sets Bu, B-12, ... B51, ... B ₅₅ of cylinders C and pistons P in their respective axes SB-i, SB ₂ , SB ₃ .

The particular architecture of C cylinders P rotating pistons described without crankshaft, camshaft and connecting rods. This important advantage allows a significant mechanical simplification of the assembly, with considerable savings in manufacturing and maintenance costs, and greater mechanical efficiency of the engine. The fact of dispensing with a camshaft is not a problem, since the valves can also be operated through solenoid valves.

To ensure a good reception of the piston thrust P on the radial elements An, Ai ₂ , ... A15; A ₂ i, A ₂₂ , A ₂₅ ; A51, A ₅₂ ... A ₅₅ , the outermost ends EA of the radial elements An, Ai ₂ , ... Ai ₅ ; A ₂ i, A ₂₂ , ..., A ₂₅ ; A51, A ₅₂ ... A ₅₅ and the respective outermost ends EP of the pistons P are configured in a complementary hemispherical shape. More specifically, the outermost end EA of each radial element An, Ai ₂ , ... Ai 5; A ₂ i, A ₂₂ , A ₂₅ ; A51, A ₅₂ ... A ₅₅ has a hemispherical cavity EA _t that defines a concave reception area, and the respective outermost end EP of each piston P has a spherical semi-spherical element EP _t , as shown in the figure 9, in addition to the concave reception area EA _t of the EA end of the radial elements An, A- | ₂ , ... A- | ₅ ; A ₂ i, A ₂₂ , ..., A ₂ 5; A5i, A5 ₂ . . . A55

Other configurations of complementary shapes of the EA ends of the radial elements An, A- | ₂ , ... Α-ι ₅ ; Α ₂ ι, A ₂₂ , ..., A ₂₅ ; A51, A ₅₂ ... A ₅₅ and the EP ends of the pistons P provided that

configurations allow, in operation, the EP end of the pistons to be temporarily housed sequentially in the corresponding cavity EA _t of the EA end of the radial elements An, A- | ₂ , ... A- | ₅ ; A ₂ i, A ₂₂ , ..., A ₂₅ ; A51, A ₅₂ ... A55, as shown in Figures 4 and 5 of the drawings. It is evident that the shapes can be inverted, such that, in operation, the EA end of the radial elements An, A- | ₂ , ... A- | ₅ ; A ₂ i, A ₂₂ , ..., A ₂₅ ; A51, A ₅₂ ... A55 temporarily stay sequentially in the corresponding cavity EA _t of the EP end of the pistons. This configuration is given by way of example for proper reception, by the radial elements An, A- | ₂ , ... A- | ₅ ; A ₂ i, A ₂₂ , ..., A ₂₅ ; A ₅ i, A ₅₂ ... A55, of the corresponding pistons P of the assemblies Bu, B- | ₂ , ... B51,. . . B55 in the respective groups Gi, G ₂ , G3 in their expansion race, causing the rotation of the central output shaft SA to which the stars Ai, A ₂ , ... A ₅ are connected, or are in solidarity. This rotation of the central output shaft SA used to produce electrical power or mechanical propulsion, for example. However, other applications are not ruled out. A turning range for this architecture is 25 - 3000 revolutions per minute. Figure 6 shows in detail the central body CC of a set Bu, B- | ₂ , B-13, Bu, B-15 of the group G1 of cylinders C and pistons P, where the axis SB-i, the hole 55 for the exit of exhaust gases, the radial cavities 15 to accommodate the spark plugs, and radial couplings 25 to receive the respective cylinders C.

The engine 100 of the example described further includes a cooling system configured to evacuate the heat created in the assemblies Bu, B-I2,. . . B51,. . . B55 of sets of cylinders C and pistons P. In the example shown, cooling is by forced air. To do this, fans are located that are located on the outside of each central body of the assemblies Bu, B12, ... B51, ... B ₅₅ which are intended to propel air by circulating it between the cylinders C. The cooling is completed with finned structures Ca in each cylinder C, as shown in Figure 8. The finned structures Ca are arranged radially in the cylinders C to favor cooling of the assembly. A lubrication system is also available. The lubrication system is configured for the circulation of oil, by means of pumps, from a tank to the cylinders C for the lubrication of the pistons P when they move during the operation of the engine 100. In Figure 3 of the drawings it can be seen that Each central body CC includes an oil inlet conduit 30 which is connected to each cylinder C and a return conduit 35 of lubricating oil. There are also filters designed to remove impurities that the oil may contain. Once the lubrication function is completed, the oil is returned to the tank through said return line 35, closing the circuit of the lubrication system. This system allows to guarantee the mechanical reliability of the elements in contact and with relative movement.

In the specific example described and shown in the figures, the pistons P are driven by internal combustion. However, other drive modes are possible for the displacement of the pistons P, such as hydraulic drive, magnetic drive, etc.

The example of the motor with magnetic drive is advantageous since it does not require fuel. The magnetic actuation of the pistons P can be carried out, for example, by using high-power neodymium electromagnets arranged at the ends of the pistons P. Through an alternative low-consumption electric pulse in each of the pistons P, simultaneous attraction and repulsion can occur such that each piston P moves alternately according to the impulse and repulsion that occurs. If an electric current generator is available, it would incorporate sets Ai, A ₂ , ... A _n of radial elements An, A-12, ... Α-ι ₅ ; A21, A22,. . . , A25; A51, A ₅₂ ... A55 coupled or integral with its housing, distributed radially. Thus, in operation, the generator adequately receives the impulses of the pistons P simultaneously and continuously causing the rotation of its rotor and consequently generating electric current of an appropriate magnitude thanks to the magnetism produced by the electromagnets.

The rotation of the radial elements An, A-12, ... Α-ι ₅ ; A21, A22, ..., A ₂ 5; A ₅ i, A ₅ 2.. . A55 of the stars Ai, A ₂ , ... A ₅ , or the generator, if available, and the cylinders C and pistons P of the assemblies Bu, B-12,. . . B5-1, ... B ₅₅ is synchronized by means of gears, not shown in the drawings. These gears are mounted in solidarity or coupled to the axes SB-i, SB ₂ , SB ₃ of each group Gi, G2, Gs of sets Bu, B-12,. . . B5-1, ... B ₅₅ of sets of C cylinders and P pistons.

The engine parts 100 described may be made of any suitable material, such as aluminum, duralumin, aeronautical aluminum, aluminum alloys AL2631, 2521, and others, titanium, steel in its different compositions, composite materials, such as carbon fiber, Kevlar, fiberglass, and any form of natural or synthetic fiber.

With the described architecture, an engine is obtained that is capable of operating with an efficiency of the order of 85%, compared to the typical efficiency of conventional motors, which does not exceed 45% at best. In cases where the energy supplied by the engine 100 is greater than that required by a network or by users, excess energy can accumulate in the form of compressed air at a variable pressure of between 200 and 500 atmospheres, for example. Compressed air can

stored in pressure-resistant cylinders and supplied at low pressure to cylinders C at a sufficient pressure to provide adequate force to move them. Thus, the engine 100 would stop working in this case with the fuel used in the normal process. Although only a few particular examples of the present radial engine have been described herein, the person skilled in the art will understand that many other alternative examples and / or uses are possible, as well as obvious modifications and equivalent elements. The present description therefore encompasses all possible combinations of the specific examples that have been described. The scope of the present description should not be limited to such examples, but should be determined only by an appropriate reading of the appended claims.

The numerical signs relating to the drawings and placed in parentheses in a claim are given solely to try to increase the understanding of the claim, and should not be construed as limiting the scope of protection of the claim.

Claims

1. Radial motor (100), comprising a plurality of assemblies (Ai, A ₂ , ... A _n ) of radial elements (An, A ₁₂ , ... A _1n ; A ₂ i, A ₂₂ ... A _2n ; A _m1 , A _m2 ... A _mn ), the radial elements being joined (An, A- | ₂ , ... Ai _n ; A ₂ i, A ₂₂ ... A _2n ; A _m -i , Am2 -. A _mn ) to a common output shaft (SA), and a plurality of groups (Gi, G ₂ , Gk) with a plurality of sets (Bu, B- | ₂ , ... Bij; B ₂ i, B ₂₂ ... B _2j ; B¡1, B¡ ₂ , ... B) of cylinders (C) and pistons (P) connected to corresponding shafts (SB-i, SB ₂ ... SB¡) , the assemblies (Ai, A ₂ , ... A _n ) of radial elements being arranged (An, A- | ₂ , ... Ai _n ; A ₂ i, A ₂₂ ... A _2n ; A _m i, A _m2 ... A _mn ) with respect to the aforementioned sets (Bu, B- | ₂ , ... Bij; B ₂ i, B ₂₂ ... B _2j ; Β _Μ , B¡ ₂ , ... By) of cylinders (C) and pistons (P) so that, in operation, one end (EA) of the radial elements (An, A ₁₂ , ... A _1n ; A ₂₁ , A ₂₂ ... A _2n ; A _m1 , A _m2 ... A _mn ) is contacted sequentially te by one end (EP) of a piston (P) of a respective set (Bu, B- | ₂ , ... Bij; B ₂ i, B ₂₂ ... B _2j ; Β _Μ , B¡ ₂ , ... By) of cylinders (C) and pistons (P) causing the common output shaft (SA) to rotate. 2- Radial motor (100) according to claim 1 characterized in that the pistons (P) of the assemblies (Bu, B- | ₂ , ... Bij; B ₂ i, B ₂₂ ... B _2j ; BM, B¡ ₂ , ... By) of sets of cylinders (C) and pistons (P) are driven by at least one of fuel combustion, or hydraulically, or magnetically. 3- Radial motor (100) according to claim 1 or 2, characterized in that said radial elements (An, A- | ₂ , ... Ai _n ; A ₂ i, A ₂₂ ... A _2n ; Am-i, A _m2 ... A _mn ) are part of an electric current generator. 4- Radial motor (100) according to any of the preceding claims, characterized in that it comprises five sets (Ai, A ₂ , A ₃ , A4, A ₅ ) of radial elements (An, Ai ₂ , .. Am; A ₂ i, A ₂₂ ... A _2n ; A _m i, A _m2 .. A _m n). 5- Radial motor (100) according to any of the preceding claims, characterized in that at least one set (Ai, A ₂ , ... A _n ) of radial elements (An, A ₁₂ , .. A _1n ; A ₂ i, A ₂₂ ... A _2n ; A _m1 , A _m2 ... A _mn ) comprises five radial elements (An, A- | ₂ , ... A- | ₅ ; A ₂ i , A ₂₂ ... A ₂₅ ; ... A51, A ₅₂ ... A ₅₅ ). 6- Radial motor (100) according to any of the preceding claims, characterized in that the assemblies (Bu, B- | ₂ , ... Bij; B21, B ₂₂ ... B _2j ; B¡1 , B¡ ₂ , ... B) each comprise five sets of cylinders (C) and pistons (P). 7- Radial motor (100) according to any of the preceding claims, characterized in that it comprises three groups (Gi, G ₂ , G3) of assemblies (Bu, Bi ₂ , ... Bij; B21, B ₂₂ ... B _2j ; B¡1, B¡ ₂ , ... B) of sets of cylinders (C) and pistons (P). 8- Radial motor (100) according to any of the preceding claims, characterized in that the radial elements (An, A- | ₂ , ... A _1n ; A ₂₁ , A ₂₂ ... A _2n ; A _m1 , A _m2 ... A _mn ) of a group (Ai, A ₂ , ... A _n ) are angularly displaced from the radial elements (An, A- | ₂ , ... Αι _η ; A21, A ₂₂ ... A _2n ; A _m1 , A _m2 ... A _mn ) from another group (Ai, A ₂ , ... A _n ). 9- Radial motor (100) according to claim 8, characterized in that a radial element (An, A- | ₂ , ... Αι _η ; A21, A ₂₂ ... A _2n ; A _m - i, A _m2 ... A _mn ) of a set (Ai, A ₂ , ... A _n ) is angularly offset from a corresponding radial element (An, A- | ₂ , ... Ai _n ; A ₂ i , A ₂₂ ... A _2n ; A _m i, A _m2 ... A _mn ) of an adjacent set (Ai, A ₂ , ... A _n ) an angle of 14.4 °. 10- Radial engine (100) according to any of the preceding claims, characterized in that the cylinders (C) and pistons (P) of an assembly (Bu, B- | ₂ , ... Bij; B ₂ i, B ₂₂ ... B _2j ; B¡1, B¡ ₂ , ... B) are angularly offset with respect to corresponding cylinders (C) and pistons (P) of an adjacent set (Bu, B- ₁₂ , ... Bij; B ₂₁ , B ₂₂ - .. B _2j ; B, B¡ ₂ , ... 1 1 - Radial motor (100) according to claim 10, characterized in that the cylinders (C) and pistons (P) of an assembly (Bu, B- | ₂ , ... Bi _j ; B ₂ i, B ₂₂ ... B _2j ; BM, B¡ ₂ , ... By) are angularly offset with respect to corresponding cylinders (C) and pistons (P) of a contiguous assembly (Bu, Bi ₂ , ... Bij ; B ₂₁ , B ₂₂ ... B _2j ; B _n , B¡ ₂ , ... By) an angle of 14.4 °. 12- Radial motor (100) according to any of the preceding claims, characterized in that the ends (EA) of the radial elements (An, A ₁₂ , ... A _{1 n} ; A ₂₁ , A ₂₂ . .. A _2n ; A _m1 , A _m2 ... A _mn ) and the respective end (EP) of the pistons (P) of the assemblies (Bu, B- | ₂ , ... Bi _j ; B ₂ i, B ₂₂ ... B _2j ; B¡ ₁ , B¡ ₂ , ... By) of the cylinder (C) and piston (P) assemblies are configured to be temporarily housed at least partially with each other sequentially. 13- Radial motor (100) according to any of the preceding claims, characterized in that the number of groups (Gi, G ₂ , G _k ) is equal to the number of radial elements (An, A- | ₂ , ... Ai _n ; A ₂ i, A ₂₂ ... A _2n ; A _m i, A _m2 ... A _mn ). 14- Radial motor (100) according to any of the preceding claims, characterized in that the number n of radial elements (An, A ₁₂ , ... A _{1 n} ; A ₂₁ , A ₂₂ ... A _2n ; A _m1 , A _m2 ... A _mn ) in each group (Ai, A ₂ , ... A _n ) is the same.