FR2847940A1 - Machine, e.g. i.c. engine, has at least one helicoid rotary piston with spiral of varying pitch in compression, combustion and expansion sections - Google Patents

Abstract

The machine has two main interacting components (1, 2) inside a housing (3). At least one of the main components is a rotary helicoid piston or motor rotor having a variable characteristic in at least one of its portions, i.e. its pitch, the direction of the pitch, its inner or outer radius, or the thickness of its spirals, giving different levels of compression in its compression, combustion and expansion sections. The rotary piston interacts, for example, with a second rotary piston, with its variable pitch spiral forming compartments (5, 6, 7) of different volumes along its length. Variants of the design can have a rotary piston interacting with a spiral inner surface in the housing or have pistons of varying radius.

Description

The present invention relates to a machine with at least one rotary piston of

  variable helical shape ensuring at least one of the intake and compression functions,

  combustion, expansion and exhaust.

  The most conventional engine is the piston engine in which each piston performs a linear movement. In 1954, the Wankel rotary piston engine appeared, which carried out a movement of the piston and working fluid in 2 dimensions.

  All these motors carry out a working fluid treatment cycle in several separate times. In these engines the energy of the working fluid is not fully converted into mechanical energy due to the following factors: the filling rate is not very good; at high speed the working fluid does not have time to burn at top dead center; indeed, the piston quickly descends from where the need for advance ignition; the pressure cannot reach its maximum. The expansion being brutal, the temperature drops quickly as well as the pressure, the torque is therefore reduced; the volume of the working fluid before exhaust being equal to the volume of working fluid admitted when the exhaust valve opens, there remains more than 50% of energy in the working fluid and moreover it is necessary to supply l energy to evacuate burnt gases; there is a lot of friction due to complicated mechanics: back and forth pistons, camshafts, etc. Finally, the speed and therefore the power is limited by the movement of the valves. The object of the invention is therefore to make better use of the energy of the working fluid by a more continuous process and to present a simple structure at reduced cost price and of small volume. This machine, in which the working fluid will evolve in three dimensions, essentially consists of at least one helical rotary piston (1), called motor rotor, of which at least one of the characteristics of the helicode varies over at least one of its portions: the pitch (p), the direction of the pitch, the inner radius (r), the outer radius (R), the thickness of the flanks (e), the section of the flanks, the number of nested propellers, the radius 30 of the hollow part (re), the proportion of the parts allocated to the different functions, in particular the fact that the expansion ratio is greater than the compression ratio, and rotating in a working chamber (3) such as the work is sucked in at the end (8) of the rotary piston (1) by the rotation of the helicode, there is compartmentalized by at least one additional cooperating member on at least a portion of the rotary piston (1), the compartments (5) becoming smaller and smaller (6), the working fluid l will be compressed and then burned by a candle (4), finally it will seek to gain volume after combustion, and will descend into the lower compartments (7) larger and larger by providing torque to the rotary piston and s finally escape in (9). -2

  This device cannot work alone because the compartments (5, 6, 7) are not isolated. Indeed, there is only one volume contained inside the helicode. It is therefore necessary to insulate the compartments (5, 6, 7) by at least one additional cooperating member. This insulation can be achieved in several ways: Basic solution: a second helical rotor (2), motorized or not, is juxtaposed, having a reverse pitch and turning in the opposite direction, possibly parallel to the first.

  Variant A: it is identical to the basic solution except that the two rotors (1 and 2) are motor and are therefore symmetrical.

  Variant B: a second helical rotor (2) (juxtaposed or not) is juxtaposed with a pitch 10 in the same direction and rotating in the same direction and therefore inclined relative to the first.

  Variant C: a second hollow helical rotor (2) is juxtaposed (motor or not), the first rotor entering inside the second. The hollow rotor can be fixed.

  Variant D: a chaser is juxtaposed driving shims (13) between the consecutive flanks of the helicode parallel to the axis of the rotor or of the gears.

  Variant E: wedges or compartments are introduced which evolve between the consecutive flanks of the helicode and which are recovered at one end to be reintroduced at the other. In the basic solution (Figures 1, 2 and 3) the machine essentially consists of three parts: the helical rotary piston known as the motor rotor (1) because it is in contact with the working fluid, the secondary rotor (2 ) and the housing (3).

  The axes of the two rotors (1) and (2) are parallel, they rotate in opposite directions, the pitch of the helicodes is reversed between the two rotors.

  The 2 rotors can be motor or not, here it is assumed that the main rotor (1) is motor and that the secondary rotor (2) is follower (non-motor).

  The 2 rotors (1) and (2) must interpenetrate to form watertight compartments on the rotor (1) with a minimum of play. The rotor compartments (1) are therefore delimited by the rotor shaft (1) itself and two of the sides of the helicopter (not necessarily contiguous), the casing (3) all around, the rotor (2) on the interpenetration zone. 30 It is possible to position one or more spark plugs (4) in the housing (3), depending on the type of working fluid and the type of explosion that is desired (slow or fast). The working fluid can remain several turns with this same helical pattern, until the combustion is complete.

  It is advantageous in terms of efficiency to relax the working fluid slowly enough so that the temperature, and therefore the pressure, drops (expansion to be carried out over several turns). Likewise, it is advantageous for the outlet volume to be greater than the inlet volume, which makes it possible to recover the residual energy of the fluids. The rotor (1) can be hollow to facilitate cooling by circulation of a fluid inside (water -3 or air for example). The follower rotor (2) may have sealing segments on the outside of the helicode, and on the faces of the sides of the helicode near the outside radius. The volume of the rotor (2) can thus be isolated from that of the rotor (1) to allow the introduction of lubricant which will serve to lubricate the rotor (1) without the lubricant being in contact with the working fluid. Games must take into account the expansion of the pieces.

  This play can be reduced by introducing a slight negative offset on the surface of the helicode's flanks. The two rotors must rotate in opposite directions, so it is necessary to provide for example a gear (12) on each rotor so that they mesh together. The casing (3) can be made in one part if the outside radius of the rotors is constant, or in several parts in the opposite case in order to be able to fit the two rotors. Otherwise, the rotors must be made in several parts. Its material must be studied in compatibility with that of the rotors to minimize the effects of expansion. The same material can be used for all parts. This housing can be cooled by air with fins and possible ventilation, or by circulation of water inside. 15 Variant A: this machine can also be produced with the two rotors (1) and (2) motors, the displacement is then double. The helicode shapes (material / vacuum) must then be symmetrical since a part of the rotor material (1) must correspond to a vacuum part of the rotor (2) and vice versa. The intake and exhaust pipes 20 then relate to the two rotors. The torque is to be taken on one rotor or the other.

  Variant B: it is represented by figure 4. It uses two rotors (1) and (2) turning in the same direction and having a pitch in the same direction. The two rotors must then be inclined relative to each other so that the threads can fit together. The forms are more complex but the games are then reduced. The rotors must then take a hyperbolic form of revoution with possibly a generating line.

  The smallest zone is located at the common perpendicular of the two axes (combustion zone). On both sides, the outside radius increases (intake and exhaust). The 2 rotors can be powered. It is necessary to calculate judiciously the profile of the rotors because the angle of inclination must preferably remain constant.

  Variant C: it is represented by FIGS. 5 and 11. It involves two rotors, but the secondary rotor (2) is larger than the main rotor (1) and has an internal helicode, the cooperating members then being of the internal axis. The rotor (1) is then housed in the rotor (2). These two rotors rotate around their axis in the same direction with steps in the same direction (or different as in variant B). A good configuration is that the outside diameter of the large rotor (2) is twice the outside diameter of the rotor (1). In this case, the rotor (2) will have an internal double helix whose pitch will be equal to twice the pitch of the rotor (1). In a variant shown in FIG. 6, it is the hollow rotor which becomes motor (1) and fixed to process the working fluid itself, the smaller rotor (s) (2) become followers and then turn -4 on their axis which itself rotates inside the rotor (1) (like a satellite) (fig.11). The element (16) located between the parts (1) and (2) is then mobile and serves as a motor and planetary axis for the satellites (2). This variant has the advantage of very little play, the outer spokes being tangent to each other and the inner spokes being tangent to each other.

  Variant D: a chaser is juxtaposed with the rotor (1) as shown in FIG. 7.

  This chaser consists of shims (13) which are interposed between the sides of the helicode of the rotor (1). They are driven on a chain rotating around at least one pulley (14). It is preferable that the shape of the shims is constant, which requires a constant pitch. On the other hand, the wedges, if they remain at the same distance from the axis of the rotor (1), can perfectly fit the gap located between two sides of the helicode. They can have sealing rings and provide lubrication for the rotor (1). The empty return of the blocks of the chaser can be used to compartmentalize a second head-to-tail rotor of the first or a pattern like that shown in Figure 8.

  The chaser can be replaced by one or more gears, the teeth of the gears constituting the shims which compartmentalize the rotor (1). The axis of the gears can be perpendicular to the axis of the rotor (1). A gear can be represented by the pulley (14) integral with shims (13) around it.

  Variant E: shims, compartments or objects intended to create compartments are introduced through one end of the rotor (1), between the sides of the helicoid. These objects can be driven by the helicode, by the casing or by intermediate parts. They are collected at the other end and reintroduced at the entrance. As before, the empty return of these objects can be used to compartmentalize a second head-to-tail rotor of the first or a pattern like that shown in FIG. 8.

  Here are now different technical characteristics which can be added to the solutions already presented: - The shape of the rotor (1) is helical. However, throughout its axial profile, different characteristics may vary: the pitch (p) (which can even be reversed), the outer radius (R), the inner radius (r), the thickness of the sides of l helicode (e), the section of the 30 sides of the helicode which can have any pattern between (r) and (R), all this in order to obtain a form improving the efficiency (admission, compression, combustion, relaxation, and / or exhaust) and games. The helicode can be double, triple or n-threaded.

  It can have on one or more sections given several blades like a fan propeller (in particular at the intake and at the exhaust). All these characteristics can be found separated or mixed throughout the different sections of the rotor (1). This rotor can be produced in several pieces. It can have the helical pattern on the outside of the tree or inside a hollow cylinder.

  - To this rotor can be added any number of motor rotors or not. Figures 9 and 10 show solutions with 3 and 4 rotors. These rotors can be arranged in a triangle, square, hexagon or any shape. At least one of the rotors is motor but all the others can be motor or follower or constitute a fixed part like the rotor (1). They can have all the characteristic possibilities of the rotor (1), they can turn in the same direction or in the opposite direction, have an identical or opposite pitch. The casing can possibly be movable around its axis. All these rotors can have lengths different from the first, be whole or represent only sections, have an axis parallel to the rotor (1) or not. These rotors can have their helical pattern outside a cylindrical shaft or inside a hollow cylindrical shaft. In the latter case, they can contain any number of 10 rotors. The same rotor can be compartmentalized by several rotors creating several compartments on a turn.

  - The rotors and housing can be made in one or more pieces, in particular for bringing in the parts.

  Each intake, compression, combustion, expansion, exhaust function can be carried out with separate sections. An embodiment in several sections is shown in Figure 8 o the rotors (1) and (2) are made in two parts, one for the intake-compression, the other for the expansion-exhaust part, a combustion chamber is between the two sections. This is valid for all the variants described. - All the solutions and variants described can be combined with one another, in whole or in part.

  - Part of the kinetic energy of the exhaust fluid (9) can be recovered by fitting an impeller (10) (turbine type propeller) to recover the torque on the motor rotor (1) .

  - It is also possible to put a fan type propeller (10) at the intake (8) to cause precompression of the inlet fluid and thus improve the filling rate. - When the working fluid intake area is not fixed, the rotor intake area (1) can be extended by a sleeve (17) which connects the air inlet (mobile) to the axis (fixed) 30 of the rotor and which causes air to enter directly into the rotor (1).

  - The energy intended to drive the coolant can be supplied directly by one or more of the rotors, in particular a fan integrated in the rotor can ensure the movement of the coolant.

  - When using several motor rotors and under certain operating conditions (reduced torque), the working fluid inlets on certain rotors can be closed in order to obtain a lower displacement and consumption.

  - Holes, valves, shunts or valves can be introduced in the helicodes of the rotors or in the casing to modify the cycle of the working fluid (time, pressure, richness, torque, speed, etc.). -6

  - This invention can be carried out with lubrication and sealing (total or partial).

  It can also be carried out using leaks (moderate due to the multiplicity of compartments and therefore small pressure differences) to ensure an air cushion between the different rooms (1, 2 and 3) (partial or total) and therefore operation with reduced wear.

  - Regarding expansion, identical or suitable materials can be used to limit the effects of expansion. The materials can be chosen heavy or rather light to limit the gyroscopic effects and obtain better acceleration. The constant temperature for each phase of the working fluid treatment cycle 10 (intake, compression, explosion, expansion, exhaust) can considerably increase the efficiency.

  - This invention can be used to make engines, but it can also only be used with the first section to make compressors, only with the last section to make regulators.

  - This invention can partially or completely improve the operation of reactors, turbines or other machines involving the compression or expansion of fluids. - This invention, when used as an engine can operate with different types of fuel such as gasoline or diesel, whether of mineral or vegetable origin.

  - At the exhaust, the profile of the propeller and the casing on which there are fixed partitions (15) can make it possible to recover all or part of the kinetic energy of the working fluid by reaction on a fixed support.

  - Lubrication and tightness can be achieved by the follower elements or 25 motors whatever their shape (rotor, shim, etc.). Sealing can be achieved by installing segments (elastic metal pieces) on the faces and around the sides of the helicode flanks. Between two segments, lubrication can be ensured. The sealing rings can be threaded over part of the helicode and pushed so that they follow the profile.

  - It is possible to place as many candles as necessary, the ignition can also be spontaneous and continuous insofar as one can carry out a small communication between the combustion chambers to obtain a strip of thin working fluid which burns in permanence from one end to the other on a regular basis while avoiding detonation.

  - It is possible to hollow out certain parts of the rotors to reduce their mass, for their dynamic balancing and / or to compensate for the effects of expansion.

  - It is possible to produce the various elements using several materials, in particular materials having good resistance to high temperatures in the vicinity of the combustion zone. -7

  The shapes, dimensions and arrangements of the various elements may vary within the limit of equivalents, as may the materials used for their manufacture, without changing the general conception of the invention described here.

  An embodiment of the invention is described below, by way of nonlimiting example, with reference to the appended drawings in which: FIG. 1 represents the basic solution with two helical rotors in a casing.

  Figure 2 shows a section of the basic solution which is used to support the

description of the realization.

  Figure 3 shows a top view of the basic solution.

  Figure 4 shows variant B with 2 inclined rotors parallel to pitch and identical direction of rotation. FIG. 5 represents the variant C o one rotor is contained in the other.

  FIG. 6 represents another possibility of variant C o the rotor becomes a stator. FIG. 7 shows variant D with a chase along the rotor.

  FIG. 8 represents a division of the machine into two parts with an intermediate combustion chamber.

  Figure 9 shows an assembly with 3 rotors.

  Figure 10 shows an assembly with 4 rotors.

  Figure 11 shows variant C o one rotor is contained in the other.

  Here is the detail of operation of the basic solution with 2 parallel rotors with opposite pitch and opposite direction of rotation. This solution is shown in Figures 1, 2 and 3.

  The design of the rotor (1) must comply with the following instructions: Intake: depending on the desired displacement, it is necessary to define for the intake area (8) (at one end of the rotor (1)), the outside radius (R ), the internal radius (r), the pitch (p), the thickness of the sidewalls (e) (which can be small at this point since there is no force, for example 3mm), the radius of the hollow part (re). The displacement volume will be approximately: t x (R2 - r2) x (p - e). From this volume, it is necessary to deduct about 25% of overlap 30 of the rotor (2) on the rotor (1). This volume of displacement is treated at each revolution, this is therefore to be compared with half of the displacement of a conventional engine which treats the total displacement in 2 turns. Example for R = 10cm, r = 6cm, p = 4.3cm, e = 0.3cm, the displacement is 800cm3 to which 25% of rotor cover (2) must be removed, i.e. a theoretical displacement of 600cm3 per revolution. This is to be compared with a conventional engine of 1200 cc which treats 600 cc per revolution. If we decide to run this engine at 10,000 rpm (instead of 6,000 rpm for a conventional engine) the power will be equivalent to a conventional 2 liter engine. Admission must be done for at least one full turn so that the compartment is properly closed. It is possible to add a paddle wheel (10) to achieve precompression of the working fluid and thus improve the filling rate. When the fluid inlet of the rotary piston is movable, it may be advantageous to add a sleeve (17) connecting the fluid inlet to a fixed axis, so that the working fluid penetrates directly into the rotary piston.

  Compression: Depending on the desired compression ratio (8 for a petrol engine, 5> 20 for a diesel engine), the pattern of the helicopter must be varied in zone (5) to arrive at a new compartment volume (6 ) 8 or 20 times smaller. For example for a petrol engine, a new profile of R = 10cm, r = 8.25cm, p = 2cm, e = 1cm will give for 0.75 x ir x (R2 - r2) x (p - e) = 75cm3 which is 8 times smaller than 600cm3.

  The profile of the old to the new can be changed in one helicode turn (or more or 10 less) depending on the desired compression speed, while taking care not to cause detonation. Explosion: It can only occur after the working fluid has completed a complete revolution with the new pattern in zone (6), so that the fluid does not rise towards the inlet. It is at this level that in the case of a petrol engine, one or more spark plugs (4) must be positioned in the casing (3), depending on the type of explosion that is desired (slow or fast ). The working fluid can remain several turns with this same motif, until the combustion is complete.

  Relaxation: The volume of the compartments must now increase again in zone (7) with a regular increase (or not) in the increase in volume, i.e. 20 only if we were at r and R constant, the pitch should vary depending on the square of the distance between the start and the end of the trigger. In fact, the driving effect will be produced by the fact that the pressure of the working fluid in the compartments (7) seeks to cause the fluid to evolve towards an enlargement of the compartment, therefore to rotate the helicode to move towards the exit. The enlargement of the compartment (7) must therefore be continuous. It is advantageous in terms of efficiency to relax the working fluid slowly enough so that the temperature and therefore the pressure drop (expansion to be carried out over several turns). Likewise, it is advantageous for the outlet volume to be greater than the inlet volume. Indeed, if the output volume is 50% greater than the input volume, 11% of additional energy is recovered if the expansion is adiabatic and 19% if it takes place at constant temperature. The pattern: R = 10cm, r = 5cm, p = 5.3cm, e = 0.3cm will produce a volume of 900cm3 therefore 1.5 times the input volume. This last profile must be carried out on at least one complete revolution of the helicopter.

   exhaust: when the follower rotor (2) no longer isolates the compartments (7) of the main rotor (1), the working fluid leaves (9) with another 50% of the initial energy in the form of kinetic energy, at a speed of the order of 500m / s. This energy can be recovered by installing a propeller (10) (of the fan or turbine type) to recover the torque on the rotor, or by optional installation of small obstacles (15) on the housing (3) to allow a reaction of the working fluid on a fixed part (reaction of the type -9 garden hose not held), this reaction providing additional torque on the rotor (1). The 2 processes can be combined.

  The rotor (1) must rest at each end in bearings (11) or bearings of the housing (3) for its rotation. It is preferable to locate these bearings (11) or bearings beyond the fluid intake and exhaust zones to facilitate the circulation of the working fluid. The engine torque can be recovered on this axis. The rotor (1) can be hollow to facilitate cooling by circulation of a fluid inside (water or air for example). This rotor (1) may include sealing segments on the outside of the helicode to ensure sealing.

  The follower rotor (2) must best match the shape of the motor rotor (1) throughout the area where they interpenetrate to reduce play (fig. 2 in the center). The pattern is complementary to that of the rotor (1). In the interpenetration zone, each hollow part of the rotor (1) must correspond to a part of helicode material of the rotor (2) and vice versa. For simplicity, it is good that the rotor (2) has the same dimensions as the rotor (1): not even, same internal and external radius. At the two ends, the nesting does not need to be perfect. It is in the center that it is most important because the pressure is maximum. The two pieces cannot ideally fit into each other, so there will be a clearance. This clearance can be reduced by introducing a slight negative offset on the surface of the helicode's flanks. The clearance is proportional to px (Rr) / R, it can be several tenths of 20 millimeters at the ends of the rotor (1), but is fortunately less than a tenth of a millimeter in the center where combustion takes place (p small, R large , Rr small). This follower rotor may include sealing segments on the outer part of the helicode, and on the faces of the sides of the helicode near the outer radius. The volume of the rotor (2) can thus be isolated from that of the rotor (1) to allow the introduction of lubricant which will serve to lubricate the rotor (1) without the lubricant being in contact with the working fluid. Games must take into account the expansion of the pieces. The two rotors rotate in opposite directions, it is therefore necessary to provide for example a gear (12) on each rotor so that these mesh together. There is very little effort on the drive of the rotor (2) therefore little loss of energy. It is preferable to place these two gears in the housing 30 of the intake bearings (lower temperature).

  The two rotors (1) and (2) must undergo dynamic balancing (for example by adding or removing material).

  The casing (3) can be made in one part if the outside radius of the rotors is constant, or in several parts in the opposite case in order to be able to fit the two rotors. 35 Otherwise, these are the rotors that must be made in several parts. It must include the bores of the two rotors or include liners. Its material must be studied in compatibility with that of the rotors to minimize the expansion games. The same material can be used for all parts. This housing can be cooled by air with fins and possible ventilation, or by circulation of water inside. It includes, going from -10 from the intake to the exhaust, different zones: a lubricated zone containing the two intake bearings (11) and the two drive gears (12), an intake pipe, the cylindrical zone surrounding the two rotors, an exhaust pipe, a lubricated area containing the exhaust bearings which should be thermally insulated. This housing includes one or more spark plugs (4) to the ignition zone. It must also cover the ends of the secondary rotor (2). The rotors (1) and (2) rotating in opposite directions at equal speed, the two gears (12) are identical and operate in external low-torque drive since the rotor (2) is follower. To make variant C (fig 11), coherent dimensions can be for the rotor (1) R = 5cm, r = 1.5cm, p = 2cm and for the rotor (2) R = 10cm, r = 6.5cm , p = 4cm with internal double helix (from o p = 2cm). To carry out the drive, an internal gear will be used for the hollow helicode (2), which will drive the gears of each rotor. In the case where the large rotor is fixed and processes the working fluid, with one or more follower rotors, the part (16) serves as an axis and a sun gear to support the 2 follower rotors as satellites.

  To make variant D, it is necessary to use shims (13) guided by the casing, and remaining at a fixed distance from the motor shaft. Thus the profile of the holds is constant and perfectly matches the interval between two sides of the helicopter. These shims can easily have sealing segments and provide lubrication between these segments. They must be connected together by a chain type mechanism rotating on one or more pulleys (14).

  This invention offers the following advantages: reduced dimensions and prices at equivalent power, but above all the efficiency is markedly improved. Indeed, the filling rate can be greater than 100% since the working fluid can be easily pressurized at the intake. The working fluid can be compressed at the ideal speed by the optimum choice of the design of the helicode. The working fluid can be burned for the desired time and thus reach a higher temperature and pressure. The working fluid 30 can be gradually expanded so as not to cause the temperature (and therefore the pressure) to drop, but above all the expansion can be carried out on a ratio greater than the compression ratio, it is therefore possible to recover additional energy by compared to a conventional engine. Finally, the kinetic energy of the working fluid at the exhaust can be partially recovered by reaction on the casing or by a turbine. These gains 35 associated with reduced friction, can represent a yield gain of the order of 30%. In addition, since the speed of this type of machine is not limited, the power supplied can easily be very large. It can also rotate at low speed, which means that its speed range allows it to use fewer gear ratios. -11

  The working fluid being in different neighboring states between the different compartments, this therefore offers the advantage of having a lower pressure difference between compartments and therefore of minimizing possible leaks.

  In the basic solution and variant C, the moving parts have a relatively low speed between them. This allows reduced wear and ease of sealing. -12

Claims (19)

  1) Rotary piston machine of variable helical shape ensuring at least one of the compression, combustion and expansion functions, characterized in that it consists of at least two cooperating members including at least one helical rotary piston (1) , called motor rotor, of which at least one of the characteristics of the helicode varies over at least one of its portions: the pitch (p), the direction of the pitch, the internal radius (r), the external radius (R), l thickness of the sides (e), the section of the sides, the number of nested propellers, the radius of the hollow part (re), the proportion 10 of the parts allocated to the different functions, in particular the fact that the expansion ratio is higher than the compression ratio, and rotating in a working chamber (3) matching the external envelope of the cooperating members, such that the working fluid is sucked therein at the end (8) of the rotary piston (1) by rotation of the helicode, is compartmentalized by the ego ns an additional cooperating member on at least a portion of the rotary piston (1), the compartments (5) becoming smaller and smaller (6), the working fluid will be compressed then after combustion, it will seek to gain volume, and will descend into the lower compartments (7) larger and larger, supplying torque to the rotary piston and escaping at (9).   2) Machine according to claim 1, characterized in that one of the additional cooperating members compartmentalizing the rotary piston (1) on at least a portion is a second motor rotor of the helical rotary piston type (2) matching the shape of the first on at least one of its portions.   3) Machine according to any one of claims 1 and 2 characterized in that one of the additional cooperating members compartmentalizing the rotary piston (1) on at least one portion is a rotor of helical non-motor shape (2) matching the shape of the first on at least one of its portions.   4) Machine according to any one of claims 1 to 3 characterized in that the cooperating members consist of at least two helical rotors (1) and (2), at least one of which is a motor of the helical rotary piston type , which rotate in opposite directions two by two, the pitch of their helicode being opposite to each other.   5) Machine according to any one of claims 1 to 4 characterized in that the cooperating members consist of at least two helical rotors (1) and (2), at least one of which is a motor of the helical rotary piston type , which rotate in the same direction, the pitch of their helicode being in the same direction, their axes being inclined two by two. 35 6) Machine according to any one of claims 1 to 5 characterized in that the cooperating members consist of at least two helical rotors (1) and (2), at least one of which is of the hollow helical rotary piston type with an interior helicode, the relative movement of the cooperating members is of the internal axis type. -13   7) Machine according to any one of claims 1 to 6, characterized in that one of the additional cooperating members compartmentalizing the rotary piston (1) on at least a portion, consists of the teeth of at least one gear, teeth constituting wedges coming to be inserted between the sides of the rotor helicode (1).   8) Machine according to any one of claims 1 to 7, characterized in that one of the additional cooperating members compartmentalizing the rotary piston (1) on at least a portion consists of objects introduced at one end of the rotor (1) between the sides of the helicode and recovered at the other end and reintroduced at the entrance.   9) Machine according to claim 8, characterized in that one of the additional cooperating members 10 compartmentalizing the rotary piston (1) on at least a portion consists of a chaser consisting of shims (13) interposed between the sides of the rotor helicode (1) and driven by a chain type device rotating on at least one pulley (14).   10) Machine according to any one of claims 1 to 9, characterized in that at least one of the rotors is fixed, the relative movement of the cooperating members being unchanged.   11) Machine according to all of claims 1 to 1 0, characterized in that the housing (3) is driven in a rotational movement, the relative movement of the cooperating members being unchanged.   12) Machine according to any one of claims 1 to 11, characterized in that at least one rotor is provided with impeller (10) at at least one of its ends, wheels intended to ensure at least one of following functions: precompression of the working fluid at the inlet, recovery of the kinetic energy of the working fluid at the outlet, cooling. 13) Machine according to any one of claims 1 to 12 characterized in that the circulation of the working fluid is modified by at least one device of the valve type blocking at least one orifice in particular to use fewer engine pistons when this is not necessary.   14) Machine according to any one of claims 1 to 13 characterized in that at least one cooperating member provides sealing and lubrication on at least a portion of at least one rotary engine piston (1).   15) Machine according to any one of claims 1 to 14 characterized by the establishment in the exhaust zone (9) of at least one fixed partition (15) allowing to recover part of the kinetic energy of the fluid working by reaction on a fixed support. 16) Machine according to any one of claims 1 to 15 characterized by the contacting of the working fluid part in combustion with that which has just been compressed to obtain continuous combustion.   17) Machine according to any one of claims 1 to 16 characterized in that the cooperating members are made in several sections, one performing the function of -14 compression, the other the expansion function, a combustion chamber intermediate between the two sections.   18) Machine according to any one of claims 1 to 17 characterized by the establishment at the end (8) of at least one of the motor rotors of the helical rotary piston type 5 (1), of a sleeve (17 ) which connects the fluid inlet, when it is mobile, to the fixed axis of the rotor so that the fluid enters directly into the rotor.   19) Machine according to any one of claims 1 to 18 characterized in that the helical rotary piston (1) is fixed, hollow, serves as a housing, has an interior helicode with several nested propellers, and that at least one cooperating organs is a smaller helical rotor (2), placed inside the piston (1), which rotates around its axis which itself rotates around the axis of the piston (1), the movement of cooperating members being on an internal axis, the part (16) closing the gap between the rotors (1) and (2) being in rotation, serving as a sun gear for the rotor (2) and delivering the engine torque.