WO2022259147A1 - Moteur à explosion rotatif et procédé de combustion associé - Google Patents
Moteur à explosion rotatif et procédé de combustion associé Download PDFInfo
- Publication number
- WO2022259147A1 WO2022259147A1 PCT/IB2022/055298 IB2022055298W WO2022259147A1 WO 2022259147 A1 WO2022259147 A1 WO 2022259147A1 IB 2022055298 W IB2022055298 W IB 2022055298W WO 2022259147 A1 WO2022259147 A1 WO 2022259147A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compartment
- chamber
- combustion
- inlet
- exhaust
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 100
- 238000009841 combustion method Methods 0.000 title claims description 3
- 238000004891 communication Methods 0.000 claims abstract description 37
- 239000000446 fuel Substances 0.000 claims abstract description 34
- 230000001590 oxidative effect Effects 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims description 90
- 239000012530 fluid Substances 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000567 combustion gas Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 abstract 3
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B31/00—Component parts, details, or accessories not provided for in, or of interest apart from, other groups
- F01B31/14—Changing of compression ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
- F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F01C1/3446—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0827—Vane tracking; control therefor by mechanical means
- F01C21/0836—Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/18—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/02—Methods of operating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/04—Charge admission or combustion-gas discharge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/08—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/14—Shapes or constructions of combustion chambers
Definitions
- the invention falls within the field of internal combustion engines.
- the invention relates more particularly to a compact two-stroke internal combustion engine and to a combustion process implemented by this engine.
- Direct or indirect injection engines with piston combustion chambers are well known, in particular two-stroke or four-stroke gasoline engines. These engines comprise at least one cylindrical combustion chamber in which a piston is mounted in translation between a position in which the volume of the chamber is minimum and a position in which the volume of the chamber is maximum.
- this four-stroke engine requires a large number of parts to be machined and assembled, in particular the various elements allowing the implementation of two- or four-stroke cycles.
- fuel combustion is not optimized, in particular because the combustion pressure is not identical from one cycle to another.
- Such a motor therefore remains a complex and expensive machine to machine and assemble, bulky and difficult to adjust.
- the object of the invention is to provide a spark-ignition engine that is less bulky, simpler and less expensive to implement and that offers optimized fuel combustion.
- the invention relates to a rotary internal combustion engine which comprises:
- a frame forming a stator in which is formed a cavity extending along a longitudinal axis and having at least a first transverse dimension called the greatest width L and a second transverse dimension called the smallest width I, which longitudinal axis is stationary with respect to the frame;
- a rotor comprising a cylindrical body extending longitudinally in the cavity and rotatably mounted in the frame around the longitudinal axis, which cylindrical body has a diameter corresponding to the smallest width of the cavity and defines two zones of opposite flush with the surface of the cavity forming a bottleneck sealingly separating the cavity into an oxidizing gas inlet compartment and a burnt gas exhaust compartment, each of the inlet and exhaust compartments being delimited by said external face of the cylindrical body and said surface of the cavity, and being respectively in fluid communication with an oxidizing gas inlet and a burnt gas exhaust outlet formed in the wall of said frame;
- said rotor comprising at least one member for driving the gases contained in the compartments mounted in a longitudinal opening formed in the cylindrical body of the rotor and configured to be driven in rotation by said cylindrical body around the longitudinal axis;
- said motor comprising means for bringing the free end of the drive member flush with the internal face of the cavity by sliding said drive member into the opening in a direction perpendicular to the longitudinal axis between a minimum position in which its free end is flush with the internal face of the cavity at its smallest width I, and a maximum position in which its free end is flush with the internal face of the cavity at the level of its greatest width L, and
- an alternating combustion device comprising means for injecting and burning fuel in a combustion chamber which is fluidly connected to an oxidizing gas inlet in fluid communication with the inlet compartment, and to a burnt gas outlet in fluid communication with the exhaust compartment, via an alternating fluid communication device configured to alternately place the combustion chamber in fluid communication with the oxidizing gas inlet and the burnt gas outlet.
- the engine comprises a first and a second diametrically opposed drive members for the gases contained in the compartments and two combustion chambers, in that the alternate communication device comprises an alternate intake device configured to alternately put the fluid in communication one of the two combustion chambers with the combustion gas inlet, and an alternate exhaust device configured to alternately place one of the two combustion chambers in fluid communication with the burnt gas outlet.
- the alternate communication device comprises an alternate intake device configured to alternately put the fluid in communication one of the two combustion chambers with the combustion gas inlet, and an alternate exhaust device configured to alternately place one of the two combustion chambers in fluid communication with the burnt gas outlet.
- the supply means comprise a perimeter rail secured to the frame and provided in the cavity, which rail is adapted to guide the sliding of the organs training in the openings considered during their rotation around the longitudinal axis.
- the perimeter rail comprises two portions of rails interconnected pivotally by two respective ends of said two portions of rails, the opposite ends of the two portions of rails respectively comprising sliding members of complementary shapes and cooperating with each other to ensure the continuity of the rail perimeter.
- Each drive member comprises a guide pin projecting from a free end portion of said drive member, which pin is adapted to cooperate with a groove formed in the perimeter rail.
- the engine comprises a cylinder head whose wall delimits a part of the cavity, which cylinder head comprises an end pivotally mounted on the frame around an axis parallel to the longitudinal axis and is movable between a position minimizing the volume of the compartment of intake and a position maximizing the volume of said intake compartment.
- the engine comprises means for actuating the pivoting of the cylinder head controlled by means of control and command of the engine.
- the alternating combustion device comprises means for varying the volume of each combustion chamber.
- the intake and ejection devices respectively provided at the inlet and outlet of the combustion chambers are valves controlled by the control and command means.
- Each combustion chamber comprises a non-return valve arranged at the inlet of the combustion chamber in question.
- the intake and exhaust compartments respectively have the shape of two crescents arranged on either side of the bottleneck.
- the invention also relates to a combustion method in a rotary internal combustion engine as described above, the rotor being in rotation around its longitudinal axis and each drive member defining in the intake compartment a sub-compartment compression fluidically connected to the oxidizing gas inlet of the alternating combustion device and an inlet sub-compartment fluidically connected to the oxidizing gas inlet of the frame, and in the exhaust compartment a sub-compartment expansion valve fluidically connected to the burnt gas exhaust outlet of the combustion device alternated and an exhaust sub-compartment fluidly connected to the exhaust outlet, which method comprises the successive steps of:
- control means and motor controls simultaneously control the closing of the inlet of the first chamber and the outlet of the second chamber, and opening the inlet of the second chamber and the outlet of the first chamber;
- control means and motor controls simultaneously control the closing of the inlet of the second chamber and the outlet of the first chamber and the opening of the entrance to the first chamber and the exit to the second chamber;
- Figure 1 shows a cross-sectional view according to a first plane of the engine of the invention
- Figure 2 shows a cross-sectional view of the engine of the invention according to a second plane II-II of Figure 3;
- FIG. 3 shows a longitudinal sectional view of the engine of the invention along the plane III-III of Figure 2;
- FIG 4 shows a cross-sectional view of the engine of the invention according to the plane IV-IV of Figure 5; [0016] [Fig 5] Figure 5 shows a longitudinal sectional view of the engine of the invention along the plane V-V of Figure 4;
- Figure 6 shows a longitudinal sectional view along the plane VI-VI of Figure 1 of the alternating combustion device
- FIG. 7c Figures 7a to 7c show, through cross-sectional views of the engine of the invention according to the foreground, a kinematics of the operation of the engine. DETAILED DESCRIPTION OF THE INVENTION
- the motor 1 comprises a frame 2 preferably made of a metallic material.
- This frame 2 forms the stator of the motor 1 and comprises a longitudinal cavity 3 which extends along a longitudinal axis X, which longitudinal axis X is stationary with respect to the frame 2.
- the frame 2 has a generally cylindrical outer surface, its surface which delimits the cavity 3 has a generally elliptical shape with two transverse dimensions I, L respectively minimum I and maximum L.
- the maximum transverse dimension L will be named in the following description large width L, while the minimum transverse dimension I will be named small width.
- the surface delimiting the cavity 3 is covered with a flexible sealing material (not shown) whose function will be described later.
- the cavity 3 is formed by two longitudinal cylindrical openings, offset and of the same diameter, the distance between the two axes of the respective cylindrical openings being less than the diameter of each cylindrical opening.
- the motor 1 also comprises a rotor 6 disposed in the cavity 3 and extending longitudinally in the latter.
- the rotor 6 comprises a cylindrical body 42 comprising a central shaft 46 rotatably mounted in the frame 2 around the longitudinal axis X, and a perimeter wall 47 secured to the central shaft 46 and whose diameter at its outer surface ensures its adjustment in the frame 2 at the level of the small width of the cavity 3.
- the adjustment of the rotor 6 in the cavity 3 forms two flush zones 48a, 48b diametrically opposed and which define a bottleneck 48 at the level of the small width I of the cavity 3 between the surface 44 of said cavity 3 (that is to say the internal surface 44 of the frame 2) and the external face of the perimeter wall 47 of the cylindrical body 42 of the rotor 6.
- flush areas 48a, 48b are also covered with a flexible sealing material (not shown).
- a flexible sealing material not shown.
- the engine 1 further comprises an inlet 4 for oxidizing gases, typically the ambient air outside the frame 2, and an outlet 5 for burnt gases called exhaust gases outside the frame 2.
- inlet 4 of oxidizing gases and outlet 5 of burnt gases are formed in the wall of frame 2 and are respectively in fluid communication with the inlet compartment 7 and the exhaust compartment 8. These inlets and outlets 4, 5 are therefore arranged on either side of the bottleneck 48 and are therefore independent.
- the rotor 6 further comprises at least one gas drive member contained in the intake 7 and exhaust 8 compartments, and preferably two diametrically opposed drive members 9a, 9b. These drive members 9a, 9b are therefore driven in rotation around the axis X at the same time as the cylindrical body 42 of the rotor 6. In the remainder of the description, each drive member 9a, 9b will be referred to as a blade.
- the blades 9a, 9b are housed in two openings 10 formed in the perimeter wall 47 of the cylindrical body 42 of the rotor 6 on either side of the longitudinal axis X.
- each blade 9a , 9b has the shape of a rectangular block which extends along the longitudinal axis X, and comprises one end arranged facing the shaft 46 of the cylindrical body 42 and an opposite free end 45a, 45b in vis-à-vis the internal surface 44 of the frame 2. Furthermore, each blade 9a, 9b comprises two transverse grooves 49 opening at the level of the free end 45a, 45b, each groove 49 cooperating with a tenon 50 integral with the cylindrical body 42 of the rotor 6 and extending transversely in the considered groove 49: each blade 9a, 9b is therefore mounted to slide transversely (perpendicular to the longitudinal axis X) in the considered opening 10.
- the motor 1 also comprises means for bringing the free end 45a, 45b of the blades 9a, 9b flush with the surface 44 of the cavity 3, by sliding of said blades 9a, 9b in the considered openings 10.
- These supply means comprise two perimeter rails 21 secured to the frame 2 and provided in the cavity 3. These two rails 21 extend in two planes parallel to each other and perpendicular to the axis longitudinal X, and are arranged on either side of the blades 9a, 9b.
- each rail 21 comprises a central perimeter groove 23, said grooves 23 of the respective rails 21 being arranged facing each other.
- the feed means also comprise guide pins 22 projecting from the walls of the blades 9a, 9b along the longitudinal axis X.
- Each blade 9a, 9b comprises two opposite guide pins 22 each extending in the direction of the rail considered 21 to be housed in the groove considered 23.
- the guide pins 22 of each blade 9a, 9b cooperating with the two opposite grooves 23 of the two rails 21, the free end 45a, 45b of the blade 9a, 9b is located adjusted with the frame 2 flush with the internal surface 44 of the frame 2.
- each blade 9a, 9b comprises a sealing segment (not shown) made of a flexible material and which comes into sealed contact with the sealing material covering the internal surface of the frame 2, including at the level of the flush zones 48a, 48b.
- the free ends 45a, 45b of the blades 9a, 9b are always fitted in the frame 2, that is to say that the sealing segments formed at the level of the free ends 45a, 45b of the blades 9a, 9b are always in contact with the internal surface of the frame 2, and this whatever the position of the rotor 6 and the position of the free ends 45a, 45b of the blades 9a, 9b in the cavity 3.
- the cylindrical body 42 of the rotor 6 is hollow and has an H-shaped axial section.
- the blades 9a, 9b When the blades 9a, 9b are in intermediate sliding positions between their respective maximum and minimum positions, the latter respectively separate the intake compartment 7 into an intake sub-compartment 35 and a compression sub-compartment 34, and the exhaust compartment 8 into an expansion sub-compartment 36 and an exhaust sub-compartment 37.
- the intake 35 and compression 34 sub-compartments on the one hand, and the expansion sub-compartments 36 and exhaust 37 on the other hand are separated in leaktight manner by the sealing segments provided at the free ends 45a, 45b of the blades 9a, 9b and on the internal surface of the frame 2 delimiting the cavity 3.
- the function of these sub-compartments 34 - 37 will be described later in connection with a combustion process in the engine 1 of the invention.
- the frame 2 further comprises a movable cylinder head 24, the wall of which delimits a part of the cavity 3, and in particular delimits a part of the intake compartment 7.
- This cylinder head 24 has a section perpendicular to the longitudinal axis X an arcuate shape and is mounted at one of its ends 25 to pivot on the frame 2 about an axis parallel to the longitudinal axis X.
- the pivoting movement of the yoke 24 about its axis is controlled by a controlled device 26, in particular a jack controlled by engine control and command means, between a minimum position minimizing the volume of the intake compartment 7 and a maximum position maximizing the volume of the intake compartment 7.
- the controlled movement of the cylinder head 24 therefore makes it possible to vary the displacement of the engine 1 by varying the admissible volume of combustion gas in the intake chamber 7.
- each rail 21 comprises two rail portions 27, 28 interconnected to pivot about an axis parallel to the longitudinal axis X by two respective ends of said rail portions 27 , 28.
- one of the portions 28 is stationary while the other adjacent portion 27 is pivotally movable around its axis between a minimum position minimizing the perimeter of the rail considered 21 and a maximum position maximizing the perimeter of the considered rail 21.
- the two pivoting portions 27 of the respective rails 21 are also arranged facing each other.
- the pivoting of the two portions of rails 27 facing each other is concomitant with the pivoting of the yoke 24 and is controlled by the same controlled actuator 26.
- the opposite ends of the rail portions 27, 28 comprise sliding members 29 cooperating and interlocking with each other to ensure the continuity of each rail 21, whatever the position portions of pivoting rails 27.
- the controlled cylinder 26 comprises a piston 51 provided with a rod 52 whose end is secured to the base of a fork 53, which fork 53 comprises three arms 53a, 53b, 53c, the free ends of which are respectively secured to the two pivoting rail portions 27 and to the outer face of the yoke 24.
- the translational movement of the rod 52 of the piston 51 causes the pivoting of the cylinder head 24 and the variation of the volume of the intake compartment 7, and concomitantly the variation of the perimeter of the rails 21.
- the free ends 45a, 45b of the blades 9a, 9b remain adjusted with the internal surface 44 of the frame 2 regardless of the position of the movable bolt 24.
- the engine 1 comprises an alternating combustion device 11 comprising an oxidizing gas inlet 12 provided in the cylinder head 24 and in fluid communication with the inlet compartment 7, and an outlet of burnt gases 13 formed in the frame and in fluid communication with the exhaust compartment 8.
- the alternating combustion device 11 further comprises two combustion chambers 14, 15, which will be referred to below as first chamber 14 and second chamber 15.
- Each chamber 14, 15 includes an oxidizing gas inlet 32, 33 fluidly connected to the oxidizing gas inlet 12 of the alternating combustion device 11.
- the inlets 32, 33 of each chamber 14, 15 further comprise a valve non-return valve 40, 41 preventing the gas contained in the considered chamber 14, 15 from escaping towards the inlet compartment 7.
- Each chamber 14, 15 further comprises a burnt gas outlet 38, 39 in fluid communication with the burnt gas outlet 13 of the alternating combustion device 11 .
- the alternating combustion device 11 also comprises a device for the alternating admission of oxidizing gases into the combustion chambers 14, 15, and which is controlled by the control and command means of the engine.
- This device comprises a valve 16 movable between a first position in which it obstructs the second inlet 33 of the second chamber 15 and releases the first inlet 32 of the first chamber 14 which is then in fluid communication with the inlet compartment 7, and a second position (represented in FIG.
- the alternating combustion device 11 further comprises an alternate exhaust device for the burnt gases from the combustion chambers 14, 15, and which is controlled by the means for controlling and controlling the engine 1 .
- This device comprises two guillotine valves 17, 18 controlled by the control and command means, respectively installed at the level of the first and second outlets 38, 39 of the burnt gases from the combustion chambers 14, 15.
- the guillotine valve 17 installed at the outlet of the first chamber 14 will be called first valve 17
- the guillotine valve 18 installed at the outlet of the second chamber 15 will be called second valve 18.
- This alternating exhaust device is operable between a first position in which the first valve 17 is closed and obstructs the first outlet 38 of the first chamber 14 and the second valve 18 is open and allows fluid communication between the second chamber 15 and the exhaust compartment 8, and a second position (shown in Figure 6) in which the second valve 18 is closed and obstructs the second outlet 39 of the second chamber 15 and the first valve 17 is open and allows the fluid communication between the first chamber 14 and the exhaust compartment 8.
- the alternate intake device and the alternate exhaust device form an alternate fluid communication device 16, 17, 18 which is driven by the control and command means between a first position in which the intake devices and alternate exhaust systems are in the first position, and a second position in which the alternate intake and exhaust systems are in the second position.
- the alternating combustion device 16, 17, 18 also comprises first fuel injection and combustion means 19 in the first combustion chamber 14 and second fuel injection and combustion means 20 in the second combustion chamber 15.
- the first injection and combustion means 19 comprise a first fuel injection nozzle 54 fluidly connected to a fuel tank (not shown) and opening into the first combustion chamber 14, and a first fuel ignition device 55, for example a spark plug, provided to ignite the fuel in the first chamber 14.
- the second injection and combustion means 20 comprise a second fuel injection nozzle 56 fluidly connected to the fuel tank and opening into the second combustion chamber 15, and a second fuel ignition device 57, for example a spark plug, provided to ignite the fuel in the second chamber 15.
- the nozzles 54, 56 are configured to inject the fuel in the form nebulized.
- the alternating combustion device 16 - 18 comprises means for varying the volume 30, 31 of each combustion chamber 14, 15.
- variation means comprise first 30 and second 31 cylinders piloted by the control and command means, which cylinders 30, 31 respectively comprise a first piston 58 fitted in the first chamber 14 and a second piston 59 fitted in the second chamber 15.
- cylinders 30, 31 respectively comprise a first piston 58 fitted in the first chamber 14 and a second piston 59 fitted in the second chamber 15.
- pistons 58, 59 are mobile in translation in the considered chambers 14, 15 and thus make it possible to vary the specific volume of each chamber 14, 15.
- the volume variation means 30, 31 make it possible to vary the displacement of the alternating combustion device as needed 11 .
- the first inlet 32 of the first chamber 14 is open;
- the pressure generated by the combustion of fuel in the second chamber 15 causes the expulsion of burnt gases through the outlet 39 of this second chamber 15 into the expansion sub-compartment 36.
- the rotation of the first blade 9a then causes an increase in the volume of the intake sub-compartment 35 concomitantly with a decrease in the volume of the compression sub-compartment 34, which results in the progressive admission combustion gas through the inlet 4 of the engine 1, and through a combustion gas inlet into the first chamber 14.
- control and command means control the passage of the alternate fluidic communication device 16 - 18 from the first position to the second position, i.e.: • The first inlet 32 of the first chamber 14 is closed;
- the first outlet 38 of the first chamber 14 is open, and
- control and command means control the injection of fuel into the first chamber 14 followed by an ignition command for the oxidizing gas and fuel mixture to generate combustion of the fuel in said chamber 14.
- the pressure generated by the combustion of fuel in the first chamber 14 causes the expulsion of burnt gases by the outlet 38 of this first chamber 14 into the expansion sub-compartment 36.
- the increase in gas pressure in the expansion sub-compartment 36 drives the first blade 9a in the counter-clockwise direction.
- the movement of the first blade 9a then causes an increase in the volume of the expansion sub-compartment 36 concomitantly with a decrease in the volume of the exhaust sub-compartment 37, which results in the gradual escape of burnt gases by the exhaust outlet 5 of engine 1 .
- the rotation of the second blade 9b then causes an increase in the volume of the intake sub-compartment 35 concomitantly with a decrease in the volume of the compression sub-compartment 34, which results in the progressive admission combustion gas through the inlet 4 of the engine 1, and a combustion gas inlet in the second chamber 15.
- the blades 9a, 9b are then in the position shown in Figure 7c.
- control and command means control the passage of the alternating fluidic communication device 16-18 from the second position towards the first position, and the combustion cycle begins again.
- the engine 1 of the invention makes it possible to separate the combustion chambers 14, 15 from the compression 34 and expansion 36 gas sub-compartments. This allows constant gas compression and optimization of fuel combustion, since the latter burns in an atmosphere free of burnt gases. On the other hand, this engine 1 does not require a crankshaft or a connecting rod, since the expansion and compression of the gases is ensured by the rotor 6, and more precisely the blades 9a, 9b driven in rotation by the cylindrical body 42.
- the construction of engine 1 is thus simplified, and engine 1 is compact for a power output equivalent to conventional four-stroke engines of the same displacement, which makes it an ideal engine 1 for a hybrid vehicle. Finally, this engine 1 offers the possibility of varying its displacement, which allows the user to adapt the power requirement according to the situation encountered.
- the present invention is in no way limited to this configuration, and may have structural variations without departing from the scope of the invention.
- the rotor 6 may only comprise a single blade and the alternating combustion device a single combustion chamber.
- the alternate fluid communication device is operable by the control and command means between a first position in which the inlet and the outlet of the combustion chamber are respectively open and closed, and a second position in which the combustion chamber inlet and outlet are respectively closed and open. The combustion process in this case is simplified.
- the fluidic communication device being in its first position, the blade is moving in the inlet compartment 7 to allow the admission of oxidizing gas on the one hand and the entry and compression of oxidizing gas in the room on the other hand.
- the fluidic communication device moves to the second position, which closes the inlet and opens the outlet of the combustor.
- the injection of fuel and its combustion in the chamber are controlled, which causes the displacement of the blade in the exhaust compartment 8 and the expansion of the burnt gases from a hand and the exhaust of the burnt gases out of the frame 2 on the other hand.
- the fluidic communication device passes into the first position, and the cycle begins again.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280038582.5A CN117413118A (zh) | 2021-06-07 | 2022-06-07 | 旋转式燃烧发动机及相关联的燃烧方法 |
EP22734365.4A EP4352348A1 (fr) | 2021-06-07 | 2022-06-07 | Moteur à explosion rotatif et procédé de combustion associé |
KR1020237042266A KR20240017823A (ko) | 2021-06-07 | 2022-06-07 | 로터리 연소 엔진 및 관련 연소 방법 |
CA3217418A CA3217418A1 (fr) | 2021-06-07 | 2022-06-07 | Moteur a explosion rotatif et procede de combustion associe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2105973A FR3123686B1 (fr) | 2021-06-07 | 2021-06-07 | Moteur à explosion rotatif et procédé de combustion associé |
FRFR2105973 | 2021-06-07 |
Publications (1)
Publication Number | Publication Date |
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WO2022259147A1 true WO2022259147A1 (fr) | 2022-12-15 |
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ID=77999042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/IB2022/055298 WO2022259147A1 (fr) | 2021-06-07 | 2022-06-07 | Moteur à explosion rotatif et procédé de combustion associé |
Country Status (6)
Country | Link |
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EP (1) | EP4352348A1 (fr) |
KR (1) | KR20240017823A (fr) |
CN (1) | CN117413118A (fr) |
CA (1) | CA3217418A1 (fr) |
FR (1) | FR3123686B1 (fr) |
WO (1) | WO2022259147A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB518133A (en) * | 1937-09-01 | 1940-02-19 | Karl Walter Weiland | Improvements in or relating to combustion product engines |
DE2855968A1 (de) * | 1978-12-23 | 1980-07-10 | Eduard Dipl Ing Abadschieff | Viertakt-verbrennungsmotoren mit gegentakt-brennkammern |
US20140245988A1 (en) * | 2013-03-04 | 2014-09-04 | Pratt & Whitney Canada Corp. | Rotary internal combustion engine with pilot subchamber |
US10578012B2 (en) * | 2011-07-28 | 2020-03-03 | Pratt & Whitney Canada Corp. | Rotary internal combustion engine with pilot subchamber |
US10801394B2 (en) * | 2017-11-29 | 2020-10-13 | Pratt & Whitney Canada Corp. | Rotary engine with pilot subchambers |
-
2021
- 2021-06-07 FR FR2105973A patent/FR3123686B1/fr active Active
-
2022
- 2022-06-07 CA CA3217418A patent/CA3217418A1/fr active Pending
- 2022-06-07 KR KR1020237042266A patent/KR20240017823A/ko unknown
- 2022-06-07 WO PCT/IB2022/055298 patent/WO2022259147A1/fr active Application Filing
- 2022-06-07 EP EP22734365.4A patent/EP4352348A1/fr active Pending
- 2022-06-07 CN CN202280038582.5A patent/CN117413118A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB518133A (en) * | 1937-09-01 | 1940-02-19 | Karl Walter Weiland | Improvements in or relating to combustion product engines |
DE2855968A1 (de) * | 1978-12-23 | 1980-07-10 | Eduard Dipl Ing Abadschieff | Viertakt-verbrennungsmotoren mit gegentakt-brennkammern |
US10578012B2 (en) * | 2011-07-28 | 2020-03-03 | Pratt & Whitney Canada Corp. | Rotary internal combustion engine with pilot subchamber |
US20140245988A1 (en) * | 2013-03-04 | 2014-09-04 | Pratt & Whitney Canada Corp. | Rotary internal combustion engine with pilot subchamber |
US10801394B2 (en) * | 2017-11-29 | 2020-10-13 | Pratt & Whitney Canada Corp. | Rotary engine with pilot subchambers |
Also Published As
Publication number | Publication date |
---|---|
KR20240017823A (ko) | 2024-02-08 |
CN117413118A (zh) | 2024-01-16 |
FR3123686A1 (fr) | 2022-12-09 |
CA3217418A1 (fr) | 2022-12-15 |
FR3123686B1 (fr) | 2024-03-22 |
EP4352348A1 (fr) | 2024-04-17 |
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