EP1597456A2 - Machine a piston rotatif comprenant un piston rotatif oval guide dans une chambre ovale - Google Patents

Machine a piston rotatif comprenant un piston rotatif oval guide dans une chambre ovale

Info

Publication number
EP1597456A2
EP1597456A2 EP04714747A EP04714747A EP1597456A2 EP 1597456 A2 EP1597456 A2 EP 1597456A2 EP 04714747 A EP04714747 A EP 04714747A EP 04714747 A EP04714747 A EP 04714747A EP 1597456 A2 EP1597456 A2 EP 1597456A2
Authority
EP
European Patent Office
Prior art keywords
rotary piston
chamber
oval
section
curvature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04714747A
Other languages
German (de)
English (en)
Other versions
EP1597456B1 (fr
Inventor
Boris Schapiro
Lev Levitibn
Naum Kruk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Excursion Ltd
Original Assignee
"RKM-Rotationskolbenmaschinen" GbR vertr durch Herrn Dr Boris Schapiro
RKM ROTATIONSKOLBENMASCHINEN G
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by "RKM-Rotationskolbenmaschinen" GbR vertr durch Herrn Dr Boris Schapiro, RKM ROTATIONSKOLBENMASCHINEN G filed Critical "RKM-Rotationskolbenmaschinen" GbR vertr durch Herrn Dr Boris Schapiro
Publication of EP1597456A2 publication Critical patent/EP1597456A2/fr
Application granted granted Critical
Publication of EP1597456B1 publication Critical patent/EP1597456B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F01C21/008—Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines
    • 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
    • F01C1/22—Rotary-piston machines or engines of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth- equivalents than the outer member
    • 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
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • 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
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/02—Radially-movable sealings for working fluids
    • 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
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/02—Radially-movable sealings for working fluids
    • F01C19/025—Radial sealing elements specially adapted for intermeshing engagement type machines or engines, e.g. gear machines or engines
    • 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
    • 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
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings

Definitions

  • the invention relates to a rotary piston machine with a prismatic chamber formed in a housing, the cross section of which forms an oval, and a rotary piston which is movable in the chamber and whose cross section also forms an oval, the order of which deviates from the order of the oval forming the cross section of the chamber.
  • the rotary piston rotates alternately in successive movement sections about different axes of rotation from one stop position to the next and, when it rotates in any position, rests against the inner wall of the chamber to form two working spaces, and with an internal toothing opening in the rotary piston, the ' Internal toothing with a toothing arrangement for the input or output of the rotary movement is engaged.
  • FIG. 1 Figure composed of arcs.
  • the arcs are set up continuously and differentially.
  • the curve is continuous at the points where the arcs connect.
  • the tangents of the two adjacent arcs also coincide there.
  • the curve can be differentiated.
  • the second derivative - which determines the curvature - makes a jump.
  • the oval consists of alternating circular sections with a first, smaller, and a second, larger radius of curvature.
  • the order of the oval is determined by the number of pairs of circular sections with the first and the second radius of curvature.
  • a second-order oval or bi-oval is "ellipse-like" with two diametrically opposite circular arcs of smaller diameter, which are connected by two circular arcs of larger diameter.
  • US 3 967 594 A and US 3 006 901 A show a rotary piston machine with an oval piston in an oval chamber.
  • the cross section of the piston is bioval.
  • This bi-oval piston is movable in a tri-oval chamber.
  • complex gears are provided in order to transmit the rotary movement of the rotary piston to a shaft.
  • DE 199 20 289 CI also describes a rotary piston machine in which the cross section of a prismatic chamber formed in a housing is tri-oval with continuously and differentially adjoining first and second arcs of alternating a smaller radius of curvature and a larger radius of curvature.
  • a rotary piston with a bi-oval cross-section is guided in the chamber.
  • the bi-oval cross section of the rotary piston is alternately first and second
  • Circular arcs with the smaller or larger radii of curvature of the tri-oval cross-section of the chamber are formed, which again connect continuously and differentially to one another.
  • the bi-oval rotary piston carries out the movement cycles described above with jumping instantaneous axes of rotation. The movement of the rotary piston is tapped there in a very simple way:
  • the shaft extends centrally through the tri-oval chamber, i.e. along the intersection of the symmetry planes of the chamber.
  • the shaft carries a pinion.
  • the rotary piston has an oval opening with internal teeth. The long axis in the cross section of the opening extends along the short axis of the bi-oval cross section of the rotary piston.
  • the pinion constantly meshes with the internal toothing.
  • a housing forms a prismatic chamber, the cross section of which is such an oval of odd order, for example a Third-order oval.
  • the chamber forms cylindrical inner wall sections alternating with the first, smaller and the second, larger radius of curvature.
  • a rotary piston is movable, which in cross section forms an oval whose order is one less than the order of the oval of the chamber.
  • the oval used for the rotary piston has a double symmetry, even if it has a higher order, ie it is mirror-symmetrical with respect to two mutually perpendicular axes.
  • This rotary piston has two diametrically opposed cylindrical jacket sections whose radius of curvature corresponds to the smaller (first) radius of curvature of the oval of the chamber. If the rotary piston forms an oval in cross section, the second, larger radius of curvature of this oval is equal to the second radius of curvature of the oval forming the chamber.
  • the rotary piston lies with a first of these cylindrical jacket sections in a complementary cylindrical inner wall section of the chamber, which has the same smaller radius of curvature.
  • the second, diametrically opposite cylindrical casing section the rotary piston slides on the opposite cylindrical inner wall section of the chamber, which has the larger radius of curvature. In this way, two working spaces are formed by the rotary piston in the chamber, one of which increases in size and the other becomes smaller as the rotary piston rotates.
  • the rotary piston rotates about a current axis of rotation.
  • This instantaneous axis of rotation coincides with the cylinder axis of the first cylindrical jacket section.
  • This current axis of rotation therefore has a defined position relative to the rotary piston.
  • the instantaneous axis of rotation of course also corresponds to the cylinder axis of the cylindrical inner wall section which is fixed to the housing and has a smaller radius of curvature in which the rotary piston rotates.
  • This rotation continues until the second cylindrical jacket section of the rotary piston reaches a stop position. In this stop position, the second cylindrical jacket section lies in the lower wall section of smaller diameter adjoining the opposite inner wall section with a larger radius of curvature.
  • a further rotation of the rotary piston around the current pivot point is not possible.
  • the current axis of rotation therefore jumps for the next one Movement section in a different position, namely the cylinder axis of the second cylindrical jacket section.
  • This new momentary axis of rotation is also in a defined position relative to the rotary piston.
  • the next movement section it corresponds to the cylinder axis of the cylindrical inner wall section, in which the second cylindrical jacket section of the rotary piston now rotates.
  • the “first” cylindrical jacket section slides again on the opposite inner wall section with a larger radius of curvature.
  • the rotary piston In such a rotary piston machine, the rotary piston always rotates in the same direction of rotation but alternately around different instantaneous axes of rotation, the
  • Inner wall sections with a smaller radius of curvature.
  • the volume of one work area increases to a maximum value, while the volume of the other work area decreases to a minimum value.
  • the rotary piston is also in the
  • Such a rotary piston engine can be used as a two-stroke or four-stroke internal combustion engine (with internal combustion) or as an external combustion engine, e.g. Steam engine. But it can also be used as an air pressure motor
  • Hydraulic motor or work as a pump Hydraulic motor or work as a pump.
  • a rotary piston the cross section of which is an oval of the second order, can be moved in a chamber whose cross section forms an oval of the third order.
  • a single output shaft extending centrally through the chamber serves to tap the movement of the rotary piston.
  • the output shaft protrudes through an oval opening in the rotary piston and carries a pinion.
  • the pinion meshes with a toothing on the inside of the opening.
  • the order of the oval defining the chamber is in each case one greater than the order of the oval which forms the cross section of the rotary piston.
  • a bi-oval rotary piston is guided in a tri-oval chamber. The current axes of rotation of the
  • Rotary piston in the stop positions relative to the rotary piston only between two positions, relative to the housing but between at least three positions.
  • the rotary piston with the small radius section translates along the large radius section along the inner wall of the chamber. This can lead to sealing problems in the sealing between the work rooms
  • Chamber drove Another problem arises from the fact that, in each working cycle of the rotary piston machine, successively more than two working spaces are formed, which move around along the inner wall of the housing.
  • the invention has for its object to improve the seal between the working spaces of the chamber in a rotary piston machine of the type mentioned.
  • the invention is further based on the object in the stop positions of the rotating body in a simple manner, a closed kinematics with clear
  • the invention is specifically based on the object of reducing the number of instantaneous axes of rotation occurring in relation to the housing.
  • the invention is based on the object of designing a rotary piston machine of the type mentioned at the outset in such a way that only two alternatingly enlarging and reducing work spaces occur which are arranged opposite one another in fixed angular positions with respect to the housing.
  • the order of the oval of the chamber is one less than the order of the oval of the rotary piston
  • the breakthrough is essentially mathematically similar to the rotary piston
  • the Levels of symmetry of the opening coincide with those of the rotary piston
  • the toothing arrangement has a pair of shafts provided with external toothing and fixed to the housing, the outer toothing of which engages with the inner toothing of the opening, with one shaft in each area of a section of the opening with a smaller one Radius of curvature and the other shaft is arranged in the region of a section with a larger radius of curvature and the shafts interchange their roles in successive movement sections.
  • Rotary piston in an oval chamber with the formation of working spaces which are sealed off from one another, even if, in contrast to the prior art, the rotary piston has a higher order of oval than the chamber, e.g. a tri-oval rotary piston rotates in a bi-oval chamber. The rotation takes place around one of two momentary axes of rotation, which are fixed to the housing
  • Waves are formed.
  • the axes of rotation have gears or external gears. which are in engagement with an internal toothing of an essentially oval opening in the rotary piston.
  • One of the shafts sits in an area of the smaller radius of curvature of the oval opening, e.g. almost in a "corner” of the "arch triangle” forming the breakthrough.
  • the other shaft is in engagement with the opposite area of the internal toothing with the larger radius of curvature, that is to say the opposite side of the triangular arch.
  • Rotary piston leads in the chamber.
  • speed-regulating means are provided in a further embodiment of the invention, by means of which, when a stop position is reached for that shaft, the external toothing in the previous movement section with the internal toothing in the region of the larger one
  • Speed can be specified in that one of two shafts fixed to the housing is braked by braking means, which is structurally simple to accomplish.
  • a peripheral portion of the rotary piston rotates relatively slowly on a peripheral portion with a large K-radius of curvature of the inner wall of the chamber.
  • the two shafts rotate alternately at lower and higher speeds.
  • a differential or a freewheel By means of a differential or a freewheel, a constant speed of rotation of an input or output shaft coupled to the two shafts can be provided.
  • Fig.l shows a cross section of a rotary piston machine with two shafts, a rotary piston, the cross section of which forms an oval of the third order, is guided in a chamber, the cross section of which is an oval of the second order.
  • Fig.2 is a representation similar to Fig.2 and shows the rotary piston in one
  • Figure 3 is a representation similar to Figure 2 and shows the rotary piston during the next movement section.
  • FIG. 4 shows a cross section of a rotary piston machine with two shafts, a rotary piston, the cross section of which forms a fifth-order oval, being guided in a chamber, the cross-section of which is an fourth-order oval.
  • FIG. 4A shows a modification of the arrangement according to FIG.
  • FIG. 5 shows a cross section of a rotary piston machine with two shafts, a rotary piston, the cross section of which forms a seventh-order oval, is guided in a chamber, the cross section of which is an oval sixth
  • Fig. 6 is a schematic representation of the speed regulating means.
  • 7A is a schematic, enlarged representation of the seal in a
  • Rotary piston machine of the type shown in Figures 1 to 5, wherein the seal between a sealing strip and a Circumferential portion of the rotary piston with a smaller radius of curvature takes place.
  • FIGS. 7B is a schematic, enlarged representation of the seal in a rotary piston machine of the type shown in FIGS. 1 to 5, the seal between a sealing strip and a
  • Circumferential portion of the rotary piston is carried out with a larger radius of curvature.
  • FIG. 8 shows a detail of the rotary piston machine from FIG. 4A on an enlarged scale.
  • Figure 8 A shows the detail of Figure 8 on a further enlarged scale.
  • Fig.l 10 denotes a housing.
  • a chamber 12 is formed in the housing 10.
  • the cross section of chamber 12 forms a second order oval or is "bioval".
  • the cross section of the chamber 12 is accordingly formed by two circular arcs 14 and 16 of a relatively small radius of curvature and alternately between two circular arcs 18 and 20 of a relatively large radius of curvature.
  • the arcs are continuous and differentiated.
  • a rotary piston 22 is guided in the chamber 12.
  • the cross section of the rotary piston 22 forms a third-order oval or is tri-oval. Accordingly, the circumference of the cross section consists of three pairs, each of a circular arc of relatively My radius of curvature 24, 26 and 28 and a circular arc of relatively large
  • Radius of curvature 30, 32 and 34 formed.
  • the circular arcs of small and large radius of curvature alternate and are also continuous and differentiable.
  • the small radii of curvature of the rotary piston 22 are equal to your radii of curvature of the chamber 12, and likewise the large radii of curvature of the rotary piston 22 are equal to the large radii of curvature of the chamber 12
  • the cross section of chamber 12 resembles an ellipse, although it is not an ellipse at the moment.
  • the cross section of the rotary piston 22 is similar to an arc triangle with rounded corners.
  • the rotary piston 22 has a central opening 36.
  • the cross section of the opening 36 also forms a third-order oval. This third-order oval is formed by three circular arcs with a relatively small radius of curvature 38, 40 and 42 and three circular arcs 44, 46 and 48 with a relatively large radius of curvature.
  • Arcs 38, 40 and 42 with a small radius of curvature and the arcs 44, 46 and 48 with a large radius of curvature adjoin each other alternately and continuously and differentially, so that an oval is formed like an arc triangle with rounded ends.
  • the planes of symmetry 50, 52 and 54 of the opening 36 coincide with the planes of symmetry of the rotary piston 22.
  • the opening 36 has an internal toothing 56.
  • This internal toothing 56 has three concave-arched toothed strips 58, 60 and 62, essentially along the circular arcs 44, 46 and 48 of large radius of curvature. Between these concave-arched toothed racks 58, 60 and 62 are small in the area of the circular arcs
  • Radius of curvature provided convex-arc-shaped (or possibly straight) toothed strips 64, 66 and 68.
  • the rotary piston 22 divides the bi-oval chamber 12 into two working spaces 80 and 82.
  • FIG. 1 the rotary piston machine is shown schematically as
  • an inlet valve 84 and 86 and an outlet valve 88 and 90 are shown for each working space 80 and 82. Furthermore, there is a work space 80 and 82, respectively Brermkarnmer 92 or 94 with a spark plug or an injection nozzle 96 or 98.
  • the working spaces 80 and 82 with the valves and spark plugs or injection nozzles are symmetrical to the plane of symmetry extending through the circular arcs 14 and 14 of the cross section with a small radius of curvature. This is only a schematic representation.
  • pairs of mutually adjacent sealing strips 100A and 100B or 102A and 102B are provided on the housing.
  • the sealing strips 100A and 100B or 102A and 102B are symmetrical to that through the circular arcs 18 and 20 of large cross-section
  • FIG. 7A shows the sealing strips 100A and 100B at a position in the region of the transition from the smaller radius of curvature rj of the outer surface of the rotary piston 22 on the right in FIG. 7A to the region of the larger radius of curvature r 2 of this outer surface on the left in FIG. 7A.
  • the sealing strip 100A has a concave-cylindrical inner surface, the radius of curvature of which corresponds to the larger radius of curvature r 2 .
  • the sealing strip 100B has a concave-cylindrical inner surface whose radius of curvature corresponds to the smaller radius of curvature r x . It can be seen that the inner surface of the sealing strip 100A is in the region of the radius of curvature r 2 of the
  • Rotating piston 22 abuts the complementary surface of the rotating piston 22.
  • a wedge-shaped gap 100C is formed between the sealing strip 100A and the rotary piston 22 and the inner surface of the sealing strip 100A.
  • the sealing strip 100B has a concave-cylindrical
  • the rotary piston 22 rotates counterclockwise in Fig.l.
  • the rotary piston 22 rotates about the shaft 70 and slides at a low speed on the inner wall of the chamber 12 in the region of the large radius of curvature.
  • Wave 70 passes through the center of curvature of the circular arc 24 of small radius of curvature.
  • the circular arc 24 touches the circular arc 18 of the cross section of the chamber 12.
  • the opposite region of the circumferential surface of the rotary piston 22 with the large radius of curvature corresponding to the circular arc 32 lies against the region of the inner wall of the chamber 12 corresponding to the circular arc 20.
  • This area of the inner wall has the same radius of curvature as the adjacent area of the outer surface of the rotary piston. So there is a form-fitting, flat system. During the rotary movement, this area of the lateral surface of the rotary piston slides on the corresponding area of the inner wall.
  • the working space 80 increases while the working space 82 shrinks.
  • the shaft 70 is rotated relatively slowly, while the shaft 72 rotates relatively quickly.
  • the area of the circumferential surface of the rotary piston corresponding to the circular arc 28 lies in the area of the inner wall of the chamber 12 which corresponds to the circular arc 16. Both areas have the same, namely the small one Radius of curvature.
  • the regions of the circumferential surface of the rotary piston which correspond to the circular arcs 32 and 34 with the large radius of curvature lie against the regions of the inner wall of the chamber 12 which correspond to the circular arcs 18 and 20 of the cross section.
  • the radii of curvature are the same again.
  • the volume of the working chamber 82 is thus reduced to zero apart from the brake chamber 94, while the working chamber 82 has its maximum volume.
  • the shaft 72 with the toothed wheel 76 then lies in the opening 36 in the area which corresponds to the circular arc 40, that is to say in the lower left "corner" of the triangle.
  • the rotary piston 22 can no longer rotate about the axis of the shaft 70 as the current axis of rotation.
  • the further course of motion is then related to the new current axis of rotation as described above with reference to the axis of the shaft 70 as the current axis of rotation.
  • each movement section runs from one of the described stop positions to the next.
  • a work space increases, e.g. 80, from zero to a maximum, while the other workspace is reduced from the maximum to zero.
  • the work space 82 increases from zero (FIG. 2) to a maximum, while the work space 80 shrinks again
  • FIG. 3 The kinematics is not clear in the position of FIG.
  • Each of the two shafts could define a current axis of rotation with its axis. If, for example, a force is exerted to the left on the rotary piston 22 by a working medium introduced into the working space 82, this force could possibly lead to a translatory movement in the horizontal direction in FIG. 2 instead of a rotation of the rotary piston 22 about a momentary axis of rotation. This would wedge the rotary piston 22 in the chamber 12.
  • the sensors signal when the rotary piston has reached a stop position.
  • a control 142 which is acted upon by the signals from the sensors, then controls devices 144 and 146, by means of which, depending on which stop position has been reached, rotational speeds of shaft 70 and shaft 72 are briefly predetermined. It will then e.g. the shaft 70 has a low speed and the shaft 72 has a higher speed or vice versa.
  • the devices 144 and 146 can be braking devices, which act alternately briefly on the shaft 70 or the shaft 72 in the stop positions, while the other shaft remains unrestrained.
  • the radii of the partial circles of the gearwheels correspond essentially to the small radii of curvature of the second-order oval forming the opening 36. If the internal toothing 56 would continuously follow the oval of the opening 36, the gearwheels would be caught in the end positions of the rotary piston 22. The “corners” of the "triangle” could not roll over the gears. For this reason, the concave-arched toothed strips in the region of the circular arcs 38, 40, 42 with a small diameter are connected by short straight or convex-arched toothed strips 64, 66 and 68, respectively. The convex-arched toothed racks 64, 66 and 68 allow the rear toothing 56 and thus the rotary piston 22 to roll on over these areas.
  • each gear is constantly in engagement with one of the concave-arched toothed racks 64, 66 or 68.
  • the short convex-arch-shaped or straight toothed strips ensure a transition without interrupting the form fit but also without blocking.
  • FIG. 4 shows a rotary piston machine with a chamber 104, the cross section of which forms a fourth-order oval 106.
  • a rotary piston 108 is guided in the chamber 104, the cross section of which forms a fifth-order oval 110.
  • the rotary piston 108 has an opening 112 whose shape forms a fifth-order oval 114.
  • the axes of symmetry of the rotary piston 108 and the opening 112 coincide.
  • the opening 112 has an internal toothing 116.
  • the internal toothing 116 is in engagement with two gear wheels 118 and 120.
  • the gear wheels 118 and 120 are seated on two shafts 122 and 124 fixed to the housing.
  • the axes 126 and 128 of the shafts 122 and 124 lie in a plane of symmetry of the chamber 104.
  • the rotary piston 108 divides the chamber into two working spaces 130 and 132, one of which enlarges and the other decreases as the rotary piston rotates.
  • the workflow is similar to the workflow of the execution from Fig.l to 3.
  • the workflow is similar to the workflow of the execution from Fig.l to 3.
  • Rotary piston 108 rotates e.g. about the axis 126 of a shaft 122 up to a stop position. Then the current axis of rotation jumps into the axis 128 of the other shaft 124. The rotary piston rotates further about this axis counterclockwise from FIG. 4 to the next stop position.
  • the sequence of movements between two successive stop positions is a "movement section".
  • the working space 130 increases from zero to a maximum and the working space 132 decreases from a maximum to zero or vice versa.
  • the workspaces are always on both sides of axes 126 and 128 of the plane of symmetry containing waves 122 and 124. They do not wander around the chamber.
  • valves and spark plugs or injection nozzles are shown (schematically) for each work area.
  • Figure 4A shows a rotary piston machine similar to that of Figure 4. Corresponding parts have the same reference numerals as there. Details of the rotary piston machine of Figure 4A are shown on an enlarged scale in Figures 8 and 8A.
  • an injection nozzle is designated by 150.
  • the injection nozzle 150 protrudes into a combustion chamber 152.
  • This combustion chamber is dimensioned and designed in such a way that the fuel injected essentially only burns in the combustion chamber. Only the expanding combustion gases then enter the expanding work area.
  • the injection can be metered as a function of time or as a function of the rotation of the rotary piston so that it is adapted to the change in volume of the working space 130 or 132. No flame front then appears in the work area. The spreading of flame fronts in an expanding work space causes problems in known rotary piston machines.
  • the combustion chamber 152 to a kugelkalottenf 'shaped recess of the housing, to which a kegelstumpff ⁇ rmiger, to the processing space tapering space 156 is connected.
  • the space 156 is formed in an insert 158 which is threaded into an insert
  • Recess of the wall of the working space 130 or 132 is screwed in.
  • the combustion chamber 152 is closed off by a grid or network 160.
  • the injection nozzle 150 runs out into a cone rounded off at the tip, the injection taking place via nozzle openings in the jacket of this cone.
  • the described arrangement of the injection nozzle in a combustion chamber can also be used with other machines, for example with reciprocating piston machines.
  • FIG. 5 shows a rotary piston machine, in which a rotary piston, the cross section of which forms an oval of the seventh order, is guided in a chamber whose
  • Cross section is a sixth-order oval.
  • the structure and function are, apart from the order of the ovals, similar to that of the embodiment in Fig. 4.
  • Corresponding parts are provided with the same reference numerals as in FIG. 4 but with the addition "A”.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Hydraulic Motors (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne une machine à pistons rotatifs comprenant une chambre prismatique (12) contenue dans un logement (10), dont la coupe transversale est de forme ovale. Un piston rotatif (22) peut être déplacé dans la chambre (12), dont la coupe transversale est également ovale. L'ordre de l'ovale de la chambre (12) est inférieur à l'ordre de l'ovale du piston rotatif (22). Le piston rotatif (22) tournes de manière alternative dans des sections de mouvements successifs autour de nombreux axes de rotation, respectivement d'une position d'arrêt de la chambre (22) dans chaque position, formant deux chambres de travail (80, 82). Le piston rotatif (22) comprend un orifice doté d'un endentement (56) interne. Ledit endentement (56) s'enclenche avec un ensemble denté, ce qui permet de commander le mouvement rotatif. L'orifice (36) est, mathématiquement parlant, sensiblement similaire au piston rotatif (22). Les plans de symétrie (50, 52, 54) de l'orifice (36) coïncident avec ceux du piston rotatif (22). L'ensemble denté comprend une paire de tiges (70, 72) qui sont fixées au logement et qui sont pourvues d'un endentement externe (74, 76), lequel s'enclenche avec l'endentement interne (56) de l'orifice (36). Dans chaque section de mouvement, une tige (par exemple 70) est disposée respectivement dans la région de la section (28) de l'orifice qui présente un rayon de courbure similaire et l'autre tige (72) est disposée dans la région d'une section (46) présentant un rayon de courbure plus grand. Lesdites tiges sont interchangeables effectivement dans des sections de mouvement successifs.
EP04714747A 2003-02-27 2004-02-26 Machine a piston rotatif comprenant un piston rotatif oval guide dans une chambre ovale Expired - Lifetime EP1597456B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10308831A DE10308831B3 (de) 2003-02-27 2003-02-27 Rotationskolbenmaschine mit einem in einer ovalen Kammer geführten ovalen Rotationskolben
DE10308831 2003-02-27
PCT/EP2004/001921 WO2004076819A2 (fr) 2003-02-27 2004-02-26 Machine a piston rotatif comprenant un piston rotatif oval guide dans une chambre ovale

Publications (2)

Publication Number Publication Date
EP1597456A2 true EP1597456A2 (fr) 2005-11-23
EP1597456B1 EP1597456B1 (fr) 2012-12-19

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Application Number Title Priority Date Filing Date
EP04714747A Expired - Lifetime EP1597456B1 (fr) 2003-02-27 2004-02-26 Machine a piston rotatif comprenant un piston rotatif oval guide dans une chambre ovale

Country Status (8)

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US (2) US7117840B2 (fr)
EP (1) EP1597456B1 (fr)
JP (1) JP4461138B2 (fr)
KR (1) KR101109422B1 (fr)
CA (1) CA2517318C (fr)
DE (1) DE10308831B3 (fr)
RU (2) RU2344296C2 (fr)
WO (1) WO2004076819A2 (fr)

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Also Published As

Publication number Publication date
WO2004076819A3 (fr) 2005-01-06
RU2344296C2 (ru) 2009-01-20
US7117840B2 (en) 2006-10-10
CA2517318A1 (fr) 2004-09-10
RU2005129640A (ru) 2007-04-10
US7866296B2 (en) 2011-01-11
WO2004076819A2 (fr) 2004-09-10
CA2517318C (fr) 2012-05-08
US20070089701A1 (en) 2007-04-26
DE10308831B3 (de) 2004-09-09
RU2008133156A (ru) 2010-02-20
JP2006519330A (ja) 2006-08-24
KR20050116132A (ko) 2005-12-09
KR101109422B1 (ko) 2012-01-31
RU2476696C2 (ru) 2013-02-27
EP1597456B1 (fr) 2012-12-19
US20060032475A1 (en) 2006-02-16
JP4461138B2 (ja) 2010-05-12

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