US3624740A - Rotary piston internal combustion engine - Google Patents

Rotary piston internal combustion engine Download PDF

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US3624740A
US3624740A US33619A US3624740DA US3624740A US 3624740 A US3624740 A US 3624740A US 33619 A US33619 A US 33619A US 3624740D A US3624740D A US 3624740DA US 3624740 A US3624740 A US 3624740A
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piston
slides
wall
housing
internal combustion
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US33619A
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English (en)
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Fredrik Jeremias Hogguer
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Priority claimed from NL6919089A external-priority patent/NL6919089A/xx
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    • 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
    • F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
    • F01C11/002—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle
    • F01C11/004—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle and of complementary function, e.g. internal combustion engine with supercharger
    • 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
    • F01C1/356—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 outer member
    • F01C1/3562—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 outer member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/011—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with vanes sliding in the housing
    • 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
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/012—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with vanes sliding in the piston
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • PATENTEBRUV 30 I9 SHEET 01 0F 10
  • SHEET 070F 10 PATENTEDuuvaomn 3,624,740 SHEET U80F 10 ROTARY PISTON INTERNAL COMBUSTION ENGINE This invention relates to an internal combustion engine comprising an engine housing having a virtually right-circular cylindrical inner wall, a rotary, out-of-round, cylindrical, hollow piston within said housing, pairs of diametrically opposed slides guided in fixed parts of said housing for radial move ment and continuously in contact with the periphery of said piston to define sections of varying radial dimensions between said housing and said piston for different phases of the combustion process, the slides of each pair being interconnected by a diametrical coupling rod.
  • An engine of this kind hereinafter referred to as of the kind described, is known, and has various disadvantages, the most important one of which is that the shape of the periphery of the piston makes it necessary for the coupling rods of the pairs of slides to be provided with a resilient member to ensure that the slides are always in contact with the piston.
  • an internal combustion engine of the kind described in which the crosssectional configuration of the peripheral wall of the piston is composed of two opposed quadrants of a circle having a common center in the axis of rotation of the piston and respectively having a larger radius R and a smaller radius r, said quadrants being connected by arcuate portions in the other quadrants, whose geometrical configuration is the locus of points to be found by drawing in one of the last-mentioned quadrants an auxiliary arc of a circle having a radius r and having its center in the radius bounding the larger of said firstmentioned quadrants and the quadrant in which the auxiliary arc is drawn, and at a distance R-r from the axis of rotation of the piston, drawing a diametral line R+r from each point of said auxiliary circle through the center of said first-mentioned quadrants, producing said diametral line to a second auxiliary circle in the opposite quadrant, said second auxiliary circle having a radius r
  • the coupling rods may be rigid, provided their coefficient of expansion be equal to that of the material of the piston.
  • the inner periphery of the housing is defined by an inscribed right-circular cylinder having a radius of curvature equal to that of the piston sector having the larger radius of curvature, increased by the compression space.
  • the peripheral wall of the piston is of virtually uniform thickness throughout, and also has radial pairs of slides continuously in contact with its inner periphery, said slides being guided in slots of a centric, solid core in the form of a solid of revolution and fixedly connected with the housing of the engine, the inner periphery of the piston located closest to the center passing along the basis of said core, a thick, crescent-shaped disk, bounding one flat piston wall and extending halfway the other flat piston being secured to the peripheral wall of the piston, and having a centric right-circular cylindrical circumference, and except for the portion of the outer periphery of the piston which passes along the cylindrical wall of the housing, extends outside the other portions at the outer periphery of the piston, and is provided with an outlet, the flat piston surface at the upper side of the core having an inlet, the peripheral wall of the piston having a passage opening adjacent to, but trailing relative to, said outlet.
  • FIG. 1 shows a diagram according to which both the outer circumference and the inner circumference of the piston according to the invention are designed, the latter circumference being of interest for a two-stroke engine;
  • FIG. 2-9 are diagrammatic showings of the internal combustion engine according to the invention, showing various phases of a four-stroke process
  • FIG. 10-16 are diagrammatic showings of an internal combustion engine according to the invention, showing various phases of a two-stroke process
  • FIG. I7 is an axial sectional view of an embodiment of a four-stroke engine according to the invention, with two pistons in the same position, namely, on the line XVII-XVII of FIG. 18;
  • FIG. 13 is a cross-sectional view of the engine of the line XVIIIXVIII of FIG. 17;
  • FIG. 19 shows, on a slightly enlarged scale, an axial section of an embodiment of a two-stroke engine according to the invention on the line XlX-X of FIG. 20, the upper half of the section being turned through relative to the lower half;
  • FIG. 20 and 21 are two cross-sectional views of the engine on the lines XXXX and XXIXXI, respectively, of FIG. 19.
  • both the four-stroke and the two-stroke engine require such a peripheral configuration of the piston that slides coupled pairwise by means of a rigid coupling rod are continuously in contact with the periphery of the piston, which coupling rod intersects the axis of rotation according to diametral lines.
  • all diametral lines must be equally long. 7
  • the peripheral configuration of the hollow piston is composed of two opposing quadrants of circles, namely arcs 2 and 3, respectively having a larger radius R and a smaller radius r.
  • the two arcs 2 and 3 are interconnected by transitional arcs 4, 4'.
  • the configuration of the transitional arcs is determined by drawing two additional quadrants of a circles, namely rightand left-hand auxiliary arcs 5 and 5' having centers 0, 0' and a radius r and beginning at the ends of the arc with radius R.
  • Virtually straight lines 6 connect the auxiliary arcs 5, 5' having a radius r with the arc 3.
  • a line having a length R+r is set ofi' from the left-hand auxiliary arc 5' in FIG. 1 to determine point 8.
  • the middle 9 of the line between 8 and the righthand auxiliary arc is a point of the right-hand transitional are 4.
  • other points of the transitional arcs are determined by drawing other diametral lines and setting off R+r either from the left-hand or from the right-hand auxiliary arc.
  • the radii R and r in FIG. 1 concern the inner periphery of the wall of the piston.
  • the outer circumference of the piston wall can be designed in the same manner. It is simpler, however, when thickness d is set off radially outwardly from the inner arcs on the diametral lines. It follows that the thickness of the peripheral wall of the piston varies slightly and is greatest where the diametral lines intersect the circumference at right angles, in other words where they are perpendicular to the tangent at that point.
  • numeral 10 designates the inner circumference of the wall of the housing, sometimes referred to as the cylinder, and l the rotary piston.
  • the inner circumference 10 is determined by an inscribed circle which in FIG. 2-9, owing to the diagrammatic representation largely coincides with the inner circumference.
  • the piston 1 has two circumferential sections 2, 3 in the form of an arc of a circle concentric with the inscribed circle and respectively having a larger radius R and a smaller radius r.
  • the arcs with radius R and r, respectively, define opposing sectors l1, 12, each having an angle at the center or axis of rotation 13 of 90.
  • the two other sectors 14, naturally also have an angle at the center of 90, and are defined by transitional arcs 4, 4'.
  • FIGS. 2-9 which define the sectors are the radial axes of movement of slides, two of which are shown diagrammatically at 16, 17. There are further four pairs of poppet valves in the housing, one pair 18, 19 of which is shown, 18 being an inlet valve and 19 an outlet valve. Finally, there is shown a diagrammatic spark plug disposed between valves 18 and 19.
  • the Z-shaped arrow 22 in FIG. 2 indicates ignition, it being supposed that there is a compressed explosive mixture in the quadrant between the piston and the inner wall of the housing.
  • the space 23 is again increased owing to the movement of transitional are 4 and when the inlet valve 18 is fully open, the inlet phase is accomplished, in other words, air or a combustible mixture-depending on whether the engine works according to the diesel principle or the Otto principle, is drawn into the space 23 (FIG. 7).
  • FIG. 8 The end of the inlet phase is shown in FIG. 8, in which Figure the inlet valve is shown as being closed.
  • FIGS. 29 arrows are shown at the valve rods, which indicate the direction of movement of the valves.
  • FIG. 10 shows the beginning of the power stroke resulting from combustion or explosion which has just occurred owing to sparking from the spark plug 20.
  • the combustion chamber 23 is bounded by the cylinder wall 10 of the engine housing, the circumferential surface of the piston 1 and two outward radial slides 16 and 17.
  • the slides 16 and 17 each form part of a diametrally coupled pair of slides, the slides on the opposite sides being designated by 16 and 17.
  • the direction of rotation of the piston is indicated by arrow 21.
  • FIG. 11 shows the power stroke in full operation. Owing to the widening space 24, expansion of the combusted gases takes place. The power stroke ends when the outlet port has passed slide 16. This is shown in FIG. I2.
  • the outlet port is arranged in a thick disk to be described hereinafter. The disk is connected with the circumferential wall of the piston I and is also active as a balancing weight. Consequently the outlet port 25 rotates along with the oubof-round piston wall.
  • a passage opening 26 is located just before the slide 16as seen in the direction of rotation according to arrow 21-in the piston wall.
  • the inner space 27 of the piston communicates with the outside chambers.
  • a fixed, centrally arranged solid core 28 Disposed in the inner chamber of the piston is a fixed, centrally arranged solid core 28, preferably in the form of a solid of revolution, which will be described later. This core defines with the piston wall a space 29, which is widened as the piston rotates, as shown in FIG. 13.
  • the chamber 29 is further bounded by two radial slides 30 and 3I-disposed within the piston-which together with slides 30' and 31' respectively form an integral diametral pair of slides whose direction of to and fro movement coincides with that of the outward pairs of slides 16, I7 and 17, 17, respectively.
  • the widening chamber 29 comes in communication with the inlet port 32 of the piston, which is in continuous communication with the air and fuel mixture inlet of the engine, to be described hereinafter. Accordingly, there is intake of fresh mixture within the piston.
  • FIGS. 17 and I8 and 29 like parts are designated by the same reference numerals.
  • the engine is provided with two equally positioned pistons I, I, rotating within a common cylindrical wall 10 of the engine housing.
  • the rotary shaft consists of three sections, namely, shaft 13 which connects the two pistons, and the ends of which are provided with key grooves 35 which engage with countergrooves of hub members 36, the latter being connected with the facing piston walls 38 by means of bolts, of which the axes 37 are shown only.
  • the piston walls 39 facing away from each other are provided with hollow taps 40 in an alignment with shaft 13, which taps constitute the two other sections of the shaft and are journaled in roller bearings 41 for rotation relative to outward cylindrical stubs 42 of the flat sidewalls 43 of the engine housing.
  • the connecting shaft 13 is journaled in roller bearings 46 via bearing blocks 45 relative to the fixed partition wall 44.
  • the radially reciprocating slides cooperating with the peripheral walls of the pistons one pair of which is shown connected by a connecting rod 47 with a slot 48 for the passage of shaft 13, are provided with means, such as flat springs (not shown) to urge them into sealing sliding contact with the peripheral wall of the respective piston in cooperation with a lubricant film and allowing for some clearance owing to thermal influences.
  • the slides 16, 16' (and also the slides 17, 17', not visible in FIG. 17) are constituted by two wings 49, 50, formed integrally with each other. Since connecting rod 47, 47' of each pair of slides engages slightly eccentrically, so that there is a risk of warping, the free ends of the wings are received in radial grooves 51 in the sidewalls 43 of the engine housing.
  • FIG. 18 The poppet valves, of which in FIG. 18 the rods of the uppermost associated pair are designated by 18 and 19, are not shown in FIG. 17.
  • the latter figure only shows the upper parts of the valve springs 52, spring cups 53, rockers 54, and tappets 55.
  • the valves on the right-hand side and on the left-hand side have their axes respectively located in one plane perpendicular to the axis of rotation.
  • the tappets of the inlet valves are axially offset relative to the tappets of the outlet valves through a distance 56, as a result of which all outlet valves and all inlet valves can each be operated by a single cam 57, 58. In this way, all rockers are of equal length, resulting in an equal lifting height.
  • reference numerals 52 and higher are only shown in the right-hand half).
  • Cams 57 and 58 are arranged on a sleeve 59 freely rotatable on hollow taps 40.
  • Sleeve 59 carries a gear wheel 60 at its end, which 2:1 with a sprocket 61 which with a sprocket 62 is keyed to an intennediate shaft 63.
  • Shaft 63 is joumaled for free rotation in a case 64 extending radially from stub 42.
  • the last-mentioned sprocket 62 engages with a sprocket 65 keyed to tap 40. This established the 2:1 ratio of the rotation of the cams and the piston.
  • the pistons are each provided with a balancing weight 66, cast in one piece with the piston.
  • the balancing weight may be a separate member.
  • the inner wall of the cylinder is formed as a regular polygon 67, but axially beside the valve cup zone as a right-circular cylinder 68.
  • the slide compartments 70 are closed with covers 69, while the outwardly flaring tubes 71 in the hollow taps are designed for passing cooling fluid to the interior of the piston, which fluid can flow back through the annular space 72 between the tubes and the tap wall.
  • the piston 1 is divided into two axial parts 73 and 74, secured together.
  • a ring 77 of radially varying thickness and right-circular cylindrical circumference is secured to sidewall 75the left-hand one in FIG. 19*of the part 73 by means of bolts 76, which ring surrounds the peripheral wall of the piston proper and acts as a balancing weight.
  • the balancing weight has its largest thickness at 78.
  • This core extends axially throughout the two parts 73, 74 of the piston and is secured to wall 84 of the engine housing bounding part 74 by means of a central tap bolt 83.
  • An eccentrically disposed pin 85 restrains the core from rotating along with the piston.
  • the twostroke engine has a single piston, composed of two different parts 73, 74, and the slides 16, 16', 17 and 17' are guided by round pins 86 formed integrally with covers 69.
  • the piston part 74 (see FIGS. 19 and 21), has no slide in its interior and its peripheral wall may have a thickness different from that of part 73, which is designed in accordance with FIG. 1.
  • Part 74 is provided with some oil baffles 87, by means of which the wall is connected with central bushing 88.
  • This bushing is journaled on an inwardly extending stub 92 of the wall 84 of the engine housing by means of a double-needle bearing with needles 89, and intermediate ring 91.
  • the outside opening of stub 92 which has an intermediate wall 93 as a supporting surface for tap bolt 83, is closed with a cover 94, which is clamped against wall 94 by tap bolts 95.
  • the sidewall 97 of piston part 74 is sealed by means of a flat, broad stationary ring 96.
  • the sidewall 98 of piston part 73 is connected with a shaft 100 by tap bolts 99, from which shaft the power of the engine can be taken off.
  • Shaft 100 is journaled by means of needle bearing 101 in an inlet stub 102 with a lip 103, which forms part of the wall 104 of the engine housing.
  • the shaft is provided with a central, stepped, blind bore 106, in which is arranged a ball bearing 107, which supports the stationary core 128 via a connecting member 108 secured to the bore by tap bolts 109.
  • FIGS. 19, 20 and 21 clearly show inlet port 32, passage 32 and outlet port 25.
  • the interior of the piston is cooled by a suitable fluid which enters through a supply tube not shown and can flow away through a discharge tube 110.
  • ring 96, stub 92 and sidewall 97 of the piston are provided with passages 1 1 1.
  • connection pins designate connecting pins
  • the latter may be gaskets, resilient plates or elastic insertions, grease gaskets, and like means.
  • the engine housing consists of two halves, each having a sidewall 104, 82 and a circumferential portion 123, 124, formed integrally therewith, and through which extend long connecting bolts not shown.
  • combustion takes place four times in succession during each revolution with one piston and, owing to the second piston, again four combustions during the next revolution.
  • Each piston must perform one revolution for intake and compression.
  • the volume of the inner space between the piston wall and the core is larger than the volume of the outer space between the inner wall of the housing and the piston wall.
  • An internal combustion engine comprising an engine housing having a virtually right-circular cylindrical inner wall, a rotary, out-of-round cylindrical, hollow piston within said housing, diametrically opposed pairs of slides guided in fixed parts of said housing for radial movement and continuously in contact with the periphery of said piston to define sections of varying radial dimensions between said housing and said piston for different phases of the combustion process, the slides of each pair being interconnected by a diametral coupling rod, in which the cross-sectional configuration of the peripheral wall of the piston is composed of two opposed quadrants of a circle having a common center in the axis of rotation of the piston and respectively having a larger radius R and a smaller radius r, said quadrants being connected by arcuate portions in the other quadrants, whose geometrical configuration is the locus of points to be found by drawing in one of the last-mentioned quadrants an auxiliary arc of a circle having a radius r and having its center in the radius bounding the larger of said first-mentioned
  • An internal combustion engine characterized in that a pair of radially movable valves is arranged between each pair of successive slides, said valves being preferably formed as poppet valves, and controlling an inlet channel and an outlet channel, the flat sides of the valve cups facing the piston forming with the adjacent parts of the inner circumference of the wall of said housing a polygon with which the inscribed right-circular cylinder is locally in contact.
  • An internal combustion engine comprising two equally positioned pistons, and wherein each slide is duplicated to be simultaneously in contact with both peripheral walls of the piston, the connecting rods of each pair of slides engaging with the slides adjacent the middle, and extending between the two pistons said rods having a slot through which extends the rotary shaft connecting the two pistons.
  • An internal combustion engine according to claim 1, and operating according to the two-stroke principle, in which the peripheral walls of the piston is of virtually uniform thickness throughout, and also has radial pairs of slides continuously in contact with its inner periphery, said slides being guided in slots of a centric, solid core in the form of a solid of revolution and fixedly connected with the housing of the engine.
  • the inner periphery of the piston located closest to the center rubbing along the basis of said core, a thick crescent-shaped disk, bounding one fiat piston wall and extending halfway the other flat piston wall, being secured to the peripheral wall and having a centric right-circular cylindrical circumference, and except for the portion of the outer periphery of the piston which rubs along the cylindrical wall of the housing, extends outside the other portions at the outer periphery of the piston, and is provided with an outlet, the flat piston surface at the upper side of the core having an inlet, the peripheral wall of the piston having a passage opening adjacent to, but trailing relative to, said outlet.
  • An internal combustion engine wherein two radially inward pairs of slides and two radially outward pairs of slides are provided, which together with the inner circumference of the piston and the core define an intake chamber, a transition chamber and a precompressing chamber, and with the outer circumference of the piston and the cylinder wall define an intake chamber, and end compression chamber, and an expansion chamber, respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
US33619A 1969-05-02 1970-05-01 Rotary piston internal combustion engine Expired - Lifetime US3624740A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6906731A NL6906731A (de) 1969-05-02 1969-05-02
NL6919089A NL6919089A (de) 1969-12-19 1969-12-19

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US3624740A true US3624740A (en) 1971-11-30

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DE (1) DE2020882A1 (de)
FR (1) FR2044756A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809024A (en) * 1972-08-14 1974-05-07 H Abbey Four-stroke and two-stroke rotary internal combustion engine
US6322334B1 (en) * 1996-08-16 2001-11-27 Thomas Klipstein Rotary piston system
US20070261664A1 (en) * 2004-11-03 2007-11-15 Frank Altenschmidt Internal combustion engine with direct fuel injection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627544A1 (fr) * 1988-02-24 1989-08-25 Luciani Dominique Moteur rotatif deux temps a combustion interne

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US154231A (en) * 1874-08-18 Improvement in rotary engines
US1033514A (en) * 1911-11-15 1912-07-23 Isaac Alford Rotary engine.
US1157806A (en) * 1914-08-06 1915-10-26 Carl Johan Rixen Rotary pump with rotating abutment protruding into a circular groove.
US1944956A (en) * 1929-07-25 1934-01-30 Leo B Thomas Rotary engine and pump
US2215873A (en) * 1938-06-14 1940-09-24 Gahm Samuel Bernard Motor driven pump
US3361119A (en) * 1964-09-28 1968-01-02 Brian Patrick Foxley Conolly Internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US154231A (en) * 1874-08-18 Improvement in rotary engines
US1033514A (en) * 1911-11-15 1912-07-23 Isaac Alford Rotary engine.
US1157806A (en) * 1914-08-06 1915-10-26 Carl Johan Rixen Rotary pump with rotating abutment protruding into a circular groove.
US1944956A (en) * 1929-07-25 1934-01-30 Leo B Thomas Rotary engine and pump
US2215873A (en) * 1938-06-14 1940-09-24 Gahm Samuel Bernard Motor driven pump
US3361119A (en) * 1964-09-28 1968-01-02 Brian Patrick Foxley Conolly Internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809024A (en) * 1972-08-14 1974-05-07 H Abbey Four-stroke and two-stroke rotary internal combustion engine
US6322334B1 (en) * 1996-08-16 2001-11-27 Thomas Klipstein Rotary piston system
US20070261664A1 (en) * 2004-11-03 2007-11-15 Frank Altenschmidt Internal combustion engine with direct fuel injection

Also Published As

Publication number Publication date
DE2020882A1 (de) 1970-11-19
FR2044756A1 (de) 1971-02-26

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