WO2009008743A1 - Moteur à piston d'avance à fonctionnement circulaire - Google Patents

Moteur à piston d'avance à fonctionnement circulaire Download PDF

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Publication number
WO2009008743A1
WO2009008743A1 PCT/NZ2008/000149 NZ2008000149W WO2009008743A1 WO 2009008743 A1 WO2009008743 A1 WO 2009008743A1 NZ 2008000149 W NZ2008000149 W NZ 2008000149W WO 2009008743 A1 WO2009008743 A1 WO 2009008743A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
gear
circular run
engine
piston engine
Prior art date
Application number
PCT/NZ2008/000149
Other languages
English (en)
Inventor
Jason Lew
Original Assignee
Jason Lew
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 Jason Lew filed Critical Jason Lew
Publication of WO2009008743A1 publication Critical patent/WO2009008743A1/fr

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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
    • 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
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • 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
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements

Definitions

  • This invention relates to engines, especially suitable for thermal power machinery, gas turbines, compressed-air or liquid motors; compressed-air powered vehicles, compressed-air energy storage power stations and micro-generator power devices, etc.
  • Rotary engines such as the Wankel engine, solved some of the problems of the reciprocating piston internal combustion engine, to a varying degree of success.
  • the Wankel rotary engine is used in only a few car models.
  • Other rotary engines have had even less usage.
  • the present invention provides a circular run gear-piston engine comprising a combustion chamber connected to a toroidal cylinder via a fluid inlet, a fluid outlet for exhaust fluids to depart from the cylinder, and an annular gear-piston having gear teeth and which is adapted to run within the cylinder, and wherein fluid from the combustion chamber can enter the cylinder via the fluid entry and can propel the annular gear-piston, and the gear teeth of the annular gear-piston mesh with and can drive a driven gear.
  • Figure 1 is a cross-section view of the annular gear wheel-piston engine of the preferred embodiment
  • Figures 2A and 2B illustrate a detail of the lubricant pool of the engine shown in Figure l ;
  • Figure 3 illustrates the toroidal cylinder which forms part of the present invention
  • Figure 4A is a view of the piston arrangement of this embodiment
  • Figure 4B is a detailed view of the driven gear of this embodiment.
  • Figures 5A to 5D are sectional views of an individual piston which forms a part of the present invention.
  • Figures 6A to 6E depict three forms of complex piston ring as used in the present invention.
  • Figures 7A to 7 C show side and end views of a seal connectors of a piston as used in the present invention
  • Figures 8A and 8B illustrate the engine housing as used in the present invention
  • Figures 9A and 9B illustrate the external combustion chamber and hot expanding gas mixing device as used in the present invention
  • Figure 10 is an additional sectional view, similar to Figure 1, of the annular gear-piston of the preferred engine of the present invention.
  • Figures HA and HB illustrate an alternative form of toroidal cylinder for the engine of the present invention
  • FIGS 12A to 12C illustrate and alternative form of gear-piston used in the present invention.
  • Figure 13 is a sectional view of an alternative embodiment of the present invention.
  • the annular gear-piston engine illustrated in Figure 1 comprises an external combustion chamber system 1 (illustrated in more detail in Figure 9) and the annular gear-piston 2 (Figure 10).
  • Fuel which could be petrol, diesel, ethanol, etc., is mixed with an oxidising agent (typically air) and is injected under high pressure into the combustion chamber 1 by any suitable direct injection device (not shown).
  • An electronic ignition system ignites the gaseous mixture, so that it burns with continuous stable pressure combustion.
  • the high temperature and high pressure gas formed by the combustion is directed onto the annular gear-piston 3, causing it to rotate.
  • the gas enters the hollow pistons 21 (see Figure 4), and its momentum within each piston continues to be imparted to the leading wall 32 of the piston.
  • the annular gear-piston assembly 2 is made up of four separate components. These are the toroidal cylinder 5 (see Figure 3), the annular gear-piston unit 3, Figure 4A, the driven gear 4 ( Figure 4B) and the housing 6 (See Figure 8A).
  • the toroidal cylinder 5 comprises two high precision semicircular alloy tubes joined together, as in Figure 3, to form a precise torus-shaped cylinder.
  • the installation opening 9 and the gear opening 10 have matching concave or convex, jigsaw shaped and inclined ends for enabling a good seal to be achieved when the engine is assembled.
  • the gear opening 10 provides a gap through which the annular gear-piston can engage a driven gear
  • the slanted ends serve to minimise any edge effects where the two half tubes join.
  • the jigsaw-shaped ends can provide high mechanical strength and effective sealing.
  • the cylinder entry port 7 and exit port 8 are tangential to the cylinder. This determines the direction of the gear-piston rotation and assists the effective escape of exhaust gases.
  • the ports 7,8 should be located as far as possible from each other so as to obtain maximum displacement.
  • the two rows of lubricant holes 11 are arranged in a criss-cross pattern and can ensure the toroidal cylinder tube strength while achieving full lubrication.
  • the annular gear piston 3 ( Figure 4A) is formed of a number of piston pieces 47 connected together end-to-end in a circle.
  • Each of the piston pieces 47 ( Figure 5) includes an eccentric hollow space forming a piston chamber 21.
  • Gear teeth 14, the grooves 15 between the gear teeth, and gas apertures 16 are made on the thicker, outer wall 17 of each piston piece 47.
  • the thinner, inner wall 18 has a smooth surface to ensure strength and to resist wear.
  • Piston ring grooves 19 are set on the apex of the gear tooth top land at each end of the piston piece for accommodating a piston ring 20 ( Figure 6).
  • Gas apertures 16 for the ingress and egress of gas into and out of the piston chamber 21 are made at the bottom land within each groove 15 of the annular gear piston.
  • Apertures are provided on both sides of the central ridge area 22 to ensure structural strength.
  • At each end of the piston piece there are dodecagonal mounts 23 for mounting seal-connectors 45 ( Figure 7) and installation grooves for holding internal circlips 24 to hold the mounts 23 of the piston piece in place.
  • the piston rings 20, best seen in Figure 6, are provided for sealing purposes.
  • the ends 43 are jigsaw shaped for connection and improved sealing.
  • the edge 44 that directly comes in contact with the internal surface of the cylinder will be curved to minimize the wear to the surface.
  • Figure 6 also includes sectional views of the piston ring.
  • the piston ring is actually two rings 50, 51, one inside the other.
  • One of the rings has a tongue or flange 52 around its inner or outer circumference, that fits within a groove 53 extending around the outer or inner circumference respectively, of the other ring.
  • the effect is an annular tongue-and-groove arrangement.
  • the complex piston ring 20 has flexibility that enables effective sealing both horizontally and vertically. It is installed on the piston piece then connected with seal-connectors and inserted through the installation opening into the cylinder to form a complete annular gear piston 3. Thus the wear and vibration caused by the centrifugal forces acting on the top of the gear teeth can be minimised.
  • the single piston working volume is formed after assembly. It is formed of three parts, comprising the inner chamber 21 of the piston piece, gas apertures 16 and gear teeth groove chamber 15. The installation opening is capped and sealed after the piston pieces are installed inside the toroidal cylinder.
  • the intermeshing teeth of the driven gear 4 and the annular gear piston 3 need to be accurately designed and shaped so as not to wear out the top of the gear teeth and the piston rings.
  • the surfaces of the cylinder wall, annular gear piston and piston rings etc., which slide against each other, producing some friction, are plated with a super-hard smooth coating, which will greatly enhance engine performance.
  • the casing 6 ( Figures 8A and 8B) comprises two interlocking alloy castings 36. It serves to hold and stabilise the toroidal cylinder 5 and the driven gear 4, as well as cooling, exchange heat and lubricate. One end of the shaft of the driven gear 4 will extend out of the casing.
  • the gas entry port 7, exhaust port 8, coolant inlet 25, and coolant outlet 26 are all on the casing.
  • Vapour formed from cooling and heat exchange may be led into a second, coaxial circular run gear-piston (not shown) to boost the energy output from the combustion gases.
  • a second, coaxial circular run gear-piston not shown
  • that steam can be used to drive a second engine of the present invention, perhaps mounted in series of parallel with the first one, to increase the work output.
  • a heat exchanger (not shown) can also be installed at the exhaust outlet, to recover exhaust heat to do additional work, so as to maximise the use of fuels and to minimise waste.
  • the external combustion chamber 1 ( Figure 9A) comprises the combustion sub-chamber 29 and the expansion sub-chamber 30 sealed together. These two sub chambers are made from heat- resistant alloy cast, which has an overall dumb-bell-like shape, with a waist 31.
  • the wall of the combustion sub-chamber 29 has a fuel mixture inlet entry 32, an electronic ignition device installation opening 33 and a vapour outlet 34.
  • At the neck of the combustion chamber 35 there is an inlet 36 provided for expanding agents (such as water, etc.) which expand with the heat of combustion to assist the gas propulsion.
  • expanding agents such as water, etc.
  • There is a mixing device 37 inside the expansion sub- chamber 30 (seen in cross-section in Figure 9B).
  • the vapour outlet 38 includes a regulator valve 39 to control the combustion rate inside the chamber for continuous, stable pressure, and complete combustion.
  • a regulator valve 39 to control the combustion rate inside the chamber for continuous, stable pressure, and complete combustion.
  • fuels and accelerants are mixed in accurately determined proportions then injected into the combustion sub-chamber to be electronically ignited for continuous, stable pressure combustion.
  • the high temperature and high-pressure gas resulting from the combustion will be led into the Circular Run Gear-Piston 2 to do work.
  • Figures 11 to 13 illustrate alternative arrangements to various details of the present invention.
  • Figures 1 IA and 1 IB show an alternative toroidal cylinder 40.
  • Figures 12A to 12C illustrate an alternative gear-piston arrangement, in which the driven gear 4 is located internally of the annular gear, and the pistons 47 are arranged around the outside of the annular gear-piston 41, to receive the hot combustion gas directly from the combustion chamber.
  • Figure 13 shows these two variations combined together in a single embodiment.
  • the piston chambers 46 are defined by the spaces between the vanes 42, the body of the gear piston wheel 41 itself, and the inner surface 49 of the toroidal cylinder.
  • the outer edge of each vane is provided with a piston ring groove 19, to accommodate a piston ring.
  • they are composite rings 20, just as described earlier with reference to the first embodiment.
  • the first approach is to introduce expanding agents into the combustion chamber system to increase energy conversion efficiency.
  • the second approach is to insulate the system and use heat exchanges to transfer heat from the exhaust gases to increase energy use.
  • One approach should be selected and the engine designed accordingly.
  • the best of the Circular Run Gear-Piston engine's series of technical parameters and standards, materials' properties, processing accuracy also can to be determined by prototype testing, and may also depend upon the particular use to which the engine is to be put.
  • This invention described herein has characteristics which allow it to take various forms, from small engines several watts output, to huge engines of several hundred megawatts, depending on the application. Of course, they can be used alone or connected in parallel or series to produce any desired level of mechanical power. For example, in a motor vehicle, there could be one engine positioned alongside, and operatively connected to, each driving wheel of the vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

La présente invention a trait à un moteur à piston d'avance à fonctionnement circulaire qui comprend une chambre de combustion externe (1) reliée à un cylindre toroïdal (5) par l'intermédiaire d'un orifice d'entrée de fluide (7), un orifice de sortie de fluide (8) permettant aux fluides d'échappement de quitter le cylindre (5), et un piston d'avance annulaire (2) doté d'une denture (14) qui est adaptée pour fonctionner à l'intérieur du cylindre (5), et dans lequel un fluide chauffé provenant de la chambre de combustion (1) peut pénétrer dans le cylindre (5) par l'intermédiaire de l'orifice d'entrée de fluide (7) et peut faire avancer le piston d'avance annulaire (2), et la denture (14) du piston d'avance annulaire (2) s'engrène avec une roue menée(4) et peut l'entraîner.
PCT/NZ2008/000149 2007-07-09 2008-06-18 Moteur à piston d'avance à fonctionnement circulaire WO2009008743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ55641807A NZ556418A (en) 2007-07-09 2007-07-09 Circular run gear wheel-piston engine
NZ556418 2007-07-09

Publications (1)

Publication Number Publication Date
WO2009008743A1 true WO2009008743A1 (fr) 2009-01-15

Family

ID=39689380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2008/000149 WO2009008743A1 (fr) 2007-07-09 2008-06-18 Moteur à piston d'avance à fonctionnement circulaire

Country Status (2)

Country Link
NZ (1) NZ556418A (fr)
WO (1) WO2009008743A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102061982A (zh) * 2011-01-19 2011-05-18 王仲彦 转盘式发动机
WO2013073972A1 (fr) * 2011-11-16 2013-05-23 Jason Lew Moteur froid utilisant l'énergie thermique de l'air pour produire un travail, une réfrigération et de l'eau

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB759110A (en) * 1954-08-14 1956-10-10 Charles John Francis Improvements in or relating to internal combustion engines
US3886734A (en) * 1973-05-23 1975-06-03 Richard G Johnson Continuous combustion engine
GB1582752A (en) * 1976-09-23 1981-01-14 Flinn H I Power plant
US5970924A (en) * 1995-06-29 1999-10-26 Pyon; Sang-Bok Arc-piston engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB759110A (en) * 1954-08-14 1956-10-10 Charles John Francis Improvements in or relating to internal combustion engines
US3886734A (en) * 1973-05-23 1975-06-03 Richard G Johnson Continuous combustion engine
GB1582752A (en) * 1976-09-23 1981-01-14 Flinn H I Power plant
US5970924A (en) * 1995-06-29 1999-10-26 Pyon; Sang-Bok Arc-piston engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102061982A (zh) * 2011-01-19 2011-05-18 王仲彦 转盘式发动机
WO2013073972A1 (fr) * 2011-11-16 2013-05-23 Jason Lew Moteur froid utilisant l'énergie thermique de l'air pour produire un travail, une réfrigération et de l'eau
JP2015502482A (ja) * 2011-11-16 2015-01-22 リュウ、ジェイソン 空気熱エネルギーを利用して仕事、冷却、および水を出力するための低温状態エンジン
US9347437B2 (en) 2011-11-16 2016-05-24 Jason Lew Cold state engine for utilising air thermal energy to output work, refrigeration and water

Also Published As

Publication number Publication date
NZ556418A (en) 2008-07-31

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