WO2018037197A1 - Moteur - Google Patents

Moteur Download PDF

Info

Publication number
WO2018037197A1
WO2018037197A1 PCT/GB2016/052649 GB2016052649W WO2018037197A1 WO 2018037197 A1 WO2018037197 A1 WO 2018037197A1 GB 2016052649 W GB2016052649 W GB 2016052649W WO 2018037197 A1 WO2018037197 A1 WO 2018037197A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
stator
rotor
engine
chamber
Prior art date
Application number
PCT/GB2016/052649
Other languages
English (en)
Inventor
Peter John SULLIVAN
Original Assignee
Sullivan Peter John
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 Sullivan Peter John filed Critical Sullivan Peter John
Priority to PCT/GB2016/052649 priority Critical patent/WO2018037197A1/fr
Publication of WO2018037197A1 publication Critical patent/WO2018037197A1/fr

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
    • F01C3/00—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
    • F01C3/02—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees
    • 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
    • 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
    • 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
    • F02B2730/03—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with piston oscillating in a housing or in a space in the form of an annular sector
    • 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

  • the present invention relates to improvements in relation to engines and more particularly to compact rotary piston engines which can be implemented in a much smaller size for mounting, for example, directly on a vehicle axle to drive an individual wheel.
  • Spark ignition reciprocating engines are well known for use in many applications such as propelling vehicles.
  • the engine is located in an engine compartment and rotary motion produced by the engine is transmitted to the required driven members, such as the wheels of a vehicle, by suitable drive shafts and gear box(es).
  • these known engines have the drawback that they are usually very heavy and located remote from the driven members such that the length of the drive shafts introduce additional friction losses and thereby reduction in efficiency.
  • a rotary piston engine comprised of a rotor and a stator.
  • the rotor has a rotor body and a rotor element moveably mounted on the rotor body.
  • the stator has a stator body and a stator element moveably mounted on the stator body.
  • the rotor is rotatable relative to the stator such that, as the rotor rotates the rotor element moves towards the stator element, compressing fuel between the two elements.
  • the two elements As the two elements come together, they each rotate relative to their respective body so as to allow the rotor element to move past the stator element, during the course of which movement the compressed fuel is ignited so as to propel the rotor element away from the stator element and hence drive the rotation of the rotor.
  • an engine comprising one of a fixed stator and a rotor having a circular opening formed therein, the other of the stator and rotor mounted concentrically within the circular opening such that a circular radial space exists between the rotor and the stator , and at least one piston member engaged in the radial space between the rotor and stator, the or each piston members being movable along said space relative to one of the rotor and the stator and being a sealing fit between said rotor and stator so as to be a fluid tight fit therewith, the other of the rotor and the stator further including a plurality of chambers, each of which opens into the radial space and which form combustion and/or exhaust chambers for the engine, each chamber housing a rotary member which is a fluid tight seal across the radial space, whereby as the or each piston moves along the radial space, fuel is compressed by the piston into one of the chambers against the rotary member housed therein as the piston moves towards the chamber
  • An engine in accordance with the invention has the advantage that it provides a practical solution for implementing the rotary piston engine of the prior art in a manner which maintains the compact design. Furthermore, the engine of the invention can be realised into a design that is easily to manufacture and assemble, and preferably is of modular construction so as to enable more than one engine to be mounted in series on a shaft and/or to have the ability to have further expansion of the combustion products in units mounted in series so as to increase the thermal efficiency of the system. It will be understood that whilst described above and hereinafter in connection with an engine, the system may also be implemented as a compressor with rotational drive being used to move the pistons to compress gas as required.
  • the shape of the engine lends itself to hybrid applications in particular where packaging on the same axis as an electric motor would be easier than with a reciprocating engine. However the shape may also offer advantages for other applications such as unmanned aerial vehicles (UAVs) and small generator sets.
  • UAVs unmanned aerial vehicles
  • the configuration of the engine means that the expansion period of the engine is not limited in the same way as a reciprocating engine so there is potential to extract more energy from the expanding gases before they are released to the atmosphere, hence increasing thermal efficiency.
  • the chambers should be equi-angularly distributed around the rotor/stator and preferably, an even number if chambers is provided in the engine which alternate as combustion and exhaust chambers.
  • four chambers are provided spaced at 90 degree intervals around the engine so that each piston goes through two combustion events per revolution. Three pistons may then be provided distributed around the engine such that 6 combustion events occur per cycle.
  • the rotary member operates to rotate the piston through 180 degrees as it passes through the chamber.
  • each rotary member includes a camming surface which is engaged by a cam follower provided on the each piston as a piston approaches the chamber, the engagement between the cam and cam follower automatically causing the rotary member to rotate as the piston approaches the chamber and to further rotate as the piston moves away from the chamber.
  • An engine comprising one of a fixed stator and a rotor having a circular opening formed therein, the other of the stator and rotor mounted concentrically within the circular opening such that a circular radial space exists between the rotor and the stator , and at least one piston member engaged in the radial space between the rotor and stator, the or each piston members being movable along said space relative to one of the rotor and the stator and being a sealing fit between said rotor and stator so as to be a fluid tight fit therewith, the other of the rotor and the stator further including a plurality of chambers, each of which opens into the radial space and which form combustion and/or exhaust chambers for the engine, each chamber housing a rotary member which is a fluid tight seal across the radial space, whereby as the or each piston moves along the radial space, fuel is compressed by the piston into one of the chambers against the rotary member housed therein as the piston
  • the rotary member advantageously includes a plurality of arms, each of which has a slot extending radially from its end towards the centre of the rotary member, the slot receiving a pin carried on the piston as the piston moves towards the chamber, whereby upon engagement of the pin in the slot, the rotary member is caused to rotate as the piston moves towards the chamber and to continue to rotate in the same direction as the piston moves away from the chamber following combustion.
  • the rotary member prefferably includes 3 pockets equi-angularly located around the rotary member, each pocket being sized to receive the piston during its passage through the chamber. Each pocket then has an arm associated with it for effecting movement of the rotary member as the piston moves into that pocket. In this way, each pocket in turn receives a piston with the next pocket being left in position for the next combustion event as the piston disengages from the slot in the arm.
  • the stator has the circular opening formed therein and the rotor is mounted in the stator, the chambers then being formed in the stator.
  • Ignition means is preferably associated with alternate chambers for igniting the compressed fuel and exhaust means such as an exhaust port is associated with the other chambers for exhausting combustion gases from behind each piston after the combustion pressure has subsided.
  • said one of the rotor and stator of the engine which provides the output has at least one drive dog extending axially from or drive recess formed axially in an output face and the other of the rotor and stator has a complementary recess of drive dog formed in an input face.
  • a pair of engines may be connected in series with the rotor or stator of the first engine drivingly engaged with the stator or rotor of the second engine so that the second engine is caused to rotate with the first engine before any additional drive is added by the secondary engine itself. In this was the output speed of the second engine is increased.
  • the present invention further provides at least two engines, each according to the invention, arrange with one of the rotor or stator of a first engine drivingly connected to the other of the rotor or stator of a second engine in a series relationship such that the second engine is caused to rotate with the first engine.
  • Figure 1 is a schematic view of part of an engine according to the invention at the start of a compression phase of operation
  • Figure 2 is an enlarged view of part of the engine of Figure 1 approaching the end of the compression phase
  • Figure 3 is an enlarged view corresponding to Figure 2 at the end of the compression phase
  • Figure 4 is an enlarged view corresponding to Figure 2 with a piston member moving away from a combustion chamber as part of an expansion phase of operation;
  • Figure 5 is a reduced scale view corresponding to Figure 4
  • Figure 6 is an enlarged view corresponding with Figure 1 showing a rotary mechanism which cooperates with the piston member to rotate it during engine cycle;
  • Figure 7 is a view corresponding with Figure 6 with the piston in a second position;
  • Figure 8 is a view corresponding with Figure 6 with the piston in a third position;
  • Figure 9 is a schematic view of the engine of Figure 1 showing an arrangement for inlet and outlet ports;
  • Figure 10 is alternative views of the arrangement of Figure 9;
  • Figure 11 is a perspective view of a pair of engines according to the invention arranged in series to provide a step up in output speed;
  • Figure 12 is an illustrative section view through the pair of engines of Figure 11 showing the series connection between the two engines.
  • Figure 13 is a detailed sectional view of a series interconnection between a pair of engines of the invention.
  • FIG. 1 where is shown a schematic representation of a rotary piston engine according to the invention.
  • the engine is comprised of a rotor 1 which is concentrically mounted in a generally circular opening 3 formed in a stator 2, the rotor 1 being configured to be rotatable about its centre la relative to the stator 2.
  • the rotor 1 is smaller than the size of the circular opening 3 in the stator 2 such that a radial space 4 exists between the rotor 1 and the stator 2 about the entire outer periphery of the rotor 1, which space 4 forms a track for piston members 5 to travel around.
  • One such piston member 5 is shown in the Figures but it will be understood that multiple pistons will typically be utilised.
  • Each piston 5 is carried along the track in a radial pocket la formed in the outer surface of the rotor, the engagement of the piston with both the rotor and the stator being a close tolerance fit such that fluid, in particular fuel for combustion, may be compressed ahead of the piston as it travels around the track 4 as described below.
  • Each piston furthermore has a pin 5a extending axially from at least one face as shown in Figure 7, the purpose of which is described below.
  • a plurality of pockets 7a, 7b, 7c Distributed around the stator 2 are a plurality of pockets 7a, 7b, 7c. In the illustrated embodiment, three such pockets are shown with the fourth being located diametrically opposite the upper pocket 7b. It will, however, be understood that other numbers of pockets are possible, although if following the principle of the illustrated embodiment in which pockets alternate been ignition pockets and exhaustion pockets, an even number of pockets would be necessary.
  • each pocket 7a, 7b, 7c is either an ignition pocket 7b or an exhaust pocket 7a, 7c.
  • the ignition pocket 7b has a rotary member 8 mounted therein which is rotatable about the centre of the pocket 7b and which extends across the track 4 so as to form a fluid tight barrier in the track.
  • Each rotary member 8 further has a series of recesses 8a distributed equi-angularly around its circumference - 3 in the illustrated embodiment, each recess 8a being sized such that the piston 5 is a close tolerance fit therein.
  • the rotary member 8 is furthermore connected in a rotationally fast manner to star shaped rotary guide member 9 which is located axially adjacent the rotary member 8 and has a series of arms 9a which extend behind the rotor, stator and track.
  • the rotary guide member 9 has three arms 9a to corresponds with the three recesses 8a formed in the rotary member 8.
  • Each arm furthermore has a guide slot 10 formed therein which extends radially from the end of the arm 9a towards the centre of the rotary guide member 9, each slot being size to complement the pin 5a formed on the piston such that the pin 5a engages in one of the slots 10 as it moves along the track and travels therealong, causing the rotary guide member 9 to rotate through a camming action with the pin 5 a as the piston approaches the rotary member 7b as illustrated in Figures 2 to 4.
  • the ignition portion of the cycle operates as follows:
  • Fuel and air are introduced into the track 4 ahead of the piston 5 via an inlet port 10 located between the exhaust pocket 7a and the next ignition pocket 7b as illustrated in Figure 10.
  • the fuel/air mixed is compressed ahead of the piston against the facing recess 8a of the rotary member 8.
  • the rotary member 8 is oriented such that the open end of the slot 10 of one of the arms 9a of the rotary guide member 9 is aligned with the track 4 such that as the piston 5 approaches the ignition pocket 7b, the pin 5a on the piston automatically engages in with the open end of the slot 10 and starts to travels along the slot as it continues to move towards the rotary member 8.
  • the spaced apart centres of rotation of the piston 5 and the rotary guide member 9 develop a camming action between the pin 5 a and slot 10 which caused the rotary guide member 9 to rotate about its centre, rotating the rotary member 8 with it.
  • the piston 5 is also caused to rotate about the pin 5 a as illustrated in Figure 2, and the slot is configured such that as piston 5 reaches the ignition pocket 7b, one of the recesses 8a of the rotary member 8 is in exactly the right position for the piston to engage therein and complete the compression of the air/fuel mixture.
  • the piston and rotary member move together allowing the piston to move past the ignition pocket 7b without compromising the pressure built up in the air/fuel mixture.
  • the compressed air/fuel mixture is ignited using a spark plug or other suitable ignition means.
  • the combusted air/fuel mixture thereby begins to expand as the piston moves past the rotary member, and the resulting pressure which is developed between the recess 8a and the now back of the piston 5 pushes the piston away from the ignition pocket and thereby drives the continued rotary motion of the rotor.
  • the pin 5 a travels back along the slot 10 away from the centre of the rotary guide member 9 as the piston 5 moves away from the pocket 7b, continuing to rotate the rotary guide member 9 until it finally exits the slot 10, leaving the rotary guide member 9 in position ready for the next piston to engage in the slot 10 of the next arm 9a as it approaches the pocket 7b.
  • the rotary guide member and, therefore, also the rotary member 8 are both locked in position so as to ensure that they are correctly orientated to receive the next member during the next piston and associated pin 5a.
  • the piston 5 continues to travel along the track 4 towards the next exhaust pocket 7c, the pressure of the expanding fuel driving the movement which, in turn, drives the rotation of the rotor 1 so as to power the movement of other pistons 5 (not shown) during the ignition phase of their cycle.
  • the exhaust pocket 7c includes an exhaust port 11 which allows the exhaust gases to vent when expansion has completed, thereby preventing any back drag reducing efficiency as the piston 5 moves on to its next ignition phase.
  • the exhaust gasses are fully evacuated due to the action of the following piston which drives the exhaust gasses towards and then out of the exhaust port.
  • the exhaust pocket 7c includes a rotary guide member 12 similar to that of the ignition pocket 7b which operates to guide the movement of the piston as it travels past the exhaust pocket 7c.
  • the pistons 5 may take the form of separate cylindrical roller seals or may be formed by features integral with the rotor 1. In the illustrated embodiment, each piston goes through two combustion events per revolution, giving a total of six combustions events per revolution if three pistons are present.
  • the rotary guide member 9 provide sealing between the rotor 1 and stator 2 during compression and expansion of the gases and also rotate intermittently to allow the pistons 5 to pass whilst still maintaining a gas seal. They also transfer compressed gases from ahead of each piston to behind each piston prior to ignition.
  • the arrange of Figure 11 has a primary engine 20 and a secondary engine 30.
  • the configuration of each engine is in accordance with the description above of Figures 1 to 10, with each engine having a rotor and a stator.
  • the rotor 21 of the primary engine 20 is drivingly connected to the stator 32 of the secondary engine, so that the drive of the primary engine causes the stator of the secondary engine to rotate with the rotor 21 of the primary engine.
  • the rotor 31 of the secondary engine 30, which is itself cause to rotate relative to the secondary stator 32, rotates at a faster speed than the rotor of the primary engine, due to the fact that the drive from each of the engines 20, 30 is added together.
  • Figure 13 shows one possible configuration for the interconnection between the two engines.
  • the rotor 21 of the primary engine 20 is provided with drive pins or dogs 23, which extend axially from the output face of the rotor.
  • the stator 32 of the secondary engine 30 is then provided with complementary axial recesses 34 in its input face in which the dogs 23 of the primary engine 20 are engageable to effect a rotationally fast connection between the primary rotor 21 and the secondary stator 22, thereby effecting a series drive connection therebetween.
  • the secondary rotor 31 is also provided with dogs 33 by means of which it may be connected to the stator of a tertiary engine. From this, it can be seen that, although the system has been illustrated with just two engines, a cascade series arrange of engines can be made to meet any particular drive requires without the need for a separate gearbox.
  • the output speed may be controlled either controlling the drive or power produced by each engine in the cascade, and in particular by selective operation of each engine - when can engine is not being operated it will effectively just allow 1: 1 pass through.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

L'invention porte sur un moteur comprenant un stator fixe (2) ayant une ouverture circulaire (3) formée dans celui-ci, dans laquelle est monté concentriquement un rotor (1) de telle sorte qu'un espace radial circulaire (4) existe entre le rotor (1) et le stator (2). Un certain nombre de pistons (5) sont engagés dans l'espace radial (4) entre le rotor (1) et stator (2). Les pistons (5) sont mobiles le long de cet espace (4) par rapport au stator (2) et l'ajustement d'étanchéité de zone entre le rotor (1) et le stator (2) de manière à être en ajustement étanche aux fluides avec celui-ci. Le stator (1) comprend une pluralité de chambres (7a,7b,7c) qui s'ouvre chacune dans l'espace radial (4) et qui forment des chambres de combustion et/ou d'échappement pour le moteur. A mesure que chaque piston (5) se déplace le long de l'espace radial, le carburant est comprimé par le piston (5) dans l'une des chambres (7a,7b, 7c), et des moyens d'allumage sont associés à chaque chambre de combustion (7b) de telle sorte que le carburant comprimé est allumé dans la chambre de combustion (7b) à mesure que le piston (5) passe à travers celui-ci, appliquant une pression à l'arrière du piston (5) et entraînant ainsi son mouvement de rotation.
PCT/GB2016/052649 2016-08-25 2016-08-25 Moteur WO2018037197A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/GB2016/052649 WO2018037197A1 (fr) 2016-08-25 2016-08-25 Moteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2016/052649 WO2018037197A1 (fr) 2016-08-25 2016-08-25 Moteur

Publications (1)

Publication Number Publication Date
WO2018037197A1 true WO2018037197A1 (fr) 2018-03-01

Family

ID=56894006

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2016/052649 WO2018037197A1 (fr) 2016-08-25 2016-08-25 Moteur

Country Status (1)

Country Link
WO (1) WO2018037197A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA988035A (en) * 1973-08-29 1976-04-27 Enrico A. Carpini Rotary internal combustion engine with oscillatable pistons
WO1998020244A2 (fr) * 1996-11-01 1998-05-14 New Devices Engineering A.K.O. Ltd. Moteur a combustion interne torique
WO2002038917A1 (fr) * 2000-11-10 2002-05-16 Hubert Winterpacht Moteur a combustion interne a piston rotatif
US20050263129A1 (en) * 2004-05-27 2005-12-01 Wright Michael D Orbital engine
GB2494392A (en) 2011-09-01 2013-03-13 Peter John Sullivan Rotary piston engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA988035A (en) * 1973-08-29 1976-04-27 Enrico A. Carpini Rotary internal combustion engine with oscillatable pistons
WO1998020244A2 (fr) * 1996-11-01 1998-05-14 New Devices Engineering A.K.O. Ltd. Moteur a combustion interne torique
WO2002038917A1 (fr) * 2000-11-10 2002-05-16 Hubert Winterpacht Moteur a combustion interne a piston rotatif
US20050263129A1 (en) * 2004-05-27 2005-12-01 Wright Michael D Orbital engine
GB2494392A (en) 2011-09-01 2013-03-13 Peter John Sullivan Rotary piston engine

Similar Documents

Publication Publication Date Title
US7281513B1 (en) Inverted Wankel
US20060231062A1 (en) Orbital engine
US11078834B2 (en) Rotary valve continuous flow expansible chamber dynamic and positive displacement rotary devices
US11098588B2 (en) Circulating piston engine having a rotary valve assembly
US4057035A (en) Internal combustion engines
US4437441A (en) Rotary alternating piston gas generator
US6036461A (en) Expansible chamber device having rotating piston braking and rotating piston synchronizing systems
DE102009029950A1 (de) Garri-Brennstoffrotationskolbenmotor
GB2537011A (en) Engine
US3940925A (en) Rotary internal combustion engine
WO2018037197A1 (fr) Moteur
US3381670A (en) Rotary internal combustion engine
US20050233853A1 (en) Cometary gears output rotary engine
US2248029A (en) Internal combustion engine
CN105626241B (zh) 具有变速从动活塞的旋转式发动机
US3660978A (en) Internal combustion engine
US2958312A (en) Rotary internal combustion engine
RU2699864C1 (ru) Роторная машина объемного типа
US1273380A (en) Rotary internal-combustion engine.
WO2001020145A1 (fr) Moteur a combustion interne a rotor et a ailettes (et ses variantes), mecanisme d'oscillation d'ailettes, unite de joints d'etancheite des ailettes et palier-support du mecanisme d'oscillation d'ailettes
US4034718A (en) Internal combustion engine with rotating chambers
US20050268881A1 (en) O'Connor/Price rotary engine
USRE27191E (en) Rotary piston device
US5131359A (en) Rotating head and piston engine
US11428156B2 (en) Rotary vane internal combustion engine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16763302

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16763302

Country of ref document: EP

Kind code of ref document: A1