WO1994004793A1 - Moteur rotatif a ailettes axiales - Google Patents

Moteur rotatif a ailettes axiales Download PDF

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Publication number
WO1994004793A1
WO1994004793A1 PCT/CA1993/000337 CA9300337W WO9404793A1 WO 1994004793 A1 WO1994004793 A1 WO 1994004793A1 CA 9300337 W CA9300337 W CA 9300337W WO 9404793 A1 WO9404793 A1 WO 9404793A1
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WO
WIPO (PCT)
Prior art keywords
rotor
engine
vane
cam
portions
Prior art date
Application number
PCT/CA1993/000337
Other languages
English (en)
Inventor
Brian W. Cherry
Original Assignee
Regi U.S., Inc.
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 Regi U.S., Inc. filed Critical Regi U.S., Inc.
Priority to AU46962/93A priority Critical patent/AU4696293A/en
Publication of WO1994004793A1 publication Critical patent/WO1994004793A1/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
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3448—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member with axially movable vanes

Definitions

  • This invention relates to rotary engines having vanes which are axially slidable through the rotor.
  • rotary engine is the axial va ⁇ type which is seen, for example, in United States Patent No. 4,401,070 to McCann.
  • Such engines employ a plurality of axially slidable vanes on the rotor which are circumferentially spaced apart. The vanes reciprocate back and forth as the rotor rotates. This action is accomplished by a cam surface on each side of the rotor. When the vanes slide towards the rotor on one side thereof, the space between the rotor and the motor housing decreases, thus compressing gases. In the McCann engine, the gases are compressed in front of each vane in a space between the rotor and the housing.
  • the McCann engine uses passageways in the motor housing and rotor which are aligned at the critical time to permit the compressed charge to be transferred from in front of the rotor to a position behind the rotor.
  • the invention provides an axial vane rotary engine having a housing with spaced-apart sides and a peripheral wall defining a cylindrical interior chamber.
  • a rotor is rotatably mounted within the chamber of the housing.
  • a plurality of angularly spaced- apart, axially extending slots are formed in the rotor.
  • An axially slidable vane is received in each of the slots.
  • Each vane has an outer portion sealingly engaging the cam surface and forming fluid receiving and pressurizing spaces between adjacent said vanes.
  • the cam surface has a plurality of alternating high cam portions and low cam portions.
  • the high cam portions are closer to the rotor than the low cam portions.
  • the vanes extend further from the rotor in the low cam portions compared to the high cam portions so the fluid receiving and pressurizing spaces are compressed when adjacent the high cam portions compared to positions adjacent the low cam portions.
  • Air intake means for intaking air into the spaces.
  • Fuel intake means is provided for intaking fuel into the spaces.
  • ignition means for igniting an air/fuel mixture in the spaces and exhaust means for exhausting exhaust gases from the spaces.
  • ignition takes place between a first vane and a second vane after the first vane has passed a first of the high cam portions and while the second vane is on the high cam portion, thereby exposing a larger area of the first vane to the ignited mixture compared to the second vane to propel the first vane and rotate the rotor.
  • Fig. 1 is a diagrammatic side elevation of a rotary engine according to an embodiment of the invention
  • Fig.2 is an unfolded geometrically developed view of a fragment of the housing, rotor and two vanes thereof showing the position upon compression of the mixture;
  • Fig. 3 is a view similar to Fig. 2 showing the positions of the two vanes upon combustion
  • Fig. 4 is an unfolded geometrically developed view of the path of the vanes as they traverse one complete revolution within the engine housing;
  • Fig. 5 is a diametrical section through the housing and rotor of the engine
  • Fig. 6 is a perspective view of one of the cam rings thereof;
  • Fig. 7 is a side elevation of one of the vanes
  • Fig. 8 is a fragmentary top elevation showing the outer portion of one of the vanes engaging the cam surface
  • Fig. 9 is a fragmentary top elevation showing the outer portion of one of the vanes engaging the cam surface near a spark plug fuel injector and compression adjuster
  • Fig. 10 is a simplified diametrical section of a variation of the invention using one side of the engine as a compressor to serve as a supercharger for the other side of the engine;
  • Fig. 11 is a view similar to Fig. 1 showing another variation of the invention.
  • Fig. 12 is a view similar to Fig. 4 showing the variation of Fig. 11;
  • Fig. 13 is a sectional view of the side wall of the housing of the embodiment of Fig. 1-8 showing the groove for propagating ignited gases.
  • a rotary engine 20 which has a housing 22, a rotor 24 rotatably mounted on a shaft 26 and a plurality of vanes 28, 29, 30, 31, 32, 33, 34 and 35.
  • the housing 22 is in two halves 36 and 38 which are joined together at the center of the engine by a series of bolts 40 extending through flanges 42 and 44 which have an annular seal 46 therebetween.
  • the housing has spaced- apart opposite sides 48 and 50 with annular peripheral wall 52 extending therebetween to define a cylindrical interior chamber 54.
  • the chamber is substantially occupied by the rotor 24.
  • cam rings 56 and 58 The sides 48 and 50 of the housing have cam rings 56 and 58.
  • cam ring 56 has two high cam surfaces 60 and 62 and two low cam surfaces 64 and 66.
  • cam ring 58 has high cam surfaces 68 and 70 and low cam surfaces 72 and 74.
  • the high cam surfaces of each side are aligned with the low cam surfaces of the other side.
  • high cam surfaces 60 and 62 of cam ring 56 are aligned with low cam surfaces 72 and 74 of cam ring 58.
  • the rotor 24 has a plurality of angularly spaced-apart, axially extending slots 76 as best shown in Fig 1. There are eight slots in this example, each one slidably receiving one of the vanes though the number of slots and vanes is not critical.
  • the vanes reciprocate axially as they move about the cam rings during rotation of the rotor.
  • vanes 30 and 34 are at their furthest position towards cam ring 58 while travelling over low cam surfaces 72 and 74.
  • vanes 28 and 32 are at the furthest degree of movement towards cam ring 56 while travelling over its low cam surfaces 64 and 66.
  • each vane has two portions joined together with a plurality of coil springs 82 in this example. These springs bias the portions 78 and 80 outwardly to remain in sealing contact with the cam rings despite differences in dimensions due to variable cam ring spacing, thermal expansion and the like.
  • the outer portion of vane 28 is shown in better detail in Fig. 8 which shows this portion of the vane in contact with cam ring 56.
  • the other vanes are similar.
  • the side seal has a protrusion 86 which slidably fits within slot 88 in main body 90 of the vane.
  • a coil spring 91 located at the inner end of the slot biases the side seal 84 outwardly against the cam ring 56.
  • Roller 94 is rotatably mounted on the outer end of the side seal by an axle 96. Seals 98 and 100 are located in slots 99 and 101 on the outer tip of each seal. The seals are biased outwardly by springs 102 and 104.
  • the seals contact the cam surface 56 to ensure sealing at the tip of the vane.
  • the rollers 94 engages the cam ring 56.
  • the rotor 24 has slots 106 which slidingly receive seals 108 which are biased against the side seals 84 of the vanes by springs 110. There is a total of eight such seals 108 per vane. Another such seal (not shown) on the side opposite seal 108 and two more on the perpendicular sides. This is duplicated on the opposite end of each vane.
  • Shaft 26 of the rotor is rotatably mounted in the housing 22 by means of bearings 112 and 114 shown best in Fig. 5.
  • the cam rings are secured to the sides 48 and 50 of the housing by means of a plurality of bolts 116, only one of which is shown in Fig. 5.
  • Seals 120 and 122 extend about the shaft 26 between the shaft and the housing. Seals 124 and 126 are located between rotor 24 and the housing adjacent the shaft 26. The outer portion of the rotor is provided with seals 128, 130, 132 and 134 between the rotor and the housing.
  • an intake port 140 shown in Fig. 1 and 4 which is in the form of three apertures, 141, 142 and 143 in cam ring 56 as seen best in Fig. 6.
  • This is connected to an air intake, typically equipped with an air cleaner (not shown).
  • a lean fuel mixture is also taken in through air intake 140 with the air.
  • This can be supplied from a carburetor or external fuel injector.
  • the intake port is located at the beginning of sloped transition portion 145 of the cam ring which connects high cam surface 62 with low cam surface 64 as seen in Fig. 4.
  • vane 35 moves in the direction of rotation indicated by arrow 144 at the top of Fig. 4
  • the vane moves to the left from the point of view of this drawing, increasing the volume of space 146 between vane 35 and vane
  • vane 34 is in the position of vane 35 at the top of Fig. 4, the space 146 is sealed. Compression of the air and lean fuel mixture begins and vane 35 moves to the position of vane 29. The mixture is further compressed as vane 35 reaches the position shown in Fig. 4 for vane 30. It may be readily seen that space 150 is significantly smaller than spaces 148 or 152. The maximum compression of the mixture occurs as vane 34 approaches the beginning of high cam portion 60 as seen in Fig. 2. Vane 35 then moves just past the high cam portion 60 on transition portion 154 as seen in Fig. 3. The vane 35 is then past spark plug 156 and fuel injector 158. In this embodiment the spark plug 156 is mounted on an auxiliary combustion chamber 160, shown only in Fig. 1, which communicates with the space 157 between the cam ring and the rotor.
  • the high cam surface 60 is spaced-apart from the rotor to allow the compressed mixture to pass by the high cam portion to enter the area adjacent the fuel injector and spark plug as shown in Fig. 3.
  • the space 146 is sealed rearwardly as vane 34 contacts the high cam surface 60. This configuration avoids the need for passageways in the rotor and temporary storage locations for compressed gases as found in some prior art devices.
  • FIG. 9 A variation of the invention is shown in Fig. 9 where vane 35.1 is shown approaching fuel injector 158.1 and spark plug 156.1.
  • a compression adjustor 180 in the form of a threaded member extending through the housing 22 to the combustion chamber formed adjacent the fuel injector and spark plug.
  • the compression can be increased by screwing adjuster 180 inwardly towards the vane or reduced by rotating in the opposite direction. This allows the compression to be adjusted for different fuels.
  • Fig. 10 shows an alternative engine 20.2 equipped with vanes 182 and 184 which have smaller outer portions 186 and 188 on one side compared to outer portions 190 and 192 on the other side.
  • side 194 is configured as an engine
  • side 196 is configured as a compressor.
  • the air compressed on side 196 enters one or more burners 198, each of which is equipped with a fuel injector 200 and a spark plug 202.
  • the combustion of the air/fuel mixture is external to the housing of the engine and enters the engine at ports (not shown) adjacent the position just past the high cam surface where the space between vanes begins to expand as the rotor rotates.
  • Such a configuration can have four power impulses per revolution with four vanes.
  • Figs. 11 and 12 show another variation by way of engine 20.3 which has six vanes instead of eight. This may be preferable in some cases at least because it increases dwell time between "strokes" of the engine. Otherwise it corresponds to the version in Fig. 1 and 4 and like parts have like numbers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

Un moteur rotatif a ailettes axiales comprend un carter à faces latérales mutuellement espacées ayant une paroi périphérique qui définit une chambre intérieure cylindrique. Un rotor est monté rotatif dans la chambre intérieure du carter. Une surface annulaire à came axialement écartée du rotor est située sur au moins une des faces latérales du carter, à l'intérieur de la chambre intérieure. Une pluralité de fentes axiales séparées par des écartements angulaires sont ménagées dans le rotor. Une ailette mobile axialement est reçue dans chaque fente. Chaque ailette comprend une partie extérieure en contact hermétique avec la surface à came, formant des espaces de réception et de pressurisation de fluide entre des ailettes adjacentes. La surface à came comprend une pluralité de parties élevées et de parties basses alternées. Les parties élevées et les parties basses sont écartées du rotor et les parties élevées sont plus proches du rotor que les parties basses. Les ailettes s'éloignent davantage du rotor dans les parties basses que dans les parties élevées, de sorte que les espaces de réception de fluide sont davantage comprimés lorsqu'ils sont adjacents aux parties élevées que lorsqu'ils sont dans des positions adjacentes aux parties basses. Un organe d'admission d'air laisse entrer de l'air dans les espaces. Un organe d'admission de carburant laisse entrer du carburant dans les espaces. Une bougie d'allumage allume un mélange d'air/carburant dans les espaces et un échappement décharge les gaz d'échappement contenus dans les espaces.
PCT/CA1993/000337 1992-08-19 1993-08-19 Moteur rotatif a ailettes axiales WO1994004793A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46962/93A AU4696293A (en) 1992-08-19 1993-08-19 Axial vane rotary engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US93122292A 1992-08-19 1992-08-19
US931,222 1992-08-19

Publications (1)

Publication Number Publication Date
WO1994004793A1 true WO1994004793A1 (fr) 1994-03-03

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Application Number Title Priority Date Filing Date
PCT/CA1993/000337 WO1994004793A1 (fr) 1992-08-19 1993-08-19 Moteur rotatif a ailettes axiales

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AU (1) AU4696293A (fr)
CA (1) CA2085187C (fr)
WO (1) WO1994004793A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429084A (en) * 1994-02-25 1995-07-04 Sky Technologies, Inc. Axial vane rotary device and sealing system therefor
WO2013051025A2 (fr) * 2011-08-09 2013-04-11 Ingole Vijay Tulshiram Moteur à combustion interne rotatif
CN111022179A (zh) * 2019-12-05 2020-04-17 曹玉玲 滑片式发动机
US11085300B1 (en) 2017-09-08 2021-08-10 Regi U.S., Inc. Prime movers, pumps and compressors having reciprocating vane actuator assemblies and methods

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942484A (en) * 1973-09-12 1976-03-09 Pile Delbert W Impeller type engine
US4004556A (en) * 1969-09-08 1977-01-25 Rolf Alfons Pfeiffer Rotary internal combustion engine of axially sliding vane type
US4170213A (en) * 1977-03-07 1979-10-09 Benwilco, Inc. Rotary engine
EP0130171A1 (fr) * 1983-06-23 1985-01-02 Jean Victor Becker Moteur rotatif à combustion interne
EP0333883A1 (fr) * 1987-09-21 1989-09-27 BOGDANOV, Petr Andreevich Moteur a combustion interne a piston rotatif

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004556A (en) * 1969-09-08 1977-01-25 Rolf Alfons Pfeiffer Rotary internal combustion engine of axially sliding vane type
US3942484A (en) * 1973-09-12 1976-03-09 Pile Delbert W Impeller type engine
US4170213A (en) * 1977-03-07 1979-10-09 Benwilco, Inc. Rotary engine
EP0130171A1 (fr) * 1983-06-23 1985-01-02 Jean Victor Becker Moteur rotatif à combustion interne
EP0333883A1 (fr) * 1987-09-21 1989-09-27 BOGDANOV, Petr Andreevich Moteur a combustion interne a piston rotatif

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429084A (en) * 1994-02-25 1995-07-04 Sky Technologies, Inc. Axial vane rotary device and sealing system therefor
WO2013051025A2 (fr) * 2011-08-09 2013-04-11 Ingole Vijay Tulshiram Moteur à combustion interne rotatif
WO2013051025A3 (fr) * 2011-08-09 2013-07-04 Ingole Vijay Tulshiram Moteur à combustion interne rotatif
US11085300B1 (en) 2017-09-08 2021-08-10 Regi U.S., Inc. Prime movers, pumps and compressors having reciprocating vane actuator assemblies and methods
CN111022179A (zh) * 2019-12-05 2020-04-17 曹玉玲 滑片式发动机

Also Published As

Publication number Publication date
CA2085187A1 (fr) 1994-02-19
AU4696293A (en) 1994-03-15
CA2085187C (fr) 2004-10-05

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