GB2353331A - A rotary internal combustion engine - Google Patents

A rotary internal combustion engine Download PDF

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Publication number
GB2353331A
GB2353331A GB9918771A GB9918771A GB2353331A GB 2353331 A GB2353331 A GB 2353331A GB 9918771 A GB9918771 A GB 9918771A GB 9918771 A GB9918771 A GB 9918771A GB 2353331 A GB2353331 A GB 2353331A
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GB
United Kingdom
Prior art keywords
rotary
internal combustion
combustion engine
cylinder
seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9918771A
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GB9918771D0 (en
Inventor
Alan William James
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9918771A priority Critical patent/GB2353331A/en
Publication of GB9918771D0 publication Critical patent/GB9918771D0/en
Publication of GB2353331A publication Critical patent/GB2353331A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • F01C1/344—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
    • F01C1/3441—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F01C1/3442—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • 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
    • F01C1/40—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 having a hinged member
    • F01C1/44—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 having a hinged member with vanes hinged to the inner member
    • 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
    • F02B53/08—Charging, e.g. by means of rotary-piston pump
    • 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

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  • 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

A rotary internal combustion engine 2 comprises a first cylinder 4, a first rotary piston 6 carrying a first seal 8, a second cylinder 12, a second rotary piston 14 carrying a second seal 16, and an output shaft 24 on which the first and second rotary pistons 6, 14 are mounted, wherein the rotary pistons 6, 14 are so mounted on the output shaft 24 that the first and second seals 8, 16 are angularly off-set e.g.by 90{ with respect to each other whereby gases for combustion are able to be compressed in the first cylinder 4 and then transferred to the second cylinder 12 for combustion. The seals are each urged into engagement with the cylinder walls by gases introduced into spaces 10, 18 via passages 26 and 30. In an alternative embodiment, the seals (56, 58 Fig.6) are pivoted and are urged into engagement with the cylinder walls by gases in the spaces (62) behind the seals.

Description

1 2353331 A ROTARY INTERNAL COMBUSTION ENGINE This invention relates to a
rotary internal combustion engine.
Rotary inter nal combustion engines are known. They generally comprise a cylinder, a piston in the cylinder, and a sliding vane seal which operates in a slot in the first rotary piston. The rotary internal combustion engines were developed in an attempt to improve on the efficiency of 4-stroke internal combustion engines which have induction, compression, combustion and exhaust strokes to each cycle and which tend to be wasteful of energy on the compression, combustion and exhaust strokes. The known rotary internal combustion engines are still not as efficient as they might be.
It is an aim of the present invention to provide a rotary internal combustion engine which is more efficient than known rotary internal combustion engines.
Accordingly, in one non-limiting embodiment of the present invention, there is provided a rotary internal combustion engine comprising a first cylinder, a first rotary piston in the first cylinder, a first seal which operates in the first rotary piston, a second cylinder, a second rotary piston in 2 the second cylinder, a second seal which operates in the second rotary piston, and an output shaft on which the first and the second rotary pistons are mounted, and the rotary internal combustion engine being such that the first and the second rotary pistons are so mounted on the output shaft that the first and the second seals are angularly off-set with respect to each other whereby gases for combustion are able to be compressed in the first cylinder and then transferred to the second cylinder for combustion.
By providing two rotary pistons which are able to operate together, the rotary internal combustion engine avoids loss of efficiency which is associated with just one rotary piston operating in just one cylinder.
Preferably, the rotary internal combustion engine is one in which the f irst and the second seals are angularly off-set with respect to each other by 900. The first and the second seals may be angularly offset with respect to each other by amounts other than 900 if desired.
In a first embodiment of the invention, the rotary internal combustion engine is one in which. the first seal is a first sliding vane seal which operates in a slot in the f irst rotary piston, and in which the 3 second seal is a second sliding vane seal which operates in a slot in the second rotary piston.
In the first embodiment of the invention, the rotary internal combustion engine includes first passage means which extends such that an acute angle is formed between the first passage means and the slot in the first rotary piston, and second passage means which extends such that an acute angle is formed between the second passage means and the slot in the second rotary piston, the first and the second passage means being such as to allow gases in the f irst and the second cylinders to enter the slots in the f irst and the second rotary pistons such as to f orce the first and the second sliding vane seals radially outwardly and into sealing contact with internal walls of the first and the second cylinders respectively.
In a second embodiment of the invention, the rotary internal combustion engine may be one in which the f irst seal is a first pivoting seal which pivots in a recess in the f irst rotary piston, in which the second seal is a second pivoting seal which pivots in a recess in the second rotary piston, and in which the compressed gases in the first cylinder and the combusted gases in the second cylinder act to force the first and the second pivoting seals into sealing 4 contact with the internal walls of the first and the second cylinders respectively.
The first and the second cylinders may be coupled together in any suitable and appropriate way. The rotary pistons and the seals may be any suitable and appropriate type of rotary pistons and seals, including those used in known rotary internal combustion engines.
The rotary internal combustion engine may be a petrol engine or a diesel engine.
Embodiments of the invention will now be described solely by way of example and with reference to the accompanying drawings in which:
Figure 1 is an exploded perspective view of a first rotary internal combustion engine; Figure 2 is a view like Figure 1 but in a nonexploded form; Figure 3 is an end view of part of the rotary internal combustion engine shown in Figures I and 2; Figure 4 is an end view like Figure 3 but showing a first rotary piston moved through 900 as compared with Figure 3; Figure 5 is an end view showing another part of the rotary internal combustion engine as shown in Figures 1 and 2; Figure 6 is an exploded perspective view like Figure 1 but shows a second rotary internal combustion engine; Figure 7 is an end view of part of the rotary internal combustion engine shown in Figure 6; and Figure 8 is an end view of another part of the rotary internal combustion engine shown in Figure 6.
Referring to Figures 1 - 5, there is shown a rotary internal combustion engine 2 comprising a first cylinder 4, a first rotary piston 6 in the first cylinder 4, and a f irst sliding vane seal 8 which operates in a slot 10 in the f irst rotary piston 6. The rotary internal combustion engine 2 also comprises a second cylinder 12, a second rotary piston 14 in the second cylinder 12, and a second sliding vane seal 16 in a slot 18 in the second rotary piston 14. The first and the second cylinders 4, 12 are in housing parts 20, 22 respectively and these housing parts 20, 22 can be connected together in any suitable and appropriate manner, for example by nuts and bolts (not shown).
The rotary internal combustion engine 2 includes an output shaft 24 on which the f irst and the second rotary pistons 6, 14 are mounted. The rotary internal combustion engine 2 is such that the first and the second rotary pistons 6, 14 are so mounted on the 6 output shaft 24 that the f irst and the second sliding vanes 8, 16 are angularly off-set by 900 with respect to each other. This angular off- setting of the first and the second sliding vanes 8, 16 enables the first and the second cylinders 4, 12 to exert a more continual drive on the output shaft 24 than would be the case with just one rotary piston operating in one cylinder, or with two completely separate rotary pistons operating in two completely separate cylinders in the nature of two separate rotary internal combustion engines.
The rotary internal combustion engine 2 includes first passage means 26 which extends such that an acute angle is formed between the first passage means 26 and the slot 10 in the first rotary piston 6. The rotary internal combustion engine 2 also includes second passage means 30 which extends such that an acute angle is formed between the second passage means 30 and the slot 18 in the second rotary piston 14. The first and the second passage means 26, 30 are such as to allow gases in the first and --he second cylinders 4, 12 to enter the slots 10, 18 in the first and the second cylinders 6, 14 such as to force, the first and the second sliding vane seals 8, 16 radially outwardly and into sealing contact with internal walls 7 34, 36 of the f irst and the second cylinders 4, 12 respectively.
The rotary internal combustion engine 2 has an inlet port 38 and an outlet port 40. For convenience of illustration, the inlet and outlet ports 38, 40 are shown in the form of pipes. The second cylinder 12 is also provided with a sparking plug 42 as shown. The first and the second cylinders 4, 6 are closed by end caps 44, 46 respectively as shown in Figure 2. When the first and the second cylinders 4, 12 are joined together, they are connected by a central seal 48 as shown in Figures 1 and 2.
A pipe 50 forms connecting passage means between the first and the second cylinders 4, 12. Fuel is injected into the rotary internal combustion engine 2 via a fuel pipe 52.
Referring to Figures 6, 7 and 8, there is shown a second rotary internal combustion engine 2. Similar parts as in previous Figures have been given the same reference numerals for ease of comparison and understanding.
In Figures 6, 7 and 8, it will be seen that the first and the second seals are in the form of first and second pivoting seals 54, 56 respectively instead of the f irst and the second sliding vane seals 8, 16 respectively. The pivoting seals 54, 56 each have a 8 pivot 58. The pivot 58 operates in a complementary concave recess 60 formed in the first and the second rotary pistons 6, 14. The first and the second rotary pistons 6, 14 also each have a recess 62 as shown for receiving the pivoting seals 54, 56 during a rotational cycle of the first and the second rotary pistons 6, 14. During operation of the second rotary internal combustion engine 2, the compressed gases in the first cylinder and the combusted gases in the second cylinder act to force the first and the second pivoting seals into sealing contact with internal walls of the first and the second cylinders respectively.
It is to be appreciated that the embodiments of the invention described above with reference to the accompanying drawings have been given by way of example only and that modifications may be effected.
9

Claims (7)

1. A rotary internal combustion engine comprising a first cylinder, a first rotary piston in the first cylinder, a first seal which operates in the first rotary piston, a second cylinder, a second rotary piston in the second cylinder, a second seal which operates in the second rotary piston, and an output shaft on which the first and the second rotary pistons are mounted, and the rotary internal combustion engine being such that the first and the second rotary pistons are so mounted on the output shaft that the first and the second seals are angularly off-set with respect to each other whereby gases for combustion are able to be compressed in the first cylinder and then transferred to the second cylinder for combustion.
2. A rotary internal combustion engine according to claim 1 in which the first and the second seals are angularly off-set with respect to each other by 900.
3. A rotary internal combustion engine according to claim 1 or claim 2 in which the first seal is a first sliding vane seal which operates in a slot in the first rotary piston, and in which the second seal is a second sliding vane seal which operates in a slot in the second rotary piston.
4. A rotary internal combustion engine according to claim 3 and including first passage means which extends such that an acute angle is formed between the first passage means and the slot in the first rotary piston, and second passage means which extends such that an acute angle is formed between the second passage means and the slot in the second rotary piston, the first and the second passage means being such as to allow gases in the f irst and the second cylinders to enter the slots in the first and the second rotary pistons such as to force the first and the second sliding vane seals radially outwardly and into sealing contact with internal walls of the first and the second cylinders respectively.
5. A rotary internal combustion engine according to claim 1 or claim 2 in which the f irst seal is a first pivoting seal which pivots in a recess in the first rotary piston, in which the second seal is a second pivoting seal which pivots in a recess in the second rotary piston, and in which the compressed gases in the first cylinder and the combusted gases in the second cylinder act to force the first and the second pivoting seals into sealing contact with internal walls of the first and the second cylinders respectively.
6. A rotary internal combustion engine according to any one of the preceding claims and which is a petrol engine or a diesel engine.
7. A rotary internal combustion engine substantially as herein described with reference to the accompanying drawings.
GB9918771A 1999-08-09 1999-08-09 A rotary internal combustion engine Withdrawn GB2353331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9918771A GB2353331A (en) 1999-08-09 1999-08-09 A rotary internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9918771A GB2353331A (en) 1999-08-09 1999-08-09 A rotary internal combustion engine

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GB9918771D0 GB9918771D0 (en) 1999-10-13
GB2353331A true GB2353331A (en) 2001-02-21

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008122992A1 (en) * 2007-04-09 2008-10-16 Seth, Chandan, Kumar Split cycle variable capacity rotary spark ignition engine
CN109931157A (en) * 2019-03-12 2019-06-25 江苏大学 A kind of impeller-type rotor engine
CN110195645A (en) * 2019-03-12 2019-09-03 江苏大学 A kind of multi-rotor engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB247190A (en) * 1925-02-04 1926-06-10 Hyacinthe Cuylits A fluid-operated rotary engine
GB1442230A (en) * 1973-12-03 1976-07-14 Ford Motor Co Radial seal for the piston of a rotary machine
GB1558261A (en) * 1975-07-05 1979-12-19 Kunieda E Rotary internal combustion engin
GB2078303A (en) * 1980-06-11 1982-01-06 Myo Sett A rotary internal-combustion engine
WO1999004141A1 (en) * 1997-07-16 1999-01-28 O'brien, Thea, Johanna A vane type rotary engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB247190A (en) * 1925-02-04 1926-06-10 Hyacinthe Cuylits A fluid-operated rotary engine
GB1442230A (en) * 1973-12-03 1976-07-14 Ford Motor Co Radial seal for the piston of a rotary machine
GB1558261A (en) * 1975-07-05 1979-12-19 Kunieda E Rotary internal combustion engin
GB2078303A (en) * 1980-06-11 1982-01-06 Myo Sett A rotary internal-combustion engine
WO1999004141A1 (en) * 1997-07-16 1999-01-28 O'brien, Thea, Johanna A vane type rotary engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008122992A1 (en) * 2007-04-09 2008-10-16 Seth, Chandan, Kumar Split cycle variable capacity rotary spark ignition engine
CN101636558B (en) * 2007-04-09 2012-07-04 昌丹·库马尔·塞特 Split cycle variable capacity rotary spark ignition engine
US8671907B2 (en) 2007-04-09 2014-03-18 Chandan Kumar Seth Split cycle variable capacity rotary spark ignition engine
CN109931157A (en) * 2019-03-12 2019-06-25 江苏大学 A kind of impeller-type rotor engine
CN110195645A (en) * 2019-03-12 2019-09-03 江苏大学 A kind of multi-rotor engine
CN109931157B (en) * 2019-03-12 2021-10-08 江苏大学 Impeller type rotor engine
CN110195645B (en) * 2019-03-12 2021-10-12 江苏大学 Multi-cylinder rotor engine

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Publication number Publication date
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