EP0964136A1 - Moteur rotatif à combustion interne - Google Patents

Moteur rotatif à combustion interne Download PDF

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Publication number
EP0964136A1
EP0964136A1 EP98304564A EP98304564A EP0964136A1 EP 0964136 A1 EP0964136 A1 EP 0964136A1 EP 98304564 A EP98304564 A EP 98304564A EP 98304564 A EP98304564 A EP 98304564A EP 0964136 A1 EP0964136 A1 EP 0964136A1
Authority
EP
European Patent Office
Prior art keywords
block
cylindrical
cylindrical block
engine
stroke
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Withdrawn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
EP98304564A
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German (de)
English (en)
Inventor
Shih-Pin Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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 EP98304564A priority Critical patent/EP0964136A1/fr
Publication of EP0964136A1 publication Critical patent/EP0964136A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F02B57/00—Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons
    • F02B57/08—Engines with star-shaped cylinder arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B13/00—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion
    • F01B13/04—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder
    • F01B13/045—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four

Definitions

  • the present invention relates to a rotary internal combustion engine, and more particularly to a rotary internal combustion engine that can be fabricated in a small size and/or light weight for saving fuel without compromising the structural strength.
  • Wankel engine has the claimed advantages that it occupies less space and offers a reduction in weight relative to its power output, it compromises the combustion efficiency since the moving combustion space of this type of engine lacks compactness.
  • gas-turbine engine Another type of rotary engine is the gas-turbine engine, which has been successfully fitted in airplanes, helicopters, ships and electric generating systems. As to this type of engine, it operates mostly at a constant speed, so that it does not perform well in automotive vehicles. Another reason for this unsuitable performance is a noticeable delay in acceleration after the driver has depressed the throttle. Also, the power-turbine section, which gets very hot and runs at a very high speed, is made of expensive materials. This makes the gas-turbine engine fabrication cost much more than a comparable piston engine, and as a result there is no gas-turbine commercially available for cars.
  • the applicant has invented a rotary internal combustion engine, which has the advantage of space and/or weight reduction without compromising the combustion efficiency as exists in the Wankel engine.
  • the primary object of the present invention is to provide a rotary internal combustion engine, which comprises an engine block and a cylindrical block.
  • the engine block defines a cylindrical inner space in which a toothed ring portion is integrally attached with the engine block.
  • the engine block is connected with an output axle.
  • the engine block is installed with a plurality of spark plugs and defines a plurality of exhaust ports and a plurality of intake ports communicating with the cylindrical inner space.
  • the cylindrical block is rotatably and snugly fitted in the cylindrical inner space of the engine block.
  • the cylindrical block defines a plurality of cylinder bores therein along a circumferential portion thereof to each receive a piston therein. Each cylinder bore is accessible to the spark plug, the exhaust ports, and the intake ports upon rotation of the cylindrical block.
  • the piston is pivotally attached with a connecting rod which is pivotally connected with a crank which is coaxially and pivotally connected with a pinion which in turn meshes with the toothed ring portion of the engine block.
  • each piston is allowed to conduct reciprocal movement action including a power stroke movement, an exhaust movement, an intake movement, and a compression stroke movement, along the respective cylinder, which in turn drives the crank to rotate integrally with the pinion through the connecting rod, which in turn drives the cylindrical block to rotate integrally with the output shaft connected thereto.
  • the rotation of the pinion may cause the cylindrical block together with the output axle to rotate with respect to the engine block to supply a rotational mechanical power output drive.
  • Another object of the present invention is to provide a rotary internal combustion engine, which comprises an engine block, a cylindrical block, a plurality of pistons, and a plurality of pinions.
  • the engine block defines a cylindrical inner space in which a central toothed ring portion is integrally attached with the engine block, a plurality of exhaust ports, and a plurality of intake ports.
  • the plurality of threaded holes are evenly distributed along a periphery of the engine block and communicate with the cylindrical space to respectively receive a spark plug therein.
  • the plurality of intake ports are evenly distributed along the periphery of the engine block respectively corresponding to the plurality of spark plugs.
  • the plurality of intake ports are evenly distributed along the periphery of the engine block respectively corresponding to the plurality of the spark plugs.
  • Each exhaust port is arranged at a position following one of the spark plugs whilst each intake port is arranged at a position following one of the exhaust ports and thus is adjacent to a subsequent spark plug.
  • the cylindrical block is rotatably and snugly fitted in the cylindrical inner space of the engine block.
  • the cylindrical block has a circumferential portion and a central hub portion connected with an output axle and thus defines a ring-shaped recess between the central hub portion and the circumferential portion.
  • the circumferential portion of the cylindrical block defines a plurality of chambers evenly distributed therealong.
  • Each chamber includes a crank-receiving space portion and a cylinder bore portion communicating with the crank-receiving space portion.
  • the plurality of pistons which are each pivotally attached with a respective connecting rod, are respectively installed in the cylinder bore portions of the chambers.
  • Each connecting rod is pivotally connected with a crank via a crankpin mounted in the respective crank-receiving space portion above a bottom portion of the cylindrical block which defines the ring-shaped recess and each crank-receiving space portion.
  • the plurality of pinions are each coaxially and fixedly mounted with the respective crank via a stub. The pinions are each located below the bottom portion of the cylindrical block to mesh with the central toothed ring portion attached with the engine block.
  • each piston is allowed to conduct reciprocal movement action including a power stroke movement, an exhaust stroke movement, an intake stroke movement, and a compression stroke movement, which in turn drives the respective crank to rotate integrally with the respective pinion through the respective connecting rod, which in turn drives the cylindrical block to rotate integrally with the output axle.
  • reciprocal movement action including a power stroke movement, an exhaust stroke movement, an intake stroke movement, and a compression stroke movement
  • the respective crank drives the respective crank to rotate integrally with the respective pinion through the respective connecting rod, which in turn drives the cylindrical block to rotate integrally with the output axle.
  • a rotary internal combustion engine in accordance with the present invention comprises an engine block 20, a cylindrical block 40, a plurality of pistons 60 (the figure showing 4 pistons), and a plurality of pinions 80 (see FIGS. 6 and 8).
  • the engine block 20 defines a cylindrical inner space 22 (see FIG. 6), a plurality of threaded holes 24, exhaust ports 26, and intake ports 28.
  • the quantity of the spark plugs 30, the quantity of the intake ports 28, and the quantity of the exhaust ports 26 are the same, the quantity of either of which is half of the quantity of the pistons 60.
  • the engine block 20 is integrally attached with a central toothed ring portion 20a in the cylinder space 22 of the engine block 20.
  • the plurality of threaded holes 24, each of which communicates with the cylindrical inner space 22, are distributed along a periphery of the engine block 20 to respectively receive a spark plug 30 therein.
  • the plurality of exhaust ports 26, respectively corresponding to the plurality of spark plugs 30, are evenly distributed along the periphery of the engine block 20.
  • the plurality of intake ports 28, respectively corresponding to the spark plugs 30, are also evenly distributed along the periphery of the engine block 20. As can be seen in FIG.
  • each exhaust port 26 is arranged at a position following one of the plurality of spark plugs 30 whilst each intake port 28 is arranged at a position following one of the plurality of exhaust ports 26 and thus is adjacent to a subsequent spark plug 30.
  • the angular distance between a spark plug 30 and a following exhaust port 26 is substantially twice of the angular distance between the said following exhaust 26 and a following intake port 28, and substantially equals the angular distance between the said following intake port 28 and a subsequent spark plug 30 following the said following intake port 28 (see FIG. 11).
  • the cylindrical block 40 which is rotatably and snugly fitted in the cylindrical inner space 22 of the engine block 20, has a circumferential portion 42 and a central hub portion 44 connected with an output axle 100 and thus defines a ring-shaped recess 46 between the central hub portion 44 and the circumferential portion 42 of the cylindrical block 40.
  • the circumferential portion 42 of the cylindrical block 40 defines a plurality of chambers 48 evenly distributed therealong, each chamber 48 including a crank-receiving space portion 48a and a cylinder bore portion 48b communicating with the crank-receiving space portion 48a (see FIG. 1).
  • the plurality of pistons 60 are respectively installed in the cylinder bore portions 48b of the chambers 48, wherein each connecting rod 50 is pivotally connected with a crank 52 via a crankpin 54 mounted in a respective crank-receiving space portion 48a above a bottom portion 40a of the cylindrical block 40, which defines the ring-shaped recess 46 and each crank-receiving space portion 48a (see FIGS 1 and 6).
  • the plurality of pinions 80 are each coaxially and fixedly mounted with a crank 52 by a pin 56.
  • the pinions 80 are each below the bottom portion 40a of the cylindrical block to mesh with the central toothed ring portion 20a attached integrally with the engine block 20.
  • the pistons 60 installed in the cylindrical block 40 are each allowed to conduct a four-stroke-cycle action, namely, a power stroke, an exhaust stroke, a intake stroke, and a compression stroke.
  • the stroke actions of the pistons 60 are coordinated with each other in a manner that each piston 60 is allowed to alternatively deliver part of the rotational mechanical power to the output axle 100. More specifically, once the rotary combustion engine is started, when the cylindrical block 40 arrives at a first position (see FIG. 1), each cylinder bore portion 48b of two of the chambers 48 (being positioned opposite to each other as shown in the figure) and an associated piston 60 installed therein may access one of the spark plugs 30 to be ready for a power stroke. Referring to FIG.
  • each piston 60 is allowed to conduct reciprocal movement along a respective cylinder bore portion 48b, which in turn drives a respective crank 52 to rotate integrally with a respective pinion 80 through a respective connecting rod 50, which in turn drives the cylindrical block 20 to rotate integrally with the output shaft 100 with respect to the engine block 20 being kept stationary, whereby the rotation of the pinions 80 causes the cylindrical block 40 together with the output axle 100 (see FIGS 1-6) to rotate with respect to the engine block 20 to supply a rotational mechanical power.
  • FIG. 9 there are six pistons 60 respectively installed in the cylinder bore portions 48b defined in a cylindrical block 40' with six chambers 48; as shown in FIG. 10, there are eight pistons 60 respectively installed in the cylinder bore portions 48b defined in a cylindrical block 40'' with eight chambers 48.
  • the rotating speed of the cylindrical block 40 can be controlled from a selection of the gear ratio of the toothed ring portion 20a and of the pinions 80, so that the rotary internal combustion engine does not need an additional speed-reducing device to provide a suitable rotation speed to a transmission input shaft of a vehicle or an electrical generator.
  • the gear ratio may be selected in combination with a selection of the quantity of pistons 60, the dimension of the cylindrical block 40, and the spacing and locating of the exhaust ports 26, the intake ports 28, and the spark plugs 30, so that a rotational mechanical power of a desired rotational mechanical power from the output axle 100 can be obtained.
  • the present invention has the following advantages:
EP98304564A 1998-06-09 1998-06-09 Moteur rotatif à combustion interne Withdrawn EP0964136A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98304564A EP0964136A1 (fr) 1998-06-09 1998-06-09 Moteur rotatif à combustion interne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98304564A EP0964136A1 (fr) 1998-06-09 1998-06-09 Moteur rotatif à combustion interne

Publications (1)

Publication Number Publication Date
EP0964136A1 true EP0964136A1 (fr) 1999-12-15

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EP98304564A Withdrawn EP0964136A1 (fr) 1998-06-09 1998-06-09 Moteur rotatif à combustion interne

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042624A2 (fr) 1999-12-07 2001-06-14 Harcourt Engine Pty Limited Moteur
EP1128035A1 (fr) * 2000-02-28 2001-08-29 Shih-Pin Huang Moteur à combustion interne
WO2004072441A1 (fr) * 2003-02-04 2004-08-26 Norman Leslie Matthews Moteur a bloc-cylindres rotatif et pistons alternatifs
US9441538B2 (en) 2010-09-30 2016-09-13 Grace Motor Works Limited Engine usable as a power source or pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE328959C (de) * 1920-11-04 Josef Schwarz Verbrennungskraftmaschine mit umlaufenden Zylindern
US2990820A (en) * 1958-05-01 1961-07-04 Saijo Genzo Rotating mechanism of main shaft of oil engine
US5123394A (en) * 1990-05-23 1992-06-23 Warren Ogren Rotary reciprocating internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE328959C (de) * 1920-11-04 Josef Schwarz Verbrennungskraftmaschine mit umlaufenden Zylindern
US2990820A (en) * 1958-05-01 1961-07-04 Saijo Genzo Rotating mechanism of main shaft of oil engine
US5123394A (en) * 1990-05-23 1992-06-23 Warren Ogren Rotary reciprocating internal combustion engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042624A2 (fr) 1999-12-07 2001-06-14 Harcourt Engine Pty Limited Moteur
US6705202B2 (en) 1999-12-07 2004-03-16 Harcourt Engine Pty Limited Rotary engine
US6988441B2 (en) 1999-12-07 2006-01-24 Harcourt Engine Pty Limited Rotary engine
EP1128035A1 (fr) * 2000-02-28 2001-08-29 Shih-Pin Huang Moteur à combustion interne
WO2004072441A1 (fr) * 2003-02-04 2004-08-26 Norman Leslie Matthews Moteur a bloc-cylindres rotatif et pistons alternatifs
US9441538B2 (en) 2010-09-30 2016-09-13 Grace Motor Works Limited Engine usable as a power source or pump

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