WO2004007911A1 - Convertisseur de mouvement lineaire en mouvement rotatif pour moteur multi-cylindres - Google Patents

Convertisseur de mouvement lineaire en mouvement rotatif pour moteur multi-cylindres Download PDF

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Publication number
WO2004007911A1
WO2004007911A1 PCT/AU2003/000896 AU0300896W WO2004007911A1 WO 2004007911 A1 WO2004007911 A1 WO 2004007911A1 AU 0300896 W AU0300896 W AU 0300896W WO 2004007911 A1 WO2004007911 A1 WO 2004007911A1
Authority
WO
WIPO (PCT)
Prior art keywords
converter
pistons
shaft
piston
common drive
Prior art date
Application number
PCT/AU2003/000896
Other languages
English (en)
Inventor
Alan Patrick Casey
Malcolm J. Beare
Original Assignee
Alan Patrick Casey
Beare Malcolm J
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 Alan Patrick Casey, Beare Malcolm J filed Critical Alan Patrick Casey
Priority to AU2003236607A priority Critical patent/AU2003236607A1/en
Publication of WO2004007911A1 publication Critical patent/WO2004007911A1/fr

Links

Classifications

    • 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
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • 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
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes

Definitions

  • the present invention relates to linear to rotary motion converters as may be adapted to function such as an engine or a pump.
  • the following disclosure will be provided with reference to internal combustion engines and more particularly to engines of the type disclosed in WO 96/12096, FR 2633010, US 1590940 and US 2435361, by way of example, and the contents of which are included herein by reference together with the contents of Australian Provisional Patent Application No. PM 8910 of 18 April, 1994. It will be appreciated, however, that the present invention in its broadest aspect is not limited to the environment of internal combustion engines.
  • Those aforementioned prior art disclosures show engines having a single cylinder or a pair of different diameter cylinders which contain respective pistons that move toward and away from each other during cycles of operation of the engine.
  • the pair of pistons define opposite ends of a common combustion chamber.
  • the present invention proposes a method and means for achieving a multi-combustion-chambered engine of an arrangement comprising a multiplicity of units, wherein each unit comprises a combustion chamber having a pair of opposed pistons defining opposite ends of that combustion chamber.
  • first and second piston have the same meaning as in WO
  • the present invention provides a multi-working chambered linear to rotary motion converter wherein each chamber is defined by an opposed piston pair comprising a first piston and a second piston, said converter functioning by means of a predetermined relationship between the motion of the first and second pistons of each opposed pair wherein the relationship is controlled by a drive coupling from a rotary shaft controlled by the first pistons to a common drive for the second pistons, the common drive being in the form of a shaft having an axis of rotation parallel to the axis of rotation of the rotary shaft.
  • a multi-combustion- chambered engine of the kind contemplated achieves a predetermined relationship between the motion of the second pistons relative to the first pistons of each pairing by means of a drive coupling from a power output shaft, in the form of a crankshaft, of the first pistons to a common drive for the second pistons, the common drive being in the form of a shaft having an axis of rotation parallel to the axis of rotation of the power output shaft of the first pistons.
  • the common drive shaft for the second pistons is below a plane defining the top of a bank of cylinders of the multi-working chambered linear to rotary motion converter.
  • the common drive shaft is external to the converter, as such.
  • the common drive shaft is fitted with bevel gears which are mated with complementary bevel gears associated with each respective second piston so as to provide means for effecting a 90° change of rotational direction from that of the common drive shaft, h one example of the last mentioned preferred form, the bevel gears are square cut.
  • bevel gears are helically cut so as to substantially reduce the noise emanating from the meshing of those gears.
  • the common drive is coupled to respective first pistons by any one of a belt or a chain or a shaft drive or a gear train or suitable combination of such drives.
  • that common drive shaft is a hollow drive shaft.
  • a belt or drive chain interconnects the output of the first pistons to the common drive for the second pistons.
  • the pulley ratio between the drive shaft for the first pistons and the common drive for the second pistons is appropriately 2:1.
  • embodiments with bevel gears on the common drive shaft for the second pistons have those bevel gears axially movable along splines on that drive shaft so as to compensate for expansion and contraction as relevant components of the engine expand and contract with changes in temperature.
  • an exhaust rotary valve is employed that it is fixed on its axis of rotation and not free to move along that axis during engine operation.
  • Figure 1 is identical to Figure 5 of Australian Patent Application No. PM 8910;
  • Figure 2 is identical to Figure 6 of WO 96/12096;
  • Figure 3 is an isometric view of a preferred embodiment of a multi-combustion- chambered engine in accordance with the present invention as viewed from the front at the upper left-hand side;
  • Figure 4 is a plan view of the engine of Figure 3;
  • Figure 5 is an isometric upper left-hand rear view of the engine of Figure 3.
  • Figure 6 is a rear elevation view of the engine of Figure 3.
  • Figures 1 and 2 show embodiments of prior art single combustion chamber dual- piston engines of the type generally relevant to the present invention which are described in the specifications of Australian Provisional Application No. PM 8910 and WO 96/12096, respectively.
  • the reference numerals in Figure 2 correspond with those same numerals on Figure 6 of WO 96/12096.
  • the embodiment of the present invention of Figures 3 - 6 shows an engine 30 having a V-4 layout.
  • Each combustion chamber having paired pistons as shown generally by Figure 2 but with the scotch yoke mechanism and its slide 51 atop piston 7 being rotated through 90° so as to be driven by respective bevel gear drives 31 mounted on the same side as inlet ports or apertures 14.
  • bevel gear drives 31 for the respective second piston scotch yoke mechanisms also drives the rotary valve 17 which seals off exhaust aperture 15 from exhaust port 16 in a suitably timed relationship with movement of the respective first pistons. Closure of port 16 by rotary valve 17 prevents the back flow of exhaust gases into combustion chamber 12 during each induction stroke as typified by the views shown in Figures 1 and 2.
  • the rear timing belt 32 fitted between the common bevel gear drive shafts 33 for each bank of cylinders 34 functions to dampen the reverse power feed from each firing combustion chamber to spread that load evenly over the bevel gear drives for the combustion chambers which are not then firing. Without that rear timing belt it is possible that the reverse power feed could cause some back slap in a "V" configuration multi- combustion chambered engine where tolerances are not fine enough between engine components.
  • the rear timing belt 32 is shown for the purpose of dampening that back slap and to balance the forces on the respective shafts 33.

Landscapes

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

Abstract

Cette invention concerne un convertisseur multi-chambres permettant de transformer un mouvement linéaire en un mouvements rotatif, dans lequel chaque chambre est définie par des premier et second pistons opposés et les chambres multiples forment au moins une rangée. Les premiers pistons sont chacun raccordés via un premier arbre commun et les seconds pistons sont chacun raccordés via un second arbre commun. On trouve un coupleur d'entraînement entre les premier et second arbres, le mouvement de chaque paire de pistons étant régi par une relation prédéterminée.
PCT/AU2003/000896 2002-07-10 2003-07-10 Convertisseur de mouvement lineaire en mouvement rotatif pour moteur multi-cylindres WO2004007911A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003236607A AU2003236607A1 (en) 2002-07-10 2003-07-10 Multi-cylinder engine linear to rotary motion converter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2002950119 2002-07-10
AU2002950119A AU2002950119A0 (en) 2002-07-10 2002-07-10 Multi-cylinder engine

Publications (1)

Publication Number Publication Date
WO2004007911A1 true WO2004007911A1 (fr) 2004-01-22

Family

ID=27809221

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/000896 WO2004007911A1 (fr) 2002-07-10 2003-07-10 Convertisseur de mouvement lineaire en mouvement rotatif pour moteur multi-cylindres

Country Status (2)

Country Link
AU (1) AU2002950119A0 (fr)
WO (1) WO2004007911A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012051645A1 (fr) 2010-10-19 2012-04-26 Jbec Pty Limited Procédé et moyen pour commander une combustion
CN110454274A (zh) * 2019-08-20 2019-11-15 湖南大兹动力科技有限公司 一种具有多种点火模式的内燃机及其控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1590940A (en) * 1922-04-18 1926-06-29 Fred N Hallett Gas engine
US5188066A (en) * 1989-06-20 1993-02-23 Skarblacka Bil & Motor Ab Internal combustion engine
WO1996012096A1 (fr) * 1994-10-18 1996-04-25 Beare Malcolm J Moteur a combustion interne a deux pistons
JPH09256866A (ja) * 1996-03-22 1997-09-30 Masuharu Onomi 対面ピストンディーゼル内燃機関
GB2359336A (en) * 2000-02-18 2001-08-22 Shaun Michael Gagg Two pistons per cylinder internal combustion engine
DE10026458A1 (de) * 2000-05-27 2001-12-13 Hermann Golle Schadstoffarmer Gegenkolben-Zweitaktmotor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1590940A (en) * 1922-04-18 1926-06-29 Fred N Hallett Gas engine
US5188066A (en) * 1989-06-20 1993-02-23 Skarblacka Bil & Motor Ab Internal combustion engine
WO1996012096A1 (fr) * 1994-10-18 1996-04-25 Beare Malcolm J Moteur a combustion interne a deux pistons
JPH09256866A (ja) * 1996-03-22 1997-09-30 Masuharu Onomi 対面ピストンディーゼル内燃機関
GB2359336A (en) * 2000-02-18 2001-08-22 Shaun Michael Gagg Two pistons per cylinder internal combustion engine
DE10026458A1 (de) * 2000-05-27 2001-12-13 Hermann Golle Schadstoffarmer Gegenkolben-Zweitaktmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class Q52, AN 1997-533851/49 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012051645A1 (fr) 2010-10-19 2012-04-26 Jbec Pty Limited Procédé et moyen pour commander une combustion
CN110454274A (zh) * 2019-08-20 2019-11-15 湖南大兹动力科技有限公司 一种具有多种点火模式的内燃机及其控制方法

Also Published As

Publication number Publication date
AU2002950119A0 (en) 2002-09-12

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