WO2003002893A1 - Ensembles plaque oscillante - Google Patents

Ensembles plaque oscillante Download PDF

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Publication number
WO2003002893A1
WO2003002893A1 PCT/AU2002/000831 AU0200831W WO03002893A1 WO 2003002893 A1 WO2003002893 A1 WO 2003002893A1 AU 0200831 W AU0200831 W AU 0200831W WO 03002893 A1 WO03002893 A1 WO 03002893A1
Authority
WO
WIPO (PCT)
Prior art keywords
swash plate
piston
plate device
linkage
dead centre
Prior art date
Application number
PCT/AU2002/000831
Other languages
English (en)
Inventor
Stuard Daevys
Original Assignee
Stuard Daevys
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 Stuard Daevys filed Critical Stuard Daevys
Publication of WO2003002893A1 publication Critical patent/WO2003002893A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1054—Actuating elements
    • 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
    • F02B75/26—Engines with cylinder axes coaxial with, or parallel or inclined to, main-shaft axis; Engines with cylinder axes arranged substantially tangentially to a circle centred on main-shaft axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H23/00—Wobble-plate gearings; Oblique-crank gearings
    • F16H23/04—Wobble-plate gearings; Oblique-crank gearings with non-rotary wobble-members
    • F16H23/06—Wobble-plate gearings; Oblique-crank gearings with non-rotary wobble-members with sliding members hinged to reciprocating members

Definitions

  • the present invention relates to swash plate devices and to mechanisms incorporating such devices.
  • Examples of application of the present inventive concept is to the field of engines, motors and pumps, where the swash plate device is converting between rotary motion and linear motion.
  • the present invention in a first aspect, provides :
  • a swash plate device having (a) a body portion;
  • the cross-bore accommodating a sliding sleeve in which the linkage engages for sliding motion of the sleeve along the cross-bore as the linkage and piston move (relative to the shaft) , and wherein the sleeve is rotatable in the cross-bore around its axis whereby a dwell of the piston around its top dead centre position is provided.
  • the swash plate device will usually be provided in combination with a suitable drive shaft whereby rotary motion of the drive shaft can be translated to reciprocating motion of the piston or vice versa.
  • Preferred and important embodiments of the invention provide for the linkage to be connected to the sleeve through a pin which extends transversely to the cross-bore whereby limited pivoting action around the axis of the pin is provided and as the piston moves towards and past its top dead centre position there is oscillatory motion of the linkage around its elongate axis and oscillatory motion of the piston around its axis together with the rotation of the sleeve in the cross-bore around the axis of the sleeve.
  • the motion of the piston may be described as a spherical lamniscate motion.
  • a second and distinct inventive aspect is the provision of a swash plate surface extending at 22.5 degrees to the plain normal to the axis of the piston ie a plane at 67.5 degrees to the piston axis and, usually, the axis of the swash plate element.
  • this aspect of the invention provides: A swash plate device having
  • Preferably devices utilise both aspects of the invention and furthermore at least preferred embodiments provide for a spherical lamniscate motion of the piston approaching and departing from its top dead centre and bottom dead centre positions.
  • Preferred embodiments of the invention can include a double-acting piston unit having a crown at each end and the cross-bore is central radially directed cylindrical cavity.
  • cylinder heads When the invention is applied to an engine, cylinder heads are provided with appropriate valves and are secured to the cylinder ends.
  • the invention lends itself to advantageous embodiments for providing a relatively high power output in a compact form by having a plurality of linkages extending radially from around the shaft to respective pistons.
  • a six cylinder engine can be provided as is exemplified in the accompanying drawings with three pairs of double-acting pistons.
  • a major performance benefit which can be offered by embodiments of the present invention is providing an extended dwell at the top and bottom dead centre positions of the pistons by the combination of the rotational motion of the linkage to the sleeve in combination with the radially sliding motion.
  • the linkage is connected with a suitable rotational pin with an axis which extends transverse to the linkage, the axis being substantially at right angles to the axis of the piston.
  • At least preferred embodiments can be described as providing a spherical lamniscate motion and it is believed that this eliminates a tangential component of motion in known swash plate devices. This leads to the capacity of embodiments of the invention to be particularly efficient especially with internal combustion engines.
  • the degree of dwell designed in the mechanism for the pistons can be varied to suit the application but a typical internal combustion engine according to an embodiment of the present invention will have dwell in the range of about 10 degrees to 15 degrees and preferably 12 degrees .
  • Embodiments of the invention can provide excellent performance characteristics because of the extended dwell period, with the piston movements and acceleration is conforming to a pure side function.
  • Figure 1 is a schematic exploded view of part of a six cylinder internal combustion engine embodying the invention
  • Figure 2 is an exploded view of components of the device of figure 1 in essentially side view
  • Figure 3 is of the components of figure 2 viewed in perspective exploded form
  • Figure 4 is an axial cross-section through the assembled components of Figure 1; and Figure 5 is an axial section perspective view from below of the components of Figure 1.
  • the central unit in Figure 4 comprises a rotatably mounted swash plate unit 10 which is fixed to a drive shaft (not shown) .
  • a spider 11 is rotatably mounted on a neck portion 12 of the swash plate which, in the view shown in Figure 4, shows the obliquely angled (at 22.5 degrees) swash upper lower surfaces 13 and 14 with lubrication ducts 15 shown schematically.
  • the spider 11 has a linkage in the form of a connecting rod 16 which extends generally radially outwardly and is located within a sliding cylindrical sleeve 17 which is slidingly and rotatably mounted in a piston cross-bore 28.
  • the sleeve is pivotally connected to the centre of the sleeve by transverse gudgeon pin 18.
  • the sleeve 17 has a wall thickness which decreases towards each end symmetrically so as to accommodate the variation in angular position between the connecting rod 16 and the whole piston unit 19 in which the sleeve 17 is mounted.
  • the piston unit 19 comprises an upper piston 20 and a lower piston 21 adapted to carry conventional piston rings (not shown in the drawings for clarity) .
  • the sleeve 17 slides radially during the reciprocating motion of the piston as the reciprocating action of the piston is translated through the swash plate to a rotary drive to the drive shaft.
  • the swash plate causes oscillatory motion or the connecting rod about its axis and of the sleeve 17 in the cross-bore together with oscillatory motion of the piston around its axis, whereby a dwell is established for the piston extending prior to and after the dead centre positions.
  • a 22.5 degree angle of the swash surfaces (to the normal direction from the swash plate unit axis) is exceptionally beneficial and is a distinct inventive development.
  • FIG. 1 illustrates the schematic construction of an engine having a cylinder block 22 comprising a centre block 23, upper and lower supplementary block elements 24 and 25 and upper and lower end block elements 26 and 27 all adapted to be bolted or screwed together with appropriate gaskets to form a sealed unit.
  • Bearings are provided for the swash plate unit but not shown in the drawings for clarity. These bearing accommodate radial and axial thrust .
  • Figure 1 there is shown a three armed configuration of the spider 11 with, for illustrative purposes, one of the cylindrical sleeves shown prior to being inserted in a sliding fit in the cylindrical cross bore 28 in the centre of the piston 19B.
  • Figure 1 also shows a multiplicity of through-bores 29 for cylinder bolts and a central aperture 30 an assembly bolt.
  • the centre block element 23 also includes a multiplicity of supplementary bores 31 for oil circulation.
  • the components and especially the swash plate unit 10 are shown more clearly in Figures 2 and 3.
  • the swash plate unit 10 is assembled from two major components which are shown in Figure 2 and comprise a base unit 10A and a top unit 10B.
  • the base unit has a base flange 32 extending below a body 33 for connection to a drive shaft with a central shaft portion 34 on which a bearing 35 is mounted for fitting within a cylindrical central bore 36 of the spider.
  • the top unit has a central circular aperture 36 for receiving the end of shaft 34 and the respective units have upper and lower thrust bearings 37 and 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Transmission Devices (AREA)

Abstract

Ensemble plaque oscillante conçu pour être mis en application dans un moteur à combustion interne ou d'autres domaines, et possédant un arbre moteur rotatif, un mécanisme (10) de plaque oscillante et un mécanisme (16) de bras radial conçu pour s'accoupler au mécanisme (10) de plaque oscillante, ainsi qu'à des pistons (19) effectuant un déplacement à l'intérieur de cylindres s'étendant dans un sens parallèle à l'axe de l'arbre moteur. Ces pistons (19) logent un connecteur cylindrique coulissant (17) accouplé au bras (16) et coulissant dans un sens transversal à celui du piston (19) pendant le mouvement de ce dernier. Le profil du mécanisme de plaque oscillante déclenche la rotation du connecteur (17) avant et après les positions de point mort du piston (19), ce qui permet de définir une période lattante. Dans un autre mode de réalisation, l'élément (10) de plaque oscillante constitue une surface située dans un plan s'étendant à 67,6° par rapport à l'axe du piston (19).
PCT/AU2002/000831 2001-06-27 2002-06-27 Ensembles plaque oscillante WO2003002893A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR5923 2001-06-27
AUPR5923A AUPR592301A0 (en) 2001-06-27 2001-06-27 A cross head mechanism for swash plate engines, motors and pumps

Publications (1)

Publication Number Publication Date
WO2003002893A1 true WO2003002893A1 (fr) 2003-01-09

Family

ID=3829891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2002/000831 WO2003002893A1 (fr) 2001-06-27 2002-06-27 Ensembles plaque oscillante

Country Status (3)

Country Link
CN (1) CN1650122A (fr)
AU (1) AUPR592301A0 (fr)
WO (1) WO2003002893A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2478794C2 (ru) * 2011-04-01 2013-04-10 Владимир Николаевич Сапаров Двигатель двухвальный поршневой с двухсторонними рабочими ходами
RU2703045C1 (ru) * 2018-05-21 2019-10-15 Фарит Фаварисович Ахияров Механизм с косой шайбой аксиального двигателя

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1233635A (en) * 1916-08-15 1917-07-17 Almen Crosby Motors Co Inc Internal-combustion engine.
US2258127A (en) * 1940-01-30 1941-10-07 John O Almen Engine mechanism
US2282722A (en) * 1940-01-30 1942-05-12 Edwin S Hall Crosshead mechanism
US2648228A (en) * 1947-01-18 1953-08-11 Samuel B Eckert Internal-combustion engine
US2812664A (en) * 1953-01-22 1957-11-12 Samuel B Eckert Wabbler type internal combustion engine
US4077269A (en) * 1976-02-26 1978-03-07 Lang Research Corporation Variable displacement and/or variable compression ratio piston engine
EP0035867A2 (fr) * 1980-03-11 1981-09-16 Joseph Scalzo Transmission à plateaux oscillants
US4688439A (en) * 1984-04-17 1987-08-25 S. V. Engine Co. Pty. Ltd. Wabble plate engine mechansim
US5027756A (en) * 1990-02-23 1991-07-02 Consulier Industries, Inc. Nutating spider crank reciprocating piston machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1233635A (en) * 1916-08-15 1917-07-17 Almen Crosby Motors Co Inc Internal-combustion engine.
US2258127A (en) * 1940-01-30 1941-10-07 John O Almen Engine mechanism
US2282722A (en) * 1940-01-30 1942-05-12 Edwin S Hall Crosshead mechanism
US2648228A (en) * 1947-01-18 1953-08-11 Samuel B Eckert Internal-combustion engine
US2812664A (en) * 1953-01-22 1957-11-12 Samuel B Eckert Wabbler type internal combustion engine
US4077269A (en) * 1976-02-26 1978-03-07 Lang Research Corporation Variable displacement and/or variable compression ratio piston engine
EP0035867A2 (fr) * 1980-03-11 1981-09-16 Joseph Scalzo Transmission à plateaux oscillants
US4688439A (en) * 1984-04-17 1987-08-25 S. V. Engine Co. Pty. Ltd. Wabble plate engine mechansim
US5027756A (en) * 1990-02-23 1991-07-02 Consulier Industries, Inc. Nutating spider crank reciprocating piston machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2478794C2 (ru) * 2011-04-01 2013-04-10 Владимир Николаевич Сапаров Двигатель двухвальный поршневой с двухсторонними рабочими ходами
RU2703045C1 (ru) * 2018-05-21 2019-10-15 Фарит Фаварисович Ахияров Механизм с косой шайбой аксиального двигателя

Also Published As

Publication number Publication date
AUPR592301A0 (en) 2001-07-19
CN1650122A (zh) 2005-08-03

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