WO2004065762A1 - Moteur - Google Patents

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Publication number
WO2004065762A1
WO2004065762A1 PCT/IT2003/000015 IT0300015W WO2004065762A1 WO 2004065762 A1 WO2004065762 A1 WO 2004065762A1 IT 0300015 W IT0300015 W IT 0300015W WO 2004065762 A1 WO2004065762 A1 WO 2004065762A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion chamber
engine
slider
admission
exhaust gases
Prior art date
Application number
PCT/IT2003/000015
Other languages
English (en)
Inventor
Giletto Sebastiano
Original Assignee
Giletto Sebastiano
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 Giletto Sebastiano filed Critical Giletto Sebastiano
Priority to PCT/IT2003/000015 priority Critical patent/WO2004065762A1/fr
Priority to AU2003207994A priority patent/AU2003207994A1/en
Publication of WO2004065762A1 publication Critical patent/WO2004065762A1/fr

Links

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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/18—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C9/00—Oscillating-piston machines or engines
    • F01C9/002—Oscillating-piston machines or engines the piston oscillating around a fixed 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
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines

Definitions

  • the present invention relates to an engine, and more particularly to an endothermic engine to be applied either to moving vehicles or to fixed apparatus • or machinery.
  • a reciprocating engine of the traditional type is substantially based on a varying number of cylinders, inside which the related pistons reciprocate.
  • the cylinders are fed with an appropriate air-fuel mixture and the exhaust gas is released therefrom through specific valves, opening and closure of which is controlled by means of many typologies of timing systems .
  • the technical task underlying the present ⁇ invention is to devise an engine capable of substantially obviating the mentioned limits.
  • the present invention aims at conceiving an engine capable of being adapted to operate with different thermodynamic cycles and different types of fuel, while keeping the above mentioned advantageous features of compactness and high efficiency.
  • the present invention aims at manufacturing an engine that can be made up of any number of modules so that it can produce even very high power levels while keeping lower sizes- and higher efficiencies than traditional engines having the same power and/or piston displacement.
  • Another important aim of the invention is to devise an engine capable of being produced industrially with low costs and being of easy maintenance.
  • Figs 1 to ⁇ show sectional views of an engine in accordance with the present invention in different strokes of the operating cycle of same.
  • It substantially consists of a thermal unit having at least one slider element 2 movably engaged in a first combustion chamber 3a.
  • the slider element 2 moves along a predetermined stroke in its combustion chamber 3a, following modalities better detailed in the following.
  • thermodynamic cycle that, depending on requirements, can be an otto cycle, a diesel cycle and so on
  • admission means 4 operatively associated with the first combustion chamber 3a to introduce a given mixture amount thereinto
  • exhaust means 5 also associated with the first combustion chamber 3a to enable release of a predetermined amount of exhaust gases.
  • the admission means 4 is rigidly fixed to slider 2 and selectively creates at least one operating condition for loading the first combustion, chamber 3a at predetermined points of the stroke of slider 2.
  • the present invention differs from endothermic engines of known type: in fact, in the latter the admission means is substantially separated from the corresponding "sliders" of known type (be they traditional cylinders of two-cycle or four-cycle reciprocating engines or rotors of "wankel” engines) , whereas in accordance with the invention a substantial integration of the means adjusting admission of the air-fuel mixture into ' the combustion chambers is created.
  • admission means 4 with slider 2 enables a great number of traditional components to be eliminated from the engine structure, among which camshafts, all kinematic chains for movement and synchronisation of the camshafts, tappets and so on.
  • slider 2 comprises an active portion 2a (that in the embodiment herein shown substantially is in the form of a small shovel or in other words a prismatic body of trapezoid shape) connected to a base portion 2b (still in the drawings this base portion 2b has a substantially annular shape) .
  • the active portion 2a is movable in the first combustion chamber 3a, whereas the base portion 2b is connected to the active portion and practically constitutes the support thereof. It should be also noted that while the active portion 2a is submitted to the expansion work of the air-fuel mixture during the combustion strokes, the base portion practically converts motion of the active portion 2a and serves as a kinematic transmission to set the drive shaft in rotation.
  • the admission means 4 is formed in the base portion 2b and can be shaped in any manner provided it allows the so-called "fresh charge" to enter the combustion chamber.
  • the admission means 4 comprises an admission duct 4a (which is adapted to convey a predetermined fluid mass and/or fuel mass and/or air-fuel mixture to the first combustion chamber 3a) and a first admission orifice 4b (formed in the base portion 2b) .
  • This first admission orifice 4b is adapted to be set, in a reversible manner, in a "first closed position, at which it inhibits fluid passage between the first combustion chamber 3a and the admission duct 4a, and in an open position at which on the contrary it enables passage of fluid between the first combustion chamber 3a and the admission duct 4a.
  • slider 2 is engaged in a movable manner following an oscillatory motion along a trajectory 2c (which, depending on requirements, may be a rectilinear trajectory or, as shown in the embodiment illustrated in the figures, a curvilinear trajectory substantially extending along an arc of a circumference or of any curved length) .
  • This trajectory 2c has a first and a second dead centres 2d, 2e that practically correspond to the points where reversal of the slider' s running direction occurs.
  • first admission orifice 4b can be set in the open position at least close to and preferably at the first dead centre 2b so that the inlet/admission strokes can be performed during the travel away from the second dead centre 2e.
  • any spatial geometry can be achieved in the shape of the combustion chamber 3a and, consequently, in the typology of the trajectory 2c to be travelled over by slider 2.
  • the base portion 2b is rotatably engaged around a rotation axis 2f transverse and preferably perpendicular to a lying plane containing the trajectory 2c.
  • Movement of slider 2 is conveniently converted to a continuous rotatory motion of a primary propeller shaft 6 which is connected to slider 2 through appropriate kinematic conversion means 7 (which means, in other words, is operatively associated between slider 2 and the primary propeller shaft 6 itself) .
  • the shaft will advantageously have a very reduced length and one throw alone, which is advantageous for the structural efficiency and reduction in friction losses.
  • the engine may further comprise a second combustion chamber 3b and advantageously slider 2 can be simultaneously active in the first and second combustion chambers (thus achieving a "double-acting" construction architecture) .
  • the simultaneous presence of two combustion chambers enables much more useful strokes of the slider travel to be present in the time unit: in fact, the engine in accordance with the invention, by exploiting both combustion chambers, can offer two useful strokes for each complete revolution of the drive shaft, whereas a traditional four-cycle single-cylinder engine does offer one useful stroke every two revolutions of the drive shaft.
  • the engine of the invention that practically can be assimilated to a single-cylinder engine (due to the presence of a single slider) , has four times as many useful strokes as a four-cycle single- cylinder engine (or twice the useful .strokes with respect to a two-cycle engine) of the traditional type.
  • the admission means 4 further comprises at least one second admission orifice 4c that -will be integral with slider 2 and in particular will be formed in the base portion 2b of slider 2.
  • This second admission orifice 4c as well is adapted to be set, in a reversible manner, in a closed position at which it inhibits passage of fluid between the second combustion chamber 3b and the admission duct 4a, and an open position at which it enables passage of fluid between the second combustion chamber 3b and the admission duct 4a.
  • the second admission orifice 4c can be set to the open position when slider 2 is close to and preferably at the second dead centre 2e, whereas the first admission orifice 4b will enable the fresh charge to enter the first combustion chamber 3a when slider 2 reaches the first dead centre 2d.
  • the active portion 2a is close to the dead centre 2e; a combustion occurs in the first chamber 3a, while the second chamber 3b is connected to the admission duct 4a through the second admission orifice 4c and is being filled;
  • the first admission orifice enables filling of the first chamber 3a with fresh charge (and possibly this fresh charge can be used to help in releasing the exhaust gases, in accordance with the "scavenge" principle) , whereas in the second chamber 3b a combustion foreshadowing another useful stroke occurs;
  • the engine in accordance with the present invention must be capable of releasing the exhaust gases: such a function is ensured by the exhaust means 5 that advantageously comprises an ejection member 5a active on the first and/or second combustion chambers 3a, 3b.
  • a single ejection member 5a is present that, depending on the moment, is employed to eject the exhaust gases coming in turn from the first chamber 3a or the second chamber 3b. It is to be emphasised once more the important difference existing between the present engine and the propulsion apparatuses of known type in which each separated combustion chamber must necessarily have exhaust valves and ducts exclusively dedicated thereto.
  • the ejection member 5a is adapted to be set, in a reversible manner, in a closed condition (at which it retains the fresh charge within the first and/or second combustion chambers) and an open condition (at which it enables release of the exhaust gases from the first and/or second combustion chambers) .
  • the operating/functional association between the -ejection member 5a and either chamber 3a or 3b is directly ensured by the movement of the active portion 2a along trajectory 2c: in fact, as can be viewed from the figures, slider 2 is movable along trajectory 2c so that it selectively brings the first or second combustion chambers, 3a or 3b, into fluid communication with the ejection member 5a.
  • the- ejection member ' 5a can be conceived in any manner, provided it is adapted. to carry out the specific function of enabling escape of the exhaust gases.
  • the ejection member 5a is made up of a rotating valve that practically cuts off or connects the ends of an exhaust duct 5b depending on its angular position.
  • the construction architecture of the ejection member 5a is very simple and is practically free from the dynamic problems affecting traditional poppet valves (that have a reciprocating motion and need complicated mechanisms to control the up and return strokes) , and at the same time can be synchronised with the remaining parts of the engine in a very simple manner, through direct connection with the propeller shaft 6 for example (possibly, through an appropriate reduction or gearing up ratio) .
  • the hitherto described engine can operate in the configuration shown in the figures (that in terms of useful strokes corresponds to a traditional four-cycle four-cylinder or a two-stroke two-cycle engine) ; at all events, if more power is wished to be obtained, a
  • multi-module power unit can be made that advantageously may comprise a given number of engines 1 of the above described type, mutually connected with each other so as to supply mechanical power to at least one common propeller shaft.
  • 25 coupling of three sliders corresponds to a traditional twelve-cylinder engine and so on.
  • the engine in accordance with the present invention can be advantageously 30 installed on any type of self-propelled vehicles (cars, motorcycles, heavy duty vehicles, boats, aeroplanes, etc) , that therefore will comprise at least one engine 1 and/or at least one multi-module power unit as above described.
  • self-propelled vehicles cars, motorcycles, heavy duty vehicles, boats, aeroplanes, etc
  • this engine or multi- module power unit in accordance with the above description as a mechanical power source _ for any machinery or industrial apparatus having one or more final uses of mechanical power connected to this engine itself and/or to a multi-module power unit.
  • the invention achieves important advantages.
  • one exhaust unit can efficiently operate on two distinct combustion chambers, whereas in traditional engines each combustion chamber must necessarily be provided with a suitable number of exhaust valves that will always and exclusively work for that given chamber.
  • the advantageous structural and operational integration achieved in the present invention can be also found in the inlet unit, since practically the selective and synchronised admission of fresh charge to the combustion chambers is not obtained through valves physically distinct from the other engine components but is advantageously achieved through a component that at the same time performs the function of a propeller shaft and a slider element directly operated by the combustion operations in the combustion chambers. Still in connection with the construction simplicity, it will be recognised that the present engine has a greatly reduced number of moving parts as compared with traditional devices: this involves a great simplification of the auxiliary- systems for control and synchronisation of the W
  • the reduction in the number of moving parts also brings 5 about a reduction in the inner engine frictions and consequently a reduction in wear of the different components
  • the useful strokes for producing mechanical power take place at a frequency that practically is four times the frequency of the useful strokes of a corresponding "otto-cycle" single-cylinder engine: this 15 advantageously enables more work to be performed in the time unit and consequently more power to be obtained.
  • the high efficiency in terms of work per time unit can be utilised to keep work speeds lower 20 than those of traditional engines, with further advantages in terms of reduction in stresses and therefore increase of the duration of life and liability.
  • the above discussed features enable a 25 high compactness to be maintained in the thermal unit of the engine that, still more advantageously, is associated with a great compactness and simplicity of the apparatus for release of the exhaust gases from the combustion chambers .
  • These features are very appreciated in order to 30 obtain excellent dynamic qualities in the vehicles on board of which such an engine is mounted ' .
  • 35 levels at reduced rpm (revolutions per minute) but at the same time can be obtained with any number of modules enabling still higher powers to be reached while yet maintaining a greatly reduced compactness as compared with an engine of the traditional type delivering the same power.
  • geometrical, structural and kinematic features of the present engine are characterised by the maximum simplicity and adaptability to the different operating requirements, which is advantageous for a more practical work, very reduced costs and flexibility in making changes .

Abstract

L'invention concerne un élément coulissant (2) engagé mobile dans une chambre de combustion (3a), un moyen d'admission (4) associé à la chambre de combustion (3a), destiné à l'introduction d'une quantité prédéterminée de mélange dans cette dernière, ainsi qu'un moyen d'évacuation (5) également associé à la chambre de combustion (3a), destiné à permettre l'évacuation des gaz d'échappement ; le moyen d'admission (4) est rigidement fixé à l'élément coulissant (2) et créé de manière sélective au moins une condition de fonctionnement pour le chargement de la première chambre de combustion (3a) à des points prédéterminés de la course de l'élément coulissant (2).
PCT/IT2003/000015 2003-01-17 2003-01-17 Moteur WO2004065762A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IT2003/000015 WO2004065762A1 (fr) 2003-01-17 2003-01-17 Moteur
AU2003207994A AU2003207994A1 (en) 2003-01-17 2003-01-17 Engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2003/000015 WO2004065762A1 (fr) 2003-01-17 2003-01-17 Moteur

Publications (1)

Publication Number Publication Date
WO2004065762A1 true WO2004065762A1 (fr) 2004-08-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2003/000015 WO2004065762A1 (fr) 2003-01-17 2003-01-17 Moteur

Country Status (2)

Country Link
AU (1) AU2003207994A1 (fr)
WO (1) WO2004065762A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007083254A2 (fr) * 2006-01-17 2007-07-26 Christiaan Philippus Von Stade Mécanisme de conversion
ES2376927A1 (es) * 2009-03-27 2012-03-21 Josep Poblet Fortuny Motor de explosión de combustión interna.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2018811A1 (de) * 1970-04-20 1971-11-04 Stahnke, Willi, 7000 Stuttgart Bad Cannstatt Schwingkolbenmaschine
DE2503559A1 (de) * 1975-01-29 1976-08-05 Friedrich Twachtmann Zweikammer-zweitakt-schwingkolbenmotor mit aussen liegenden kreuzgelenkaehnlichen kraftuebertragungselementen
DE20001047U1 (de) * 2000-01-21 2000-03-16 Schmid Heinrich Druckplattenmotor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2018811A1 (de) * 1970-04-20 1971-11-04 Stahnke, Willi, 7000 Stuttgart Bad Cannstatt Schwingkolbenmaschine
DE2503559A1 (de) * 1975-01-29 1976-08-05 Friedrich Twachtmann Zweikammer-zweitakt-schwingkolbenmotor mit aussen liegenden kreuzgelenkaehnlichen kraftuebertragungselementen
DE20001047U1 (de) * 2000-01-21 2000-03-16 Schmid Heinrich Druckplattenmotor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007083254A2 (fr) * 2006-01-17 2007-07-26 Christiaan Philippus Von Stade Mécanisme de conversion
WO2007083254A3 (fr) * 2006-01-17 2008-10-09 Stade Christiaan Philippus Von Mécanisme de conversion
JP2009523950A (ja) * 2006-01-17 2009-06-25 ステード，クリスチアーン，フィリップス フォン 振動ピストンとその変換機構
US8082891B2 (en) 2006-01-17 2011-12-27 Christiaan Phillippus Von Stade Conversion mechanism for a pivoting reciprocating engine
JP4908521B2 (ja) * 2006-01-17 2012-04-04 ステード，クリスチアーン，フィリップス フォン 振動ピストンとその変換機構
ES2376927A1 (es) * 2009-03-27 2012-03-21 Josep Poblet Fortuny Motor de explosión de combustión interna.

Also Published As

Publication number Publication date
AU2003207994A1 (en) 2004-08-13

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