EP0115257A1 - Caburating displacement engine with pistons arranged one within another and slide-valves - Google Patents

Caburating displacement engine with pistons arranged one within another and slide-valves Download PDF

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Publication number
EP0115257A1
EP0115257A1 EP83830259A EP83830259A EP0115257A1 EP 0115257 A1 EP0115257 A1 EP 0115257A1 EP 83830259 A EP83830259 A EP 83830259A EP 83830259 A EP83830259 A EP 83830259A EP 0115257 A1 EP0115257 A1 EP 0115257A1
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EP
European Patent Office
Prior art keywords
volumetric
piston
pistons
engine according
valves
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Withdrawn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
EP83830259A
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German (de)
French (fr)
Inventor
Mario Bertocci
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Individual
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Individual
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Publication of EP0115257A1 publication Critical patent/EP0115257A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/04—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • 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
    • F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F01B7/20—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/22—Multiple-valve arrangements
    • 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
    • F02B75/30—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with one working piston sliding inside another

Definitions

  • the invention relates to a volumetric carburetion engine with intubated pistons and slip valves.
  • the main object of the present invention is to improve the efficiency of a volumetric single-effect carburetion engine.
  • FIG. 1 shows the vertical section along the motor shaft of the core of a cylinder with its cylinder head for an engine produced according to the invention
  • FIG. 2 represents section AA of FIG. 1
  • FIG. 3 represents the section BB of FIG. 1.
  • the operation is as follows.
  • the main piston (2) descends and generates the volume of the chamber (20)
  • the secondary piston (7) descends and generates the volume of the chamber (70) which constitutes the additional displacement
  • the two pistons (2-7) go back to their common PMS
  • the pistons descend to their respective PMI (lower dead centers) and, since the piston (7) performs a longer stroke than the pistons (2), it allows to collect a force additional burnt gas expansion
  • the two pistons go back to their common PMS.

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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)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The engine has a main piston (2) operating in each cylinder (1). The main piston has two connecting rods (5) to connect it to the crankshaft (6). The main piston has a central bore which houses a second piston (7). The second piston is also connected to the crankshaft, but the throw of the crankpin (62) is greater than the pins (61) of the main piston. The engine is fitted with horizontally sliding overhead valves.

Description

L.'invention concerne un moteur à carburation volumétrique avec pistons intubés et soupapes à glissement.The invention relates to a volumetric carburetion engine with intubated pistons and slip valves.

On sait que les moteurs à carburation volumétrique à effet simple connus de nos jours utilisent un seul piston pour chaque cylindre, de sorte que la charge qui peut être aspirée à la pression atmosphé rique et le rapport de compression qui en résulte soient définis par la cylindrée engendrée par le piston durant sa course d'aspiration et, de méme, la force de détente recueillie après la combustion est limitée par la course du piston.It is known that single-effect volumetric carburetion engines known today use a single piston for each cylinder, so that the load which can be sucked in at atmospheric pressure and the resulting compression ratio are defined by the displacement generated by the piston during its suction stroke and, similarly, the expansion force collected after combustion is limited by the stroke of the piston.

Le but principal de la présente invention consiste à améliorer le rendement d'un moteur à carburation volumétrique à effet simple.The main object of the present invention is to improve the efficiency of a volumetric single-effect carburetion engine.

On est parvenu à ce résultat, conformément à l'invention, de la manière suivante: en augmentant, à parité d'alésage et de course du piston, la cylindrée disponibile en créant, dans le corps du piston principal, une chambre supplémentaire dont la cylindrée est istantanément définie par un piston sup plémentaire, se déplaçant selon un mouvement recti ligne alternatif, en coordination avec le mouvement du piston principal; et en même temps, en augmentant l'ouverture pour le passage de la charge et des gaz brùlés en utilisant des soupapes à glisse-Les avantages obtenus gràce à la présente invention consistent essentiellement en ce que la cylindrée disponibile peut être sensiblement accrue (15-20%); que le rapport de compression peut être notablement accru(15-20%);que la puissance et la force recueillie sont supérieures; que la vitesse peut être réduite à parité de puissance, avec réduction de la consommation de carburant; que les soupapes sont à amplitude rapide, sans heurt, silencieuses et que leur mouvement dépend de l'arbre-moteur par l'inter médiaire d'une courroie dentée; que les conduits d'admission et d' échappemnt des gaz brùles sont courts.This has been achieved, in accordance with the invention, in the following manner: by increasing, with the same bore and stroke of the piston, the available displacement by creating, in the body of the main piston, an additional chamber whose displacement is istantently defined by an additional piston, moving in an alternating straight line movement, in coordination with the movement of the main piston; and at the same time, increasing the opening for the passage of the load and the burnt gases by using sliding valves- The advantages obtained thanks to the present invention essentially consist in that the available cubic capacity can be appreciably increased (15-20%); that the compression ratio can be significantly increased (15-20%); that the power and force collected are greater; that the speed can be reduced to power parity, with reduction in fuel consumption; that the valves are of rapid amplitude, smooth, silent and that their movement depends on the motor shaft by means of a toothed belt; that the combustion gas intake and exhaust ducts are short.

Dans ce qui suit, l'invention est exposée plus en détail à l'aide de dessins représentant seulement un mode d'exécution.In the following, the invention is explained in more detail using drawings representing only one embodiment.

Dans la PLANCHE 1 la FIG. 1 représente la coupe verticale suivant l'arbre-moteur de l'àme d'un cylindre avec sa culasse pour un moteur réalisé suivant l'invention; dans la PLANCHE 2 la FIG. 2 représente la coupe AA de la FIG. 1; la FIG. 3 représente la coupe BB de la FIG. 1.In PLATE 1 FIG. 1 shows the vertical section along the motor shaft of the core of a cylinder with its cylinder head for an engine produced according to the invention; in PLATE 2 FIG. 2 represents section AA of FIG. 1; FIG. 3 represents the section BB of FIG. 1.

Réduit à sa structure essentielle et en se référant aux dessis ci-joints, un moteur à carburation volumétrique avec pistons intubés et soupapes à glissement conforme à l'invention est constitué:

  • - d'un ou plusieurs cylindres dans l'àme (1) duquel ou desquels glisse un premier piston (2) dont la cu lasse (20) est munie d'une percée (21) centrale dans laquelle est insérée une àme (24) de longueur identique à celle du piston (2) et concentrique au conduit (22) avec lequel elle définit une gorge annulaire(3); deux tourrilons (4) en ligne, fixés audit conduit (22) permettent l'articulation du pied de deux premièrs bielles (5) symétriques et avec la culasse articulée à deux premières manivelles (61) de l'arbre-moteur (6). A l'interieur de la dite àme (24) glisse un second piston (7) dont le tourillon (8) permet l'articulation d'une troisième bielle (9) centrale et dont la culasse est articulée sur une troisième manivelle (62) de l'arbre-mo teur (6): cette troisième manivelle (61) a une Ion gueur double de celle des premières manivelles (61) de sorte que la course du second piston (7) à l'in térieur de l'àme (24) soit identique à la course du premier piston (2) dans l'àme (1) et soit en outre orientée par rapport à l'axe de l'arbre-moteur (6) comme les autres manivelles afin de permettre aux culasse desdits pistons (2-7) d'étre dans le même plan au PMS.
  • - D'une culasse (10) avec la chambre de combustion (11)et les conduits(12-13),respectivement d'amdmis- sion et d'échappement, qui sont interceptés par deux soupapes (14) cylindriques avec segment, de type à glissement, en deux chemises (15) correspondantes horizontales et parallèles, et en outre asservies à un arbre (16) avec des excentriques (17) placé en tête du moteur et dont la rotation dépend de l'arbre-moteur (6) par l'intermédiaire d'une courroie dentée (19): lesdits excentriques (17) ont la partie active du profil particulièrement pointue pour permettre une course rapide d'ouverture des soupapes (14); la course de fermeture est assurée par un ressort (18) de rappel.
Reduced to its essential structure and with reference to the attached drawings, a volumetric carburetion engine with intubated pistons and sliding valves in accordance with the invention consists of:
  • - one or more cylinders in the core (1) of which one or more slides a first piston (2) whose cu lasse (20) is provided with a central hole (21) in which is inserted a core (24) of length identical to that of the piston (2) and concentric with the conduit (22) with which it defines an annular groove (3) ; two tourrilons (4) in line, fixed to said conduit (22) allow the articulation of the foot of two first connecting rods (5) symmetrical and with the articulated cylinder head to two first cranks (61) of the motor shaft (6). Inside said core (24) slides a second piston (7) whose journal (8) allows the articulation of a third central connecting rod (9) and whose cylinder head is articulated on a third crank (62) of the motor shaft (6): this third crank (61) has an ion twice that of the first cranks (61) so that the stroke of the second piston (7) inside the core (24) is identical to the stroke of the first piston (2) in the core (1) and is further oriented relative to the axis of the motor shaft (6) like the other cranks to allow the cylinder heads said pistons (2-7) to be in the same plane at the PMS.
  • - A cylinder head (10) with the combustion chamber (11) and the ducts (12-13), respectively of intake and exhaust, which are intercepted by two cylindrical valves (14) with segment, of sliding type, in two liners (15) corresponding horizontal and parallel, and further controlled by a shaft (16) with eccentrics (17) placed at the head of the motor and whose rotation depends on the motor shaft (6) by means of a toothed belt (19): said eccentrics (17) have the active part of the profile particularly pointed to allow a rapid opening stroke of the valves (14); the closing stroke is ensured by a return spring (18).

Le fonctionnement est le suivant. Dans la phase d' aspiration, pendant que le piston principal (2) descend et engendre le volume de la chambre (20), le piston secondaire (7) descend et engendre le volume de la chambre (70)qui constitue la cylindrée supplémentaire; dans la phase de compression, les deux pistons (2-7) remontent jusqu'à leur commun PMS; dans la phase de détente, les pistons redescen dent jusqu'à leurs respectifs PMI(points morts infé rieurs) et, étant donné que le piston (7) effectue une course plus longue que le pistons (2), il permet de recueillir une force de détente des gaz brùlés supplémentaire; dans la phase d'échappement, lex deux pistons remontent jusqu'à leur commun PMS.The operation is as follows. In the aspiration phase, while the main piston (2) descends and generates the volume of the chamber (20), the secondary piston (7) descends and generates the volume of the chamber (70) which constitutes the additional displacement; in the compression phase, the two pistons (2-7) go back to their common PMS; in the expansion phase, the pistons descend to their respective PMI (lower dead centers) and, since the piston (7) performs a longer stroke than the pistons (2), it allows to collect a force additional burnt gas expansion; in the exhaust phase, the two pistons go back to their common PMS.

Claims (8)

1) Un moteur à carburation volumétrique caractérisé par le fait que, pour chaque cylindre, il comprend deux pistons (2-7) intubés de manière telle que dans les phases d'aspiration et de deténte suite à la combustion, le second piston(7) engendre une cylindrée (70) supplémentaire à la cylindrée (20) engendrée par le premier piston (2) et que, en combinaison, il comprend deux soupapes (14)en culas se, de type à glissement.1) A volumetric carburetion engine characterized in that, for each cylinder, it comprises two pistons (2-7) intubated in such a way that in the suction and relaxation phases following combustion, the second piston (7 ) generates a displacement (70) additional to the displacement (20) generated by the first piston (2) and that, in combination, it comprises two valves (14) in cylinder head, of the sliding type. 2) Un moteur à carburation volumétrique selon la revendication 1) caractérisé par le fait que le second (7) desdits pistons (2-7) glisse dans une àme (24) fixée dans l'axe du premier piston (2).2) A volumetric carburetion engine according to claim 1) characterized in that the second (7) of said pistons (2-7) slides in a core (24) fixed in the axis of the first piston (2). 3) Un moteur a carburation volumétrique selon la revendication 1) caractérisé per le fait que le second piston (7) sus-mentionné effectue une course double par rapport à celle du premier piston (2).3) A volumetric carburetion engine according to claim 1) characterized in that the second piston (7) mentioned above performs a double stroke compared to that of the first piston (2). 4) Un moteur à carburation volumétrique selon la revendication 1) caractérisé par le fait que les deux pistons (2-7) sus-mentionnés ont le même PMS.4) A volumetric carburetion engine according to claim 1) characterized in that the two pistons (2-7) mentioned above have the same PMS. 5) Un moteur à carburation volumétrique selon la revendication 1) caractérisé per le fait que sur le premier (2) des deux pistons(2-7) sus-mentionnés sont articulées deux bielles (5) disposées symétriquement par rapport à la bielle (9) du second pistons (7).5) A volumetric carburetion engine according to claim 1) characterized in that on the first (2) of the two pistons (2-7) mentioned above are articulated two connecting rods (5) arranged symmetrically with respect to the connecting rod (9 ) of the second pistons (7). 6) Un moteur à carburation volumétrique selon la revendication 1) caractérisé per le fait que les soupapes (14) sus-mentionnées ont un corps cylindri que pourvu de segments étanches et glissant dans des chemises correspondantes(15)horizontales, paral lèles entre elles et situées dans la même plan.6) A volumetric carburetion engine according to claim 1) characterized in that the above-mentioned valves (14) have a cylindrical body that provided with tight and sliding segments in corresponding shirts (15) horizontal, parallel to each other and located in the same plane. 7) Un moteur à carburation volumétrique selon la revendication 1) caractérisé par le fait que l'ouverture desdites soupapes (14) est commandée per un arbre (16) avec des excentriques (17), placé en tête du moteur et dont le mouvement dépend de l' arbre-moteur (6) par l'intermédiaire d'un courroie (19) dentée.7) A volumetric carburetion engine according to claim 1) characterized in that the opening of said valves (14) is controlled by a shaft (16) with eccentrics (17), placed at the head of the engine and on which the movement depends of the motor shaft (6) by means of a toothed belt (19). 8) Un moteur à carburation volumétrique selon la revendication 1)caractérisé par le fait que lesdits excentriques (17) ont la partie active du profil fort pointue, de manière à permettre une course rapide d'ouverture des soupapes (14), leur course de fermeture étant obtenue au moyen d'un ressort (18) de rappel.8) A volumetric carburetion engine according to claim 1) characterized in that said eccentrics (17) have the active part of the sharp profile, so as to allow a rapid opening stroke of the valves (14), their stroke closure being obtained by means of a return spring (18).
EP83830259A 1982-12-31 1983-12-07 Caburating displacement engine with pistons arranged one within another and slide-valves Withdrawn EP0115257A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT9588 1982-12-31
IT09588/82A IT1192945B (en) 1982-12-31 1982-12-31 VOLUMETRIC CARBURETOR ENGINE WITH INTUBATED PADS AND SLIDING VALVES

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EP0115257A1 true EP0115257A1 (en) 1984-08-08

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EP83830259A Withdrawn EP0115257A1 (en) 1982-12-31 1983-12-07 Caburating displacement engine with pistons arranged one within another and slide-valves

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EP (1) EP0115257A1 (en)
JP (1) JPS59162321A (en)
IT (1) IT1192945B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6991869B2 (en) 1999-05-08 2006-01-31 Lynntech Power Systems, Ltd. Unitized barrier and flow control device for electrochemical reactors
WO2007104572A1 (en) * 2006-03-16 2007-09-20 Teshnehkam Haroot Internal combustion engine and piston for internal combustion engine
FR2904042A1 (en) * 2006-07-21 2008-01-25 Peugeot Citroen Automobiles Sa Internal combustion engine e.g. diesel engine, has piston breaking down into internal and external pistons, which are connected to crank pin, where crank pin is provided under form of two sections parallel to each other and are off-centered
RU2623334C2 (en) * 2015-07-16 2017-06-23 Александр Андреевич Грабовский Method of heat cycle formation and device for its implementation
WO2018151689A1 (en) * 2017-02-18 2018-08-23 Eden Gizem Telescopic piston configuration for internal combustion engines
RU2734696C1 (en) * 2020-04-28 2020-10-22 Акционерное общество "Северный пресс" Two-stroke internal combustion engine
RU2753076C1 (en) * 2020-04-10 2021-08-11 Евгений Николаевич Захаров Cylinder-and-piston group of two-stroke engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649728U (en) * 1992-05-12 1994-07-08 秀行 江澤 Double piston engine
JP5322076B2 (en) * 2006-11-07 2013-10-23 陳永清 engine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR480734A (en) * 1916-01-17 1916-09-14 Georges Binche Two-stroke explosion engine
DE478964C (en) * 1929-07-06 Douglas J Martin Internal combustion engine with auxiliary piston
DE543393C (en) * 1929-08-28 1932-02-05 Martin Motors Inc Two-stroke internal combustion engine with main and auxiliary pistons
FR1394902A (en) * 1964-02-25 1965-04-09 Further development of distribution equipment for internal combustion engines
DE2142455A1 (en) * 1971-08-25 1973-03-01 Rudolf Clausing DOUBLE PISTON
CH560835A5 (en) * 1973-02-19 1975-04-15 Andres Eng Reciprocating sleeve piston motor - with main and auxiliary pistons and con-rods operating on the same crankshaft
BE836445A (en) * 1975-12-09 1976-04-01 FOUR-STROKE EXPLOSION ENGINE
EP0038781A1 (en) * 1980-04-11 1981-10-28 Francesco Conti Distribution device for an internal-combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE478964C (en) * 1929-07-06 Douglas J Martin Internal combustion engine with auxiliary piston
FR480734A (en) * 1916-01-17 1916-09-14 Georges Binche Two-stroke explosion engine
DE543393C (en) * 1929-08-28 1932-02-05 Martin Motors Inc Two-stroke internal combustion engine with main and auxiliary pistons
FR1394902A (en) * 1964-02-25 1965-04-09 Further development of distribution equipment for internal combustion engines
DE2142455A1 (en) * 1971-08-25 1973-03-01 Rudolf Clausing DOUBLE PISTON
CH560835A5 (en) * 1973-02-19 1975-04-15 Andres Eng Reciprocating sleeve piston motor - with main and auxiliary pistons and con-rods operating on the same crankshaft
BE836445A (en) * 1975-12-09 1976-04-01 FOUR-STROKE EXPLOSION ENGINE
EP0038781A1 (en) * 1980-04-11 1981-10-28 Francesco Conti Distribution device for an internal-combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6991869B2 (en) 1999-05-08 2006-01-31 Lynntech Power Systems, Ltd. Unitized barrier and flow control device for electrochemical reactors
WO2007104572A1 (en) * 2006-03-16 2007-09-20 Teshnehkam Haroot Internal combustion engine and piston for internal combustion engine
FR2904042A1 (en) * 2006-07-21 2008-01-25 Peugeot Citroen Automobiles Sa Internal combustion engine e.g. diesel engine, has piston breaking down into internal and external pistons, which are connected to crank pin, where crank pin is provided under form of two sections parallel to each other and are off-centered
RU2623334C2 (en) * 2015-07-16 2017-06-23 Александр Андреевич Грабовский Method of heat cycle formation and device for its implementation
WO2018151689A1 (en) * 2017-02-18 2018-08-23 Eden Gizem Telescopic piston configuration for internal combustion engines
RU2753076C1 (en) * 2020-04-10 2021-08-11 Евгений Николаевич Захаров Cylinder-and-piston group of two-stroke engine
RU2734696C1 (en) * 2020-04-28 2020-10-22 Акционерное общество "Северный пресс" Two-stroke internal combustion engine

Also Published As

Publication number Publication date
IT8209588A0 (en) 1982-12-31
IT1192945B (en) 1988-05-26
JPS59162321A (en) 1984-09-13

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