EP0799978A2 - Two stroke internal combustion engine with crosshead and comprising rotary sleeve distribution - Google Patents

Two stroke internal combustion engine with crosshead and comprising rotary sleeve distribution Download PDF

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Publication number
EP0799978A2
EP0799978A2 EP97430009A EP97430009A EP0799978A2 EP 0799978 A2 EP0799978 A2 EP 0799978A2 EP 97430009 A EP97430009 A EP 97430009A EP 97430009 A EP97430009 A EP 97430009A EP 0799978 A2 EP0799978 A2 EP 0799978A2
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EP
European Patent Office
Prior art keywords
piston
cylinder
combustion engine
internal combustion
ports
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EP97430009A
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German (de)
French (fr)
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EP0799978A3 (en
Inventor
Pierre Bourguignon
Emmanuel Zylber
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Individual
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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
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L7/04—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • F02B33/10—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder
    • 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
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the present invention relates to a two-stroke buttstock combustion engine comprising a rotary jacket distribution system.
  • the internal combustion engine or internal combustion engine, comprises at least one cylinder in which a piston moves which, by means of a connecting rod and crankshaft mechanism rotates a shaft.
  • the complete thermodynamic cycle of an internal combustion engine can be described either during a single crankshaft revolution (i.e. during two piston strokes), or during two turns (four piston strokes). We say, in the first case, that the engine is two-stroke and, in the second that it is four-stroke.
  • the so-called “lacrosse” engines have the particularity of comprising a rod (the lacrosse rod) integral with the piston, of the same axis as it, and opening into the crankshaft housing where it is articulated on the connecting rod head.
  • the lateral reaction of the latter on the piston is suppressed and collected by slides or guides of various types, for example with anti-friction metal, balls or rollers.
  • thermodynamic cycle In the two-stroke engine, it is sought to carry out a thermodynamic cycle so that ignition and expansion take place at each crankshaft revolution. Theoretically, such an engine should have twice the power of a four-stroke engine with the same dimensions and the same rotational speed. In reality, the power ratio of the two engines instead of being equal to two, is only 1.4 to 1.5, because certain transformations constituting the cycle are carried out there in more unfavorable conditions than in an engine four-stroke.
  • Two-stroke engines generally have orifices or openings made in the side walls of the cylinder and intended to ensure the admission and the exhaust of gases. These lights are hidden or discovered by the piston depending on its position. When the latter is in bottom dead center, the two types of light are opened simultaneously, which inevitably leads to a mixture of fresh and burnt gases, as well as an imperfect filling of the explosion chamber. This is the main cause of the poor performance of this type of engine.
  • the device according to the present invention aims to remedy this state of affairs by controlling the opening and closing points of the intake and exhaust ports so as to ensure total elimination of the burnt gases and complete filling of the cylinder.
  • a two-stroke stick-type internal combustion engine comprising, on the one hand, a double-walled cylinder between which rotates a cylindrical sheath provided with orifices controlling the opening of the intake and exhaust ports and, on the other hand, an auxiliary piston arranged in the crankshaft housing and intended to compress the fresh gases to ensure proper filling of the explosion chamber at the same time as a very efficient sweeping of the burnt gases.
  • FIGS. 1 to 3 consists of an engine block comprising a cylinder 1, in which a driving piston 2 acts on the crankshaft by means of a stick rod 3 and a connecting rod 4.
  • a wall separation 5, located at the base of the cylinder, is arranged between the latter and the casing 6 containing the crankshaft.
  • This wall has a socket 7 with a sealed orifice for the passage of the butt rod 3.
  • the latter drives a feed piston 8, or sweeper, sliding in an auxiliary cylinder 9 arranged in the crankcase.
  • the cylinder 1 comprises a double lateral envelope, formed of an inner wall 10 and an outer wall 11 concentric, between which rotates a cylindrical sheath 12 of distribution.
  • the intake 13 and exhaust 14 lights pass through these two walls and open to the outside of the cylinder in two peripheral ducts, inlet 15 and exhaust 16 respectively, fixed on the external wall 11.
  • the peripheral inlet duct communicates, by a tube 17 provided for this purpose, with the space at the rear of the driving piston 2, the gases contained in the auxiliary cylinder 9 containing the sweeping piston 8 being able to be transferred into this space by means of conduits 18 arranged in the partition wall 5 and also connected to the fresh air intake 19.
  • the intake ports 13 are inclined both in the axial direction and in the radial direction of the cylinder 1, so as to impart to the fresh gases a circular movement directed towards the head of the cylinder.
  • the distribution sleeve 12 is pierced with transfer orifices 20, inlet 21 and exhaust 22 arranged so as to be able to coincide with the corresponding lights of the cylinder 2.
  • Supply orifices 23 provided at the base of the sleeve control the arrival of fresh gas.
  • the rotation of the distribution sleeve is obtained by means of a pinion 24 meshing with a toothed ring 25 situated at its base, and driven synchronously by the drive shaft by means of a chain or a toothed belt, for example.
  • the sleeve rotates by an angle equal to the angular pitch of the intake lights 13, 21 and exhaust 14, 22. For example, if the cylinder includes eight lights of each type, the cylindrical sleeve one eighth of a crankshaft turn.
  • the exhaust ports 22 will be offset from the other ports, so that the exhaust ports 14 are fully open when the piston 2 exposes them.
  • a prototype in progress includes eight lights of each type. So there is one turn of the distribution sleeve for eight engine turns, but, depending on future achievements, the number and settings may be different.
  • the diameter of the feed piston 8 will preferably be substantially greater than that of the drive piston 2 so as to cause the explosion chamber to be force-fed.
  • a counter-piston 26 secured to the engine block will be advantageously provided, mounted at the lower part of the cylinder on the partition wall 5 and determined to occupy almost all of the internal volume of the piston. motor 2 when it is in bottom dead center.
  • the lubrication of the engine may be of the conventional type by pressure, (no mixture of oil in the fuel).

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

Abstract

The two stroke i.c. engine comprises a rotating liner distribution system. The cylinder (1) has double concentric walls (10,11) between which the liner (12) rotates. The liner comprises a cylindrical sheath with fresh air supply orifices (23), transfer, inlet and exhaust orifices located so as to control opening of the corresponding cylinder ports. The cylindrical liner is rotated synchronously through a drive shaft by an appropriate transmission such that in each rotation of the crankshaft the liner rotates through an angle equal to the angular pitch of the inlet and exhaust ports. A supply piston (8) driven by the cross rod (3) connecting the engine piston (2) to the rod (4) slides in an auxiliary cylinder in the crankcase (6). The supply piston induces and compresses fresh air then transfers it into the internal volume located behind the engine piston where it is passed into the combustion chamber.

Description

La présente invention a pour objet un moteur à explosion deux temps à crosse comportant un système de distribution à chemise rotative.The present invention relates to a two-stroke buttstock combustion engine comprising a rotary jacket distribution system.

Il est destiné d'une façon générale à améliorer le rendement des moteurs à explosion à deux temps, c'est à dire dans lesquels les phases d'admission, de compression, de combustion, de détente et d'échappement s'effectuent durant un seul tour du vilebrequin, et plus particulièrement les moteurs deux temps Diesel ou à injection d'essence.It is generally intended to improve the efficiency of two-stroke internal combustion engines, that is to say in which the intake, compression, combustion, expansion and exhaust phases are carried out during single turn of the crankshaft, and more particularly two-stroke diesel or petrol injection engines.

Le moteur à explosion, ou moteur à combustion interne, comporte au moins un cylindre dans lequel se déplace un piston qui, par l'intermédiaire d'un mécanisme à bielle et vilebrequin fait tourner un arbre. Le cycle thermodynamique complet d'un moteur à explosion peut être décrit soit pendant un seul tour de vilebrequin (c'est-à-dire pendant deux courses du piston), soit pendant deux tours (quatre courses du piston). On dit, dans le premier cas, que le moteur est à deux temps et, dans le second qu'il est à quatre temps.The internal combustion engine, or internal combustion engine, comprises at least one cylinder in which a piston moves which, by means of a connecting rod and crankshaft mechanism rotates a shaft. The complete thermodynamic cycle of an internal combustion engine can be described either during a single crankshaft revolution (i.e. during two piston strokes), or during two turns (four piston strokes). We say, in the first case, that the engine is two-stroke and, in the second that it is four-stroke.

Les moteurs dits "à crosse" ont la particularité de comporter une tige (la tige de crosse) solidaire du piston, de même axe que lui, et débouchant dans le carter de vilebrequin où elle est articulée sur la tête de bielle. La réaction latérale de cette dernière sur le piston est supprimée et encaissée par des glissières ou guides de types variés, par exemple à métal anti-friction, à billes ou à galets.The so-called "lacrosse" engines have the particularity of comprising a rod (the lacrosse rod) integral with the piston, of the same axis as it, and opening into the crankshaft housing where it is articulated on the connecting rod head. The lateral reaction of the latter on the piston is suppressed and collected by slides or guides of various types, for example with anti-friction metal, balls or rollers.

Dans le moteur à deux temps, on cherche à réaliser un cycle thermodynamique de telle sorte que l'allumage et la détente aient lieu à chaque tour de vilebrequin. Théoriquement, un tel moteur devrait avoir une puissance deux fois plus grande que celle du moteur à quatre temps ayant les mêmes dimensions et la même vitesse de rotation. En réalité, le rapport de puissance des deux moteurs au lieu d'être égal à deux, n'est que de 1,4 à 1,5, car certaines transformations constituant le cycle y sont effectuées dans des conditions plus défavorables que dans un moteur à quatre temps.In the two-stroke engine, it is sought to carry out a thermodynamic cycle so that ignition and expansion take place at each crankshaft revolution. Theoretically, such an engine should have twice the power of a four-stroke engine with the same dimensions and the same rotational speed. In reality, the power ratio of the two engines instead of being equal to two, is only 1.4 to 1.5, because certain transformations constituting the cycle are carried out there in more unfavorable conditions than in an engine four-stroke.

Les moteurs à deux temps comportent généralement des orifices ou lumières pratiquées sur les parois latérales du cylindre et destinées à assurer l'admission et l'échappement des gaz. Ces lumières sont masquées ou découvertes par le piston en fonction de sa position. Lorsque ce dernier est au point mort bas, les deux types de lumière sont ouverts simultanément, ce qui entraîne inévitablement un mélange des gaz frais et des gaz brûlés, ainsi qu'un remplissage imparfait de la chambre d'explosion. C'est la cause principale du rendement médiocre de ce type de moteur.Two-stroke engines generally have orifices or openings made in the side walls of the cylinder and intended to ensure the admission and the exhaust of gases. These lights are hidden or discovered by the piston depending on its position. When the latter is in bottom dead center, the two types of light are opened simultaneously, which inevitably leads to a mixture of fresh and burnt gases, as well as an imperfect filling of the explosion chamber. This is the main cause of the poor performance of this type of engine.

Le dispositif selon la présente invention a pour objectif de remédier à cet état de choses en contrôlant les points d'ouverture et de fermeture des lumières d'admission et d'échappement de manière à assurer une élimination totale des gaz brûlés et un remplissage complet du cylindre.The device according to the present invention aims to remedy this state of affairs by controlling the opening and closing points of the intake and exhaust ports so as to ensure total elimination of the burnt gases and complete filling of the cylinder.

Il est constitué d'un moteur à explosion deux temps de type à crosse comportant, d'une part, un cylindre à double parois entre lesquelles tourne un fourreau cylindrique pourvus d'orifices contrôlant l'ouverture des lumières d'admission et d'échappement et, d'autre part, un piston auxiliaire disposé dans le carter de vilebrequin et destiné à comprimer les gaz frais pour assurer un bon remplissage de la chambre d'explosion en même temps qu'un balayage très efficace des gaz brûlés.It consists of a two-stroke stick-type internal combustion engine comprising, on the one hand, a double-walled cylinder between which rotates a cylindrical sheath provided with orifices controlling the opening of the intake and exhaust ports and, on the other hand, an auxiliary piston arranged in the crankshaft housing and intended to compress the fresh gases to ensure proper filling of the explosion chamber at the same time as a very efficient sweeping of the burnt gases.

Sur les dessins schématiques de principe annexés, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention:

  • la figure 1 représente un cylindre, ainsi qu'une partie du carter, vu en coupe axiale,
  • la figure 2 est une coupe transversale suivant les flèches A-A de la figure 1
  • et la figure 3 représente une partie du fourreau rotatif vu latéralement.
In the appended diagrammatic drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention:
  • FIG. 1 represents a cylinder, as well as part of the casing, seen in axial section,
  • Figure 2 is a cross section along the arrows AA of Figure 1
  • and Figure 3 shows a part of the rotary sleeve seen laterally.

Le dispositif, figures 1 à 3, est constitué d'un bloc moteur comportant un cylindre 1, dans lequel un piston moteur 2 agit sur le vilebrequin par l'intermédiaire d'une tige de crosse 3 et d'une bielle 4. Une paroi de séparation 5, située à la base du cylindre, est disposée entre celui-ci et le carter 6 contenant le vilebrequin. Cette paroi comporte une douille 7 avec orifice étanche de passage de la tige de crosse 3. Cette dernière entraîne un piston alimenteur 8, ou balayeur, coulissant dans un cylindre auxiliaire 9 aménagé dans le carter de vilebrequin.The device, FIGS. 1 to 3, consists of an engine block comprising a cylinder 1, in which a driving piston 2 acts on the crankshaft by means of a stick rod 3 and a connecting rod 4. A wall separation 5, located at the base of the cylinder, is arranged between the latter and the casing 6 containing the crankshaft. This wall has a socket 7 with a sealed orifice for the passage of the butt rod 3. The latter drives a feed piston 8, or sweeper, sliding in an auxiliary cylinder 9 arranged in the crankcase.

Le cylindre 1 comporte une double enveloppe latérale, formée d'une paroi interne 10 et d'une paroi externe 11 concentriques, entre lesquelles tourne un fourreau cylindrique 12 de distribution. Les lumières d'admission 13 et d'échappement 14 traversent ces deux parois et débouchent à l'extérieur du cylindre dans deux conduits périphériques, respectivement d'admission 15 et d'échappement 16, fixés sur la paroi externe 11. Le conduit périphérique d'admission communique, par une tubulure 17 prévue à cet effet, avec l'espace situé à l'arrière du piston moteur 2, les gaz contenus dans le cylindre auxiliaire 9 contenant le piston balayeur 8 pouvant être transférés dans cet espace grâce à des conduits 18 aménagés dans la paroi de séparation 5 et reliés également à l'arrivée d'air frais 19.The cylinder 1 comprises a double lateral envelope, formed of an inner wall 10 and an outer wall 11 concentric, between which rotates a cylindrical sheath 12 of distribution. The intake 13 and exhaust 14 lights pass through these two walls and open to the outside of the cylinder in two peripheral ducts, inlet 15 and exhaust 16 respectively, fixed on the external wall 11. The peripheral inlet duct communicates, by a tube 17 provided for this purpose, with the space at the rear of the driving piston 2, the gases contained in the auxiliary cylinder 9 containing the sweeping piston 8 being able to be transferred into this space by means of conduits 18 arranged in the partition wall 5 and also connected to the fresh air intake 19.

Les lumières d'admission 13 sont inclinées à la fois dans le sens axial et dans le sens radial du cylindre 1, de façon à imprimer aux gaz frais un mouvement circulaire dirigé vers la tête du cylindre.The intake ports 13 are inclined both in the axial direction and in the radial direction of the cylinder 1, so as to impart to the fresh gases a circular movement directed towards the head of the cylinder.

Le fourreau de distribution 12 est percé d'orifices de transfert 20, d'admission 21 et d'échappement 22 disposés de manière à pouvoir coïncider avec les lumières correspondantes du cylindre 2. Des orifices d'alimentation 23 prévus à la base du fourreau contrôlent l'arrivée de gaz frais. La rotation du fourreau de distribution est obtenue grâce à un pignon 24 engrenant sur une couronne dentée 25 située à sa base, et entraîné de façon synchrone par l'arbre moteur au moyen d'une chaîne ou d'une courroie crantée, par exemple. A chaque tour du vilebrequin, le fourreau tourne d'un angle égal au pas angulaire des lumières d'admission 13, 21 et d'échappement 14, 22. Par exemple, si le cylindre comprend huit lumières de chaque type, le fourreau cylindrique effectuera un huitième de tour par tour de vilebrequin.The distribution sleeve 12 is pierced with transfer orifices 20, inlet 21 and exhaust 22 arranged so as to be able to coincide with the corresponding lights of the cylinder 2. Supply orifices 23 provided at the base of the sleeve control the arrival of fresh gas. The rotation of the distribution sleeve is obtained by means of a pinion 24 meshing with a toothed ring 25 situated at its base, and driven synchronously by the drive shaft by means of a chain or a toothed belt, for example. At each revolution of the crankshaft, the sleeve rotates by an angle equal to the angular pitch of the intake lights 13, 21 and exhaust 14, 22. For example, if the cylinder includes eight lights of each type, the cylindrical sleeve one eighth of a crankshaft turn.

Les orifices d'échappement 22 seront décalés par rapport au autres orifices, de façon à ce que les lumières d'échappement 14 soient totalement ouvertes au moment où le piston 2 les démasque.The exhaust ports 22 will be offset from the other ports, so that the exhaust ports 14 are fully open when the piston 2 exposes them.

Au cours d'une rotation de 360° de l'arbre du moteur (vilebrequin), les phases suivantes se déroulent :During a 360 ° rotation of the engine shaft (crankshaft), the following phases take place:

A partir du point mort haut (0°), le piston moteur 2 descend sous la force de l'explosion ou de la combustion des gaz; le piston alimenteur 8 descend de même en aspirant de l'air frais.From top dead center (0 °), the driving piston 2 descends under the force of the explosion or combustion of the gases; the feed piston 8 also descends by sucking in fresh air.

Vers 130° le piston 2 découvre les lumières d'échappement 14 qui sont ouvertes par la rotation du fourreau cylindrique.Around 130 ° the piston 2 discovers the exhaust ports 14 which are opened by the rotation of the cylindrical sheath.

Vers 140° les lumières d'admission 13, 21 s'ouvrent pour expulser les gaz brûlés et remplir le cylindre 1 de gaz frais, ces gaz frais ayant été comprimés par la descente du piston 2 et amenés par la tubulure 17, les lumières adéquates ayant été ouvertes ou fermées par la rotation du fourreau de distribution 12.Around 140 ° the intake lights 13, 21 open to expel the burnt gases and fill the cylinder 1 with fresh gas, these fresh gases having been compressed by the descent of the piston 2 and brought by the pipe 17, the appropriate lights having been opened or closed by the rotation of the dispensing sheath 12.

La descente du piston 8 a entre-temps provoqué le remplissage du cylindre auxiliaire 9 par des gaz frais qui sont disponibles pour être conduits dans le volume qui va être libéré dans le cylindre 1 par la remontée du piston 2.The descent of the piston 8 has meanwhile caused the filling of the auxiliary cylinder 9 with fresh gases which are available to be conducted into the volume which will be released in the cylinder 1 by the ascent of the piston 2.

Vers 190°, fermeture des lumières d'échappement 14;
   vers 210°, fermeture des lumières d'admission 13 par la rotation du fourreau cylindrique 12; la compression des gaz frais s'effectue dans la partie supérieure du cylindre et, à sa partie inférieure, sous le piston moteur 2, les gaz frais du cylindre auxiliaire sont poussés par la remontée du piston alimenteur 8, et seront ainsi disponibles pour le cycle suivant, les lumières adéquates ayant été ouvertes et fermées par la rotation du fourreau cylindrique.Around 190 °, closing of the exhaust lights 14;
around 210 °, closing of the intake ports 13 by the rotation of the cylindrical sheath 12; the fresh gases are compressed in the upper part of the cylinder and, in its lower part, under the engine piston 2, the fresh gases from the auxiliary cylinder are pushed by the ascent of the feed piston 8, and will thus be available for the cycle next, the appropriate lights having been opened and closed by the rotation of the cylindrical sheath.

Un prototype en cours de réalisation comporte huit lumières de chaque type. Il y a donc un tour du fourreau de distribution pour huit tours moteur, mais, suivant les réalisations futures, le nombre et les calages peuvent être autres.A prototype in progress includes eight lights of each type. So there is one turn of the distribution sleeve for eight engine turns, but, depending on future achievements, the number and settings may be different.

Le diamètre du piston alimenteur 8 sera de préférence sensiblement supérieur à celui du piston moteur 2 de manière à provoquer un gavage de la chambre d'explosion.The diameter of the feed piston 8 will preferably be substantially greater than that of the drive piston 2 so as to cause the explosion chamber to be force-fed.

Afin de diminuer le volume inférieur du cylindre 1, il sera avantageusement prévu un contre-piston 26 solidaire du bloc moteur, monté à la partie inférieure du cylindre sur la paroi de séparation 5 et déterminé pour occuper la quasi-totalité du volume interne du piston moteur 2 lorsqu'il est au point mort bas.In order to reduce the lower volume of the cylinder 1, a counter-piston 26 secured to the engine block will be advantageously provided, mounted at the lower part of the cylinder on the partition wall 5 and determined to occupy almost all of the internal volume of the piston. motor 2 when it is in bottom dead center.

Du fait que, grâce au cylindre auxiliaire 9, les gaz d'admission ne passent pas dans le carter 6, le graissage du moteur pourra être de type classique par pression, (pas de mélange d'huile dans le carburant).Because, thanks to the auxiliary cylinder 9, the intake gases do not pass into the casing 6, the lubrication of the engine may be of the conventional type by pressure, (no mixture of oil in the fuel).

Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires.The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims (7)

Moteur à explosion deux temps à crosse comportant un système de distribution à chemise rotative, destiné à améliorer le rendement des moteurs de ce type, et plus particulièrement les moteurs deux temps Diesel ou à injection d'essence, le cylindre (1) comportant des parois latérales (10, 11) doubles et concentriques entre lesquelles tourne ladite chemise rotative constituée d'un fourreau cylindrique (12) pourvu d'orifices d'alimentation (23) en gaz frais, de transfert (20), d'admission (21) et d'échappement (22) disposées de manière à contrôler l'ouverture de lumières correspondantes dudit cylindre,
   caractérisé en ce que le fourreau cylindrique (12) est entraîné en rotation de façon synchrone par l'arbre moteur grâce à un moyen de transmission approprié de telle manière qu'à chaque tour du vilebrequin, ledit fourreau tourne d'un angle égal au pas angulaire des lumières d'admission (13) et d'échappement (14).Two-stroke buttstock combustion engine comprising a distribution system with rotary jacket, intended to improve the efficiency of engines of this type, and more particularly two-stroke diesel or petrol injection engines, the cylinder (1) having walls lateral and concentric lateral (10, 11) between which rotates said rotary jacket consisting of a cylindrical sheath (12) provided with supply ports (23) for fresh gas, transfer (20), inlet (21) and exhaust (22) arranged so as to control the opening of corresponding lights of said cylinder,
characterized in that the cylindrical sleeve (12) is rotated synchronously by the drive shaft by means of an appropriate transmission means such that each revolution of the crankshaft, said sleeve turns at an angle equal to the pitch angle of the intake (13) and exhaust (14) lights. Moteur à explosion selon la revendication 1, se caractérisant par le fait qu'il comporte un piston alimenteur (8) entraîné par la tige de crosse (3) reliant le piston moteur (2) à la bielle (4) et coulissant dans un cylindre auxiliaire (9) aménagé dans le carter (6) du vilebrequin, ledit piston alimenteur étant agencé de manière à aspirer et comprimer les gaz frais, puis à assurer leur transfert dans le volume interne situé à l'arrière du piston moteur, d'où ils seront envoyés dans la chambre d'explosion.Internal combustion engine according to claim 1, characterized in that it comprises a feed piston (8) driven by the stick rod (3) connecting the driving piston (2) to the connecting rod (4) and sliding in a cylinder auxiliary (9) arranged in the crankshaft casing (6), said supply piston being arranged so as to draw in and compress the fresh gases, then to ensure their transfer into the internal volume situated at the rear of the engine piston, whence they will be sent to the explosion chamber. Moteur à explosion selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les lumières d'admission (13) débouchent dans un conduit périphérique d'admission (15) relié par une tubulure (17) avec le volume situé à l'arrière du piston moteur (2).Internal combustion engine according to any one of the preceding claims, characterized by the causes the intake ports (13) to open into a peripheral intake duct (15) connected by a tube (17) with the volume situated at the rear of the engine piston (2). Moteur à explosion selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les lumières d'admission (13) sont inclinées à la fois dans le sens axial et dans le sens radial du cylindre (1), de façon à imprimer aux gaz frais un mouvement circulaire dirigé vers la tête dudit cylindre.Internal combustion engine according to any one of the preceding claims, characterized in that the intake ports (13) are inclined both in the axial direction and in the radial direction of the cylinder (1), so as to print with fresh gases a circular movement directed towards the head of said cylinder. Moteur à explosion selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les orifices d'échappement (22) du fourreau cylindrique (12) sont décalés par rapport au autres orifices, de façon à ce que les lumières d'échappement (14) soient totalement ouvertes au moment où le piston moteur (2) les démasque.Internal combustion engine according to any one of the preceding claims, characterized in that the exhaust ports (22) of the cylindrical sleeve (12) are offset from the other ports, so that the exhaust ports (14) are fully open when the driving piston (2) unmasks them. Moteur à explosion selon la revendication 2, se caractérisant par le fait que des conduits (18) sont aménagés dans la paroi de séparation (5) située entre le cylindre (1) et le carter (6) contenant le vilebrequin pour permettre le transfert des gaz frais contenus dans le cylindre auxiliaire (9) vers l'espace situé à l'arrière du piston moteur (2), lesdits conduits (18) de transfert étant également reliés à l'arrivée d'air frais (19) contrôlée par les orifices d'alimentation (23) du fourreau cylindrique (12).Internal combustion engine according to claim 2, characterized in that conduits (18) are arranged in the partition wall (5) located between the cylinder (1) and the casing (6) containing the crankshaft to allow the transfer of fresh gas contained in the auxiliary cylinder (9) towards the space situated at the rear of the engine piston (2), said transfer conduits (18) also being connected to the supply of fresh air (19) controlled by the supply orifices (23) of the cylindrical sheath (12). Moteur à explosion selon l'une quelconque des revendications précédentes, se caractérisant par le fait qu'un contre-piston (26) solidaire du bloc moteur est monté à la partie inférieure du cylindre (1), ce contre-piston étant déterminé pour occuper la quasi-totalité du volume interne du piston moteur (2) lorsque celui-ci est au point mort bas.Internal combustion engine according to any one of the preceding claims, characterized in that a counter-piston (26) integral with the engine block is mounted on the lower part of the cylinder (1), this counter piston being determined to occupy almost the entire internal volume of the engine piston (2) when the latter is in bottom dead center.
EP97430009A 1996-04-03 1997-04-01 Two stroke internal combustion engine with crosshead and comprising rotary sleeve distribution Withdrawn EP0799978A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604425A FR2747154B1 (en) 1996-04-03 1996-04-03 TWO-STROKE EXPLOSION ENGINE HAVING A ROTARY SHIRT DISTRIBUTION SYSTEM
FR9604425 1996-04-03

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EP0799978A2 true EP0799978A2 (en) 1997-10-08
EP0799978A3 EP0799978A3 (en) 1998-01-07

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EP97430009A Withdrawn EP0799978A3 (en) 1996-04-03 1997-04-01 Two stroke internal combustion engine with crosshead and comprising rotary sleeve distribution

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EP (1) EP0799978A3 (en)
FR (1) FR2747154B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005044686A1 (en) * 2005-09-19 2007-04-05 Pelz, Peter Reciprocating piston engine has valve ring, inlet port, outlet port and overflow opening and are formed in such a manner that combustion chamber is formed between piston and upper barrier of the cylinder
WO2010151238A1 (en) * 2009-05-12 2010-12-29 Oescan Erg Rotary valve system-for internal combustion engines
DE102019122325A1 (en) * 2019-08-20 2021-02-25 Peter Pelz Reciprocating internal combustion engine with double crank drive and variable timing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR422270A (en) * 1910-09-07 1911-03-17 Diego Garcia Loynaz Valveless distribution device for gasoline engines
US1749542A (en) * 1926-06-14 1930-03-04 Mead Laurence Leigh Internal-combustion engine
US4185597A (en) * 1978-03-06 1980-01-29 Cinquegrani Vincent J Self-supercharging dual piston engine apparatus
DE4404121A1 (en) * 1993-02-23 1994-08-25 Stummer Wilfried The linear rotary cylinder engine
US5421293A (en) * 1993-07-10 1995-06-06 Mercedes-Benz Ag Port-controlled two-stroke internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728623A1 (en) * 1994-12-22 1996-06-28 Gay Henri DIRECT INJECTION VOLUMETRIC MOTOR

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR422270A (en) * 1910-09-07 1911-03-17 Diego Garcia Loynaz Valveless distribution device for gasoline engines
US1749542A (en) * 1926-06-14 1930-03-04 Mead Laurence Leigh Internal-combustion engine
US4185597A (en) * 1978-03-06 1980-01-29 Cinquegrani Vincent J Self-supercharging dual piston engine apparatus
DE4404121A1 (en) * 1993-02-23 1994-08-25 Stummer Wilfried The linear rotary cylinder engine
US5421293A (en) * 1993-07-10 1995-06-06 Mercedes-Benz Ag Port-controlled two-stroke internal combustion engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005044686A1 (en) * 2005-09-19 2007-04-05 Pelz, Peter Reciprocating piston engine has valve ring, inlet port, outlet port and overflow opening and are formed in such a manner that combustion chamber is formed between piston and upper barrier of the cylinder
WO2010151238A1 (en) * 2009-05-12 2010-12-29 Oescan Erg Rotary valve system-for internal combustion engines
CN102459828A (en) * 2009-05-12 2012-05-16 尔格·奥兹坎 Rotary valve system for internal combustion engines
CN102459828B (en) * 2009-05-12 2014-11-12 尔格·奥兹坎 Rotary valve system for internal combustion engines
DE102019122325A1 (en) * 2019-08-20 2021-02-25 Peter Pelz Reciprocating internal combustion engine with double crank drive and variable timing
DE102019122325B4 (en) * 2019-08-20 2021-05-27 Peter Pelz Reciprocating internal combustion engine with double crank drive and variable timing

Also Published As

Publication number Publication date
EP0799978A3 (en) 1998-01-07
FR2747154A1 (en) 1997-10-10
FR2747154B1 (en) 1998-05-15

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