EP0020806A1 - Three-stroke engine - Google Patents

Three-stroke engine Download PDF

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Publication number
EP0020806A1
EP0020806A1 EP79102183A EP79102183A EP0020806A1 EP 0020806 A1 EP0020806 A1 EP 0020806A1 EP 79102183 A EP79102183 A EP 79102183A EP 79102183 A EP79102183 A EP 79102183A EP 0020806 A1 EP0020806 A1 EP 0020806A1
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EP
European Patent Office
Prior art keywords
piston
gases
heat engine
engine according
sock
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.)
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Application number
EP79102183A
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German (de)
French (fr)
Inventor
Christian Vialette
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Individual
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Individual
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Publication date
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Priority to EP79102183A priority Critical patent/EP0020806A1/en
Priority to PCT/FR1980/000099 priority patent/WO1981000134A1/en
Publication of EP0020806A1 publication Critical patent/EP0020806A1/en
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • F02B25/16—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke the charge flowing upward essentially along cylinder wall opposite the inlet ports
    • 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
    • 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
    • F02B2075/026—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle three
    • 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
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to piston heat engines in which the ignition of gases is obtained by compression of these mixtures or by controlled ignition.
  • the main types of known internal combustion engines are based on 2 and 4 stroke cycles.
  • the second an ignition for two crankshaft turns reduces and limits its power torque, the number of valve parts, return springs, rocker arms, camshaft and its transmission. All these organs absorb a certain energy and require a large quantity of lubricants necessary to ensure their lubrication, leading to an increase in weight and bulk. In the current state of things, we know that these represent many disadvantages arising on the one hand from waste and their frequent maintenance, losses due to friction.
  • the motor according to the present invention makes it possible to avoid these drawbacks. It is indeed possible to operate it without mixtures, without camshafts, without valves, without rockers, without return springs, it has a gain in maintenance, weight and space. As the number of components is reduced, the structural requirements are considerably reduced with a corresponding reduction in construction costs and an increase in output. Lubrication is carried out by bath or by injection and is improved, the lubricant is separated from the upper part, it ensures better lubrication and autonomy, the greater the quantity.
  • the means is a piston having the identical external appearance of the models already in use, the skirt and the segments are arranged in the same way. It has this particularity of having in its center a guide, this last slides inside the bore of the sock, in fact that eliminates the pitching which occurs with ordinary pistons, the sliding is done with a perfect linearity , limiting excessively rapid wear, the piston pin is located at the end of the bottom of the guide so that the linkage is as short as possible, saving space, limited by the sock.
  • the engine can have any shape and includes a crankcase 16 supporting the crankshaft 15 and comprising a cylinder head 1, a cylinder 2 and a sock 9, a piston 3 moves alternately according to angular displacements of the crankshaft connected to the piston by a connecting rod 14.
  • This engine is combined with a device which allows it to increase its power operating in a synchronized manner (with the rotation of the engine).
  • the sock 9 in FIG. 2 comprises a leg 11 with shoulder for centering the cylinder 1 q , at the end of the top of the bore comes a segment 4 serving as a seal.
  • the shape of the piston 3 may be various, it is remarkable in that it has a skirt 6, to which comes the segments 8 the number in is unlimited, in its center has a guide 5 to use as support for the axis 7, the latter possibly being screwed onto the piston head or molded together.
  • the cycle represented by FIG. 5 breaks down: first 1/2 time the piston rises until reaching the top dead center admission to cold room 20 the gases penetrate inside thanks to an orifice 17, second 1 / 2 stroke the piston descends, when it falls there is a vacuum in said chamber allowing the third 1/2 time bottom dead center to discharge the gases into the hot chamber 21 using a transfer 18, fourth 1 / 2 stroke the piston goes up compression, fifth 1/2 time relaxation, sixth 1/2 time exhaust of gases through orifice 19.
  • the engine can operate on petrol, diesel or fuel oil, the ignition of gases is obtained in several forms: controlled ignition, by compression of the gases until reaching the self-ignition temperature, pressure ignition controlled described in the patent "France” n ° 2 328 843.
  • the cylinders can be arranged in L, H, X, V, stars.

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

Abstract

Thermal engine wherein the firing of gases is provided by controlled ignition, by compression up to the self ignition temperature, by compression under controlled pressure comprising a head-cylinder, a cylinder and a crank-case of the same type as the two-stroke engine. Not requiring any mixture, the suction gas and the lubrication oil are separated at the lower end of the cylinder (2) by a sock (9), said sock providing for the sealing between the driving part and the upper part. The piston (3) has an outer appearance similar to that of current models; it has at the center thereof a guide of a smaller diameter than the skirt (6), and slides inside the bore of said sock (9). During one cycle, the reciprocating motion modifies the volumetric mass of the cylinder (2), producing a suction allowing the induction gases to enter into the cylinder (2) through the cold chamber (20), during the downward motion of the piston (3) a partial vacuum occurs and the gases are discharged into the hot chamber (21), said gases being burnt in the same way as in the two-stroke engine. It runs with the usual fuels such as: petrol, diesel, fuel-oil, etc...

Description

L'invention concerne les moteurs thermiques à piston dans lesquels l'inflammation des gaz est obtenue par compression de ces mélanges ou par allumage commandé.The invention relates to piston heat engines in which the ignition of gases is obtained by compression of these mixtures or by controlled ignition.

Les principaux types de moteurs à combustion internes connus sont basés sur les cycles 2 et 4 temps. Le premier utilisant un mélange servant à la fois de charge et de lubrifiant des couples vilbrequin, bielle, piston, ce qui implique un lavement, entrainant une usure beaucoup plus rapide, cela provoque un échauffement accru ; l'huile utiliser dans le mélange brûle incomplètement d'ou un accroissement d'engrassement réduisant son autonomie. Le second un allumage pour deux tours de vilbrequin réduit et limite son couple de puissance, le nombre de pièces soupapes, ressorts de rappel, culbuteurs, arbre à cames et sa transmission. Tous ces organes absorbent une certaine énergie et demandent une grosse quantités de lubrifiants nécessaires pour assuraient leurs lubrifications, conduisant à une augmentation de poid et d'encombrement. En l'état actuel des choses, on sait que ces derniers représentent de nombreux désavantages provenant d'une part aux gaspillage et de leurs entretients fréquents, les pertes dus aux frottements.The main types of known internal combustion engines are based on 2 and 4 stroke cycles. The first using a mixture serving both as a filler and as a lubricant for the crankshaft, connecting rod and piston couples, which involves an enema, causing much faster wear, this causes increased heating; the oil used in the mixture burns incompletely or an increase in clogging reducing its autonomy. The second an ignition for two crankshaft turns reduces and limits its power torque, the number of valve parts, return springs, rocker arms, camshaft and its transmission. All these organs absorb a certain energy and require a large quantity of lubricants necessary to ensure their lubrication, leading to an increase in weight and bulk. In the current state of things, we know that these represent many disadvantages arising on the one hand from waste and their frequent maintenance, losses due to friction.

Le moteur selon la présente invention permet d'éviter ces inconvénients. Celui-ci en effet il est possible de le faire fonctionner sans mélanges, sans arbres à cames, sans soupapes, sans culbuteurs, sans ressorts de rappel, il a un gain d'entretient, de poid et d'encombrement. Le nombre d'organes étant réduit, les exigences structurales sont considérablement diminuer avec une rédùction correspondante des coûts de construction et une augmentation de rendement. La lubrification s'effectue par bain ou par injection et se trouve améliorer, le lubrifiant est séparé de la partie supérieur il assure un meilleur graissage et une autonomie d'autant plus grande que la quantité en est inférieur.The motor according to the present invention makes it possible to avoid these drawbacks. It is indeed possible to operate it without mixtures, without camshafts, without valves, without rockers, without return springs, it has a gain in maintenance, weight and space. As the number of components is reduced, the structural requirements are considerably reduced with a corresponding reduction in construction costs and an increase in output. Lubrication is carried out by bath or by injection and is improved, the lubricant is separated from the upper part, it ensures better lubrication and autonomy, the greater the quantity.

Les avantages obtenue grâce à cette invention consistent essentiellement en ceci que les pièces, par exemple culasse, cylindre sont de même types que le 2 temps. A l'intérieur de celui-ci à l'extrimité inférieur vient une chaussette ayant la forme d'un cylindre de diamètre plus petit que ce dernier de façon a laissé un passage pour la jupe du piston, se terminant à sa partie extrême du bas par un jambage de largeur extérieur du cylindre qui est maintenue entre celui-ci et le bloc-carter, dans laquelle 2 rainures longitudinales sont aménagés pour le passage de la bielle, sa parti supérieur un segment assure l'étanchéité. Ce moyen permet au piston lors du cycle de refouler les gaz dans la chambre chaude, assurant la séparation de ces derniers et du lubrifiant. Selon une autre partie, le moyen est un piston ayant l'aspect extérieur identique des modèles déjà utiliser, la jupe et les segments sont disposés de la mêmes façon. Il a cet particularité d'avoir en son centre un guide, ce dernier coulisse à l'intérieur de l'alésage de la chaussette, de fait cela supprime le tangage qui se produit avec des pistons ordinaires, le coulissement se fait avec une parfaite linarité, limitant une usure trop rapide, l'axe du piston se situe à l'extrème du bas du guide de façon que l'embiellage soit le plus court possible permet d'avoir un gain d'espace, limiter par la chaussette.The advantages obtained thanks to this invention consist essentially in that the parts, for example cylinder head, cylinder are of the same types as the 2 stroke. Inside this at the lower end comes a sock in the shape of a cylinder with a smaller diameter than the latter so has left a passage for the skirt of the piston, ending at its end at the bottom by a leg of external width of the cylinder which is maintained between the latter and the casing block, in which 2 longitudinal grooves are arranged for the passage of the connecting rod, its upper part a segment seals. This means allows the piston during the cycle to discharge the gases into the hot chamber, ensuring the separation of the latter and the lubricant. According to another part, the means is a piston having the identical external appearance of the models already in use, the skirt and the segments are arranged in the same way. It has this particularity of having in its center a guide, this last slides inside the bore of the sock, in fact that eliminates the pitching which occurs with ordinary pistons, the sliding is done with a perfect linearity , limiting excessively rapid wear, the piston pin is located at the end of the bottom of the guide so that the linkage is as short as possible, saving space, limited by the sock.

Dans ce qui suit, l'invention est exposée en détail à l'aide de dessins représentant seulement un mode d'exécution.

  • La figure 1 représente, une vue synoptique du moteur conforme à la présente invention ; la figure 2 représente, une vue sur la forme de la chaussette ; la figure 3 représente, une vue sur la conception du piston ;
  • la figure 4 représente, le diagramme R-R sur le rendement suivant les régimes des moteurs ; la figure 5 représente, le cycle de l'invention ainsi que son mode de fonctionnement.
In the following, the invention is explained in detail using drawings representing only one embodiment.
  • Figure 1 shows a block diagram of the engine according to the present invention; 2 shows a view on the shape of the sock; FIG. 3 represents a view of the design of the piston;
  • FIG. 4 represents, the RR diagram on the efficiency according to the engine speeds; FIG. 5 represents the cycle of the invention as well as its mode of operation.

La compréhension de la description nécessite l'explication du diagramme R-R représenté par la figure 4. Les courbes illustre les différents cycles, montrant les régimes et le rendement des moteurs. Le diagramme A typique au 4 temps, montre sa faible puissance aux vitesses peu élevée. Le diagramme B typique au 2 temps, montre une meilleure puissance aux différents régimes, mais son rendement demeure faible. Le diagramme C selon la présente invention, montre une puissance et un rendement supérieur aux précédents.Understanding the description requires an explanation of the R-R diagram shown in Figure 4. The curves illustrate the different cycles, showing the engine speeds and efficiency. The typical 4-stroke diagram A shows its low power at low speeds. The typical 2-stroke diagram B shows better power at different speeds, but its efficiency remains low. Diagram C according to the present invention shows a power and a yield higher than the previous ones.

En se repportant à la figure 1 on voit que le moteur peut avoir une forme quelconque et comporte un bloc-carter 16 supportant le vilbrequin 15 et comportant une culasse 1, un cylindre 2 et une chaussette 9, un piston 3 se déplace alternativement suivant les déplacements angulaires du vilbrequin relié au piston par une bielle 14. Ce moteur est combiné à un dispositif qui lui permet d'accroître sa puissance opérant de façon synchronisé (avec la rotation du moteur). Pour un mode d'exécution préféré de l'invention, la chaussette 9 figure 2 comporte un jambage 11 avec épaulement pour le centrage du cylindre 1q, à l'extrême du haut de l'alésage vient un segment 4 servant de joint d'étanchéité, au bas du cylindre, 2 rainures 13/longitudinales sont disposés de façon a laissé un passage pour la bielle 14. Dans la présente invention, la forme du piston 3 figure 3 peut-être divers, il est remarquable en se qu'il comporte une jupe 6, à laquelle vient les segments 8 le nombre en est illimités, en son centre possède un guide 5 utiliser comme support de l'axe 7, ce dernier pouvant-être vissé sur la tête du piston ou moulés ensemblent.Referring to Figure 1 we see that the engine can have any shape and includes a crankcase 16 supporting the crankshaft 15 and comprising a cylinder head 1, a cylinder 2 and a sock 9, a piston 3 moves alternately according to angular displacements of the crankshaft connected to the piston by a connecting rod 14. This engine is combined with a device which allows it to increase its power operating in a synchronized manner (with the rotation of the engine). For a preferred embodiment of the invention, the sock 9 in FIG. 2 comprises a leg 11 with shoulder for centering the cylinder 1 q , at the end of the top of the bore comes a segment 4 serving as a seal. sealing, at the bottom of the cylinder, 2 grooves 13 / longitudinal are arranged so has left a passage for the connecting rod 14. In the present invention, the shape of the piston 3 may be various, it is remarkable in that it has a skirt 6, to which comes the segments 8 the number in is unlimited, in its center has a guide 5 to use as support for the axis 7, the latter possibly being screwed onto the piston head or molded together.

Le cycle représenté par la figure 5 suivant l'invention se décompose : premier 1/2 temps le piston monte jusqu'a atteindre le point mort haut admission en chambre froide 20 les gaz pénétrent à l'intérieur grâce à un orifice 17, deuxième 1/2 temps le piston descend, lors de sa chute il se produit une dépression dans ladite chambre permettant au troisième 1/2 temps point mort bas de refouler les gaz dans la chambre chaude 21 à l'aide d'un transfert 18, quatrième 1/2 temps le piston remonte compression, cinquième 1/2 temps détente, sixième 1/2 temps échappement des gaz par l'orifice 19. La décomposition du cycle 3 temps, une explosion par tours de vilbrequin, produit simultanéments compression et admission en 1er temps, détente et dépression en 2ème temps, échappement et admission en chambre chaude 21 en 3ème temps.The cycle represented by FIG. 5 according to the invention breaks down: first 1/2 time the piston rises until reaching the top dead center admission to cold room 20 the gases penetrate inside thanks to an orifice 17, second 1 / 2 stroke the piston descends, when it falls there is a vacuum in said chamber allowing the third 1/2 time bottom dead center to discharge the gases into the hot chamber 21 using a transfer 18, fourth 1 / 2 stroke the piston goes up compression, fifth 1/2 time relaxation, sixth 1/2 time exhaust of gases through orifice 19. The decomposition of the 3 stroke cycle, an explosion by crankshaft turns, simultaneously produces compression and 1st intake time, relaxation and depression in 2nd time, exhaust and admission to hot room 21 in 3rd time.

Le moteur, peut fonctionner avec de l'essence, du gazoil ou du fuel, l'inflammation des gaz est obtenue sous plusieurs formes : allumage commandé, par compression des gaz jusqu'a atteindre la température d'auto-allumage, allumage sous pression contrôlé décrit dans le brevet "France" n° 2 328 843. Les cylindre peuvent-être disposés en L, H, X, V, étoiles.The engine can operate on petrol, diesel or fuel oil, the ignition of gases is obtained in several forms: controlled ignition, by compression of the gases until reaching the self-ignition temperature, pressure ignition controlled described in the patent "France" n ° 2 328 843. The cylinders can be arranged in L, H, X, V, stars.

Claims (11)

Revendication de brevet 1. Moteur thermique dans lequel l'inflammation des gaz est obtenue : par allumage commandé, par compression jusqu'a atteindre la température d'auto- allumage, par compression sous pression contrôlé, le piston (3) se déplace alternativement dans un cylindre (2) au moyen d'une chaussette (9) fixe qui assure l'étanchéité entre la partie motrice et la partie supérieur, effectue un travail par l'intermédiaire de la détente d'une combustion d'essence, de gazoil ou de fuel, comprenant : un couplage axe du moteur-piston qui produit le mouvement alternatif du piston dans le couple chaussette-cylindre, caractérisé par le fait que le piston (3) motifie le volume de la chambre froide (20) créant une aspiration lorsqu'il atteind le point mort haut, les gaz d'admission pénétrent dans la ladite chambre par un orifice (17), lors de sa descende produit une dépression permettant au gaz d'être refouler au moyen d'un transfert (18) dans la chambre chaude (21), le piston remonte les gaz sont compressés, le piston est au point mort haut, avant qu'il amorce sa chute détente, le piston redescend au point mort bas échappement par l'orifice (19).Patent claim 1. Heat engine in which the ignition of gases is obtained: by controlled ignition, by compression until reaching the self-ignition temperature, by compression under controlled pressure, the piston (3) moves alternately in a cylinder (2) by means of a fixed sock (9) which seals between the driving part and the upper part, performs work by means of the expansion of a combustion of petrol, diesel or of fuel, comprising: an axis coupling of the engine-piston which produces the reciprocating movement of the piston in the sock-cylinder pair, characterized in that the piston (3) motivates the volume of the cold room (20) creating a suction when '' it reaches the top dead center, the inlet gases enter the said chamber through an orifice (17), when it descends produces a vacuum allowing the gas to be discharged by means of a transfer (18) in the hot chamber (21), the piston rises gases are compressed, the piston is in top dead center, before it begins its trigger fall, the piston descends to bottom dead center exhaust through the orifice (19). 2. Moteur thermique selon 1, les gaz d'admission pénétrent dans la chambre froide (20) par un orifice (17).2. Heat engine according to 1, the intake gases enter the cold room (20) through an orifice (17). 3. Moteur thermique selon 1, les gaz emmagasinés dans la ladite chambre sont précompressés par le piston lors de sa descende.3. Heat engine according to 1, the gases stored in said chamber are precompressed by the piston when it descends. 4. Moteur thermique selon 1, les gaz de la dudit chambre sont expulsés dans la chambre chaude (21) au moyen d'un transfert (18).4. Heat engine according to 1, the gases from the said chamber are expelled into the hot chamber (21) by means of a transfer (18). 5. Moteur thermique selon 1, le piston remonte les gaz sont recompressés jusqu'au point critique de l'allumage.5. Heat engine according to 1, the piston goes up the gases are recompressed to the critical point of ignition. 6. Moteur thermique selon 1, un travail est effectué au moyen d'une détente combustion d'un carburant.6. Heat engine according to 1, work is carried out by means of a fuel combustion expansion. 7. Moteur thermique selon 1, les gaz brûlés sont évacués au moyen d'un orifice (19) d'échappement.7. Heat engine according to 1, the burnt gases are evacuated by means of an exhaust orifice (19). 8. Moteur thermique selon 1, dans lequel le mouvement alternatif du piston motifie le volume de la chambre froide (20), proportionnant le stockage volumétrique des gaz.8. Heat engine according to 1, in which the reciprocating movement of the piston motivates the volume of the cold room (20), proportioning the volumetric storage of the gases. 9. Moteur thermique selon 1, comportant une chaussette (9) qui assure l'homogénéité de la partie motrice et de la chambre (20).9. A heat engine according to 1, comprising a sock (9) which ensures the homogeneity of the driving part and the chamber (20). 10. Moteur thermique selon 1, comprend un piston (3) munit en son centre d'un guide (5), lequel vient dans l'alésage de la chaussette ainsi formés il rend étanche la partie supérieur et la partie motrice.10. A heat engine according to 1, comprises a piston (3) provided in its center with a guide (5), which comes into the bore of the sock thus formed, it seals the upper part and the driving part. 11. Moteur thermique selon 1, fonctionne avec de divers carburant, essence, fuel, gazoil, solvant, ...etc...11. Heat engine according to 1, works with various fuels, petrol, fuel, diesel, solvent, ... etc ...
EP79102183A 1979-06-29 1979-06-29 Three-stroke engine Withdrawn EP0020806A1 (en)

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Application Number Priority Date Filing Date Title
EP79102183A EP0020806A1 (en) 1979-06-29 1979-06-29 Three-stroke engine
PCT/FR1980/000099 WO1981000134A1 (en) 1979-06-29 1980-06-24 3 stroke engine

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EP79102183A EP0020806A1 (en) 1979-06-29 1979-06-29 Three-stroke engine

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EP0020806A1 true EP0020806A1 (en) 1981-01-07

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0337768A2 (en) * 1988-04-14 1989-10-18 Robert John Tait An Internal combustion engine
US6684825B2 (en) * 2001-05-07 2004-02-03 Saddle Rock Technologies, Llc Rotary machine and thermal cycle
CN102777259A (en) * 2011-05-11 2012-11-14 刘景林 Environment-friendly energy-saving two-stroke engine
CN103452662A (en) * 2013-06-04 2013-12-18 刘景林 Environment-friendly energy-saving two-stroke opposed engine
WO2024072312A1 (en) * 2022-09-30 2024-04-04 Husqvarna Ab Crankcase scavenged two-stroke engine and handheld power tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH139275A (en) * 1929-04-15 1930-04-15 Sulzer Ag Two-stroke internal combustion engine.
US2189357A (en) * 1938-02-23 1940-02-06 Scott Motors Saltaire Ltd Scavenging of the cylinders of twostroke-cycle internal combustion engines
GB1359300A (en) * 1970-09-19 1974-07-10 Hooper B Two-stroke internal combustion engines

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE166392C (en) *
FR546972A (en) * 1921-10-18 1922-11-28 Improvements to internal combustion engines
DE659313C (en) * 1935-10-19 1938-04-30 Oswald Kuhnast Two-stroke internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH139275A (en) * 1929-04-15 1930-04-15 Sulzer Ag Two-stroke internal combustion engine.
US2189357A (en) * 1938-02-23 1940-02-06 Scott Motors Saltaire Ltd Scavenging of the cylinders of twostroke-cycle internal combustion engines
GB1359300A (en) * 1970-09-19 1974-07-10 Hooper B Two-stroke internal combustion engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0337768A2 (en) * 1988-04-14 1989-10-18 Robert John Tait An Internal combustion engine
EP0337768A3 (en) * 1988-04-14 1990-04-25 Robert John Tait An internal combustion engine
US6684825B2 (en) * 2001-05-07 2004-02-03 Saddle Rock Technologies, Llc Rotary machine and thermal cycle
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