EP3400372A1 - Moteur en étoile à deux temps - Google Patents

Moteur en étoile à deux temps

Info

Publication number
EP3400372A1
EP3400372A1 EP15791796.4A EP15791796A EP3400372A1 EP 3400372 A1 EP3400372 A1 EP 3400372A1 EP 15791796 A EP15791796 A EP 15791796A EP 3400372 A1 EP3400372 A1 EP 3400372A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
crankcase
crankshaft
inlet channel
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Withdrawn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
EP15791796.4A
Other languages
German (de)
English (en)
Inventor
Wojciech Gaj-Jablonski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAJ JABLONSKI WOJCIECH
Original Assignee
GAJ JABLONSKI WOJCIECH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAJ JABLONSKI WOJCIECH filed Critical GAJ JABLONSKI WOJCIECH
Publication of EP3400372A1 publication Critical patent/EP3400372A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
    • F01B1/062—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement the connection of the pistons with an actuating or actuated element being at the inner ends of the cylinders
    • 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
    • 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
    • F02B33/04—Engines with reciprocating-piston pumps; Engines with crankcase pumps with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • F02B75/222—Multi-cylinder engines with cylinders in V, fan, or star arrangement with cylinders in star arrangement
    • 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
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F01B9/026—Rigid connections between piston and rod; Oscillating pistons
    • 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 object of the invention is the two-stroke radial engine intended to be used in particular in vehicles with the propeller drive.
  • the two-stroke radial engine is known from the patent description US 1811625, in which pairs of interconnected cylinders are mounted radially on the crankcase toward the axis of the crankshaft, and they are covered with the mutual combustion head.
  • One of cylinders of each pair has the inlet opening of the fuel mixture located in the middle of its sidewall, which is attached to the mutual fuel supply line, whereas the second of cylinders of each pair has, also on its sidewall, the outlet exhaust opening, which is connected with the exhaust collector.
  • Pistons situated in cylinders are connected by oscillating connecting- rods with the crankshaft, and the crank throws, which belong to each pair of cylinders, have minor mutual angular displacements.
  • the piston in the cylinder, to which fuel is provided is slightly belated in its motion compared with the other piston in the cylinder considering the exhaust removal, which enables this piston to open the outlet exhaust opening prior to opening the inlet opening of the fuel mixture by the second piston of this pair and it also decreases pressure and improves the fuel supply.
  • workspaces of particular pistons are isolated from the crankcase and from each other by their own piston sealing in cylinders, which causes the lack of the reciprocal influence of cylinders units in the radial system.
  • this engine has not found any wider practical application owing to its probable exploitative disadvantages related to the fuel induction and the compression in the workspace of cylinders.
  • the two-stroke engine is commonly known, which has the head with the ignition plug put on the cylinder and in the cylinder wall there is the opening of the inlet channel, through which the fuel mixture is supplied from the carburetor system into the cylinder space below the piston and connected with it the crankcase space, and moreover the opening of the inlet channel situated higher in the cylinder wall which discharges exhaust fumes into the exhaust collector.
  • Both cylinder spaces, below and above the piston are connected by side vertical rinsing channels, which enable the fuel mixture to relocate from the space below the piston to the workspace above the piston in its reciprocating motion.
  • the piston in the known engine is connected with the help of the oscillating connecting-rod with the crank throw, located in the crankcase.
  • inlet channels and outlet channels are selected in such a way that these channels are alternately closed and opened with the use of the piston sidewall.
  • the fundamental disadvantage of this engine is the presence of the fuel mixture in the crankcase, which prevents it from oil flooding that is used to the lubrication of moving parts, and as a result it enforces the use of fuel which contains some oil.
  • work oil together with the fuel mixture gets to the workspace above the piston and largely it is expelled outside along with exhaust fumes. Due to this fact the known two-stroke engine turns out not to be ecological enough and given the obligatory principles it has limited application.
  • due to the lack of the separation between the crankcase space from the cylinder the engine is unsuitable in radial systems.
  • the radial engine according to the invention comprises at least three cylinders radially attached to the crankcase casing.
  • Each cylinder is closed from above with the head with the ignition plug located in it, whereas from below it is closed with the partition, which separates the cylinder space from the interior of the crankcase. Additionally, above the partition the inlet channel is led to the cylinder, whereas over it the outlet channel is led out of the cylinder.
  • Each cylinder has vertical rinsing channels, which connect its lower partition below the piston with the workspace above the piston. Apart from that, in the middle of the partition of each cylinder the linear slide bearing is embedded, which is equipped from below with the sealing element. Through the slide bearing the push rod is led, favorably in the form of the grinded shaft.
  • the upper end of the push rod is linked to the piston, while its lower end is linked in an oscillating manner to the articulated connecting-rod, situated in the crankcase.
  • the connecting-rod is linked to the crankshaft in an oscillating manner via the piston pin assigned to it in the intermediary disk, embedded on the crank throw of the crankshaft.
  • the injector in the head of each cylinder the injector is mounted, whereas the outlet of the fan assigned to it is favorably connected with the inlet channel of the cylinder.
  • the output of the carburetor assigned to it is connected with the inlet channel of the cylinder, and the outlet of the fan assigned to it is favorably connected with the carburetor entry.
  • the positive feature of the radial engine according to the invention is the use of elements of the two-stroke engine, which considerably simplify the construction of the whole radial engine.
  • One of advantages of the engine is the lowering of harmful combustion products expelled to the atmosphere. It is obtained as a consequence of the sealed partitions, which cut off cylinders spaces from one another and from the interior of the crankcase, which enables to separate the fuel and exhaust circulation from the lubrication system. Clean fuel and air without added lubricating oil is supplied to workspaces of cylinders, contrary to popular solutions of two-stroke engines which have been used so far. It contributes to the fact that expelled exhaust fumes do not contain any drops of lubricating oil.
  • the fig. 1 shows the radial engine with three cylinders and this is the version with the injector in the side section
  • the fig. 2 illustrates the engine cylinder unit with the injector in the side section together with the fan attached to the cylinder inlet channel in the schematic drawing
  • the fig. 3 - the same cylinder unit in the section on the plane perpendicular to the former depiction
  • the engine cylinder unit is shown without the injector in the side section together with the carburetor and the fan connected in series to the cylinder inlet channel in the schematic drawing.
  • the radial engine comprises three cylinders 2 radially fixed to the casing of the crankcase 1
  • Each cylinder 2 is closed from above with the head 3 with the ignition plug 4 situated in it, whereas from below it is closed with the sealed partition 5, which separates the internal cylinder 2 space from the interior of the crankcase 1
  • the inlet channel 6 is led to the cylinder 2
  • the outlet channel 7 is led out of the cylinder 2.
  • the reciprocal opening of the inlet channel 6 and the outlet channel 7 along the cylinder 2 wail is done in such a way that it ensures the alternate opening of one channel and closing the other by the side surface of the piston 8, situated in the cylinder 2, in its reciprocating motion.
  • Each cylinder 2 has vertical rinsing channels 9, which connect is lower space below the piston 8 with the workspace above this piston.
  • the linear slide bearing 10 is embedded, which is equipped from below with the sealing element 12.
  • the push rod 12 is led in the form of the grinded shaft.
  • the upper end of the push rod 12 is connected with the piston 8, whereas its lower end is connected with the articulated-type connecting- rod 13 in an oscillating manner, which is situated in the crankcase filled with lubricating oil.
  • the articulated connecting-rod 13 is connected by the other side with crankshaft 16 equipped with the counterweight 14 in an oscillating manner via the piston pin 16 assigned to it in the intermediary disk 17, embedded on the crank throw of the crankshaft 15.
  • the engine operation according to the invention is similar to the operation of the known two-stroke engine.
  • air is supplied from the fan W output to the carburetor G, from where after mixing with fuel it goes to the inlet channel 6.
  • each piston 8 transfers through push rods 2 attached to pistons onto articulated connecting- rods 13, located in the crankcase 1 filled with oil, which with the help of the intermediary disk 17 make the crankshaft 5 rotate.
  • the use of the fan W which initially compresses air has the purpose to improve the rinsing of cylinders 2 and, in the case when the engine is employed in aerial vehicles, it should increase the air supply to cylinders 2 if flights take place at higher altitudes.
  • the separate lubricating system is employed in order to lubricate piston and crank units of the engine, and this system is known from the four-stroke engines.

Landscapes

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

Abstract

L'invention concerne un moteur en étoile destiné à être utilisé en particulier dans des véhicules avec propulsion à hélice. Le moteur comprend trois cylindres (2) fixés au plan radial sur le boîtier du carter (1). Chaque cylindre (2) est fermé depuis le dessus avec la culasse (3) ayant la bougie d'allumage (4) située à l'intérieur, tandis que, depuis le dessous, il est fermé avec la cloison scellée (5). De plus, on trouve le canal d'entrée (6) amené vers le cylindre (2) et le canal de sortie (7) amené vers l'extérieur, ainsi que des canaux de rinçage (9). Au milieu de la cloison (5) de chaque cylindre (2), le palier lisse linéaire (10) est intégré, lequel est équipé des éléments d'étanchéité (12) depuis le dessous. Au travers du palier lisse (10), la tige de poussée (12) est menée sous la forme de l'arbre rôdé, dont l'extrémité supérieure est reliée au piston (8), tandis que son extrémité inférieure est reliée à la bielle articulée (13). La bielle articulée (13) est reliée au vilebrequin (15) équipé du contrepoids (14) par le biais de la broche de piston (16) qui lui est attribuée dans le disque intermédiaire (17), qui est intégré sur le coude de vilebrequin du vilebrequin (15). Dans la première variante de l'invention, dans la culasse (3) du cylindre (2), l'injecteur (18) est monté, tandis que dans la seconde variante, le carburateur (G) est relié au canal d'entrée (7) du cylindre (2), auquel le ventilateur (W) est relié.
EP15791796.4A 2015-09-21 2015-09-21 Moteur en étoile à deux temps Withdrawn EP3400372A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/PL2015/000144 WO2017052389A1 (fr) 2015-09-21 2015-09-21 Moteur en étoile à deux temps

Publications (1)

Publication Number Publication Date
EP3400372A1 true EP3400372A1 (fr) 2018-11-14

Family

ID=54478938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15791796.4A Withdrawn EP3400372A1 (fr) 2015-09-21 2015-09-21 Moteur en étoile à deux temps

Country Status (2)

Country Link
EP (1) EP3400372A1 (fr)
WO (1) WO2017052389A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191316116A (en) * 1913-07-12 1914-07-13 Joseph Gordon Florence Improvements in or relating to Internal Combustion Engines.
GB190173A (en) * 1921-12-12 1924-03-11 Eugene Henri Marie Emile Duran Improvements in four stroke cycle internal combustion engines for use in aircraft
US1811625A (en) 1928-12-28 1931-06-23 Galloway Engineering Company L Two cycle radial engine
DE4205663A1 (de) * 1992-02-25 1993-08-26 Peter Tontch Zweitakt-verbrennungsmotor
GB2279701B (en) * 1993-07-10 1996-10-16 Daimler Benz Ag Port-controlled two-stroke internal combustion engine
AUPO641097A0 (en) * 1997-04-24 1997-05-22 Mitchell, William Richard Compact internal combustion engine
DE202005014320U1 (de) * 2005-09-09 2005-12-29 Müller, Johannes 2-Takt-5-Zylinder-Sternmotor
PL407365A1 (pl) * 2014-03-01 2015-09-14 Wojciech Gaj-Jabłoński Silnik spalania wewnętrznego

Also Published As

Publication number Publication date
WO2017052389A1 (fr) 2017-03-30

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