WO1993021426A1 - Moteur deux temps a combustion interne pourvu d'un dispositif d'aspiration du melange air-carburant - Google Patents

Moteur deux temps a combustion interne pourvu d'un dispositif d'aspiration du melange air-carburant Download PDF

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Publication number
WO1993021426A1
WO1993021426A1 PCT/CZ1993/000011 CZ9300011W WO9321426A1 WO 1993021426 A1 WO1993021426 A1 WO 1993021426A1 CZ 9300011 W CZ9300011 W CZ 9300011W WO 9321426 A1 WO9321426 A1 WO 9321426A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting rod
slide
bearing
working medium
internal combustion
Prior art date
Application number
PCT/CZ1993/000011
Other languages
German (de)
English (en)
Inventor
Josef Lecnar
Original Assignee
Josef Lecnar
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 Josef Lecnar filed Critical Josef Lecnar
Publication of WO1993021426A1 publication Critical patent/WO1993021426A1/fr

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Classifications

    • 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
    • F01L7/12—Rotary or oscillatory slide valve-gear or valve arrangements specially for two-stroke engines
    • 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
    • F01L11/00—Valve arrangements in working piston or piston-rod
    • 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
    • F01L5/20—Slide valve-gear or valve-arrangements specially for two-stroke engines
    • 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 invention relates to a two-stroke internal combustion piston engine with controlled suction of the working medium.
  • the known two-stroke internal combustion engines are equipped with the controlled input of the entry working medium.
  • the working medium which is the mixture of air and fuel, enters the crankcase and from there through the overflow channel into the engine cylinder.
  • the closing and opening of the suction and exhaust ducts can be carried out by the automatic valves or the slides, and their movement can be controlled most often by the crankshaft of the internal combustion engine.
  • the most widespread are the slide arrangement with the ratation movement, but which have the undesired high peripheral speeds. These high circumferential speeds are the cause of the increased friction losses of the locking elements.
  • the valve In order to eliminate the high friction losses of the rotary valve, the valve is used with the reversible movement (reversible), which uses the drive by the crankshaft of the internal combustion engine, which are better enough to control the closure and the opening of the flow cross section, but they are are very complicated and the large number of contain dynamic parts that are also subject to high wear.
  • Distribution (control) mechanism formed the reversible-movable slide connected to the connecting rod of the internal combustion engine, slidably mounted in the sliding seat by the cross slide bearing, shaped in the connecting rod shaft between the connecting rod bearing and the connecting rod eye, and its bearing pin rotatably bound to the part of the slide, in the internal combustion engine for the movement of the bearing pin in the rectilinear or circular path is generally stored transversely to the axis of the cylinder and the cross slide bearing is bound with its bearing pin in a fixed part.
  • the slide part can be elongated-flat-shaped or cylindrical-cylindrical-shaped like a piston and slidably supported in the guideways formed in the walls of the crankcase, generally mounted transversely or perpendicularly or obliquely to the axis of the cylinder, or the bearing pin of the cross slide bearing can be rotated in the opening of the flat-shaped sucker in the eccentric form with respect to this opening, with the opening for the pivoting mounting of the slide on the Parelle bolt with the axis of the crankshaft.
  • the guideway for the sliding mounting of the cross slide bearing in the connecting rod shaft can be arranged on the longitudinal attachment, can be formed on one side of the flat-shaped connecting rod shaft, or can be produced on the inner walls of the longitudinal opening of the connecting rod shaft.
  • the slide provides the closing surface, the closing of the mouth of the suction channel, the closing of the mouth of the suction channel, the closing of the mouth of the suction channel in the crankcase space can be done with the closing part for the exhaust duct closure can be connected.
  • the advantages of the two-stroke combustion piston engine according to the invention with controlled suction of the working medium consist in a simple construction, in the substantial reduction in the rotational and vibration mass of the control mechanism and in a simple and effective transmission of the movement from the connecting rod to the locking and opening elements.
  • a high speed of movement of the slide occurs during opening and closing, after which, conversely, the speeds are very low in the area of the full closure of the slide sealing surfaces.
  • the oscillating movement of the slide has a speed from zero to higher speeds, and the medium speed is very low and overflows with zero and standstill. This enables the crankcase to be effectively filled in a wide operating speed range, which enables the specific engine power to be increased.
  • the slider movement is only carried out in the most necessary length, which corresponds to the cross-section of the flow channel. The total path and the movement time of the slider is reduced. Every additional closing element can be tied on the slide and thus an earlier closure of the exhaust duct cross section than the overflow cross section and thus the pollutant content in the exhaust gases can be significantly reduced.
  • FIG. 2 shows an exemplary schematic arrangement of the two-stroke combustion piston engine with a pivotable flat-shaped slide.
  • Figure 3 shows an exemplary schematic arrangement according to Figure 1 in cross section.
  • Figure 4 shows an exemplary schematic mounting of the cross slide bearing on a longitudinal attachment of the connecting rod shaft of the connecting rod in cross section.
  • Figure 5 shows the bearing of the cross slide bearing in a longitudinally flat opening of the connecting rod shaft in cross section.
  • FIG. 1 shows the internal combustion engine 1 with the piston 5 supported by the piston pin 8 mounted in the piston pin eye 11 of the connecting rod 9, which connecting rod shaft 10 is created on the opposite side of a connecting rod eye 12, for mounting on the crank pin 13 of the crankshaft 14, which further the main pin 15 and the flywheels 16 are formed.
  • An overcurrent channel 6 is formed in the cylinder 3.
  • a longitudinally shaped opening 52 is formed, which is created with a two-sided sliding seat 21, in which a cross slide bearing 26 is slidably mounted with the bearing pin 27.
  • the bearing pin 27 can be made in one piece with the.
  • Buchschblager 26 can be formed or it can be rotatably mounted in the Buchschubager 26 with one of its bolt ends.
  • the bearing pin 27 of its second pin end rotatably mounted in the opening 30, which is formed in the parts 18, 19, the longitudinal flat-shaped or circular-cylindrical slide 17, mounted perpendicular to the axis of the cylinder 3, sliding in the guide tracks 31, 32, in the walls 33 , 34 of the crankcase 2 shaped.
  • the slide 17 is provided with a closure surface 20 which is intended for closing the mouth 22 of the intake duct 4 into the crankcase.
  • the slide 17 is on obtain the end of the bolt 23, provided for the engagement with the closing element 24, mounted on the bolt 25 in a swinging manner.
  • the free end 29 is ended with the closing surface 28 for closing the exhaust duct 7.
  • the connecting rod 9 is rotatably connected by the cross slide bearing 26 to the part 35 of the flat slide 38.
  • the flat slide 38 is rotatably mounted with its opening 46 on the bolt 63 which, according to the embodiment in FIG. 2, is coaxial with the main axis of the crankshaft 14.
  • the slider 38 is also made with the part 36; on which the closing surface 60 for closing the mouth 22 of the intake duct 4 is formed.
  • the slide 38 is further procured with the part 37, the attachment 39, for storage by the bolt 40 on the tie rod 41, mechanically connected by the bolt 42 to the closing element 43, to which the free end 44, with the closing surface 45 for closing the Exhaust duct 7 is provided.
  • the compartment-shaped slide 38 is mounted with its opening 46 on the bolt 63, and is formed on the sprue 64, which is made in one piece with the crankshaft 2.
  • the closing surface 60 can be created cheaply on the side wall of the slide 38.
  • Fig. 3 you can also see the storage of the cross slide bearing 26 through the bearing pin 27 in the slide 38.
  • Figure 4 the connecting rod shaft 10 shown, the connecting rod 9 is created with the longitudinal attachment 47, which has on its sides the guide surface 488 49 for storage, and the sliding guide of the fork 50, 51 of the cross slide bearing 26, which in the bearing pin 27 passing in the opening 30 of the part 35 is mounted.
  • the other version of the cross slide bearing is shown in Fig.
  • the function of the device is evident from FIG. 1.
  • the connecting rod 9 bends out, from the axis of the cylinder 3 and the movement of the cross slide bearing 26 via the bearing pin 27 pushes the slide 17 into motion sets, and through the closing surface 20, the mouth 22 of the intake duct 4 in the crankcase 2 is closed.
  • the mouth 22 of the intake duct 4 is completely closed and the slide 17 reaches the outermost position, in which its speed is zero and its direction changes.
  • the slide 17 moves in the other direction and the mouth 22 of the intake duct 4 closes again and when the connecting rod 9 passes through position in which the axis of the connecting rod 9 is in the axis of the cylinder 3 lies, the speed of movement of the slide 17 has the highest value and the opening of the intake duct runs fastest.
  • the slider. 17 reaches the outermost position in the position of the connecting rod 9 in the highest deflection from the axis of the cylinder 3 when the speed of the slide 17 has zero value and changes its direction again.
  • the mechanical connection of the slide 17 with the closing element 24, for the closing and opening of the exhaust duct 7, enables the same control of the flow cross-section of the exhaust f duct 7 and by means of the suitable transmission it can be achieved that it is first throttles from the cross section of the exhaust duct 7 and only afterwards the overflow duct 6 for the flow of the medium through the overflow from the crankcase 2.
  • the set-up function according to FIG. 2 is analogous to the fact that for storage with respect to the flat slide 38, rotatable on the bolt en 63, created in the walls of the crankcase 2, the bearing pin 28 moves, on the section of the circle in the transverse direction to the axis of the cylinder 3 by the Schwenggenge movement, whereby formed by the closing surface in part 36, opens, respectively.

Abstract

Le moteur à combustion interne (1) selon l'invention comporte, un piston (5), une bielle (9), un vilebrequin (14), et un mécanisme de commande dont fait partie un coulisseau à mouvement réversible (17) et relié avec la bielle (9), de façon qu'il puisse coulisser et tourner, par l'intermédiaire d'un mécanisme à coulisse (26), lui-même monté dans une coulisse (21), dans le corps de la bielle (9), entre le coussinet de bielle (12) et le pied de bielle (11), et relié à l'axe de palier (27) monté rotatif par rapport aux faces latérales (18, 19) du coulisseau (17). L'axe de palier (27) effectue son mouvement dans ledit moteur à combustion (1) en suivant une voie rectiligne transversale par rapport à l'axe théorique du cylindre (3). Le coulisseau (17), qui peut avoir une forme plate et allongée ou bien cylindrique comme le piston, peut être monté avec un ajustement glissant dans les voies de guidage (31, 32) pratiquées dans les parois (33, 34) du carter de vilebrequin (2), verticalement à l'axe théorique du cylindre (3), ou bien l'axe (27) du mécanisme à coulisse (26) peut être monté dans l'ouverture (30) de l'épaulement (35) pour former un support oscillant soutenant le coulisseau (38) de forme plate, de façon excentrée en fonction de la position de ladite ouverture (30) par rapport à l'ouverture (46) afin de créer un support oscillant pour le coulisseau (38) sur l'axe parallèle (63), parallèlement à l'axe de vilebrequin. La coulisse (21) peut être façonnée sur la saillie longitudinale (47) se trouvant sur un des côtés du corps (10) de la bielle (9) ou bien elle peut être façonnée dans les parois intérieures (61, 62) de l'ouverture longitudinale (52) pratiquée dans ledit corps (10) de la bielle (9). Le coulisseau (17) peut être relié avec l'élément de fermeture (43) servant à fermer le canal d'échappement (7).
PCT/CZ1993/000011 1992-04-14 1993-04-13 Moteur deux temps a combustion interne pourvu d'un dispositif d'aspiration du melange air-carburant WO1993021426A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS921130A CZ113092A3 (en) 1992-04-14 1992-04-14 Two-stroke internal combustion engine with controlled medium intake
CSPV1130-92 1992-04-14

Publications (1)

Publication Number Publication Date
WO1993021426A1 true WO1993021426A1 (fr) 1993-10-28

Family

ID=5344889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ1993/000011 WO1993021426A1 (fr) 1992-04-14 1993-04-13 Moteur deux temps a combustion interne pourvu d'un dispositif d'aspiration du melange air-carburant

Country Status (3)

Country Link
CZ (1) CZ113092A3 (fr)
SK (1) SK113092A3 (fr)
WO (1) WO1993021426A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288637A (en) * 1994-12-17 1995-10-25 Keith Charles Sugden Two-stroke engine piston containing a valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE368276A (fr) *
NL12006C (fr) *
BE377210A (fr) *
DE373757C (de) * 1921-03-12 1923-04-16 Paul H Weise Schiebersteuerung fuer Zweitaktverbrennungsmotoren mit doppeltem Auspuff
FR609216A (fr) * 1925-12-28 1926-08-11 Perfectionnements aux moteurs à deux temps

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE368276A (fr) *
NL12006C (fr) *
BE377210A (fr) *
DE373757C (de) * 1921-03-12 1923-04-16 Paul H Weise Schiebersteuerung fuer Zweitaktverbrennungsmotoren mit doppeltem Auspuff
FR609216A (fr) * 1925-12-28 1926-08-11 Perfectionnements aux moteurs à deux temps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288637A (en) * 1994-12-17 1995-10-25 Keith Charles Sugden Two-stroke engine piston containing a valve
GB2288637B (en) * 1994-12-17 1996-09-18 Keith Charles Sugden Improvements in two-stroke engines

Also Published As

Publication number Publication date
SK113092A3 (en) 1995-03-08
CZ113092A3 (en) 1993-11-17

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