EP0503842A1 - Brennkraftmaschine - Google Patents

Brennkraftmaschine Download PDF

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Publication number
EP0503842A1
EP0503842A1 EP92301896A EP92301896A EP0503842A1 EP 0503842 A1 EP0503842 A1 EP 0503842A1 EP 92301896 A EP92301896 A EP 92301896A EP 92301896 A EP92301896 A EP 92301896A EP 0503842 A1 EP0503842 A1 EP 0503842A1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
piston
cylinders
connecting rod
connecting rods
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Withdrawn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
EP92301896A
Other languages
English (en)
French (fr)
Inventor
Haim Kats
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.)
Israel Aircraft Industries Ltd
Original Assignee
Israel Aircraft Industries Ltd
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 Israel Aircraft Industries Ltd filed Critical Israel Aircraft Industries Ltd
Publication of EP0503842A1 publication Critical patent/EP0503842A1/de
Withdrawn legal-status Critical Current

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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
    • F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F01B7/02—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons
    • F01B7/04—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on same main shaft
    • F01B7/06—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on same main shaft using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa
    • 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
    • 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
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/243—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "boxer" type, e.g. all connecting rods attached to separate crankshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0058—Longitudinally or transversely separable crankcases
    • 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

Definitions

  • the present invention relates to piston-and-cylinder machines having at least one pair of co-axial cylinders on opposite sides of a crankshaft, a piston in each cylinder, and connecting rods connecting the pistons to eccentric portions of the crankshaft.
  • An engine according to the present invention is characterised in that one piston of the pair is connected to a first eccentric portion of the crankshaft by a first connecting rod and the other piston is connected by second and third connecting rods to second and third eccentric portions of the crankshaft which are located on opposite sides, axially, of the first eccentric portion and are both spaced 180° from the first eccentric portion.
  • the pistons are reciprocated in their respective cylinders in phase with each other.
  • the working chambers can fire alternately, with firing intervals of one revolution of the crankshaft.
  • each second and third connecting rod By making the weight of each second and third connecting rod to be half of that of the first connecting rod and with corresponding weight distributions, complete balancing of the engine can be obtained by the use of simple counter weights on the crankshaft.
  • a crankcase enclosing the connecting rods crankshaft and rotatably supporting the crankshaft is divided at a plane through the crankshaft axis perpendicular to the common axis of the two cylinders.
  • the engine shown in the drawings has a pair of coaxial opposed cylinders 1A and 1B on opposite sides of the crankshaft 2.
  • the pistons 3A and 3B are slidable in the cylinders 1A and 1B.
  • the piston 3A has a connecting rod 4A articulated to it, the big end of the connecting rod 4A having a bearing running on a crankpin 5 of the crankshaft 2.
  • the piston 3B is similarly connected by a pair of connecting rods 4B and 4C to two further crankpins 6 and 7 which are each disposed at 180° to the first crankpin 5.
  • the small ends of the connecting rods 4B and 4C are articulated to the piston 3B by means of a gudgeon pin 8B.
  • crankshaft 2 is rotatably mounted in bearings 9 and 10 in a crankcase which is divided at a vertical plane 11 into two crankcase halves 12A and 12B.
  • the plane 11 passes through the axis of the crankshaft 2 at right angles to the common axis of the two cylinders 1A and 1B.
  • Each cylinder is closed by a cylinder head 13A, 13B having twin inlet valves 14 and a single exhaust valve 15.
  • the valves 14 and 15 are operated in the normal manner by rockers such as 16, push rods 17, 18 and hydraulic self-adjusting tappets 19 and 20 engaging respective cam tracks 21 and 22 on cam shafts 23A and 23B, one for each cylinder.
  • Each cam shaft 23 carries a timing gear 24 meshing with a timing gear wheel 25 of half the diameter of that the gear wheel 24, mounted on an extension 26 of the crankshaft 2, this extension also carrying a further gear wheel 27, the driving an input gear 28 of an alternativeator.
  • An oil pump 29 has its jut shaft driven by a gear wheel 30 meshing with the camshaft wheel 23A and delivers pressurised oil in the normal manner to the crankshaft bearings through an oil filter 31.
  • Inlet air for the two cylinders is delivered from an intake duct 32 including a throttle 33 to ducts 34A and 34B supplying the respective inlet valves 14A and 14B.
  • the mass of the single connecting rod 4A is twice that of either of the connecting rods 4B or 4C.
  • the combined weight distribution of the two rods 4B and 4C along their lengths is the same as that of the single rod 4A.
  • the motion of the two pistons is equal and opposite at all positions of the crankshaft. Accordingly, complete mechanical balance is obtained by appropriate construction of counter weights 37 and 38 on the crankshaft 2.
  • the rear end of the crankcase is closed by a timing cover 39 housing bearings 40 for the cam shafts 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP92301896A 1991-03-08 1992-03-05 Brennkraftmaschine Withdrawn EP0503842A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919104900A GB9104900D0 (en) 1991-03-08 1991-03-08 Internal combustion engine
GB9104900 1991-03-08

Publications (1)

Publication Number Publication Date
EP0503842A1 true EP0503842A1 (de) 1992-09-16

Family

ID=10691212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92301896A Withdrawn EP0503842A1 (de) 1991-03-08 1992-03-05 Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP0503842A1 (de)
KR (1) KR920018327A (de)
GB (1) GB9104900D0 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0779422A1 (de) 1995-12-13 1997-06-18 Giuseppe Raoul Piccinini Hin- und Hergehende Maschine
WO2001090546A1 (fr) * 2000-05-22 2001-11-29 Igor Olegovich Kiriljuk Moteur a combustion interne de type plat
WO2001096721A1 (fr) * 2000-06-15 2001-12-20 Igor Olegovich Kiriljuk Moteur a combustion interne en opposition
GB2328476B (en) * 1997-08-20 2002-02-06 Decorule Ltd Reciprocatory engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR428845A (fr) * 1910-06-30 1911-09-08 Charles Gabbiel Rene Senemaud Moteur à explosions équilibré à deux cylindres opposés
GB191303349A (en) * 1913-02-10 1913-10-23 Charles Gabriel Rene Senemaud Balanced Internal Combustion Engine with Two Opposite Cylinders.
US2011804A (en) * 1930-08-25 1935-08-20 Continental Motors Corp Internal combustion engine
DE3424192A1 (de) * 1984-06-30 1986-01-09 Otto 7500 Karlsruhe Pulch jun. Hubkolbenmotor mit 2 oder 4 zylindern ohne freie massenkraefte und massenmomente

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR428845A (fr) * 1910-06-30 1911-09-08 Charles Gabbiel Rene Senemaud Moteur à explosions équilibré à deux cylindres opposés
GB191303349A (en) * 1913-02-10 1913-10-23 Charles Gabriel Rene Senemaud Balanced Internal Combustion Engine with Two Opposite Cylinders.
US2011804A (en) * 1930-08-25 1935-08-20 Continental Motors Corp Internal combustion engine
DE3424192A1 (de) * 1984-06-30 1986-01-09 Otto 7500 Karlsruhe Pulch jun. Hubkolbenmotor mit 2 oder 4 zylindern ohne freie massenkraefte und massenmomente

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0779422A1 (de) 1995-12-13 1997-06-18 Giuseppe Raoul Piccinini Hin- und Hergehende Maschine
EP1207287A1 (de) 1995-12-13 2002-05-22 Giuseppe Raoul Piccinini Brennkraftmaschine
GB2328476B (en) * 1997-08-20 2002-02-06 Decorule Ltd Reciprocatory engine
WO2001090546A1 (fr) * 2000-05-22 2001-11-29 Igor Olegovich Kiriljuk Moteur a combustion interne de type plat
WO2001096721A1 (fr) * 2000-06-15 2001-12-20 Igor Olegovich Kiriljuk Moteur a combustion interne en opposition

Also Published As

Publication number Publication date
KR920018327A (ko) 1992-10-21
GB9104900D0 (en) 1991-04-24

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