EP2108798A2 - Verbrennungsmotor mit aneinandergrenzenden oder entgegengesetzten Kolben für Gokarts, Motorräder, Kraftfahrzeuge, Seefahrt und Luftfahrt - Google Patents

Verbrennungsmotor mit aneinandergrenzenden oder entgegengesetzten Kolben für Gokarts, Motorräder, Kraftfahrzeuge, Seefahrt und Luftfahrt Download PDF

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Publication number
EP2108798A2
EP2108798A2 EP08010958A EP08010958A EP2108798A2 EP 2108798 A2 EP2108798 A2 EP 2108798A2 EP 08010958 A EP08010958 A EP 08010958A EP 08010958 A EP08010958 A EP 08010958A EP 2108798 A2 EP2108798 A2 EP 2108798A2
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EP
European Patent Office
Prior art keywords
engine
washer element
head
internal combustion
spacer washer
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Withdrawn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
EP08010958A
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English (en)
French (fr)
Other versions
EP2108798A3 (de
Inventor
Ernestino Marchesi
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2108798A2 publication Critical patent/EP2108798A2/de
Publication of EP2108798A3 publication Critical patent/EP2108798A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
    • 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
    • F01B7/14—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on different main shafts

Definitions

  • the present invention relates to an abutting or opposite piston internal combustion engine for go-kart, motorcycle, motor vehicle, nautical and aeronautical use.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing an internal combustion engine which has a much greater efficiency and power, together with a much .lower wear, than a conventional engine of a same displacement.
  • a main object of the invention is to provide such an engine which is adapted to safely and efficiently operate with a broad range of operating loads.
  • Another object of the invention is to provide such an engine which can operate both with a high efficiency and a low wear, both in a two stroke and in a four stroke configuration.
  • Yet another object of the present invention is to provide such an engine which can be quickly and easily assembled on and disassembled from kart, motorcycle, boat, airplane and other motor vehicle chassis assemblies, without requiring substantial modifications of said chassis assemblies.
  • Yet another object of the present invention is to provide such an internal combustion engine which, owing to its specifically designed construction, is very reliable and safe in operation.
  • an internal combustion engine particularly for karts, motorcycles, motorboats, airplanes and the like, comprising an engine body defining a combustion chamber therein, and being characterized in that said engine body comprises, in said combustion chamber, a first and second opposite pistons, said first and second opposite pistons being coupled to respective driving means, said first and second pistons being movable with respect to a middle portion of said chamber, where igniting spark plug means are arranged, said engine comprising moreover fuel feeding and gas discharging means.
  • the internal combustion engine according to the present invention which has been specifically designed for karts, motorcycles, motorboats, airplanes and motor vehicles in general, comprises an engine body defining in its inside a combustion chamber.
  • said engine body which has been generally indicated by the reference number 1, comprises, in a first embodiment thereof, a first half-body 2 and a second half-body 3 which, according to an important aspect of the invention, are conventional motorcycle or kart engine bodies, without their finned heads.
  • Said half-bodies 2 and 3 which are advantageously identical to one another, have respectively a bottom face, generally indicated by the reference numbers 4 and 5, and a top face, generally indicated by the reference numbers 6 and 7.
  • Said head-less half-bodies 2 and 3 are operatively coupled to one another by abutting and firmly coupling their head or top faces 6 and 7 which, as is known, are substantially of flat configuration and provided with a circular central bore, having a diameter substantially equal to that of the respective piston arranged inside the respective combustion chamber of each said half-body 2 and 3.
  • the two central bores will be so aligned as to cause their axes to be arranged one on the extension of the other.
  • the two head faces 6 and 7 may be coupled by a spacer ring-like element or washer 15, preferably made of a metal material.
  • said washer element 15 is provided with a throughgoing threaded hole for coupling a conventional igniting spark plug 16, which, through a conductor element 17, is connected to conventional ignition timing means, which have not been specifically shown.
  • the number of sparking plugs and threaded holes, formed through the washer element 15, can be any, depending on requirements.
  • the spacer washer or ring element 15 may be omitted, and the head faces 6 and 7 of the two half-bodies 2 and 3 can be abutted directly onto one another, by firmly coupling them.
  • the two half-bodies of the engine can be replaced by a single body defining a combustion chamber on a middle portion thereof will be defined recesses for housing spark plug means therein.
  • sprockets 18 and 19 are herein provided, and coupled by a coupling driving chain 20, with optional chain tension means, for coupling to the drive shaft, which will turn in a single direction.
  • the combustion chamber comprises two partial combustion chambers 22 and 23, therein are slidably housed corresponding pistons 24 and 25 having a piston body 26 and 27 and a piston head 28 and 29.
  • Said pistons are coupled, in a per se known manner, to a respective connecting rod 30 and 31.
  • Each connecting rod 30 and 31 has a first end portion 33 coupled to the related piston, and a second end portion 34 operatively coupled to the driveshaft.
  • the pistons 26 and 27 shown in figure 3 are arranged at their bottom dead center, whereas in figure 4 they are arranged at their top dead center.
  • the piston will substantially be arranged flush on the holes of the head faces of the motor bodies, that is said pistons have their crowns arranged near the chain supporting washer 15.
  • a four-stroke engine where, at the middle portion of the combustion chamber, are provided piston valves 40 and 41 which are operatively coupled to cams 43 and 44 in turn coupled by small shafts or spindles 45 and 46 which are driven by distributing or driving chains 50 and 51 which, as is shown in figure 7 , are coupled to respective drive shafts.
  • Figures 8 and 9 show a modified embodiment of the four-stroke engine, including the related valves.
  • said figures 8 and 9 show a modified embodiment of the inventive motor, characterized in that it is provided with valves 61 which are respectively driven by the cams 43 and 44.
  • This engine comprises sparking plugs 16, opposite pistons 28 and 29, coupled to connecting rods 30 and 31 which, at the other end portions thereof, are in turn coupled to drive shafts 34.
  • the subject engine may operate in a very reliable manner, with an efficiency much greater than that of a like engine of like displacement, with a minimum wear; moreover, it provides a high power which is transmitted to the driveshaft in a very even manner.
  • the subject engine which has been herein indicated by the reference number 1, is very suitable to be quickly and easily applied on a go-kart 60, since it has a small weight, together with a high power.
  • inventive engines can be also applied to any desired types of motor vehicle.
  • the used materials provided that they are compatible to the intended application, as well as the contingent size and shapes, can be any, according to requirements.
EP08010958A 2008-04-07 2008-06-17 Verbrennungsmotor mit aneinandergrenzenden oder entgegengesetzten Kolben für Gokarts, Motorräder, Kraftfahrzeuge, Seefahrt und Luftfahrt Withdrawn EP2108798A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20080597 ITMI20080597A1 (it) 2008-04-07 2008-04-07 Motore a combustione interna, particolarmente per kart, motociclette, autoveicoli in genere.

Publications (2)

Publication Number Publication Date
EP2108798A2 true EP2108798A2 (de) 2009-10-14
EP2108798A3 EP2108798A3 (de) 2010-04-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08010958A Withdrawn EP2108798A3 (de) 2008-04-07 2008-06-17 Verbrennungsmotor mit aneinandergrenzenden oder entgegengesetzten Kolben für Gokarts, Motorräder, Kraftfahrzeuge, Seefahrt und Luftfahrt

Country Status (2)

Country Link
EP (1) EP2108798A3 (de)
IT (1) ITMI20080597A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9771861B2 (en) 2014-09-09 2017-09-26 Avl Powertrain Engineering, Inc. Opposed piston two-stroke engine with thermal barrier
US10047976B2 (en) 2011-12-21 2018-08-14 Venus Systems Limited Centrifugal refrigerant vapour compressors
US10458323B2 (en) 2011-12-23 2019-10-29 Cox Powertrain Limited Internal combustion engines

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496725A (en) * 1937-06-01 1938-12-01 Frederick William Dixon Improvements in two-stroke cycle internal combustion engines with swash-plate driving-gear
FR889151A (fr) * 1941-07-07 1944-01-03 Moteur
GB1041852A (en) * 1962-03-16 1966-09-07 Bbc Brown Boveri & Cie Two-stroke internal combustion engine
DE9201648U1 (de) * 1992-02-11 1992-04-16 Fritsche, Walter, 8934 Grossaitingen, De
DE19722129A1 (de) * 1997-05-27 1998-12-03 Gwozdz Henryk Brennkraftmaschine mit zwei Kolben in einem Zylinder und zwei Kurbelwellen
DE19812800A1 (de) * 1998-03-16 1999-09-23 Dancho Zochev Donkov Gegenkolben-Brennkraftmaschine
US20050274332A1 (en) * 2004-06-10 2005-12-15 Lemke James U Two-cycle, opposed-piston internal combustion engine
WO2007121086A2 (en) * 2006-04-18 2007-10-25 Cleeves Engines Inc. An internal combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496725A (en) * 1937-06-01 1938-12-01 Frederick William Dixon Improvements in two-stroke cycle internal combustion engines with swash-plate driving-gear
FR889151A (fr) * 1941-07-07 1944-01-03 Moteur
GB1041852A (en) * 1962-03-16 1966-09-07 Bbc Brown Boveri & Cie Two-stroke internal combustion engine
DE9201648U1 (de) * 1992-02-11 1992-04-16 Fritsche, Walter, 8934 Grossaitingen, De
DE19722129A1 (de) * 1997-05-27 1998-12-03 Gwozdz Henryk Brennkraftmaschine mit zwei Kolben in einem Zylinder und zwei Kurbelwellen
DE19812800A1 (de) * 1998-03-16 1999-09-23 Dancho Zochev Donkov Gegenkolben-Brennkraftmaschine
US20050274332A1 (en) * 2004-06-10 2005-12-15 Lemke James U Two-cycle, opposed-piston internal combustion engine
WO2007121086A2 (en) * 2006-04-18 2007-10-25 Cleeves Engines Inc. An internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10047976B2 (en) 2011-12-21 2018-08-14 Venus Systems Limited Centrifugal refrigerant vapour compressors
US10458323B2 (en) 2011-12-23 2019-10-29 Cox Powertrain Limited Internal combustion engines
US9771861B2 (en) 2014-09-09 2017-09-26 Avl Powertrain Engineering, Inc. Opposed piston two-stroke engine with thermal barrier

Also Published As

Publication number Publication date
EP2108798A3 (de) 2010-04-21
ITMI20080597A1 (it) 2009-10-08

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