EP0064726B1 - Moteur à combustion interne - Google Patents

Moteur à combustion interne Download PDF

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Publication number
EP0064726B1
EP0064726B1 EP82103923A EP82103923A EP0064726B1 EP 0064726 B1 EP0064726 B1 EP 0064726B1 EP 82103923 A EP82103923 A EP 82103923A EP 82103923 A EP82103923 A EP 82103923A EP 0064726 B1 EP0064726 B1 EP 0064726B1
Authority
EP
European Patent Office
Prior art keywords
piston
combustion engine
internal combustion
engine according
foot
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.)
Expired
Application number
EP82103923A
Other languages
German (de)
English (en)
Other versions
EP0064726A1 (fr
Inventor
Werner Arendt
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
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
Priority claimed from DE19813118566 external-priority patent/DE3118566C2/de
Priority claimed from DE19823208249 external-priority patent/DE3208249A1/de
Application filed by Individual filed Critical Individual
Priority to AT82103923T priority Critical patent/ATE14602T1/de
Publication of EP0064726A1 publication Critical patent/EP0064726A1/fr
Application granted granted Critical
Publication of EP0064726B1 publication Critical patent/EP0064726B1/fr
Expired 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
    • 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
    • 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
    • F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
    • F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
    • 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
    • F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • 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
    • F01B9/04—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft
    • F01B9/06—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces
    • F01B2009/061—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with rotary main shaft other than crankshaft the piston motion being transmitted by curved surfaces by cams
    • F01B2009/066—Tri-lobe cams

Definitions

  • the invention relates to an internal combustion engine with at least one reciprocating piston, in which rollers are mounted on the piston foot, which are immersed in control cams, which are formed in at least one control disk connected non-rotatably to an output shaft, and in which the output shaft is provided with a closed circumferential curve to which the Piston foot acts on a roller.
  • the counterbalanced radial piston motor has the disadvantage that its pistons can only perform a small piston stroke, which is determined by the radial difference between the highest cam positions and the lowest points of the cam valleys lying between the individual cams.
  • Another disadvantage is the staggered arrangement of the rollers on the piston foot intended for power transmission and for the forced control of the pistons, which requires the formation of separate control cams for the two roller sets and complicates the overall structure of the engine.
  • the invention has for its object to design an internal combustion engine of the type mentioned in such a way that it can be made structurally simpler and provides greater efficiency.
  • the circumferential curve has the shape of a narrow web with rounded ends and the control curve runs parallel to the circumferential curve and the rollers are arranged coaxially to the roller of the piston foot.
  • the same control curve shape for the roller provided for the power transmission to the narrow web forming the circumferential curve and for the rollers used for the positive control of the pistons which are important in the two-stroke engine design of the internal combustion engine for the starting area of the engine and in overrun operation of the engine, facilitate the manufacture of the Engine crucial.
  • a simple plug connection between the individual parts can be created in that the narrow web forming the circumferential curve can protrude on the face side into a corresponding recess in the control disks that can be pushed over the ends of the output shaft.
  • the narrow web forming the closed circumferential curve with its rounded ends has two straight longitudinal sides, on which the rollers are on their way from the top dead center of the piston, in which they are each located on one of the rounded ends of the web, towards the lower Move dead center and from bottom dead center back to top dead center.
  • the piston also has a large stroke, which is important for the efficiency of the internal combustion engine, because of the favorable relationship between the length of the web and the thickness of the web.
  • the internal combustion engine can have a plurality of cylinders distributed uniformly over the circumference of the shaft, that is to say in a star shape, without the shape of the closed circumferential curve, ie the shape of the narrow web with its rounded ends, having to be changed thereby.
  • An internal combustion engine designed according to the invention can also be built very compactly as a miniature motor and can be manufactured inexpensively.
  • a major advantage is that the internal combustion engine can be designed both as a two-stroke engine and as a four-stroke engine and is suitable for any fuel.
  • the pistons do not have to be arranged in a star shape in one plane, but could also be distributed over different parallel planes, in each of which a closed circumferential curve is formed.
  • FIG. 1 shows a cylinder body 10 provided on the outside with cooling fins 10.1, which is placed on a shaft housing 11.
  • the cylinder body 10 is closed at its outer end by a cylinder head 12 which has a central threaded bore 12.1 for inserting a spark plug.
  • the cylinder chamber 14 is closed by a cover 15 which is designed as a bearing body for a guide rod 18 connected to the piston 17 and has a central through-bore for this guide rod 18.
  • the guide rod 18 is connected to the piston 17 via a joint 16.
  • the guide rod 18 is provided with a ball-bearing roller 20, which is freely rotatable on a shaft 19 which extends between two fork arms 18.1 of the guide rod.
  • the guide rod 18 projects with its roller 20 through a lateral opening into the shaft housing 11 and bears against a circumferential curve section 25.1 of the output shaft 25.
  • the output shaft 25 is supported by ball bearings 26 in the end walls of the shaft housing 11, of which at least one end wall is designed as a cover which can be removed for installing the shaft and its associated parts.
  • the cylinder body 10 is connected to the shaft housing 11 in a manner not shown via an annular intermediate body 27 and rests with its cover 15 on this intermediate body 27.
  • the circumferential curve section 25.1 of the output shaft 25 of the internal combustion engine is a narrow web.
  • Circumferential curve section 25.1 and output shaft 25 are made from one piece.
  • identical control disks 21 are pushed onto the output shaft 25 in mirror image.
  • These control disks 21 are shown in section in FIG. 1 and in plan view in FIG. 3.
  • the control disks 21 have a central plug-in groove 22 which corresponds to the cross section of the circumferential curve section 25.1 of the output shaft 25 and into which the ends of the circumferential curve section 25.1 protrude as shown in FIG. 1 and create a positive driving connection.
  • a control groove 23 is incorporated into each control disk, which runs exactly parallel to the circumferential curve U (FIG. 2) of the circumferential curve section 25.1 and into which the ends of the shaft 19 of the roller 20 projecting beyond the fork arms 18.1 of the guide rod 18 protrude as drivers.
  • 19 rollers can be arranged on the ends of the shaft, which roll in the control groove 23.
  • a flywheel 24 is also arranged on the output shaft 25 and the output shaft 25 is provided with a pinion 28 on both ends projecting from the shaft housing 11.
  • the device for supplying the fuel and removing the exhaust gases is not shown in FIG. 1.
  • Fig. 4 provides information on this.
  • FIG. 4 shows the cylinder housing 10 'of an internal combustion engine designed as a two-stroke engine according to the invention.
  • the basic structure of the cylinder housing 10 ' is similar to that of the exemplary embodiment according to FIG. 1, which is why the same parts are designated with the same reference numbers, supplemented by an index line.
  • a spark plug 13 is screwed into the cylinder head 12 '.
  • the central through opening for the guide rod 18' of the piston 17 ' is provided with a lubricated slide bearing bush 30.
  • two rollers 20 ' are mounted on the shaft 19'.
  • the ends 19.1 of the shaft 19 ' are fitted with ball bearings 31 which plunge into the control grooves of the control disks, not shown.
  • An inlet slot 32 and an outlet slot 33 are machined into the cylinder wall.
  • the inlet slot 32 for the internal combustion engine feed opens into the lower half of the cylinder chamber 14 'as seen from the spark plug 13, while the outlet slot 33 for the combustion gases opens into the upper half of the cylinder chamber 14'.
  • overflow channels 34 are formed in the wall of the cylinder body 10 '.
  • the piston 17 ′ In the upper end position of the piston 17 ′ shown in FIG. 4, it closes the outlet slot 33 and completely clears the inlet slot 32. During the downward movement of the piston 17 ', the piston closes the inlet slot 32 and later first releases the outlet slot 33 and then then the overflow channels 34. After the combustion gases have flowed out through the outlet slot 33, the fresh gas sucked through the inlet slot 32 into the lower cylinder space and then pre-compressed can then flow into the upper cylinder space. When the piston 17 'moves upward, the overflow channels 34 are closed first and then the outlet slot 33, and a negative pressure is built up in the lower cylinder space. Shortly before reaching the upper end position of the piston 17 'shown in FIG. 4, the inlet slot 32 is released by the piston 17', so that fresh gas can flow into the lower cylinder space. The fresh gas flowing directly into the lower cylinder space advantageously cools the piston 17 'and the cylinder body 10'.

Claims (6)

1. Moteur à combustion interne comprenant au moins un piston, dans lequel le pied de tige de piston (18) s'appuie sur des rouleaux (31) plongeant dans des cames de commande (23) qui ont la forme d'au moins un disque de guidage (21) fixé solidairement à un arbre entraîné (25) et dans lequel l'arbre entraîné (25) est muni d'une partie active de came Fermée (U) sur laquelle le pied de tige de piston (18) agit par l'intermédiaire d'un galet (20), caractérisé en ce que la partie active de came (U) a la forme d'une barrette étroite (25.1) à extrémités arrondies, es les cames de commande (23) s'étendent parallèlement à la partie active de came (U), et les rouleaux (31) sont disposés coaxialement au galet (20) du pied de tige de piston (18).
2. Moteur à combustion interne conforme à la revendication 1, caractérisé en ce que la barrette étroite (25.1) formant la partie active de came (U) est logée, du côté frontal, dans un évidement correspondant (22) de chacun des disques de guidage (21) montés à glissement sur les extrémités de l'arbre entraîné (25).
3. Moteur à combustion interne conforme à l'une des revendications 1 ou 2, caractérisé en ce que chaque côté frontal des disques de guidage (21) orienté vers le pied de tige de piston (18) présente une surface de guidage latérale pour le pied de tige de piston (18).
4. Moteur à combustion interne conforme à l'une des revendications 1 à 3, caractérisé en ce que le pied de tige de piston (18) a la forme d'une bielle qui est guidée à l'intérieur d'un couvercle (15) isolant de l'extérieur l'enceinte du cylindre (14).
5. Moteur à combustion interne conforme à la revendication 4, caractérisé en ce qu'à l'intérieur du couvercle (15) est disposé un coussinet (30) graissé pour guider le pied de tige de piston (18) formant bielle.
6. Moteur à combustion interne conforme à l'une des revendications 1 à 5, caractérisé en ce que le cylindre (10) est muni, dans son enceinte (14) isolée de l'extérieur, d'au moins une fente d'admission (32) pouvant ëtre recouverte par tronçons par le piston (17') et aboutissant dans sa moitié arrière par rapport au point d'allumage, et d'au moins une fente d'échappement (33) pouvant être recouverte par tronçons par le piston (17') et aboutissant dans sa moitié avant par rapport au point d'allumage, ainsi que d'au moins un canal de trop-plein (34) partant de la moitié arrière et créant dans une région limitée de la course du piston une liaison entre l'enceinte du cylindre (14') se trouvant derrière le piston (17') et l'enceinte du cylindre se trouvant devant le piston (17').
EP82103923A 1981-05-11 1982-05-06 Moteur à combustion interne Expired EP0064726B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82103923T ATE14602T1 (de) 1981-05-11 1982-05-06 Brennkraftmotor.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3118566 1981-05-11
DE19813118566 DE3118566C2 (de) 1981-05-11 1981-05-11 Brennkraftmotor
DE19823208249 DE3208249A1 (de) 1982-03-08 1982-03-08 Brennkraftmotor
DE3208249 1982-03-08

Publications (2)

Publication Number Publication Date
EP0064726A1 EP0064726A1 (fr) 1982-11-17
EP0064726B1 true EP0064726B1 (fr) 1985-07-31

Family

ID=25793161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103923A Expired EP0064726B1 (fr) 1981-05-11 1982-05-06 Moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0064726B1 (fr)
DE (1) DE3265046D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088524A1 (fr) * 2001-04-27 2002-11-07 Maslen Des Moteur radial

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326294A1 (de) * 1983-07-21 1985-01-31 Heinz 7303 Neuhausen Adomeit Ein oder mehrstufige kolbenkraftmaschine mit kurvengesteuerter kolbenbewegung
WO1986006134A1 (fr) * 1985-04-15 1986-10-23 Tennyson Holdings Ltd. Machine a pistons a mouvement alternatif
DK156308C (da) * 1985-08-23 1989-12-11 N Proizv Lab Dvigateli Vat Gor Modulforbraendingsmotor
FR2651829A1 (fr) * 1989-09-08 1991-03-15 Innovations Atel Const Moteur a explosion sans embiellage ni vilebrequin du type cylindres en etoile.
GB9001413D0 (en) * 1990-01-22 1990-03-21 Galvin George F Internal combustion engine
FR2679604B1 (fr) * 1991-07-25 1993-10-22 Ateliers Const Innovations Moteur a explosion sans embiellage ni villebrequin du type cylindres en etoile.
JPH07504729A (ja) * 1991-12-05 1995-05-25 アドバンスト・テクノロジーズ・マシーン 改良された内燃機関
GB2278883A (en) * 1993-05-06 1994-12-14 Stephen William Owen Cam drive reciprocating piston engine.
AUPM521094A0 (en) * 1994-04-20 1994-05-12 Morris, Raymond Victor Internal combustion engine
IT1315603B1 (it) * 2000-02-29 2003-03-14 Fantuzzi Reggiane Spa Motore a combustione interna a funzionamento alternativo perfezionato
ITMO20010174A1 (it) * 2001-08-28 2003-02-28 Fantuzzi Reggiane Corp S A Motore a combustione interna a funzionamento alternativo perfezionato
AU2002249002B2 (en) * 2002-04-24 2007-08-30 Maslen, Desmond Jay Radial engine
DE102018123409A1 (de) * 2018-09-24 2020-03-26 Manfred Max Rapp Kolbenmaschine, modulares Baukastenystem für eine Kolbenmaschine sowie Verfahren zur Herstellung einer Kolbenmaschine
CN111594408B (zh) * 2020-05-12 2022-05-31 合肥通用机械研究院有限公司 一种凸轮式往复压缩机构
CN113700634B (zh) * 2021-09-18 2023-11-21 珠海格力节能环保制冷技术研究中心有限公司 一种凸轮曲轴机构及活塞式压缩机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB598583A (en) * 1946-03-06 1948-02-20 Gordon Tyrrell Thorn Improvements in or relating to cam mechanism for pistons reciprocating in cylinders
US3572209A (en) * 1967-11-28 1971-03-23 Hal F Aldridge Radial engine
NL6716626A (fr) * 1967-12-07 1969-06-10
DE2241498A1 (de) * 1972-08-23 1974-03-21 Lorenz Berbig Kolbenmaschine
CH598473A5 (fr) * 1976-01-05 1978-04-28 Fritz Biberhofer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088524A1 (fr) * 2001-04-27 2002-11-07 Maslen Des Moteur radial
US7137365B2 (en) 2001-04-27 2006-11-21 Desmond Jay Maslen Radial engine

Also Published As

Publication number Publication date
DE3265046D1 (en) 1985-09-05
EP0064726A1 (fr) 1982-11-17

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