FR2647503A1 - 4-Stroke internal combustion engine cylinder head with a single valve and rotary timing - Google Patents

4-Stroke internal combustion engine cylinder head with a single valve and rotary timing Download PDF

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Publication number
FR2647503A1
FR2647503A1 FR8907035A FR8907035A FR2647503A1 FR 2647503 A1 FR2647503 A1 FR 2647503A1 FR 8907035 A FR8907035 A FR 8907035A FR 8907035 A FR8907035 A FR 8907035A FR 2647503 A1 FR2647503 A1 FR 2647503A1
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France
Prior art keywords
cylinder head
valve
head according
cylinder
pusher
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Granted
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FR8907035A
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French (fr)
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FR2647503B1 (en
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CABUS PIERRE
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CABUS PIERRE
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Publication of FR2647503B1 publication Critical patent/FR2647503B1/en
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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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/44—Multiple-valve gear or arrangements, not provided for in preceding subgroups, e.g. with lift and different valves
    • F01L1/443—Multiple-valve gear or arrangements, not provided for in preceding subgroups, e.g. with lift and different valves comprising a lift valve and at least one rotary valve
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/10—Valve drive by means of crank-or eccentric-driven rods
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/28—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of coaxial valves; characterised by the provision of valves co-operating with both intake and exhaust ports
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The cylinder head is equipped with a single valve 1, the diameter of which is 3/4 of the bore of the engine cylinder. The valve is driven by an elastic system 3 consisting of a spring 4 placed in a closed cylindrical push rod 6 sliding on the valve stem 5 and connected by a connecting rod 2 to a small crankshaft 7. In the prechamber 8 there emerge ports 9 corresponding to ducts 12 hollowed from the cylinders of the rotary distributors 10 rotating inside the casing 11, spark plug locations 13 being provided at the bottom part of the cylinder head 16. The ports provide the arrival of fresh gases and the evacuation of burnt gases according to the cycle.

Description

La présente invention concerne une culasse de moteur à 4 temps t explosion et s combustion interne de type mono soupape k distribution rotative (figure 1 Planche 1/5).The present invention relates to a 4-stroke engine cylinder head and internal combustion type mono valve rotary distribution (Figure 1 Plate 1/5).

La technique actuelle reposant sur l'utilisation de culasse Multi-soupapes actionnées par arbre t came la culasse présentée (voir Planche 1/5) n'utilise qu'une soupape unique (1) par cylindre, implantée sur le fond de la culasse (16).The current technique based on the use of multi-valve cylinder head actuated camshaft presented (see Plate 1/5) uses only one valve (1) per cylinder, located on the bottom of the cylinder head ( 16).

Soupape (1) dont le diametre est égale au 3/4 de la valeur de l'alésage du cylindre.Valve (1) whose diameter is equal to 3/4 of the value of the cylinder bore.

Cette soupape unique (1) est entraînée par un biellette (2) reliée t elle par l'intermédiaire d'un système élastique (3) constitué d'un ressort (4) coulissant d'une part sur la tige de la soupape (5) et d'autre part i l'intérieur d'un poussoir cylindrique (6). Ce ressort est maintenu d'une part par le fond du poussoir et d'autre part par la coupelle et le jonc d'arret fixés sur la queue de soupape. Une plaque butoir démontable permettant le montage de l'ensemble ressort se trouve à la partie superieur du poussoir et est reliee par une biellette (2) a un petit vilebrequin (7). This single valve (1) is driven by a link (2) connected thereto via an elastic system (3) consisting of a spring (4) sliding on the one hand on the valve stem (5). ) and on the other hand i inside a cylindrical pusher (6). This spring is maintained on the one hand by the bottom of the pusher and on the other by the cup and the ring rod fixed on the valve stem. A removable bumper plate for mounting the spring assembly is located at the top of the pusher and is connected by a rod (2) to a small crankshaft (7).

La soupape elle-même est surplombée par une préchambre (8) servant alter- nativement au passage des gaz frais et des brûlés d'echappement.The valve itself is overhung by an antechamber (8) serving alternatively to the passage of fresh gases and exhaust burns.

Dans cette préchambre (8) débouchent des lumières (9) de formes carres assurant le passage des gaz frais d'un coté et la sortie des gaz d'échappement de l'autre ; ces lumières sot au nombre de 2.In this prechamber (8) open lights (9) of square shapes ensuring the passage of fresh gas on one side and the exhaust outlet of the other; these lights are 2 in number.

Elles sont commandées par deux distributeurs rotatifs (10) disposes de part et d'autre de la préchambre.They are controlled by two rotary distributors (10) disposed on either side of the prechamber.

Ils sont constitués chacun d'un carter cylindrique (11) en deux parties a l'interieur duquel tourne jointivement un cylindre (10) percé de conduits (12) de section carré de 3 i 4 cm de coté correspondant aux lumières d'un côté donnant sur la préchambre (8) et de l'autre sur l'extérieur vers- le carburateur ou le tuyau d'échappement. They each consist of a cylindrical casing (11) in two parts inside which rotates a cylinder (10) pierced by ducts (12) of square section of 3 i 4 cm side corresponding to the lights on one side leading to the prechamber (8) and on the outside to the carburetor or the exhaust pipe.

Ces conduits (1') sont perrés en oblique par rapport X l'axe du cylindre de telle façon qu'en cours de rotation les ouvetures des conduits se trouvent decalées assurant l'étanchéité.These ducts (1 ') are drilled obliquely with respect to the axis of the cylinder in such a way that, during rotation, the openings of the ducts are offset to ensure sealing.

L'étanchéité des cylindres des distributeurs est donc caractéristiquement réalisée par
1v) Un ajustage de la partie tournante (10) dans le carter (11) dit a frolement partie tournante supportée à chaque extrémité par des paliers ou des rculements. The tightness of the distributor cylinders is therefore characteristically achieved by
1v) An adjustment of the rotating part (10) in the housing (11) said a rotatably rotating part supported at each end by bearings or rupees.

') D'autre part du fait que les conduits de transfert des gaz ont des sorties et des entrées décalées par l'obliquité de leur position, on augmente l'étanchéité en décalant (18) de ici m/m supplémentaires la position des conduits d'un côté A par rapport au côté E (voir planche n 3/5, figure 3). On the other hand, since the gas transfer ducts have outlets and their inlets offset by the obliquity of their position, the sealing is increased by shifting (18) the position of the ducts by an additional m / m. from one side A to the E side (see Plate 3/5, Figure 3).

3 ) Il est prévu de monter dans I'intervalle constitué par cette marge supplémentaire des segments tl7) circulaires d'étanchéité au nombre de 2 par conduit placés dans des gorges tracées sur le cylindre tournant de part et d'autre des sorties des conduits (voir planche 3/5 figure 3) étant bien entendu que chacun des quatre cylindres d'un moteur est équipé de la mtme manière de façon que le mEme arbre distributeur assure la même fonction pour chacun, quelque soit sa destination admission ou échappement. 3) It is planned to fit in the interval constituted by this additional margin circular sealing segments 2 in number of 2 per ducts placed in grooves traced on the cylinder rotating on either side of the duct outlets ( see Plate 3/5 Figure 3) being understood that each of the four cylinders of a motor is equipped in the same way so that the same distributor shaft performs the same function for everyone, regardless of its destination or exhaust.

Le traçé des conduits de transfert étant établi en fonction du cycle (voir planche /5, figure 2) régissant l'ordre d'allumage des bougies (13), les distributeurs (10) fonctionnement en synchronisation avec le petit vilebrequin (7). Les emplacernents des bougies (13 > sont situés t la partie inférieure de la culasse, ils sont au nombre de deux et diamétralement opposés.The tracing of the transfer ducts being established according to the cycle (see plate / 5, Figure 2) governing the ignition order of the spark plugs (13), the distributors (10) operating in synchronism with the small crankshaft (7). The locations of the candles (13) are located at the bottom of the breech, they are two in number and diametrically opposed.

Four ce qui est du systerne élastique (3) reliant la soupape (1) au petit vilebrequin d'entraînement (7) il est caractérise par l'utilisation d'un ressort (4) fonctionnant en compression assurant l'étanchéite et la fermeture de la soupape (1) lors des temps dits de compression, puis explosion et détente.In the case of the elastic system (3) connecting the valve (1) to the small drive crankshaft (7) it is characterized by the use of a spring (4) operating in compression ensuring the sealing and the closing of the valve (1) during so-called compression times, then explosion and relaxation.

Le fonctionnement de l'ensemble élastique (voir planches 4/5 et 5/5) est celui-ci : lors de la rotation du petit vilebrequin (7) la soupape (1) étant en position maximum d'ouverture (ceci après la fin du temps d'échappement), le ressort (4) est å l'état de repos mais cependant en légère pression pour éviter les jeue (voir planche 4/5 Figure 4.The operation of the elastic assembly (see plates 4/5 and 5/5) is this: during the rotation of the small crankshaft (7) the valve (1) being in the maximum open position (this after the end the exhaust time), the spring (4) is in the resting state but nevertheless at a slight pressure to prevent play (see plate 4/5 Figure 4.

Au 1 1/4 de tour la soupape (1) rendue solidaire de la biellette (2) par le ressort (4) remonte et se ferme (planche 4/5 Figure
Au 2 1/4 de tour la biellette (2) continue son ascension la soupape (1) étant bloquee sur son siège (18) et comprime le ressort (4) å l'intérieur du tube poussoir (6) jusqu'au point mort haut du petit vilebrequin (7) assurant ainsi l'étanchéité dans le cylindre moteur (figure # planche 5/5).At 1 1/4 turn the valve (1) made integral with the link (2) by the spring (4) rises and closes (plate 4/5 Figure
At 2 1/4 turn the rod (2) continues its ascent the valve (1) being locked on its seat (18) and compresses the spring (4) inside the push tube (6) to the dead point top of the small crankshaft (7) thereby sealing the engine cylinder (Figure # 5/5 board).

Au' 1/4 de tour l'étanchéité continue d'être assurée par le ressort
Jusqu'au commencement du 4 1/4 de tour (voir figure 7 planche 5/5).At 1/4 turn the sealing continues to be ensured by the spring
Until the start of the 4 1/4 turn (see Figure 7 board 5/5).

Au 4 1/4 de tour < a ce moment) le ressort (4) a repris sa position de décompression et la queue de la soupape touche le fond du tube poussoir (6) contenant ledit ressort qui pousse alors vers le bas la soupape (1 ) qui s'ouvre et atteint son maximum d'ouverture des que le vilebrequin d'entra?nement (7) a atteint son point mort bas (figure 4 planche 4/5).  At 4 1/4 turn <at this time) the spring (4) has returned to its decompression position and the tail of the valve touches the bottom of the push tube (6) containing said spring which then pushes the valve downwards ( 1) which opens and reaches its maximum opening as the drive crankshaft (7) has reached its bottom dead point (Figure 4 Plate 4/5).

Le vilebrequin d'entraînement (7) est synchronisé avec le vilebrequin moteur de tel le façon que le point mort Las du 1 (7) corresponde au point mort haut du Z*, donc a l'ouverture mai de 1 soupape (1) et la fin du temps d'échappement. The drive crankshaft (7) is synchronized with the engine crankshaft such that the neutral position Las of 1 (7) corresponds to the top dead center of the Z *, therefore to the opening of 1 valve (1) and the end of the escape time.

Chaque rotation du vilebrequin d'entraînement correspondant à 2 rotations moteur afin d'assurer le cycle des 4 temps du moteur les éléments mobiles distributeurs (10) et et vilebrequin (7) sont reliés au vilebrequin moteur par l'entremise de pou ies crantées et d'une courroie crantée.Each rotation of the drive crankshaft corresponding to 2 engine rotations in order to ensure the 4-stroke cycle of the engine, the movable distributor elements (10) and and crankshaft (7) are connected to the engine crankshaft via notched lugs and a toothed belt.

Pour assurer le refroidissement des chambres d'eau (15 pi anche 1/5) sont prévues sur la culasse elle-même et les carters (11) des ditributeurs.To ensure the cooling of the water chambers (15 pi 1/5 reed) are provided on the cylinder head itself and the housings (11) ditributeurs.

Le graissage assurant le bon fonctionnement sera assuré sous pression dans le vilebrequin d'entratnement (7) et par gravité sur la tige de soupapesystème élastique et ditributeurs la culasse est constituée d'un bloc portant usiné l'emplacement de la soupape, son siège à la partie Inferieure, à la partie supérieure les Z demis carters de distributeur de part et d'autre, å la partie haute les supports de palier du petit vilebrequin (7) et les guides des poussoirs du système élastique de la soupape.The lubrication ensuring proper operation will be provided under pressure in the drive crankshaft (7) and by gravity on the valve stem elastic system and ditributeurs the breech consists of a block bearing machined the location of the valve, its seat to the lower part, at the upper part the Z half distributor housings on either side, å the upper part the bearing supports of the small crankshaft (7) and the push rod guides of the elastic system of the valve.

A la base de la culasse sont aménagés des emplacements, pour le montage des bougies (1:3) , les chambres d'eau sont creusés dans les espaces intercalaires (I5). At the base of the cylinder head are arranged locations for mounting the candles (1: 3), the water chambers are dug in the interspace (I5).

Claims (5)

REVENDICATIONS 1') Culasse de moteur 4 temps a explosion et a combustion interne mono soupape a distribution rotative caractérisé par l'utilisation d'une soupape unique (1) sur le fond de la culasse (16) et dont le diamètre est egale au /4 de l'alésage du cylindre moteur.1 ') Engine cylinder 4 times explosion and internal combustion single valve rotary distribution characterized by the use of a single valve (1) on the bottom of the cylinder head (16) and whose diameter is equal to / 4 of the cylinder bore. 2 ) Culasse selon la revendication 1 caractérisée par un entrainement de2) Cylinder head according to claim 1 characterized by a training of la soupape (1) par un systeme élastique (3) spécial intercalé entre la soupape (1) et la biellette (2) qu entraine un petit vilebrequin (7) le système élastique (3) est constitué par un poussoir de forme cylindrique the valve (1) by a special elastic system (3) interposed between the valve (1) and the rod (2) that causes a small crankshaft (7) the elastic system (3) is constituted by a cylindrical pusher (6) guidé, percé à la basé d'une ouverture ou coulisse la queue de la soupape (1) à l'interieur du poussoir se trouve un ressort (4) maintenu d'une part par le fond du poussoir (6) a la partie basse et de l 'autre par (6) guided, pierced at the base of an opening or slides the tail of the valve (1) inside the pusher is a spring (4) maintained on the one hand by the bottom of the pusher (6) a the lower part and the other by la coupelle et le jonc d'arrSt (4) bis fixés sur la queue de la-soupape the cup and the retaining ring (4) bis fixed on the tail of the valve A 1 a partie supérieur du poussoir se trouve une plaque butoir (6) bis démontable pour permettre le montage de I 'ensemble ressort (4) et éSale- ment la fixation par un axe de la biellette (2) le reliant au petit vilebrequin d'entraînement (7).At the upper part of the pusher there is a bumper plate (6) which can be dismounted to allow the assembly of the spring assembly (4) and the attachment by an axis of the connecting rod (2) connecting it to the small crankshaft. training (7). ) Culasse selon la revendication 1 caractérisée par I 'uti lisalon de 2 distributeurs rotatifs (10) constitués chacun d'une partie cylindrique perçée de conduits (12) de section carré de 3cm a 4 cm de côté, non perpendiculaire à l'axe avec décalage d'étanchéité (18). Ces distributeurs tournant a i' intérieur de carters (11) percés de lumières correspondant aux conduits des parties cylindriques tournantes.  ) Cylinder head according to claim 1, characterized by the use of 2 rotary distributors (10) each consisting of a cylindrical portion of perforated ducts (12) having a square cross-section of 3 cm to 4 cm, not perpendicular to the axis with sealing offset (18). These distributors rotating inside casings (11) pierced with lights corresponding to the ducts of the rotating cylindrical parts. 4*) Culasse selon la revendication 1 caractérisée par la présence de segments métalliques (17) situés dans l'intervalle de déclare d'étanchéité 4 *) Cylinder head according to claim 1 characterized by the presence of metal segments (17) located in the range of sealing declaration (1S) soit 2 segments par conduit.  (1S) is 2 segments per path. 5 ) Culasse selon la revendication 1 caractérisée par le fait que la partie cylindrique (10) constituant les distributeurs tourne a frolement et non en appui a l'intérieur des carters (11) composés de deux parties.5) Cylinder head according to claim 1 characterized in that the cylindrical portion (10) constituting the distributors rotates and not in contact with the interior of the housings (11) consisting of two parts. Claque derni-carter est percé de lumiéres (9) de section carré débouchant un coté dans la préchambre (8) coiffant la soupape (1) et de I autre vers l'extérieur, soit au carburateur soit au tube d'échappement, chaque cylindre distibuteur assurant sa fonction différente sur l'ensemble des cylindres monteurs.Last bonnet is pierced with lights (9) of square section opening on one side in the antechamber (8) covering the valve (1) and the other outward, either to the carburetor or to the exhaust tube, each cylinder distibuteur ensuring its different function on all cylinders assemblers. 6 ) Culasse selon la revendication i caractérisée par la présence de deux emplacements de bougies diamétralement opposés (13).6) Cylinder head according to claim i characterized by the presence of two diametrically opposed candle locations (13). 7 ) Culasse selon la revendication 1 caractéristique par la posssibilité d'adaptation facile sur différents bas moteurs, compte tenu des dimensions de ceux-ci. 7) Cylinder head according to claim 1 characterized by the posssibility of easy adaptation to different low motors, given the dimensions thereof. 8 ) Culasse selon la revendication 1 caractérisée par la modification du processus du cycle a 4 temps utilisé, en ce sens que la soupape unique s'étant ouverte pour permettre l'échappement reste dans cette position permettant l'accomplissement du temps d'admission des ga2 frais, alors que normalement sur l'autres moteurs les soupapes admissions et échappement s'ouvrent et se ferment alternativements. 8) Cylinder head according to claim 1 characterized by the modification of the process of the 4-stroke cycle used, in that the single valve having opened to allow the exhaust remains in this position allowing the completion of the admission time of the ga2 cool, while normally on the other engines the admissions and exhaust valves open and close alternatively.
FR8907035A 1989-05-23 1989-05-23 4-STROKE CYLINDER ENGINE WITH EXPLOSION AND INTERNAL COMBUSTION SINGLE-VALVE WITH ROTARY DISTRIBUTION Expired - Fee Related FR2647503B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8907035A FR2647503B1 (en) 1989-05-23 1989-05-23 4-STROKE CYLINDER ENGINE WITH EXPLOSION AND INTERNAL COMBUSTION SINGLE-VALVE WITH ROTARY DISTRIBUTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8907035A FR2647503B1 (en) 1989-05-23 1989-05-23 4-STROKE CYLINDER ENGINE WITH EXPLOSION AND INTERNAL COMBUSTION SINGLE-VALVE WITH ROTARY DISTRIBUTION

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FR2647503A1 true FR2647503A1 (en) 1990-11-30
FR2647503B1 FR2647503B1 (en) 1993-10-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772424A1 (en) * 1997-12-15 1999-06-18 Olivier Andre Piot Single valve internal combustion engine
ES2130941A1 (en) * 1996-06-14 1999-07-01 Bruggen Willy Roland V D Single-valve system for the cylinder head of four-stroke internal-combustion engines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1449304A (en) * 1918-05-09 1923-03-20 Smith Thomas Noah Internal-combustion engine
US1504195A (en) * 1923-07-12 1924-08-05 White Douglas George Fisher Valvular arrangement of internal-combustion engines
DE505645C (en) * 1929-01-23 1930-08-22 Johannes Boden Valve control for internal combustion engines
US2336756A (en) * 1941-10-13 1943-12-14 Smith Thomas Noah Rotary valve
GB566450A (en) * 1943-04-19 1944-12-29 Alfred Boorer Improvements in or relating to valve gear of internal combustion engines
FR2455175A1 (en) * 1979-04-23 1980-11-21 Ghesquiere Joseph Induction and exhaust system for internal combustion engine - has single cylinder valve with exhaust and induction valves opening onto auxiliary chamber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1449304A (en) * 1918-05-09 1923-03-20 Smith Thomas Noah Internal-combustion engine
US1504195A (en) * 1923-07-12 1924-08-05 White Douglas George Fisher Valvular arrangement of internal-combustion engines
DE505645C (en) * 1929-01-23 1930-08-22 Johannes Boden Valve control for internal combustion engines
US2336756A (en) * 1941-10-13 1943-12-14 Smith Thomas Noah Rotary valve
GB566450A (en) * 1943-04-19 1944-12-29 Alfred Boorer Improvements in or relating to valve gear of internal combustion engines
FR2455175A1 (en) * 1979-04-23 1980-11-21 Ghesquiere Joseph Induction and exhaust system for internal combustion engine - has single cylinder valve with exhaust and induction valves opening onto auxiliary chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2130941A1 (en) * 1996-06-14 1999-07-01 Bruggen Willy Roland V D Single-valve system for the cylinder head of four-stroke internal-combustion engines
FR2772424A1 (en) * 1997-12-15 1999-06-18 Olivier Andre Piot Single valve internal combustion engine

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FR2647503B1 (en) 1993-10-08

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