ITTO20080928A1

ITTO20080928A1 - DEVICE FOR THE INTERMITTENT ROTATION COMMAND OF AN EXTRACTION AND EXHAUST VALVE FOR INTERNAL COMBUSTION ENGINES.

Info

Publication number: ITTO20080928A1
Application number: IT000928A
Authority: IT
Inventors: Di Aragona Antonio Burgio
Original assignee: Di Aragona Antonio Burgio
Priority date: 2008-12-15
Filing date: 2008-12-15
Publication date: 2010-06-16
Also published as: IT1393762B1

Description

Descrizione dell'invenzione industriale dal titolo: Description of the industrial invention entitled:

DISPOSITIVO PER IL COMANDO DI ROTAZIONE INTERMITTENTE DI UNA VALVOLA DI ASPIRAZIONE E SCARICO PER MOTORI A COMBUSTIONE INTERNA DEVICE FOR THE INTERMITTENT ROTATION CONTROL OF AN INTAKE AND EXHAUST VALVE FOR INTERNAL COMBUSTION ENGINES

La presente invenzione si riferisce in generale ai motori alternativi che necessitano di un comando di distribuzione che regoli l'apertura e chiusura delle valvole . In particolare l'invenzione riguarda il comando di una valvola unica che consente l'introduzione nel cilindro della miscela e poi l'espulsione dei gas combusti. La valvola ha una luce di passaggio dei gas, praticata sul suo mantello, che permette: il riempimento del cilindro quando essa trovasi in corrispondenza del collettore di aspirazione, lo svuotamento del cilindro quando trovasi in corrispondenza del collettore di scarico e la combustione della carica quando trovasi in corrispondenza della candela di accensione. Questa valvola, avendo una sola luce di passaggio dei gas deve compiere un giro completo per ogni ciclo di funzionamento. Essa compirà dunque un giro per ogni giro del motore nel caso di ciclo a due tempi e un giro ogni due giri nei motori a quattro tempi. I vantaggi di questo tipo di funzionamento sono molteplici e vanno dalla notevole riduzione di pezzi con benefìci sui costi di produzione, sugli ingombri, sul rendimento volumetrico del motore, sulla facilità di messa in fase della distribuzione, sulla silenziosità di funzionamento e sull'evitato pericolo di sfasamento del comando che nei motori attuali comporta il dannoso urto tra valvole e stantuffi.. Con questo sistema in caso di mancato funzionamento del dispositivo si ha l'arresto del motore senza ulteriori gravosi danni. Il complessodei particolari componenti il dispositivo è costituito da (fig.l,fig.2,fig.3) : The present invention relates in general to reciprocating motors which require a distribution control which regulates the opening and closing of the valves. In particular, the invention relates to the control of a single valve which allows the introduction of the mixture into the cylinder and then the expulsion of the burnt gases. The valve has a gas passage port, made on its shell, which allows: the filling of the cylinder when it is in correspondence with the intake manifold, the emptying of the cylinder when it is in correspondence with the exhaust manifold and the combustion of the charge when located in correspondence with the spark plug. This valve, having only one gas passage port, must make one complete turn for each operating cycle. It will therefore make one revolution for each revolution of the engine in the case of a two-stroke cycle and one revolution every two revolutions in the four-stroke engines. The advantages of this type of operation are many and range from the considerable reduction of pieces with benefits on production costs, on the overall dimensions, on the volumetric efficiency of the motor, on the ease of timing distribution, on the silent operation and on the avoided danger. displacement of the command which in current engines involves the damaging impact between valves and pistons. With this system, in the event of device failure, the engine stops without further serious damage. The complex of the particular components of the device consists of (fig. 1, fig. 2, fig. 3):

una valvola 1 ruotante intorno al suo asse avente qualsivoglia conicità e una luce di passaggio 9 di forma e dimensioni opportune, a valve 1 rotating around its axis having any taper and a passage opening 9 of suitable shape and size,

un bicchiere 2 calettato sulla estremità dello stelo valvola e recant sulla parete interna una scanalatura 3 in cui si incassa un rullino 4 di raggio r , un tamburo 5 con parete esterna, avente due raggi esterni Ri e R2= Ri ... r, che si estendono per una ampiezza di circa 180° ciascuno in modo da formare una gola 10, recante uno stelo su cui è montato l'ingranaggio 13 che comanda la rotazione del complesso; a socket 2 keyed on the end of the valve stem and bearing on the internal wall a groove 3 in which a roller 4 of radius r is embedded, a drum 5 with an external wall, having two external radii Ri and R2 = Ri ... r, which they extend for an amplitude of about 180 ° each so as to form a groove 10, bearing a stem on which the gear 13 which controls the rotation of the assembly is mounted;

- una molla elicoidale torsionale 6 che si impegna con le sue stremità 12 in due fori 11 praticati rispettivamente sul tamburo 5 e sul bicchiere 2 - a torsional helical spring 6 which engages with its ends 12 in two holes 11 made respectively on the drum 5 and on the cup 2

. Questa molla è montata con un precarico torsionale 8, agente in senso opposto alla rotazione del complesso, in modo che porti l'estremità della gola ad arrestarsi contro il rullino 4. Durante il funzionamento, nelle fasi di aspirazione e compressione, la pressione interna al cilindro blocca la valvola nella sua sede mentre , persistendo la rotazione del tamburo, 1 il precarico della molla aumenta. Al diminuire della pressione la molla ripristina la configurazione iniziale riportando il rullino all'estremità della gola ovvero rimettendo nuovamente tutto il sistema in fase . . This spring is mounted with a torsional preload 8, acting in the opposite direction to the rotation of the assembly, so that it brings the end of the groove to stop against the roller 4. During operation, in the suction and compression phases, the pressure inside the cylinder locks the valve in its seat while, as the drum continues to rotate, 1 the spring preload increases. As the pressure decreases, the spring restores the initial configuration by returning the roller to the end of the groove or putting the whole system back in phase.

E' chiaro che l'invenzione, benché illustrata e descritta con riferimento a un It is clear that the invention, although illustrated and described with reference to a

solo cilindro si applica anche al caso di motori pluricilindrici, con cilindri cylinder only also applies to multi-cylinder engines, with cylinders

comunque disposti, provvedendo ad applicare opportuni cinematismi per la however arranged, providing for the application of appropriate kinematics for the

trasmissione dei moto a ogni cilindro. motion transmission to each cylinder.

Naturalmente, fermo restando il principio del trovato, i particolari di Naturally, without prejudice to the principle of the invention, the details of

costruzione e le forme di realizzazione potranno essere ampiamente variati rispetto a quanto descritto e illustrato, senza per questo uscire dall'ambito della presente invenzione. construction and the embodiments may be widely varied with respect to what has been described and illustrated, without thereby departing from the scope of the present invention.

Claims

Claims of the industrial invention patent entitled: Device for the intermittent rotation control of an intake and exhaust valve for internal combustion engines. 1.- Device (Fig. 2) for the intermittent rotation control of a conical valve (1) comprising: - a glass (2), keyed to it and bearing a groove (3) on the internal wall adapted to accommodate a roller (4)] - a drum (5), contained in the cup and bearing a portion of the outer wall, for an arc of about 180 °, lowered by a measure equal to the diameter of the roller so as to form a groove within which the roller can slide when there is relative motion between glass and drum - a torsional spring (6) with the ends fixed to the drum and cup mounted with a torsional preload (8) maintained by the stop of the roller against the end of the groove (7), characterized by the fact that, when the pressure inside the cylinder blocks the valve, the rotation of the drum continues increasing the spring preload. 2 - Device for controlling the intermittent rotation of a valve characterized by the fact that the spring, as per claim 1, returns, when the internal pressure falls, the energy accumulated during the stop of rotation of the valve, bringing back the roller and therefore the cup and the valve to the initial position, i.e. putting the whole system back in phase. 3 - Device as claimed in Claims 1 and 2, characterized in that it can be operated by means of an electric or electronic control, mechanical by means of a cascade of gears, chain or toothed belt, hydraulic and the like. 4.- Device as per claims 1,2,3 characterized in that it is applicable to any internal combustion engine Claims of Industrial invention bearing the title DEVICE FOR THE INTERMITTENT ROTATION OF A CONICAL INTAKE AND EXHAUST VALVE FOR INTERNAL COMBUSTION ENGINES. 1.- Device for intermittent rotation of a conical valve including - a coupled bowl 2 having a spline 3 on the inner part apt to receive a pin 4 - a drum 5 contained inside the bowl having a section of about ISO <5> on the esternal surface with a radius reduced of pin radius "r" just to perform a groove where the pin might slide when relative motion betwen bowl and drum is present - a torsional spring 6, whose terminals are inserted in holes 12 of the bowl and drum, torsionally preloaded by a load S manteined by the stop of the pin against the end of the groove 7, distinguished by the fact that, when the internal cilynder pressure clamps the valve, the rotation of the dram continues (pos. A fig. 3) with an increse of preload .. 2 - Device for intermittent rotation of a conical valve distinguished by the fact that the spring of the claim I, when the cilynder pressure falls, gives back the energy accumulated during the rotational stop, bringing the valve to the initial position or alternatively restoring the ritght phase between drum and bowl 3.- Device for intermittent rotation of a conical valve distinguished by the fact that it can be moved by electrical or electronic command or mechanical system through gears, bell or chain or similars, 4.- Device of the claims 1,2,3, distinguished by the fact that it can be appiyed to every type of engines.