WO2012110675A1 - System for lubricating the piston and the crankshaft in two-stroke internal combustion engines - Google Patents

System for lubricating the piston and the crankshaft in two-stroke internal combustion engines Download PDF

Info

Publication number
WO2012110675A1
WO2012110675A1 PCT/ES2012/000033 ES2012000033W WO2012110675A1 WO 2012110675 A1 WO2012110675 A1 WO 2012110675A1 ES 2012000033 W ES2012000033 W ES 2012000033W WO 2012110675 A1 WO2012110675 A1 WO 2012110675A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
crankshaft
cylinder
oil
ducts
Prior art date
Application number
PCT/ES2012/000033
Other languages
Spanish (es)
French (fr)
Inventor
Pierluigi Marconi
Original Assignee
Gas Gas Motos, S.A.
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 Gas Gas Motos, S.A. filed Critical Gas Gas Motos, S.A.
Publication of WO2012110675A1 publication Critical patent/WO2012110675A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F01M2001/062—Crankshaft with passageways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F01M2011/022—Arrangements of lubricant conduits for lubricating cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F01M2011/027—Arrangements of lubricant conduits for lubricating connecting rod bearings
    • 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
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the present invention relates to two-stroke explosion engines, proposing a lubrication system of the cylinder piston of said engines and the corresponding crankshaft, for operation under conditions of direct fuel injection into the cylinder without oil mixing.
  • the two-stroke explosion engines usually used in motorcycles and other vehicles, have the advantages over the equivalent four-stroke engines, which develop greater power for the same displacement and can be arranged in the application assembly in any position without that this affects the operation.
  • These two-stroke engines consist of a cylinder in which a piston driven by the explosion of the thermal cycle of the engine operation is moved, said piston being connected, by means of a connecting rod, with a crankshaft, which rotates to act the motor drive of the engine application mechanism.
  • the displacement of the piston in the cylinder implies a friction that requires lubrication to avoid wear and the seizure of the piston in the cylinder, said lubrication being conventionally carried out by means of the use of fuel mixed with oil, so that the injection of fuel into the cylinder for engine operation, produces the lubrication of the piston.
  • the coupling between the crankshaft and the connecting rod that relates to the piston of the engine cylinder is a rotating coupling by means of a bearing, requiring this coupling in turn of a lubrication, which is determined by a independent way of the lubrication of the piston in the cylinder.
  • a piston and crankshaft lubrication system is proposed in two-stroke explosion engines, with which said engines can be used with direct oil-free fuel injection, taking advantage of the structural and functional power advantages that They are achieved with this technique.
  • the system of the invention consists in determining through the wall of the engine cylinder one or more conduits that pass to the inner chamber of the cylinder and which are connected on the outside by means of a tube, with an oil reservoir, through an oil delivery pump to said ducts of the cylinder wall.
  • an oil inlet is determined to the bearing that establishes the coupling of said crankshaft with the connecting rod with the piston of the engine cylinder, the oil being supplied by said inlet from the same tank and through the same drive pump as the lubrication of the cylinder piston.
  • the operation of the oil supply pump for these lubrications of the cylinder piston and of the connecting bearing of the crankshaft with the connecting rod is controlled by an electronic unit, which determines a supply of lubrication oil as a function of engine revolutions and gas opening, so that the lubrication oil supply is adapted according to these two parameters.
  • this system object of the invention results from advantageous characteristics for the functional conditions of two-stroke explosion engines, acquiring its own life and preferred character of application for said engines.
  • Figure 1 shows a vertical section of a two-stroke explosion engine provided with the lubrication system according to the invention.
  • Figure 2 is a horizontal section of the engine along the plane in which the inlets of the piston lubrication oil are located.
  • Figure 3 is a sectioned perspective of the part where the crankshaft of the engine goes.
  • Figure 4 is a sectional view of said part of the engine in which the crankshaft goes, where the route of the lubrication oil of the connecting rod bearing of the connecting rod with respect to the crankshaft axis has been indicated.
  • the object of the invention relates to a lubrication system of the piston of the cylinder and the crankshaft in two-stroke engines, allowing the operation of the engine with direct fuel injection into the cylinder without mixing oil.
  • one or more of the engine cylinder wall (1) are determined ducts (2) that pass to the inner chamber (3) of the cylinder.
  • Said ducts (2) are connected, by the outside of the wall (1) of the cylinder, by means of a tube (not shown), with an oil tank, through a pump that is controlled by an electronic unit for the oil drive to the mentioned ducts (2).
  • connectors (4) are arranged on the outside of the wall (1) of the cylinder, with respect to which the coupling of the corresponding tubes by a simple pressure insertion.
  • the ducts (2) are determined in the wall (1) of the cylinder in an area where they are covered by the piston (5) in a position of the displacement of the cylinder inside the cylinder, establishing the flow of oil into said ducts (2), for the entry into the inner chamber (3) of the cylinder, depending on the engine revolutions and the gas opening, so that the quantity of lubrication oil supplied is adapted according to those two parameters
  • the injection of the lubrication oil is injected when the piston (5) is in front of or above the ducts (2), whereby, on the one hand, the lubrication oil is supplied directly between the piston (5) and the wall (1) of the cylinder, and on the other hand, the excess oil falls on the bearing (6) connecting the crankshaft (7) with the connecting rod (8) that connects it with the piston (5), thus taking advantage of that oil for the lubrication of said bearing
  • a duct (9) is determined, through which an injection supply of the lubrication oil is established directly to the bearing (6), as seen in Figures 3 and 4.
  • a connector (4) is also disposed in the outer end mouth, from which connection is established, by means of a tube, with the same reservoir and through the same oil supply pump. piston lubrication (5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a system for lubricating the piston and the crankshaft in two-stroke internal combustion engines, in which the wall (1) of the engine cylinder has one or more ducts (2) that extend to the inside chamber (3) of the cylinder, while inside the crankshaft (7), with which the piston (5) of the cylinder is associated by means of a rod (8), there is a duct (9) that communicates with the rotating coupling of the rod (8) and the crankshaft (7), the aforementioned ducts (2) and said duct (9) providing a supply of oil as a function of engine revolutions and opening of the throttle.

Description

SISTEMA. DE LUBRICACIÓN DEL PISTÓN Y EL CIGÜEÑAL EN MOTORES DE EXPLOSIÓN DE DOS TIEMPOS  SYSTEM. FOR LUBRICATION OF PISTON AND CRANKSHAFT IN TWO-TIME EXPLOSION ENGINES
Sector de la técnica Technical sector
La presente invención está relacionada con los motores de explosión de dos tiempos, proponiendo un sistema de lubricación del pistón del cilindro de dichos motores y el cigüeñal correspondiente, para el funcionamiento en condiciones de inyección directa del combustible en el cilindro sin mezcla de aceite. The present invention relates to two-stroke explosion engines, proposing a lubrication system of the cylinder piston of said engines and the corresponding crankshaft, for operation under conditions of direct fuel injection into the cylinder without oil mixing.
Estado de la técnica State of the art
Los motores de explosión de dos tiempos, habitualmente utilizados en motocicletas y otros vehículos, tienen las ventajas, sobre los motores equivalentes de cuatro tiempos, que desarrollan mayor potencia para una misma cilindrada y que se pueden disponer en el montaje de aplicación en cualquier posición sin que ello afecte al funcionamiento. The two-stroke explosion engines, usually used in motorcycles and other vehicles, have the advantages over the equivalent four-stroke engines, which develop greater power for the same displacement and can be arranged in the application assembly in any position without that this affects the operation.
Estos motores de dos tiempos constan de un cilindro en el que se desplaza un pistón impulsado por la explosión del ciclo térmico del funcionamiento del motor, yendo unido dicho pistón, por medio de una biela, con un eje cigüeñal, al que hace girar para actuar el accionamiento motriz del mecanismo de aplicación del motor. These two-stroke engines consist of a cylinder in which a piston driven by the explosion of the thermal cycle of the engine operation is moved, said piston being connected, by means of a connecting rod, with a crankshaft, which rotates to act the motor drive of the engine application mechanism.
El desplazamiento del pistón en el cilindro, conlleva un rozamiento que requiere una lubricación para evitar desgastes y el gripado del pistón en el cilindro, realizándose convencionalmente dicha lubricación mediante la utilización de combustible mezclado con aceite, de forma que la propia inyección del combustible en el cilindro para el funcionamiento del motor, produce la lubricación del pistón. The displacement of the piston in the cylinder, implies a friction that requires lubrication to avoid wear and the seizure of the piston in the cylinder, said lubrication being conventionally carried out by means of the use of fuel mixed with oil, so that the injection of fuel into the cylinder for engine operation, produces the lubrication of the piston.
Por otro lado, el acoplamiento entre el eje cigüeñal y la biela que le relaciona con el pistón del cilindro del motor, es un acoplamiento giratorio por medio de un rodamiento, requiriendo este acoplamiento a su vez de una lubricación, la cual se determina de una manera independiente de la lubricación del pistón en el cilindro . On the other hand, the coupling between the crankshaft and the connecting rod that relates to the piston of the engine cylinder, is a rotating coupling by means of a bearing, requiring this coupling in turn of a lubrication, which is determined by a independent way of the lubrication of the piston in the cylinder.
Para conseguir mayor potencia de funcionamiento con menor volumen estructural, se han desarrollado motores en los que el combustible se inyecta directamente en la cámara del cilindro, utilizándose combustible limpio, sin mezcla de aceite, por lo que se requiere una aportación de aceite de lubricación del pistón, con independencia de la inyección del combustible . To achieve greater operating power with lower structural volume, engines have been developed in which the fuel is injected directly into the cylinder chamber, using clean fuel, without mixing of oil, so that a lubrication oil supply of the piston, regardless of fuel injection.
Objeto de la invención Object of the invention
De acuerdo con la invención se propone un sistema de lubricación del pistón y el cigüeñal en los motores de explosión de dos tiempos, con el cual dichos motores se pueden utilizar con inyección directa de combustible sin aceite, aprovechando las ventajas estructurales y de potencia funcional que se consiguen con esta técnica . According to the invention, a piston and crankshaft lubrication system is proposed in two-stroke explosion engines, with which said engines can be used with direct oil-free fuel injection, taking advantage of the structural and functional power advantages that They are achieved with this technique.
El sistema de la invención consiste en determinar a través de la pared del cilindro del motor uno o más conductos que pasan hasta la cámara interior del cilindro y que por la parte exterior se conectan, por medio de un tubo, con un depósito de aceite, a través de una bomba de impulsión del aceite hacia dichos conductos de la pared del cilindro. The system of the invention consists in determining through the wall of the engine cylinder one or more conduits that pass to the inner chamber of the cylinder and which are connected on the outside by means of a tube, with an oil reservoir, through an oil delivery pump to said ducts of the cylinder wall.
Por otro lado, a través del propio eje cigüeñal se determina una entrada de aceite hasta el rodamiento que establece el acoplamiento de dicho eje cigüeñal con la biela de relación con el pistón del cilindro del motor, suministrándose el aceite por dicha entrada desde el mismo depósito y a través de la misma bomba de impulsión que la lubricación del pistón del cilindro. On the other hand, through the crankshaft axis itself an oil inlet is determined to the bearing that establishes the coupling of said crankshaft with the connecting rod with the piston of the engine cylinder, the oil being supplied by said inlet from the same tank and through the same drive pump as the lubrication of the cylinder piston.
En esa disposición, el funcionamiento de la bomba de impulsión del aceite para esas lubricaciones del pistón del cilindro y del rodamiento de unión del eje cigüeñal con la biela, se controla mediante una unidad electrónica, la cual determina un suministro de aceite de lubricación en función de las revoluciones del motor y de la apertura del gas, de manera que el suministro del aceite de lubricación se adapta en función de estos dos parámetros. In that arrangement, the operation of the oil supply pump for these lubrications of the cylinder piston and of the connecting bearing of the crankshaft with the connecting rod is controlled by an electronic unit, which determines a supply of lubrication oil as a function of engine revolutions and gas opening, so that the lubrication oil supply is adapted according to these two parameters.
De este modo solo se consume la cantidad de aceite de lubricación que es necesaria en cada instante de acuerdo con el estado de movimiento de los elementos funcionales del motor y debido a que la aportación del aceite de lubricación se hace directamente entre el pistón y la pared del cilindro y en el rodamiento de unión del eje cigüeñal con la biela, la cantidad de aceite que se consume es mucho menor que en los motores tradicionales de dos tiempos, consiguiéndose mejor funcionalidad y menor polución de escape del motor de aplicación . In this way, only the amount of lubrication oil that is required at each moment is consumed according to the state of motion of the functional elements of the engine and because the lubrication oil is supplied directly between the piston and the wall of the cylinder and in the connecting bearing of the crankshaft with the connecting rod, the amount of oil consumed is much less than in traditional two-stroke engines, achieving better functionality and less pollution from the application engine.
Por todo ello, este sistema objeto de la invención resulta de unas características ventajosas para las condiciones funcionales de los motores de explosión de dos tiempos, adquiriendo vida propia y carácter preferente de aplicación para dichos motores. Therefore, this system object of the invention It results from advantageous characteristics for the functional conditions of two-stroke explosion engines, acquiring its own life and preferred character of application for said engines.
Descripción de las figuras Description of the figures
La figura 1 muestra una sección vertical de un motor de explosión de dos tiempos provisto con el sistema de lubricación según la invención. Figure 1 shows a vertical section of a two-stroke explosion engine provided with the lubrication system according to the invention.
La figura 2 es una sección horizontal del motor por el plano en el que se hallan los conductos de entrada del aceite de lubricación del pistón. Figure 2 is a horizontal section of the engine along the plane in which the inlets of the piston lubrication oil are located.
La figura 3 es una perspectiva seccionada de la parte en la que se va el eje cigüeñal del motor. Figure 3 is a sectioned perspective of the part where the crankshaft of the engine goes.
La figura 4 es una vista en sección de dicha parte del motor en la que va el eje cigüeñal, en donde se ha indicado el recorrido del aceite de lubricación del rodamiento de unión de la biela respecto del eje cigüeñal . Figure 4 is a sectional view of said part of the engine in which the crankshaft goes, where the route of the lubrication oil of the connecting rod bearing of the connecting rod with respect to the crankshaft axis has been indicated.
Descripción detallada de la invención Detailed description of the invention
El objeto de la invención se refiere a un sistema de lubricación del pistón del cilindro y el eje cigüeñal en motores de explosión de dos tiempos, permitiendo el funcionamiento del motor con inyección directa del combustible en el cilindro sin mezcla de aceite . The object of the invention relates to a lubrication system of the piston of the cylinder and the crankshaft in two-stroke engines, allowing the operation of the engine with direct fuel injection into the cylinder without mixing oil.
De acuerdo con el sistema preconizado, en la pared (1) del cilindro del motor se determinan uno o más conductos (2) que pasan hasta la cámara interior (3) del cilindro. According to the recommended system, one or more of the engine cylinder wall (1) are determined ducts (2) that pass to the inner chamber (3) of the cylinder.
Dichos conductos (2) se conectan, por la parte exterior de la pared (1) del cilindro, por medio de un tubo (no representado) , con un depósito de aceite, a través de una bomba que es controlada por una unidad electrónica para la impulsión del aceite hacia los mencionados conductos (2). Said ducts (2) are connected, by the outside of the wall (1) of the cylinder, by means of a tube (not shown), with an oil tank, through a pump that is controlled by an electronic unit for the oil drive to the mentioned ducts (2).
Para establecer la conexión del tubo de comunicación con el depósito de aceite, en relación con los conductos (2) se disponen en la parte exterior de la pared (1) del cilindro unos conectores (4), respecto de los cuales se puede establecer el acoplamiento de los tubos correspondientes mediante una sencilla inserción a presión. To establish the connection of the communication tube with the oil tank, in connection with the ducts (2), connectors (4) are arranged on the outside of the wall (1) of the cylinder, with respect to which the coupling of the corresponding tubes by a simple pressure insertion.
Los conductos (2) se determinan en la pared (1) del cilindro en una zona en la que queden cubiertos por el pistón (5) en una posición del desplazamiento del mismo por el interior del cilindro, estableciéndose la impulsión del aceite hacia dichos conductos (2), para la entrada en la cámara interior (3) del cilindro, en función de las revoluciones del motor y de la apertura del gas, de manera que la cantidad de aceite de lubricación que se suministra se adapta en función de esos dos parámetros. The ducts (2) are determined in the wall (1) of the cylinder in an area where they are covered by the piston (5) in a position of the displacement of the cylinder inside the cylinder, establishing the flow of oil into said ducts (2), for the entry into the inner chamber (3) of the cylinder, depending on the engine revolutions and the gas opening, so that the quantity of lubrication oil supplied is adapted according to those two parameters
En esas condiciones, la inyección del aceite de lubricación se inyecta cuando el pistón (5) se encuentra por delante de los conductos (2) o por encima de los mismos, con lo cual, por un lado, el aceite de lubricación se suministra directamente entre el pistón (5) y la pared (1) del cilindro, y por otro lado, el aceite sobrante cae sobre el rodamiento (6) de unión del eje cigüeñal (7) con la biela (8) que le relaciona con el pistón (5), aprovechándose por lo tanto ese aceite para la lubricación del mencionado rodamientoUnder these conditions, the injection of the lubrication oil is injected when the piston (5) is in front of or above the ducts (2), whereby, on the one hand, the lubrication oil is supplied directly between the piston (5) and the wall (1) of the cylinder, and on the other hand, the excess oil falls on the bearing (6) connecting the crankshaft (7) with the connecting rod (8) that connects it with the piston (5), thus taking advantage of that oil for the lubrication of said bearing
(6) . (6).
Además, por el interior del propio eje cigüeñalIn addition, inside the crankshaft itself
(7) se determina un conducto (9), a través del cual se establece a su vez un suministro de inyección del aceite de lubricación directamente al rodamiento (6), como se observa en las figuras 3 y 4. (7) a duct (9) is determined, through which an injection supply of the lubrication oil is established directly to the bearing (6), as seen in Figures 3 and 4.
En relación con dicho conducto (9) se dispone igualmente en la embocadura extrema exterior un conector (4), desde el cual se establece conexión, por medio de un tubo, con el mismo depósito y a través de la misma bomba de impulsión del aceite de lubricación del pistón ( 5 ) . In relation to said conduit (9) a connector (4) is also disposed in the outer end mouth, from which connection is established, by means of a tube, with the same reservoir and through the same oil supply pump. piston lubrication (5).
De este modo se suministra en cada instante solo la cantidad de aceite de lubricación necesaria de acuerdo con el movimiento de los elementos funcionales del motor, permitiendo obtener un ahorro considerable (hasta un 60%) de dicho aceite de lubricación, respecto de los motores de explosión convencionales de dos tiempos; permitiendo además la utilización del motor con inyección directa del combustible a la cámara interior (3) del cilindro, utilizando combustible limpio, sin mezcla con aceite, ya que a la vez que se desplaza el pistón (5), cuando el mismo pasa por delante de los conductos (2) se produce una entrada de aceite que lubrica el contacto entre dicho pistón (5) y la pared (1) del cilindro. In this way, only the quantity of lubrication oil required in accordance with the movement of the functional elements of the engine is supplied at each moment, allowing a considerable saving (up to 60%) of said lubrication oil, with respect to the engines of conventional two-stroke explosion; also allowing the use of the engine with direct injection of the fuel into the inner chamber (3) of the cylinder, using clean fuel, without mixing with oil, since at the same time the piston (5) moves, when it passes in front of the conduits (2) an oil inlet is produced that lubricates the contact between said piston (5) and the wall (1) of the cylinder.

Claims

REIVINDICACIONES
1.- Sistema de lubricación del pistón y el cigüeñal en motores de explosión de dos tiempos, para el funcionamiento del motor con inyección directa de combustible sin mezcla de aceite, comprendiendo un cilindro en cuyo interior se mueve un pistón (5) que es impulsado por la explosión del combustible, para hacer girar, por medio de una biela (8), a un eje cigüeñal1.- Lubrication system of the piston and the crankshaft in two-stroke explosion engines, for the operation of the engine with direct fuel injection without mixing of oil, comprising a cylinder in whose interior a piston (5) moves which is driven by the explosion of the fuel, to rotate, by means of a connecting rod (8), to a crankshaft
(7), caracterizado en que en la pared (1) del cilindro del motor se determinan uno o más conductos (2) que pasan hasta la cámara interior (3) del cilindro, conectándose dichos conductos (2) por la parte exterior, por medio de un tubo, con un depósito de aceite, a través de una bomba de impulsión del aceite hacia esos conductos (2), de forma que el aceite que entra por los mencionados conductos (2) lubrica el contacto entre el pistón (5) y la pared (1) del cilindro; mientras que por el interior del eje cigüeñal(7), characterized in that on the wall (1) of the engine cylinder one or more ducts (2) are passed that pass to the inner chamber (3) of the cylinder, said ducts (2) being connected on the outside, by means of a tube, with an oil reservoir, through an oil pump to these ducts (2), so that the oil that enters through the mentioned ducts (2) lubricates the contact between the piston (5) and the wall (1) of the cylinder; while inside the crankshaft
(7) se determina un conducto (9), a través del cual se establece, desde el mismo depósito, un suministro de aceite hasta un rodamiento (6) que une a dicho eje cigüeñal (7) con la biela (8) que le relaciona con el pistón (5) . (7) a conduit (9) is determined, through which, from the same reservoir, an oil supply is established to a bearing (6) that joins said crankshaft shaft (7) with the connecting rod (8) that relates to the piston (5).
2.- Sistema de lubricación del pistón y el cigüeñal en motores de explosión de dos tiempos, de acuerdo con la primera reivindicación, caracterizado en que los conductos (2) se determinan en la pared (1) del cilindro en una zona en la que el pistón (5) queda por delante o por encima de ellos en su desplazamiento por la cámara interior (3) del cilindro. 2.- Lubrication system of the piston and the crankshaft in two-stroke explosion engines, according to the first claim, characterized in that the ducts (2) are determined in the wall (1) of the cylinder in an area where The piston (5) is in front of or above them as it travels through the inner chamber (3) of the cylinder.
3.- Sistema de lubricación del pistón y el cigüeñal en motores de explosión de dos tiempos, de acuerdo con las reivindicaciones primera y segunda, caracterizado en que la impulsión del aceite de lubricación hacia los conductos (2) y hacia el conducto (9) se establece en función de las revoluciones del motor y de la apertura del gas. 3.- Piston and crankshaft lubrication system in two-stroke explosion engines, of according to the first and second claims, characterized in that the lubrication oil is driven into the conduits (2) and the conduit (9) based on the engine revolutions and the gas opening.
4.- Sistema de lubricación del pistón y el cigüeñal en motores de explosión de dos tiempos, de acuerdo con la primera reivindicación, caracterizado en que en relación con los conductos (2) y con el conducto (9) se disponen en la embocadura extrema exterior unos conectores (4), para establecer el acoplamiento de los tubos de conexión con el depósito de aceite. 4.- Lubrication system of the piston and the crankshaft in two-stroke explosion engines, according to the first claim, characterized in that in relation to the ducts (2) and the duct (9) they are arranged in the extreme mouth External connectors (4), to establish the coupling of the connection pipes with the oil tank.
PCT/ES2012/000033 2011-02-17 2012-02-17 System for lubricating the piston and the crankshaft in two-stroke internal combustion engines WO2012110675A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201100171A ES2399685B1 (en) 2011-02-17 2011-02-17 PISTON AND CRANKSHAFT LUBRICATION SYSTEM IN TWO-TIME EXPLOSION ENGINES
ESP201100171 2011-02-17

Publications (1)

Publication Number Publication Date
WO2012110675A1 true WO2012110675A1 (en) 2012-08-23

Family

ID=46671970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2012/000033 WO2012110675A1 (en) 2011-02-17 2012-02-17 System for lubricating the piston and the crankshaft in two-stroke internal combustion engines

Country Status (2)

Country Link
ES (1) ES2399685B1 (en)
WO (1) WO2012110675A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11578647B2 (en) 2020-03-11 2023-02-14 Arctic Cat Inc. Engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969430A (en) * 1989-02-01 1990-11-13 Yamaha Hatsudoki Kabushiki Kaisha Lubrication system for two stroke engine
US5002025A (en) * 1990-06-18 1991-03-26 Crouse William H Lubricating oil permeable cylinder wall ring
US5782217A (en) * 1993-10-12 1998-07-21 Yamaha Hatsudoki Kabushiki Kaisha Piston for two cycle engine
US20030029396A1 (en) * 1999-03-11 2003-02-13 David Haman Oil injection system
US20030101959A1 (en) * 2001-12-04 2003-06-05 Hare Nicholas S. Engine with dry sump lubrication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969430A (en) * 1989-02-01 1990-11-13 Yamaha Hatsudoki Kabushiki Kaisha Lubrication system for two stroke engine
US5002025A (en) * 1990-06-18 1991-03-26 Crouse William H Lubricating oil permeable cylinder wall ring
US5782217A (en) * 1993-10-12 1998-07-21 Yamaha Hatsudoki Kabushiki Kaisha Piston for two cycle engine
US20030029396A1 (en) * 1999-03-11 2003-02-13 David Haman Oil injection system
US20030101959A1 (en) * 2001-12-04 2003-06-05 Hare Nicholas S. Engine with dry sump lubrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11578647B2 (en) 2020-03-11 2023-02-14 Arctic Cat Inc. Engine

Also Published As

Publication number Publication date
ES2399685B1 (en) 2013-12-12
ES2399685A1 (en) 2013-04-02

Similar Documents

Publication Publication Date Title
ES2778449T3 (en) Cooling structure of electric generator for internal combustion engine
ES2328592T3 (en) OIL SUPPLY FOR A COMBUSTION ENGINE.
US20030098203A1 (en) Motorcycle lubrication oil cooling system
US1606424A (en) Oiling system for gas engines
US6877491B2 (en) Air fuel injection engine
CN201671797U (en) Automobile water-cooling air compressor
ES2399685B1 (en) PISTON AND CRANKSHAFT LUBRICATION SYSTEM IN TWO-TIME EXPLOSION ENGINES
US8627809B2 (en) Engine lubrication method
US20110259294A1 (en) Lubricating System for a Two-Stroke Engine
CN204677589U (en) The lubricating structure of homogenizer driving mechanism and the cross head design of use thereof
BRPI0800650A (en) lubricated cooled piston and piston pin lubricated
CN105909417A (en) Engine cylinder body
CN108381473B (en) Power tool and oil supply device for power tool
RU2477804C2 (en) Fluid medium system for engines with rocking pistons
US1543113A (en) Engine-lubrication system
CN107448320B (en) Two-cycle engine
CN205155524U (en) Novel outboard rotor formula oil pump
CN201420582Y (en) Injection fuel line of right box lubrication and piston cooling of motorcycle engine
CN201358844Y (en) Engine piston with easy starting lubrication
US1209989A (en) Internal-combustion engine.
US1670549A (en) Internal-combustion engine
ES2215968T3 (en) TWO-TIME INTERNAL COMBUSTION ENGINE WITH DIRECT INJECTION OF THE PNEUMATICALLY ASSISTED FUEL.
JP4918522B2 (en) Model engine
CN203835484U (en) Gasoline engine provided with pressure lubrication structure and lubrication structure of gasoline engine
CN204003145U (en) A kind of crankcase mechanism

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12747451

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12747451

Country of ref document: EP

Kind code of ref document: A1