ES2390036A1 - Two-stroke combustion engine with combined injection - Google Patents
Two-stroke combustion engine with combined injection Download PDFInfo
- Publication number
- ES2390036A1 ES2390036A1 ES201001503A ES201001503A ES2390036A1 ES 2390036 A1 ES2390036 A1 ES 2390036A1 ES 201001503 A ES201001503 A ES 201001503A ES 201001503 A ES201001503 A ES 201001503A ES 2390036 A1 ES2390036 A1 ES 2390036A1
- Authority
- ES
- Spain
- Prior art keywords
- cylinder
- piston
- engine
- injection
- fuel
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- 238000002485 combustion reaction Methods 0.000 title abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims description 16
- 238000004880 explosion Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M71/00—Combinations of carburettors and low-pressure fuel-injection apparatus
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
- F02B25/16—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke the charge flowing upward essentially along cylinder wall opposite the inlet 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
- 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
-
- 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
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
MOTOR DE EXPLOSIÓN DE DOS TIEMPOS CON INYECCIÓN COMBINADA TWO-TIME EXPLOSION ENGINE WITH COMBINED INJECTION
Sector de la técnica Technical sector
La presente invención está relacionada con los motores de explosión de dos tiempos, proponiendo un motor de este tipo con inyección combinada, de forma que a bajas revoluciones funciona con inyección directa, mientras que a altas revoluciones funciona con inyección directa y con inyección indirecta, conjuntamente, realizándose en ambos casos la inyección directa cuando la salida de gases de escape se halla obturada por el pistón del cilindro, con lo cual se consigue un mejor rendimiento y una disminución de las emisiones contaminantes. The present invention is related to two-stroke explosion engines, proposing such an engine with combined injection, so that at low revolutions it works with direct injection, while at high revolutions it works with direct injection and with indirect injection, together In both cases, the direct injection is carried out when the exhaust gas outlet is blocked by the piston of the cylinder, which results in better performance and a decrease in pollutant emissions.
Estado de la técnica State of the art
Los motores de explosión de dos tiempos, que son habitualmente utilizados en motocicletas y otros vehículos, tienen las ventajas, sobre los motores equivalentes de cuatro tiempos, que desarrollan mayor The two-stroke explosion engines, which are usually used in motorcycles and other vehicles, have the advantages over the equivalent four-stroke engines, which develop greater
- potencia power
- para una misma cilindrada y que se pueden for a same displacement Y that be they can
- colocar place
- en cualquier posición sin que ello afecte al in any position without that it affect to the
- funcionamiento. functioning.
Dichos motores de dos tiempos constan de un cilindro en el que se desplaza un pistón cuyos recorridos dan lugar a las fases del ciclo térmico del funcionamiento del motor, realizando el propio pistón la apertura y cierre de los conductos de entrada de combustible y aire y salida de gases que posee la cámara del cilindro. Said two-stroke engines consist of a cylinder in which a piston is moved whose paths give rise to the phases of the thermal cycle of the engine's operation, the piston itself performing the opening and closing of the fuel and air inlet and outlet ducts of gases that the cylinder chamber has.
Una solución funcional de dichos motores es con inyección indirecta, de forma que en un dispositivo denominado carburador se inyecta combustible, por un lado, y aire, por otro lado, produciéndose una mezcla de combustible-aire, la cual se suministra al cilindro del motor por una aspiración que es ocasionada por el movimiento del pistón. A functional solution of these engines is with indirect injection, so that in a device called carburetor fuel is injected, on the one hand, and air, on the other hand, producing a mixture of fuel-air, which is supplied to the engine cylinder by an aspiration that is caused by the movement of the piston.
Otra solución funcional de dichos motores es con inyección directa, de forma que el combustible se inyecta directamente en el cilindro del motor, al cual llega a su vez aire por otro lado, formándose la mezcla combustible-aire dentro del propio cilindro. Another functional solution of these engines is with direct injection, so that the fuel is injected directly into the engine cylinder, which in turn reaches air on the other hand, forming the fuel-air mixture inside the cylinder itself.
En las realizaciones convencionales de estos motores, el combustible que se inyecta llega al cilindro del motor cuando la salida de escape de los gases se encuentra todavía abierta, con lo cual una parte del combustible entra en esa salida de escape de los gases, en donde queda hasta que se produce la expulsión de los gases de la combustión del ciclo térmico del funcionamiento del motor, de modo que la cantidad de combustible que había quedado en la salida, In conventional embodiments of these engines, the fuel that is injected reaches the engine cylinder when the exhaust outlet of the gases is still open, whereby a part of the fuel enters that exhaust outlet of the gases, where it remains until the expulsion of the combustion gases from the thermal cycle of the engine operation occurs, so that the amount of fuel that was left at the exit,
- es is
- expulsada entonces junto con los gases de la expelled so together with the gas from the
- combustión, combustion,
- lo que da lugar a una emisión de gases the that gives place to a issue from gas
- contaminantes pollutants
- y a la pérdida de una cantidad de Y to the lost from a quantity from
- combustible que fuel that
- no es aprovechado. no is taken advantage of.
De acuerdo con la invención se propone un motor de explosión de dos tiempos que incluye una combinación de inyección directa y de inyección indirecta, con una realización estructural y una disposición funcional que logran unas particularidades de funcionamiento que
According to the invention, a two-stroke explosion engine is proposed that includes a combination of direct injection and indirect injection, with a structural embodiment and a functional arrangement that achieve operating characteristics that
mejoran el rendimiento y reducen las emisiones contaminantes. They improve performance and reduce pollutant emissions.
Este motor objeto de la invención consta de un cilindro en el que se desplaza un pistón en recorridos de avance y retroceso, yendo en un extremo del cilindro una bujía de ignición, mientras que la cavidad del cilindro se halla en comunicación, por un lado, con una salida de expulsión de gases y, por otro lado, con una entrada procedente de un carburador. This engine object of the invention consists of a cylinder in which a piston travels in forward and reverse paths, an ignition spark plug going at one end of the cylinder, while the cylinder cavity is in communication, on the one hand, with a gas ejection outlet and, on the other hand, with an input from a carburetor.
Según la invención, en relación con la cavidad del cilindro se incluye además un inyector suministrador de combustible directamente a esa cavidad del cilindro, yendo dispuesto este inyector entre la salida de expulsión de gases y el extremo del cilindro en el que se halla la bujía de ignición, en una posición inclinada respecto de la dirección del movimiento del pistón en el cilindro, con una inclinación entre 20° y 35 o respecto de la perpendicular a ese movimiento del pistón en el cilindro. According to the invention, in relation to the cylinder cavity a fuel supply injector is also included directly to that cylinder cavity, this injector being arranged between the gas ejection outlet and the end of the cylinder in which the spark plug is located. ignition, in an inclined position with respect to the direction of movement of the piston in the cylinder, with an inclination between 20 ° and 35 or with respect to that perpendicular to that movement of the piston in the cylinder.
- Con With
- esa disposición, por medio de un control de that provision, by means, medium from a control from
- gobierno government
- se establece una pauta de funcionamiento, de be establishes a pattern from functioning, from
- forma shape
- que hasta la mitad de las revoluciones de la that until the half from the revolutions from the
potencia máxima del motor solo se produce inyección directa de combustible a la cámara del cilindro, entrando aire limpio desde el carburador, mientras que por encima de esa mitad de las revoluciones de la potencia máxima del motor se produce una inyección directa de combustible a la cámara del cilindro y a la vez una inyección indirecta de mezcla combustible-aire desde el carburador, realizándose en ambos casos la inyección directa de combustible a la cámara del cilindro cuando el pistón se encuentra en su desplazamiento de avance en una posición que obtura la salida de expulsión de gases.
maximum engine power only produces direct fuel injection into the cylinder chamber, entering clean air from the carburetor, while above that half of the revolutions of maximum engine power a direct fuel injection into the chamber occurs of the cylinder and at the same time an indirect injection of fuel-air mixture from the carburetor, in both cases the direct injection of fuel into the cylinder chamber is carried out when the piston is in its advance travel in a position that seals the ejection outlet of gases
De esta forma se obtiene un motor que en régimen de baja potencia funciona en unas condiciones en las que todo el combustible que se inyecta se quema en la fase de combustión, de manera que los gases que se expulsan no contienen combustible, por lo que son menos contaminantes, en tanto que el aprovechamiento del combustible es total, consiguiéndose un mayor rendimiento. In this way, an engine is obtained which, in a low power regime, operates in conditions in which all the fuel that is injected is burned in the combustion phase, so that the gases that are expelled do not contain fuel, so they are less pollutants, while the use of fuel is total, achieving greater performance.
En el régimen de altas potencias sí se produce una pérdida parcial de combustible que se expulsa con los gases de la combustión, pero esto es mucho menos significativo que en los motores convencionales, ya que al funcionar el motor con inyección directa y con inyección indirecta a la vez, solo en la proporción que corresponde a la inyección indirecta se produce pérdida parcial de combustible, siendo esta pérdida por lo tanto muy reducida, así como la emisión de gases contaminantes. In the high power regime there is a partial loss of fuel that is expelled with combustion gases, but this is much less significant than in conventional engines, since when the engine is operated with direct injection and indirect injection to at the same time, only in the proportion that corresponds to the indirect injection does partial loss of fuel occur, this loss being therefore very reduced, as well as the emission of polluting gases.
Por todo ello, dicho motor objeto de la invención resulta de unas características de funcionamiento muy ventajosas, adquiriendo vida propia y carácter preferente respecto de los motores convencionales del mismo tipo. Therefore, said motor object of the invention results from very advantageous operating characteristics, acquiring its own life and preferential character with respect to conventional motors of the same type.
La figura 1 muestra una perspectiva general de un motor realizado según la invención.
Figure 1 shows an overview of an engine made according to the invention.
La figura 2 es una vista en sección del motor de Figure 2 is a sectional view of the engine of
la figura anterior, con el pistón en la posición retrasada en el cilindro. the previous figure, with the piston in the position delayed in the cylinder.
La figura 3 es una sección del motor como la anterior, con el pistón en la posición avanzada en el cilindro. Figure 3 is a section of the engine like the previous one, with the piston in the advanced position in the cylinder.
Descripción detallada de la invención Detailed description of the invention
El objeto de la invención se refiere a un motor de explosión de dos tiempos, realizado con unas características que permiten obtener unas condiciones de funcionamiento ventajosas, adaptándose de una manera particular en los regímenes de bajas y de altas potencias. The object of the invention relates to a two-stroke explosion engine, made with characteristics that allow to obtain advantageous operating conditions, adapting in a particular way in the low and high power regimes.
El motor preconizado consta de un cilindro (1), en el cual juega un pistón (2) que se desplaza linealmente en recorridos de avance y retroceso, movido por un cigüeñal (3) • The recommended engine consists of a cylinder (1), in which it plays a piston (2) that moves linearly in forward and reverse paths, moved by a crankshaft (3) •
En un extremo del cilindro ( 1) va dispuesta una bujía ( 4) de ignición, poseyendo la cavidad de dicho cilindro (1) ' por un lado, una salida (5) de expulsión de gases y, por otro lado, una entrada ( 6) comunicada At one end of the cylinder (1) an ignition spark plug (4) is disposed, with the cavity of said cylinder (1) 'on the one hand, a gas ejection outlet (5) and, on the other hand, an inlet ( 6) communicated
con un carburador (7) en el que se produce una inyección de combustible y a la vez una entrada de with a carburetor (7) in which a fuel injection occurs and at the same time an inlet of
aire, de forma que en dicho carburador ( 7) se realiza una mezcla de combustible-aire, la cual llega al cilindro ( 1) por absorción del pistón (2) al desplazarse por el interior de dicho cilindro (1) ' es decir según una inyección indirecta. air, so that in said carburetor (7) a fuel-air mixture is made, which reaches the cylinder (1) by absorbing the piston (2) when traveling inside said cylinder (1) 'that is according to an indirect injection.
En relación con la cavidad del cilindro (1) va dispuesto además un inyector (8), por medio del cual se inyecta a su vez combustible directamente a dicha cavidad del cilindro (1).
In relation to the cylinder cavity (1), an injector (8) is also arranged, by means of which fuel is injected directly into said cylinder cavity (1).
Mediante un control de gobierno, se establece una pauta de funcionamiento, por la cual la inyección de combustible directamente a la cámara del cilindro ( 1) por medio del inyector (8), se produce durante todo el funcionamiento del motor, mientras que la inyección de mezcla combustible-aire indirectamente desde el carburador (7), se produce solo en el régimen de altas potencias, a partir de la mitad de las revoluciones de la potencia máxima del motor, por ejemplo a partir de 5000 revoluciones por minuto en un motor cuya potencia máxima se alcanza a 10.000 revoluciones por minuto; es decir, que en bajas potencias el motor funciona solo con inyección directa y en altas potencias con inyección directa e inyección indirecta a la vez. Through a control of government, an operating pattern is established, whereby the injection of fuel directly into the cylinder chamber (1) by means of the injector (8), occurs during the entire operation of the engine, while the injection of fuel-air mixture indirectly from the carburetor (7), is produced only in the high power regime, from half of the revolutions of the maximum engine power, for example from 5000 revolutions per minute in an engine whose maximum power is reached at 10,000 revolutions per minute; that is to say, in low powers the engine works only with direct injection and in high powers with direct injection and indirect injection at the same time.
Por otro lado, el control de gobierno determina a On the other hand, government control determines
- su its
- vez que la inyección directa de combustible a la time that the injection direct from fuel to the
- cámara camera
- del cilindro (1) por medio del inyector (8), se of the cylinder (one) by means, medium of the injector (8), be
- produzca produce
- a partir de una posición del recorrido de to split from a position of the travel from
- avance Advance
- del pistón (2) en la que la salida (5) de of the piston (2) in the that the exit (5) from
expulsión de gases se encuentra obturada por dicho pistón (2), con lo cual toda la cantidad de combustible que inyecta el inyector (8) queda en la cámara del cilindro, sin que parte alguna del combustible inyectado entre en la salida (5) de expulsión, de modo que toda la cantidad inyectada de combustible se quema en la fase de combustión. gas ejection is sealed by said piston (2), whereby all the amount of fuel injected by the injector (8) is left in the cylinder chamber, without any part of the fuel injected entering the outlet (5) of expulsion, so that the entire amount of fuel injected is burned in the combustion phase.
De este modo, en el régimen de bajas potencias el funcionamiento del motor resulta con un aprovechamiento total del combustible y una emisión de gases poco contaminantes, ya que solo se utiliza la inyección directa, con la que toda la cantidad de combustible que se inyecta a la cámara del cilindro (1) se quema en la fase de combustión; mientras que en el régimen de altas
In this way, in the low power regime the engine operation results in a total use of the fuel and an emission of low-polluting gases, since only direct injection is used, with which all the amount of fuel injected into the cylinder chamber (1) burns in the combustion phase; while in the high regimen
potencias, debido a la utilización de inyección indirecta conjuntamente con la inyección directa, una parte del combustible que se suministra mediante la powers, due to the use of indirect injection together with direct injection, a part of the fuel that is supplied by the
inyección indirecta, entra en la salida (5) y no se quema, siendo expulsado con los gases de la combustión, pero la cantidad de combustible que se pierde en este caso es muy pequeña, ya que es solo una pequeña cantidad de la parte proporcional que corresponde a la inyección indirecta. indirect injection, enters the outlet (5) and does not burn, being expelled with combustion gases, but the amount of fuel lost in this case is very small, since it is only a small amount of the proportional part which corresponds to indirect injection.
Para favorecer el efecto de la inyección directa en la cámara del cilindro ( 1) ' el inyector ( 8) se dispone en una posición inclinada respecto de la dirección del movimiento del pistón (2) ' con un ángulo To favor the effect of direct injection into the cylinder chamber (1) 'the injector (8) is arranged in an inclined position with respect to the direction of movement of the piston (2)' with an angle
(a) de inclinación respecto de la perpendicular a esa dirección del movimiento del pistón (2), entre 20 ° y 35°, que es la posición en la que se ha comprobado mayor eficacia de dicho efecto de la inyección directa. (a) of inclination with respect to the perpendicular to that direction of the movement of the piston (2), between 20 ° and 35 °, which is the position in which the effect of said direct injection effect has been proven most effective.
- Aunque Though
- las explicaciones sobre el motor the explanations on he engine
- preconizado recommended
- se han hecho considerando la inyección de be have done considering the injection from
- combustible fuel
- solo para el funcionamiento del motor, en alone for he functioning of the engine, in
- cuyo whose
- caso debe establecerse independientemente una case should settle independently a
- lubricación lubrication
- con aceite del movimiento del pistón en el with oil of the movement of the piston in he
cilindro, no altera el objeto de la invención de acuerdo con las características previstas para el funcionamiento del motor de manera combinada con inyección directa y con inyección indirecta, si el combustible se inyecta mezclado con aceite, como convencionalmente se hace en muchos motores de explosión de dos tiempos, para la lubricación del movimiento del pistón en el cilindro con la propia
cylinder, does not alter the object of the invention according to the characteristics provided for the operation of the engine in combination with direct injection and indirect injection, if the fuel is injected mixed with oil, as is conventionally done in many explosion engines of two times, for the lubrication of the movement of the piston in the cylinder with the own
mezcla de combustible-aceite que se inyecta.
fuel-oil mixture that is injected.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201001503A ES2390036B1 (en) | 2010-11-25 | 2010-11-25 | TWO-TIME EXPLOSION ENGINE WITH COMBINED INJECTION |
| PCT/ES2011/000337 WO2012069674A1 (en) | 2010-11-25 | 2011-11-23 | Two-stroke combustion engine with combined injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201001503A ES2390036B1 (en) | 2010-11-25 | 2010-11-25 | TWO-TIME EXPLOSION ENGINE WITH COMBINED INJECTION |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2390036A1 true ES2390036A1 (en) | 2012-11-06 |
| ES2390036B1 ES2390036B1 (en) | 2013-07-12 |
Family
ID=46145398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201001503A Expired - Fee Related ES2390036B1 (en) | 2010-11-25 | 2010-11-25 | TWO-TIME EXPLOSION ENGINE WITH COMBINED INJECTION |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2390036B1 (en) |
| WO (1) | WO2012069674A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3821115B1 (en) * | 2018-07-11 | 2022-04-20 | Hypertec Solution S.r.l. | Two-stroke internal combustion engine and relative actuation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779581A (en) * | 1987-10-26 | 1988-10-25 | Outboard Marine Corporation | Dual fuel injection system for two stroke internal combustion engine |
| US5251582A (en) * | 1990-11-28 | 1993-10-12 | Yamaha Hatsudoki Kabushiki Kaisha | Starting fuel system for engine |
| US20010018900A1 (en) * | 2000-03-03 | 2001-09-06 | Kawasaki Jukogyo Kabushiki Kaisha | Fuel controlling apparartus for internal combustion engine |
| US6338327B1 (en) * | 1999-03-29 | 2002-01-15 | Fuji Jukogyo Kabushiki Kaisha | Combustion chamber structure of in-cylinder direct fuel injection engine |
| US20030116107A1 (en) * | 1999-02-05 | 2003-06-26 | Franz Laimbock | Two-stroke internal combustion engine with crankcase scavenging |
| US20060272599A1 (en) * | 2005-06-02 | 2006-12-07 | Johnson Daniel J | Multi-location fuel injection system |
| WO2010114438A1 (en) * | 2009-03-31 | 2010-10-07 | Husqvarna Ab | Two-stroke internal combustion engine |
-
2010
- 2010-11-25 ES ES201001503A patent/ES2390036B1/en not_active Expired - Fee Related
-
2011
- 2011-11-23 WO PCT/ES2011/000337 patent/WO2012069674A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779581A (en) * | 1987-10-26 | 1988-10-25 | Outboard Marine Corporation | Dual fuel injection system for two stroke internal combustion engine |
| US5251582A (en) * | 1990-11-28 | 1993-10-12 | Yamaha Hatsudoki Kabushiki Kaisha | Starting fuel system for engine |
| US20030116107A1 (en) * | 1999-02-05 | 2003-06-26 | Franz Laimbock | Two-stroke internal combustion engine with crankcase scavenging |
| US6338327B1 (en) * | 1999-03-29 | 2002-01-15 | Fuji Jukogyo Kabushiki Kaisha | Combustion chamber structure of in-cylinder direct fuel injection engine |
| US20010018900A1 (en) * | 2000-03-03 | 2001-09-06 | Kawasaki Jukogyo Kabushiki Kaisha | Fuel controlling apparartus for internal combustion engine |
| US20060272599A1 (en) * | 2005-06-02 | 2006-12-07 | Johnson Daniel J | Multi-location fuel injection system |
| WO2010114438A1 (en) * | 2009-03-31 | 2010-10-07 | Husqvarna Ab | Two-stroke internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2390036B1 (en) | 2013-07-12 |
| WO2012069674A1 (en) | 2012-05-31 |
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