EP1378641A2 - Low pollution two stroke and four stroke engine with scavenging and supercharging - Google Patents
Low pollution two stroke and four stroke engine with scavenging and supercharging Download PDFInfo
- Publication number
- EP1378641A2 EP1378641A2 EP20030352008 EP03352008A EP1378641A2 EP 1378641 A2 EP1378641 A2 EP 1378641A2 EP 20030352008 EP20030352008 EP 20030352008 EP 03352008 A EP03352008 A EP 03352008A EP 1378641 A2 EP1378641 A2 EP 1378641A2
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- EP
- European Patent Office
- Prior art keywords
- piston
- cylinder
- chamber
- crown
- valves
- 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.)
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Classifications
-
- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
- F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
- F02B33/10—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder
- F02B33/14—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder working and pumping pistons forming stepped piston
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- 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
-
- 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
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- 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
- F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
- F02B25/22—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 by forming air cushion between charge and combustion residues
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- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
- F02B33/26—Four-stroke engines characterised by having crankcase pumps
Definitions
- FIGURE 1 A first figure.
- the Piston (6) allows, by releasing the lights, the transfer into the cylinder of Fresh gas precompressed in (4) in the pump housing.
- the inlet valves (C3) of the chamber (5) close, the pressures downstream and upstream of these valves (C3) balancing, the valves (C2) for fresh air intake of the chamber (2) are closed.
- the valves (C1) for admitting the Fresh Gas mixture from the pump housing (4) are closed.
- a Clean Air cap represented by the arrow (AP) obstructs the Exhaust light (3) under the effect of the exhaust return pressure wave (arrow GB).
- Fresh gases (arrow GF) do not can no longer mix with burnt gases (GB), and invade the Combustion chamber (1) in repelling pure air.
- the Piston (6) compresses the Fresh Gases in (1), creates a depression in (2) and (4), causing the opening of the corresponding valves (C1) and (C2) and therefore the filling with Fresh Air in the chamber (2), and with a mixture of Fresh Gas from the pump housing (4).
- the Piston (6) descends under the thrust of the gases which expand in (1).
- the lights (8) of the crown and (9) of the cylinder no longer communicate: there follows a depression in the chamber (5) which causes the opening of its valves (C3) and the filling with Fresh Gas mixture of this bedroom.
- the invention applied to the 4-stroke engine improves the evacuation of burnt gases in phase Exhaust.
- the Combustion Chamber is swept by Clean Air under pressure entering through the transfer lights, discharging Burnt Gases into the atmosphere through the Exhaust valve before being driven back by the Piston.
- the Fresh Gas admitted by the intake valve into the combustion are completed at the bottom dead center by a supply of pressurized pure air springing from the transfer lights, thus ensuring optimal filling of the cylinder.
- the invention makes it possible to improve the cleanliness, the power and the efficiency of 4-Stroke engines, positive ignition and Diesel. It is characterized by a Piston with crown (D3) evolving in a cylinder (D8) and a cylinder (D9), forming with them an Annular chamber (D1) admitting Clean Air via the valves (C19) when the Piston (D3) rises, and compressing it during its descent, then transferring it to the Combustion chamber (D2), the cap of the Piston (D3) discovering the transfer lights (T1) shortly before passing the bottom dead center, allowing thus in the intake phase a better filling of the cylinder and in the exhaust phase a improved evacuation of burnt gases.
- the diameter of the Piston Skirt which has a sealing segment at its base, is less than the diameter of the piston head, which has 2 or 3 segments.
- the cylinder (D8) is completed by a smaller diameter cylinder (D9) in which slides the Piston Skirt (D3), forming with it an Annular precompression chamber.
- the transfer lights (T1) are discovered by the Piston in the Exhaust phase after the opening of the exhaust valve.
- the Pure Air Compression Chamber through a air filter, communicates with the atmosphere through valves regulating its supply.
- the piston (D3) discovers the transfer lights (T1) allowing with Clean Air compressed in (D1) to invade the combustion chamber (D2) and completes the intake Fresh Gas entering through the inlet valve (D7) then open.
- the exhaust (D6) and inlet (D7) valves are closed. Gas Fees allowed previously are compressed in (D2).
- the piston (D3) going up creates a depression in (D1), opening the valves (C19) and allowing the filling of the Annular chamber (D1) with Pure Air.
- the Piston at the end of expansion, discovers the lights (T1):
- the compressed air in (D1) enters the Combustion chamber (D2) and pushes the Burned Gases towards the atmosphere through the Exhaust valve ( D6) already open.
- the piston during its ascent, completes the evacuation of burnt gases and clean air.
- the number, shape, location of the transfer lights can vary in order to obtain maximum efficiency by modifying the distribution diagrams. It is the same with regard to the volumes of the Annular chamber and of the Piston with crown.
- the device can be used as an air compressor on 4-stroke engines, it is then characterized by a Piston with crown (D3) evolving in a cylinder (D8) and a cylinder (D9), forming with these an Annular chamber (D1) admitting pure air by means of valves (C19) during of the piston rise (D3), and compressing it during its descent to supply an external tank provided with a non-return valve, by means of transfer passages leading to an external pipe supplying this tank, the engine operating then as a conventional engine, and the invention as an integrated air compressor.
- the piston differs from the first model, by its simple crown devoid of lights, which may or may not have a segment, depending on the option chosen. It evolves in a cylinder adapted comprising, in its lower part, an annular chamber in which are machined transfers intended for the evacuation of burnt gases controlled by the crown of the piston which, at bottom dead center, retains these gases in this sufficiently large chamber to relax them and allow fresh gas to enter the combustion chamber precompressed in the motor pump housing, then, during its ascent, retains these fresh gases in the combustion chamber via the burnt gases, which are released in a specific area, for the best performance of the engine, shortly before or shortly after the closing of the combustion chamber exhaust light, by the cap of the piston, to be forcefully driven into the atmosphere in the descending phase.
- the expansion of the piston is extended to bottom dead center by the transfer of the burnt gases in the annular chamber where they apply pressure to the regrowing crown, by its underside, the gases from the previous combustion to the atmosphere.
- the efficiency is increased by a better filling of the cylinder, which, in phase intake is under vacuum until the lights communicating with the lower cylinder of the piston-pump, which then in compression propels clean air or injected fuel into the combustion chamber, allowing an intake speed and optimal filling.
- combustion is improved by the pure air propelled into the chamber combustion, as before, it sweeps the cylinder and promotes the oxidation of gas.
- This piston-pump system is also suitable for Diesel and Petrol two-stroke engines because, capable send a sufficient volume of air into the combustion chamber without the aid of a compressor or valves while retaining the conventional pressure lubrication system with four-stroke engines.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
L'invention vise à réduire la pollution des moteurs 2 temps et à en améliorer le remplissage en Gaz
Frais. Le dispositif selon l'invention consiste essentiellement en un Piston à couronne évoluant
dans un cylindre classique où est usinée une chambre Annulaire que divise la couronne du Piston
en 2 volumes variables (5) et (2), suivant sa position. La Jupe du Piston est longue afin d'assurer
l'étanchéité de la chambre Annulaire (2) par l'intermédiaire d'un segment inférieur. Dans cette
chambre sont aspirés, comprimés puis expulsés alternativement l'Air Pur et le mélange en Gaz
Frais. Le Dispositif est caractérisé par le fait que les lumières de transfert d'Air Pur (2b) sont
découvertes par le Piston avant les lumières de transfert de Gaz Frais (4b). Un seul carburateur peut
alimenter la chambre (5) et le carter pompe en Gaz Frais, en reliant par une tubulure extérieure (en
pointillé sur le dessin) leurs 2 pipes d'admission en une seule. Le Bas cylindre (11) est démontable
afin de permettre le montage du Piston. Le graissage de la chambre Annulaire est réalisé par le
mélange de Gaz Frais. Le Dispositif suivant est caractérisé par le fait que le Piston comporte 4
segments dont 1 sur la calotte, 2 sur la couronne et 1 sur la jupe, celui-ci étant facultatif, les
pressions existantes entre le carter Pompe (4) et la chambre (2) s'équilibrant en s'opposant.
Au Point Mort Bas, le Piston (6) permet en dégageant les lumières, le transfert dans le cylindre des Gaz Frais précompressés en (4) dans le carter pompe.At bottom dead center, the Piston (6) allows, by releasing the lights, the transfer into the cylinder of Fresh gas precompressed in (4) in the pump housing.
Simultanément se termine l'admission de mélange de Gaz Frais en (5).At the same time, the admission of Mixed Fresh Gas ends in (5).
Les clapets (C3) d'admission de la chambre (5) se ferment, les pressions en aval et amont de ces clapets (C3) s'équilibrant, les clapets (C2) d'admission en Air Pur de la chambre (2) sont fermés.The inlet valves (C3) of the chamber (5) close, the pressures downstream and upstream of these valves (C3) balancing, the valves (C2) for fresh air intake of the chamber (2) are closed.
Les clapets (C1) d'admission en mélange de Gaz Frais du carter pompe (4) sont fermés. Un bouchon d'Air Pur représenté par la flèche (AP) obstrue la lumière d'Echappement (3) sous l'effet de l'onde de Pression de retour de l'échappement (flèche GB). Les Gaz Frais (flèche GF) ne peuvent plus se mélanger aux Gaz brûlés (GB), et envahissent la chambre de Combustion (1) en repoussant l'Air Pur.The valves (C1) for admitting the Fresh Gas mixture from the pump housing (4) are closed. A Clean Air cap represented by the arrow (AP) obstructs the Exhaust light (3) under the effect of the exhaust return pressure wave (arrow GB). Fresh gases (arrow GF) do not can no longer mix with burnt gases (GB), and invade the Combustion chamber (1) in repelling pure air.
Au cours de sa remontée dans le cylindre, le Piston (6) comprime les Gaz Frais en (1), crée une dépression en (2) et (4), provoquant l'ouverture des clapets (C1) et (C2) correspondant et donc le remplissage en Air Pur de la chambre (2), et en mélange de Gaz Frais du carter pompe (4).During its ascent in the cylinder, the Piston (6) compresses the Fresh Gases in (1), creates a depression in (2) and (4), causing the opening of the corresponding valves (C1) and (C2) and therefore the filling with Fresh Air in the chamber (2), and with a mixture of Fresh Gas from the pump housing (4).
Simultanément, il précomprime les Gaz Frais admis précédemment dans la chambre (5), ses clapets (C3) s'étant fermés sous l'effet de la pression.Simultaneously, it pre-compresses the Fresh Gas previously admitted in the room (5), its valves (C3) having closed under the effect of pressure.
Au Point Mort Haut, l'allumage provoqué par la bougie (7) enflamme les Gaz Frais compréssés en (1) provoquant la détente du Piston (6). L'admission d'Air Pur est terminée en (2), les clapets (C2) de cette chambre sont fermés, la dépression ayant disparue. En (4), le remplissage de mélange en Gaz Frais du carter pompe est également terminé par les clapets (C1) qui se sont refermés sous l'effet de la pression des Gaz Frais précomprimés dans la chambre du cylindre (5) et transférés par les lumières (8) de la couronne du Piston (6) et (9) du cylindre. L'alimentation est ainsi optimale, le volume de la chambre (5) s'ajoutant à celui du carter pompe (4).At Top Dead Center, the ignition caused by the spark plug (7) ignites the Fresh Gases compressed in (1) causing the piston (6) to relax. The admission of Air Pur is completed in (2), the valves (C2) of this room are closed, the depression having disappeared. In (4), filling the mixture with Fresh gas from the pump housing is also terminated by the valves (C1) which have closed under the effect of the pressure of the precompressed fresh gases in the cylinder chamber (5) and transferred by the lights (8) of the crown of the piston (6) and (9) of the cylinder. The food is thus optimal, the volume of the chamber (5) added to that of the pump housing (4).
Le Piston (6) descend sous la poussée des Gaz qui se détendent en (1). Les lumières (8) de la couronne et (9) du cylindre ne communiquent plus : s'ensuit une dépression dans la chambre (5) qui provoque l'ouverture de ses clapets (C3) et le remplissage en mélange de Gaz Frais de cette chambre.The Piston (6) descends under the thrust of the gases which expand in (1). The lights (8) of the crown and (9) of the cylinder no longer communicate: there follows a depression in the chamber (5) which causes the opening of its valves (C3) and the filling with Fresh Gas mixture of this bedroom.
Simultanément, l'Air Pur précédemment admis en (2) est comprimé, les clapets (C2) de cette chambre étant maintenus fermés par cette même pression. Les Gaz Frais précédemment admis dans le carter pompe (4) sont également en précompression.Simultaneously, the Pure Air previously admitted in (2) is compressed, the valves (C2) of this chamber being kept closed by this same pressure. Fresh Gas previously admitted in the pump housing (4) are also precompressed.
En fin de détente le Piston (6) libère successivement :
L'invention appliquée au moteur à 4 Temps, améliore l'évacuation des Gaz Brûlés en phase Echappement. La chambre de Combustion est balayée par l'Air Pur sous pression pénétrant par les lumières de transfert, refoulant les Gaz Brûlés dans l'atmosphère par la soupape d'Echappement avant d'être lui-même refoulé par le Piston.The invention applied to the 4-stroke engine improves the evacuation of burnt gases in phase Exhaust. The Combustion Chamber is swept by Clean Air under pressure entering through the transfer lights, discharging Burnt Gases into the atmosphere through the Exhaust valve before being driven back by the Piston.
En phase admission, les Gaz Frais admis par la soupape d'admission dans la chambre de combustion sont complétés au passage du Point Mort Bas par une arrivée d'Air Pur sous pression jaillissant des lumières de transfert, assurant ainsi un remplissage optimal du cylindre.In the intake phase, the Fresh Gas admitted by the intake valve into the combustion are completed at the bottom dead center by a supply of pressurized pure air springing from the transfer lights, thus ensuring optimal filling of the cylinder.
L'invention permet d'améliorer la propreté, la puissance et le rendement des moteurs à 4 Temps, à allumage commandé et Diesel. Elle est caractérisée par un Piston à couronne (D3) évoluant dans un cylindre (D8) et un cylindre (D9), formant avec ceux-ci une chambre Annulaire (D1) admettant de l'Air Pur par l'intermédiaire des clapets (C19) lors de la montée du Piston (D3), et le comprimant lors de sa descente, puis le transférant dans la chambre de Combustion (D2), la calotte du Piston (D3) découvrant les lumières de transfert (T1) peu avant le passage du Point Mort Bas, permettant ainsi en phase admission un meilleur remplissage du cylindre et en phase Echappement une amélioration de l'évacuation des Gaz Brûlés. Le diamètre de la Jupe du Piston, qui possède un segment d'étanchéité à sa base, est inférieur au diamètre de la tête du piston, qui, elle, possède 2 ou 3 segments. Le cylindre (D8) est complété par un cylindre de diamètre inférieur (D9) dans lequel coulisse la Jupe du Piston (D3), formant avec celui-ci une chambre Annulaire de précompression. Les lumières de transfert (T1) sont découvertes par le Piston dans la phase Echappement après l'ouverture de la soupape d'Echappement. La chambre de Compression d'Air Pur, au travers d'un filtre à air, communique avec l'atmosphère par l'intermédiaire de clapets régulant son alimentation.The invention makes it possible to improve the cleanliness, the power and the efficiency of 4-Stroke engines, positive ignition and Diesel. It is characterized by a Piston with crown (D3) evolving in a cylinder (D8) and a cylinder (D9), forming with them an Annular chamber (D1) admitting Clean Air via the valves (C19) when the Piston (D3) rises, and compressing it during its descent, then transferring it to the Combustion chamber (D2), the cap of the Piston (D3) discovering the transfer lights (T1) shortly before passing the bottom dead center, allowing thus in the intake phase a better filling of the cylinder and in the exhaust phase a improved evacuation of burnt gases. The diameter of the Piston Skirt, which has a sealing segment at its base, is less than the diameter of the piston head, which has 2 or 3 segments. The cylinder (D8) is completed by a smaller diameter cylinder (D9) in which slides the Piston Skirt (D3), forming with it an Annular precompression chamber. The transfer lights (T1) are discovered by the Piston in the Exhaust phase after the opening of the exhaust valve. The Pure Air Compression Chamber, through a air filter, communicates with the atmosphere through valves regulating its supply.
Le principe de fonctionnement, visualisé par les Figures 5, Sa et 5b est ci dessous commentéThe operating principle, shown in Figures 5, Sa and 5b is discussed below
En passant par le Point Mort Bas, le Piston (D3) découvre les lumières de transfert (T1) permettant à l'Air Pur compressé en (D1) d'envahir la chambre de combustion (D2) et complète l'admission des Gaz Frais pénétrant par la soupape d'admission (D7) alors ouverte.Passing through the bottom dead center, the piston (D3) discovers the transfer lights (T1) allowing with Clean Air compressed in (D1) to invade the combustion chamber (D2) and completes the intake Fresh Gas entering through the inlet valve (D7) then open.
Les soupapes d'échappemsnt (D6) et d'admission (D7) sont fermées. Les Gaz Frais admis précédemment sont comprimés en (D2). Le Piston (D3) en remontant crée une dépression en (D1), ouvrant les clapets (C19) et permettant le remplissage en Air Pur de la chambre Annulaire (D1).The exhaust (D6) and inlet (D7) valves are closed. Gas Fees allowed previously are compressed in (D2). The piston (D3) going up creates a depression in (D1), opening the valves (C19) and allowing the filling of the Annular chamber (D1) with Pure Air.
Le Piston, en fin de détente, découvre les lumières (T1) : L'air comprimé en (D1) pénètre dans la
chambre de Combustion (D2) et repousse les Gaz brûlés vers l'atmosphère au travers de la soupape
d'Echappement (D6) déjà ouverte. Le Piston, au cours de sa remontée, termine l'évacuation des
Gaz brûlés et de l'air Pur. Le nombre, la forme, l'emplacement des lumières de transfert peuvent
varier dans le but d'obtenir un rendement maximum en modifiant les diagrammes de distribution. Il
en est de même en ce qui concerne les volumes de la chambre Annulaire et du Piston à couronne.
Le Dispositif peut être utilisé comme compresseur d'air sur les moteurs à 4 Temps, il est alors
caractérisé par un Piston à couronne (D3) évoluant dans un cylindre (D8) et un cylindre (D9),
formant avec ceux-ci une chambre Annulaire (D1) admettant de l'air pur par l'intermédiaire de
clapets (C19) lors de la montée du Piston (D3), et le comprimant lors de sa descente pour alimenter
un réservoir extérieur muni d'un clapet anti-retour, par l'intermédiaire de passages de transfert
débouchant sur une canalisation extérieure alimentant ce réservoir, le moteur fonctionnant alors
comme un moteur classique, et l'invention comme un compresseur d'air intégré. The Piston, at the end of expansion, discovers the lights (T1): The compressed air in (D1) enters the Combustion chamber (D2) and pushes the Burned Gases towards the atmosphere through the Exhaust valve ( D6) already open. The piston, during its ascent, completes the evacuation of burnt gases and clean air. The number, shape, location of the transfer lights can vary in order to obtain maximum efficiency by modifying the distribution diagrams. It is the same with regard to the volumes of the Annular chamber and of the Piston with crown. The device can be used as an air compressor on 4-stroke engines, it is then
characterized by a Piston with crown (D3) evolving in a cylinder (D8) and a cylinder (D9), forming with these an Annular chamber (D1) admitting pure air by means of valves (C19) during of the piston rise (D3), and compressing it during its descent to supply an external tank provided with a non-return valve, by means of transfer passages leading to an external pipe supplying this tank, the engine operating then as a conventional engine, and the invention as an integrated air compressor.
- 1 -1 -
- Chambre de combustion.Combustion chamber.
- 2 -2 -
- Chambre annulaire d'air pur.Annular chamber of fresh air.
- 3 -3 -
- Sortie d'Echappement.Exhaust outlet.
- 4 -4 -
- Carter pompe.Pump housing.
- 5 -5 -
- Chambre annulaire de Gaz Frais.Annular Chamber of Fresh Gas.
- 6 -6 -
- Piston à couronne.Crown piston.
- 7 -7 -
- Bougie.Candle.
- 8 -8 -
- Lumière de la couronne du piston.Piston crown light.
- 9 -9 -
- Passage de transfert du cylindre.Cylinder transfer passage.
- 10 -10 -
- Cylindre Supérieur.moteurUpper cylinder, engine
- 11 -11 -
- Cylindre Inférieur.Lower cylinder.
- 12 -12 -
- Carter bas moteur.Low engine housing.
- 13 -13 -
- Culasse.Cylinder head.
- 14 -14 -
- Bielle.Rod.
- 2b -2b -
- Lumière de transfert d'air pur.Clean air transfer light.
- 4b -4b -
- Lumière transfert de Gaz Frais.Light fresh gas transfer.
- C1 - C3 -C1 - C3 -
- Clapets de Gaz Frais.Fresh Gas Valves.
- C2 -C2 -
- Clapets d'air pur.Clean air valves.
- GB -GB -
- Gaz Brûlés.Burnt gases.
- AP -AP -
- Air Pur.Fresh air.
- GF -GF -
- Gaz Frais.Fresh Gas.
- D1 -D1 -
- Chambre annulaire.Annular chamber.
- D2 -D2 -
- Chambre de combustion.Combustion chamber.
- Tl -Tl -
- Lumières de transferts.Transfer lights.
- D3-D3
- Piston.Piston.
- D4 -D4 -
- Bielle.Rod.
- D5 -D5 -
- Vilebrequin.Crankshaft.
- D6 -D6 -
- Soupape d'Echappement.Exhaust valve.
- D7 -D7 -
- Soupape d'admission.Inlet valve.
- C19 -C19 -
- Clapets.Valves.
- D8 -D8 -
- Cylindre.Cylinder.
- D9 -D9 -
- Cylindre inférieur.Lower cylinder.
- D10 -D10 -
- Carter bas moteur.Low engine housing.
- D11 -D11 -
- Culasse.Cylinder head.
- D12 -D12 -
- Bougie. (ou injecteur. Diesel)Candle. (or injector. Diesel)
Les modifications apportées a l'invention visent essentiellement à en réduire le bruit, la pollution et la consommation suivant un principe de fonctionnement différent du premier moteur 2 temps à piston à couronne.The modifications made to the invention are essentially aimed at reducing noise, pollution and consumption according to a different operating principle from the first 2 stroke crown piston engine.
Le piston diffère du premier modèle, par sa couronne simple dépourvue de lumières, qui est équipé ou non d'un segment, suivant l'option choisie. Il évolue dans un cylindre adapté comportant, dans sa partie inférieure, une chambre annulaire dans laquelle sont usinés des transferts destines à l'évacuation des gaz brûlés contrôlés par la couronne du piston qui, au point mort bas, retient ces gaz dans cette chambre suffisamment volumineuse pour les détendre et permettre, dans la chambre de combustion, l'arrivée de gaz frais précompressés dans le carter pompe du moteur, puis, au cours de sa remontée, retient ces gaz frais dans la chambre de combustion par l'intermédiaire des gaz brûlés, qui sont libérés dans une zone déterminée, pour le meilleur rendement du moteur, peu avant ou peu après la fermeture de la lumière d'échappement de la chambre de combustion, par la calotte du piston, pour être chassé avec force dans l'atmosphère en phase descendante.The piston differs from the first model, by its simple crown devoid of lights, which may or may not have a segment, depending on the option chosen. It evolves in a cylinder adapted comprising, in its lower part, an annular chamber in which are machined transfers intended for the evacuation of burnt gases controlled by the crown of the piston which, at bottom dead center, retains these gases in this sufficiently large chamber to relax them and allow fresh gas to enter the combustion chamber precompressed in the motor pump housing, then, during its ascent, retains these fresh gases in the combustion chamber via the burnt gases, which are released in a specific area, for the best performance of the engine, shortly before or shortly after the closing of the combustion chamber exhaust light, by the cap of the piston, to be forcefully driven into the atmosphere in the descending phase.
La détente du piston est prolongée jusqu'au point mort bas par le transfert des gaz brûlés dans la chambre annulaire où ils appliquent une pression sur la couronne qui repousse, par sa face inférieure, les gaz de la combustion précédente vers l'atmosphère .The expansion of the piston is extended to bottom dead center by the transfer of the burnt gases in the annular chamber where they apply pressure to the regrowing crown, by its underside, the gases from the previous combustion to the atmosphere.
L'onde sonore émise par la combustion des gaz en détente est retenue dans la chambre annulaire où elle est étouffée, le transfert des gaz brûlés vers l'atmosphère se faisant indirectement.The sound wave emitted by the combustion of gases in expansion is retained in the room annular where it is smothered, the transfer of the burnt gases to the atmosphere taking place indirectly.
Sur les moteurs a 4 temps, à injection essence et diesel, l'admission d'air pur ou injecté de carburant peut se faire en totalité par les clapets et transférer dans le cylindre par les lumières des transferts qui sont découverts par la calotte du piston, au passage du point mort bas, permettant ainsi de supprimer la ou les soupapes d'admission avec leur distribution, donc de simplifier le moteur et de diminuer les coûts de fabrication.On 4-stroke petrol and diesel injection engines, the intake of pure or injected air fuel can be done entirely by the valves and transferred to the cylinder by the lights of transfers which are discovered by the cap of the piston, at the passage of the point low death, thereby eliminating the intake valve (s) with their distribution, therefore simplifying the engine and reducing manufacturing costs.
Le rendement est augmenté par un meilleur remplissage du cylindre, qui, en phase admission est en dépression jusqu'à l'ouverture des lumières communiquant avec le cylindre inférieur du piston-pompe, qui, alors en compression, propulse, l'air pur ou injecté de carburant dans la chambre de combustion, permettant une vitesse d'admission et un remplissage optimal.The efficiency is increased by a better filling of the cylinder, which, in phase intake is under vacuum until the lights communicating with the lower cylinder of the piston-pump, which then in compression propels clean air or injected fuel into the combustion chamber, allowing an intake speed and optimal filling.
En phase échappement, la combustion est amélioré par l'air pur propulsé dans la chambre de combustion, comme précedemment, il balaye le cylindre et favorise l'oxydation des gaz. Ce systeme de piston-pompe convient egalement aux moteurs Diesel et Essence deux temps car, capable d'envoyer un Volume d'air suffisant dans la chambre de combustion sans l'aide de compresseur ni de soupapes tout en conservant Le systeme de graissage sous pression classique aux moteurs quatre temps.In the exhaust phase, combustion is improved by the pure air propelled into the chamber combustion, as before, it sweeps the cylinder and promotes the oxidation of gas. This piston-pump system is also suitable for Diesel and Petrol two-stroke engines because, capable send a sufficient volume of air into the combustion chamber without the aid of a compressor or valves while retaining the conventional pressure lubrication system with four-stroke engines.
Claims (26)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/855,627 US20040216705A1 (en) | 2002-04-15 | 2004-05-28 | Thermal 2 stroke engine with reduced pollution and 4 stroke engine with scavenging and volumetric supercharging |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0204698A FR2838478B1 (en) | 2002-04-15 | 2002-04-15 | 2-STROKE THERMAL ENGINE WITH REDUCED POLLUTION AND 4-STROKE WITH SCAN AND VOLUMETRIC SUPPLY |
FR0204698 | 2002-04-15 |
Publications (1)
Publication Number | Publication Date |
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EP1378641A2 true EP1378641A2 (en) | 2004-01-07 |
Family
ID=28459849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20030352008 Withdrawn EP1378641A2 (en) | 2002-04-15 | 2003-04-14 | Low pollution two stroke and four stroke engine with scavenging and supercharging |
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EP (1) | EP1378641A2 (en) |
FR (1) | FR2838478B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111237049A (en) * | 2020-04-14 | 2020-06-05 | 常君辰 | Negative pressure engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2010241402B1 (en) * | 2010-11-12 | 2011-11-24 | Cits Engineering Pty Ltd | Two-Stroke Engine Porting Arrangement |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508391A (en) * | 1946-04-16 | 1950-05-23 | Charles M Huntington | Two-cycle internal-combustion engine |
US3182645A (en) * | 1963-07-24 | 1965-05-11 | Ora E Wilson | Internal combustion engine |
DE2743780A1 (en) * | 1977-09-29 | 1979-04-12 | Fichtel & Sachs Ag | Single cylinder two=stroke engine - has stepped piston smaller at top with annular chamber for mixt. richer than crankcase mixt. |
DE2901815A1 (en) * | 1979-01-18 | 1980-07-31 | Fichtel & Sachs Ag | Four stroke internal combustion engine - has stepped piston to pre-compress different strength mixtures for admission through two valves |
JPS588231A (en) * | 1981-07-07 | 1983-01-18 | Kawasaki Heavy Ind Ltd | Two cycle engine |
DE4007466A1 (en) * | 1990-03-09 | 1991-02-14 | Franz Josef Knott | Reduced emissions two=stroke IC engine - has separately lubricated piston which operates without oil being mixed with fuel |
US6145488A (en) * | 1999-07-15 | 2000-11-14 | Mph Motors, Inc. | Reduced volume scavenging system for two cycle engines |
-
2002
- 2002-04-15 FR FR0204698A patent/FR2838478B1/en not_active Expired - Fee Related
-
2003
- 2003-04-14 EP EP20030352008 patent/EP1378641A2/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111237049A (en) * | 2020-04-14 | 2020-06-05 | 常君辰 | Negative pressure engine |
Also Published As
Publication number | Publication date |
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FR2838478B1 (en) | 2004-05-28 |
FR2838478A1 (en) | 2003-10-17 |
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