BE1001582A3 - Two=stroke petrol or diesel engine - has exhaust port uncovered by piston and compressor in intake - Google Patents
Two=stroke petrol or diesel engine - has exhaust port uncovered by piston and compressor in intake Download PDFInfo
- Publication number
- BE1001582A3 BE1001582A3 BE8800418A BE8800418A BE1001582A3 BE 1001582 A3 BE1001582 A3 BE 1001582A3 BE 8800418 A BE8800418 A BE 8800418A BE 8800418 A BE8800418 A BE 8800418A BE 1001582 A3 BE1001582 A3 BE 1001582A3
- Authority
- BE
- Belgium
- Prior art keywords
- engine
- piston
- compressor
- gases
- intake
- Prior art date
Links
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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
- F02B25/04—Engines having ports both in cylinder head and in cylinder wall 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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The two-stroke petrol or diesel engine with one or more pistons (7) discharges the exhaust gas via a port (4) in each cylinder uncovered.by.the piton. the fresh charge of mixture or air is kep. under pressure in the intake by a compressor (3) and admitted via a valve (5) opening when the port is uncovered. A mechanism (6) can be included to vary the cross-section of the exhaust port with engine speed, while the compressor speed can be varied to regulate the intake pressure.
Description
<Desc/Clms Page number 1>
acteur à combustion interne deux temps à un ou plu- sieurs pistons, essence ou diesel' à haut rendement.
L'invention concerne un moteur comportant un ou plu- sieurs pistons fonctionnant selon le cycle du moteur à deux temps utilisant comme combustible de l'essence ou du mazout et dont les gaz sont admis et expulsés du cylindre à l'aide d'un compresseur.
Les moteurs diesel.ou à essence universellement adoptés par les constructeurs ont l'inconvénient de ne produire qu'un temps moteur sur les quatre temps que comportent leurs cycles. Le moteur à deux temps a un temps moteur sur les deux temps que comporte son cycle, mais son mauvais rendement fait qu'il n'est utilisé que relativement peu et que son application se limite aux engins de petite cylindrée.
La présente invention a pour but de remédier à ces inconvénients. L'invention, telle qu'elle est carac- térisée dans les revendications résoud le problème de rendement du acteur à deux temps tout en y appro- tant d'importantes améliorations comme un meilleur remplissage du cylindre à bas régime comme à haut régime. Ne comportant qu'une soupape par cylindre, sa fabrication s'en trouve simplifiée et sa fiabilité accrue.
Les avantages obtenus grâce à cette invention con- sistent essentiellement en ceci, la puissance au litre est doublee par rapport à un moteur à quatre temps.
Pour le même nombre de temps moteur, son nombre de pistons est réduit de moitié. Comportant presque deux fois moins de pièces son inertie est diminuée ce qui entraîne une diminution substantielle de la consomma- tion à puissance fournie éale.
<Desc/Clms Page number 2>
L'invention est exposée ci-après à l'aide d'un dessin schématise du moteur ne comportant qu'un piston conformément à la présente invention représenté dans une vue en coure transversale suivant l'axe de dépla- cement du piston.
La figure 1 représente un moteur dont le piston 7 animé d'un mouvement de va-et-vient dans le cylindre 8 transmet son mouvement à la bielle 9 qui fait tourner le villebrequin 10. la soupape 5 ne s'ouvre que quand le piston 7 a découvert la lumière 4.
Conformément à la présente invention le cycle de fonctionnement du moteur est tel que le piston 7 est au point mort haut le mélange est comprimé entre le piston 7 et la culasse 11. Les gaz sont enflammés grâce à la bougie 1 pour le moteur à essence ou pour le moteur,diesel, le mazout s'enflamme de lui-même injecté dans l'air porté à haute température. Sous l'effet de la pression, le piston 7 descend, lorsque la tête du piston 7 a découvert la lumière 4; la soupape 5 s'ouvre et le compresseur 3 relié à l'arbre moteur par une courroie montée sur poulie variable de façon à faire varier la pression dans la tubulure 2 chasse les gaz brûlés hors du cylindre 8, et le rempli dé gaz frais.
Pour le moteurà essence, le combustible a déjà été injecté dans l'air se trouvant dans la tubulure 2 par l'injecteur 4, pour réguler la. sortie des gaz d'échappement, la cime 6 obstrue en fonction de la vitesse de l'erbre moteur la lumière 4. Le piston 7 remonte, la soupape 5 se referme et la lumière 4 est recouverte, la compression des.gaz commence dans le cylindre 8, pour le moteur diésel, l'injection du mazout se produit par l'injec- teur 1, arrivé au point mort haut, les gaz s'enflamment et le cycle recommace.
<Desc / Clms Page number 1>
two-stroke internal combustion actor with one or more pistons, petrol or diesel 'with high efficiency.
The invention relates to an engine comprising one or more pistons operating according to the cycle of the two-stroke engine using gasoline or fuel oil as fuel and the gases of which are admitted and expelled from the cylinder using a compressor. .
The diesel or gasoline engines universally adopted by manufacturers have the disadvantage of producing only one engine time out of the four times that comprise their cycles. The two-stroke engine has an engine time over the two times that its cycle involves, but its poor efficiency means that it is used only relatively little and that its application is limited to small-displacement machines.
The present invention aims to remedy these drawbacks. The invention, as it is characterized in the claims, solves the problem of the performance of the two-stage actor while bringing therein significant improvements such as better filling of the cylinder at low speed as at high speed. With only one valve per cylinder, its manufacture is simplified and its reliability increased.
The advantages obtained thanks to this invention consist essentially in this, the power per liter is double compared to a four-stroke engine.
For the same number of engine times, its number of pistons is halved. With almost twice as few parts, its inertia is reduced, which results in a substantial reduction in consumption at equal power.
<Desc / Clms Page number 2>
The invention is set out below with the aid of a diagrammatic drawing of the engine comprising only one piston in accordance with the present invention shown in a view in transverse course along the axis of displacement of the piston.
FIG. 1 represents an engine, the piston 7 of which moves back and forth in the cylinder 8 transmits its movement to the connecting rod 9 which rotates the crankshaft 10. the valve 5 only opens when the piston 7 discovered the light 4.
In accordance with the present invention the engine operating cycle is such that the piston 7 is in top dead center the mixture is compressed between the piston 7 and the cylinder head 11. The gases are ignited by means of the spark plug 1 for the petrol engine or for the diesel engine, the fuel ignites by itself injected into the air brought to high temperature. Under the effect of the pressure, the piston 7 descends, when the head of the piston 7 has discovered the lumen 4; the valve 5 opens and the compressor 3 connected to the motor shaft by a belt mounted on a variable pulley so as to vary the pressure in the manifold 2 drives the burnt gases out of the cylinder 8, and filled it with fresh gas.
For the gasoline engine, the fuel has already been injected into the air in the pipe 2 by the injector 4, to regulate the. exhaust outlet, the crown 6 obstructs depending on the speed of the motor shaft the light 4. The piston 7 rises, the valve 5 closes and the light 4 is covered, the compression of gas begins in the cylinder 8, for the diesel engine, fuel oil is injected by injector 1, which has reached top dead center, the gases ignite and the cycle begins again.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE8800418A BE1001582A3 (en) | 1988-04-14 | 1988-04-14 | Two=stroke petrol or diesel engine - has exhaust port uncovered by piston and compressor in intake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE8800418A BE1001582A3 (en) | 1988-04-14 | 1988-04-14 | Two=stroke petrol or diesel engine - has exhaust port uncovered by piston and compressor in intake |
Publications (1)
Publication Number | Publication Date |
---|---|
BE1001582A3 true BE1001582A3 (en) | 1989-12-12 |
Family
ID=3883360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE8800418A BE1001582A3 (en) | 1988-04-14 | 1988-04-14 | Two=stroke petrol or diesel engine - has exhaust port uncovered by piston and compressor in intake |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE1001582A3 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2346887A1 (en) * | 1973-09-18 | 1975-04-03 | Daimler Benz Ag | Strata mixture type two stroke engine - has valve regulated scavenger |
DE2831860A1 (en) * | 1978-07-20 | 1980-02-07 | Rudolf Dr Wieser | Turbocharged single-cylinder two=stroke IC engine - has cam operated valve in cylinder head timed to overlap opening of exhaust port |
GB2076465A (en) * | 1980-05-23 | 1981-12-02 | Ehrlich Dr Josef | Turbocharged two-stroke engine |
US4388894A (en) * | 1980-09-30 | 1983-06-21 | Yamaha Hatsudoki Kabushiki Kaisha | Two stroke engine having exhaust timing control valve means |
US4391234A (en) * | 1980-12-18 | 1983-07-05 | Bombardier-Rotax G.M.B.H. | Internal combustion engine comprising means for controlling the axial extent of a port in a cylinder |
GB2136875A (en) * | 1983-03-21 | 1984-09-26 | Grow Harlow B | Two stroke internal combustion heat engine and transfer cycle therefor |
GB2175643A (en) * | 1985-05-24 | 1986-12-03 | Orbital Eng Pty | Control of exhaust in ported two-stroke engines |
US4671218A (en) * | 1985-03-11 | 1987-06-09 | Carl Weiland | Two stroke engine with deflector valve |
EP0260582A1 (en) * | 1986-09-13 | 1988-03-23 | Yamaha Motor Co., Ltd. | Exhaust control device of engine |
-
1988
- 1988-04-14 BE BE8800418A patent/BE1001582A3/en not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2346887A1 (en) * | 1973-09-18 | 1975-04-03 | Daimler Benz Ag | Strata mixture type two stroke engine - has valve regulated scavenger |
DE2831860A1 (en) * | 1978-07-20 | 1980-02-07 | Rudolf Dr Wieser | Turbocharged single-cylinder two=stroke IC engine - has cam operated valve in cylinder head timed to overlap opening of exhaust port |
GB2076465A (en) * | 1980-05-23 | 1981-12-02 | Ehrlich Dr Josef | Turbocharged two-stroke engine |
US4388894A (en) * | 1980-09-30 | 1983-06-21 | Yamaha Hatsudoki Kabushiki Kaisha | Two stroke engine having exhaust timing control valve means |
US4391234A (en) * | 1980-12-18 | 1983-07-05 | Bombardier-Rotax G.M.B.H. | Internal combustion engine comprising means for controlling the axial extent of a port in a cylinder |
GB2136875A (en) * | 1983-03-21 | 1984-09-26 | Grow Harlow B | Two stroke internal combustion heat engine and transfer cycle therefor |
US4671218A (en) * | 1985-03-11 | 1987-06-09 | Carl Weiland | Two stroke engine with deflector valve |
GB2175643A (en) * | 1985-05-24 | 1986-12-03 | Orbital Eng Pty | Control of exhaust in ported two-stroke engines |
EP0260582A1 (en) * | 1986-09-13 | 1988-03-23 | Yamaha Motor Co., Ltd. | Exhaust control device of engine |
Non-Patent Citations (1)
Title |
---|
Patent Abstracts of Japan, vol. 4, no. 57 (M-9)(539), 26 avril 1980; & JP-A-5523315 (MASASHI KIDA) 19 fevrier 1980 * |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: HESBOIS PASCAL Effective date: 19900430 |