FR2465074A1 - INTERNAL COMBUSTION, CONTROLLED IGNITION ENGINE FOR OPERATING WITH POOR CARBIDE MIXTURE - Google Patents
INTERNAL COMBUSTION, CONTROLLED IGNITION ENGINE FOR OPERATING WITH POOR CARBIDE MIXTURE Download PDFInfo
- Publication number
- FR2465074A1 FR2465074A1 FR8019276A FR8019276A FR2465074A1 FR 2465074 A1 FR2465074 A1 FR 2465074A1 FR 8019276 A FR8019276 A FR 8019276A FR 8019276 A FR8019276 A FR 8019276A FR 2465074 A1 FR2465074 A1 FR 2465074A1
- Authority
- FR
- France
- Prior art keywords
- combustion chamber
- poor
- internal combustion
- engine
- combustion
- 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
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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/12—Engines characterised by precombustion chambers with positive ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/02—Arrangements having two or more sparking plugs
-
- 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
- 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
- F02B2023/085—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition using several spark plugs per cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
-
- 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)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
CE MOTEUR ENDOTHERMIQUE A ALLUMAGE COMMANDE CAPABLE DE FONCTIONNER AVEC DES MELANGES DE COMBUSTIBLE PAUVRES COMPREND UNE CHAMBRE DE COMBUSTION PRINCIPALE8, UNE PRECHAMBRE DE COMBUSTION 12 QUI COMMUNIQUE AVEC LA CHAMBRE DE COMBUSTION PRINCIPALE 8 ET DEUX BOUGIES D'ALLUMAGE 14 ET 16 DISPOSEES RESPECTIVEMENT DANS LA PRECHAMBRE DE COMBUSTION 12 ET DANS LA CHAMBRE DE COMBUSTION PRINCIPALE8.THIS ENDOTHERMIC IGNITION ENGINE WITH CONTROLLED IGNITION TO OPERATE WITH POOR FUEL MIXTURES INCLUDES A MAIN COMBUSTION CHAMBER8, A COMBUSTION CHAMBER 12 WHICH COMMUNICATES WITH THE MAIN COMBUSTION CHAMBER 8 AND TWO SPARK PLUGS 14 AND 16 DISPOSED RESPECTIVELY IN THE PRE-CHAMBER COMBUSTION 12 AND IN THE MAIN COMBUSTION CHAMBER8.
Description
La présente invention se rapporte à un moteurThe present invention relates to an engine
endothermique à cycle Beau de Rochas (ou Otto) à alluma- endothermic cycle Beau de Rochas (or Otto) to
ge commandé.controlled age.
Il a déjà été proposé (voir demande de bre- It has already been proposed (see application for
vet français no 78.36 899 du 29/12/1978) de réaliser French clothing no 78.36 899 of 29/12/1978) to make
un moteur à combustion interne à allumage commandé com- a spark ignition internal combustion engine
prenant, pour chaque cylindre du moteur, une chambre de combustion principale, une préchambre do combustion qui communique avec la chambre de combustion principale et taking, for each cylinder of the engine, a main combustion chamber, a prechamber of combustion which communicates with the main combustion chamber and
une bougie d'allunage disposée dans la préchambre de com- a candle of allunage arranged in the prechambre of com-
bustion.bustion.
Des expériences pratiques de laboratoire ef- Practical laboratory experiments ef-
fectuées par la demanderesse sur certains moteurs du ty- made by the plaintiff on certain engines of the type
pe précité ont démontré que ces moteurs, tout en assu- aforementioned have demonstrated that these engines, while ensuring
rant une réduction des émissions nocives dans les gaz reducing harmful emissions in gases
d'échappement, ne présentent pas un fonctionnement ré- exhaust, do not show a satisfactory
gulier dans toutes les conditions de régime. gulier in all diet conditions.
Pour remédier à cet inconvénient, l'invention To remedy this drawback, the invention
a pour objet un moteur à combustion interne du type spé- relates to an internal combustion engine of the special type
cifié plus haut, caractérisé en.e qu'il comprend en ou- cified above, characterized in that it includes in
tre une bougie d'allumage disposée dans ladite chambre de be a spark plug disposed in said chamber of
combustion principale.main combustion.
D'autres buts et avantages de l'invention Other purposes and advantages of the invention
seront mieux compris à la lecture de la description qui will be better understood by reading the description that
va suivre} d'un exemple non limitatif de réalisation et en se référant au dessin annexé qui illustre en coupe will follow} of a nonlimiting example of embodiment and with reference to the accompanying drawing which illustrates in section
un détail du moteur suivant l'invention. a detail of the engine according to the invention.
Le moteur suivant l'invention comprend un bloc I dans lequel est formé au moins un cylindre 2 l'intérieur duquel coulisse un piston 3 muni d'un axe 4 The engine according to the invention comprises a block I in which is formed at least one cylinder 2 inside which slides a piston 3 provided with an axis 4
pour l'articulation d'une extrémité d'une bielle 5. for the articulation of an end of a connecting rod 5.
Le moteur comprend en outre une culasse 6 montée sur le bloc 1 avec interposition d'une garniture d'étanchéité 7 et qui présente une surface 6a dirigée The engine further comprises a cylinder head 6 mounted on the block 1 with the interposition of a seal 7 and having a surface 6a directed
vers le cylindre 1.towards the cylinder 1.
Face au cylindre 1, la surface 6a est munie d'une cavité 6b qui définit, en combinaison avec la surface supérieure de la t9te du piston 39 une chambre Facing the cylinder 1, the surface 6a is provided with a cavity 6b which defines, in combination with the upper surface of the piston head 39, a chamber
de combustion principale 8.main combustion 8.
La paroi de la cavité 6b présente à son tour une cavité 9 dans laquelle est emmanché à force un corps The wall of the cavity 6b in turn has a cavity 9 in which is forced by a body
sensiblement cylindrique qui présente une cavité in- substantially cylindrical which has a hollow cavity
térieure 11 définissant une préchambre de combustion 12. 11 defining a prechamber 12.
La préchambre de combustion 12 communique avec la chambre de combustion principale 8 à travers un trou 13 ménagé dans l'extrémité du corps cylindrique The pre-combustion chamber 12 communicates with the main combustion chamber 8 through a hole 13 formed in the end of the cylindrical body
qui est dirigée vers la chambre de combustion prin- which is directed to the primary combustion chamber
cipale 8.Cipal 8.
Le moteur comprend en outre une première bou- The engine further includes a first
gie d'allumage 14 vissée à l'intérieur d'un logement 15 et dont une extrémité fait saillie à l'intérieur de la cavité 11, dans une position adjacente à l'extrémité 14 ignition screw inside a housing 15 and one end protrudes inside the cavity 11, in a position adjacent to the end
du corps 10 qui est à l'opposé du trou 13. of the body 10 which is opposite the hole 13.
Naturellement, la préchambre de combustion 12 pourrait 8tre directement venue de fonderie dans la Naturally, the prechamber of combustion 12 could be directly from the foundry in the
culasse 6 du moteur.cylinder head 6 of the engine.
Le moteur comprend en outre une deuxième bou- The engine further includes a second
gie d'allumage 16 disposée au droit de la chambre de com- ignition coil 16 arranged in the chamber of the
bustion principale 8. La bougie 16 est vissée dans un logement 17 ménagé dans la culasse 6 et elle présente 8. The spark plug 16 is screwed into a housing 17 formed in the cylinder head 6 and it has
son extrémité active en saillie à l'intérieur de la ca- its active end protruding inside the body
vité 6bp en un point diamétralement opposé par rapport 6bp at a point diametrically opposite to
au trou 13 qui met la préchambre de combustion en commu- at hole 13 which puts the prechamber of combustion into
nication avec la chambre de combustion principale 8. nication with the main combustion chamber 8.
Le moteur décrit plus haut est en mesure de The engine described above is able to
fonctionner avec des mélanges air/essence pauvres, c'est- operate with poor air / fuel mixtures, that is,
à-dire avec des valeurs du rapport air/essence supérieu- ie with higher air / fuel ratio values
res aux valeurs maxima qui sont acceptables dans les mo- to the maximum values which are acceptable in the
teurs normaux à allumage commandé. normal spark ignition engines.
Pendant la phase de compression, l'air in- During the compression phase, the air
troduit à l'intérieur de la préchambre de combustion 12 troduced inside the prechamber of combustion 12
acquiert une forte turbulence en permettant ainsi l'al- acquires a strong turbulence, thus allowing the
lumage du mélange pauvre à l'intérieur de cette précham- the poor mixture within this prechamber
bre. Cette turbulence est favorisée par le fait que l'air atteint l'intérieur de la préchambre de combustion 12 en ber. This turbulence is favored by the fact that the air reaches the interior of the prechamber of combustion 12 in
passant par le trou 13 qui présente une section étranglée. passing through the hole 13 which has a constricted section.
Après l'allumage du mélange à l'intérieur de la pr6cham- bre de combustionl29 la différence de pression existant entre la préchambre de combustion 12 et la chambre de combustion principale 8 engendre un fort jet de flamme After ignition of the mixture inside the combustion chamber, the pressure difference between the combustion chamber 12 and the main combustion chamber 8 generates a strong flame jet.
à haute énergie qui est projeté de la préchambre de com- high energy that is projected from the precombustion chamber
bustion 12 dans la chambre de combustion principale 8S bustion 12 in the main combustion chamber 8S
en provoquant on m9me temps une augmentation de la tur- at the same time causing an increase in tur-
bulence du mélange contenu dans la chambre de combustion Bulence of the mixture contained in the combustion chamber
principale 8. Dans cette chambre de combustion princi- 8. In this main combustion chamber
pale, il se crée des points d'amorçage de l'allumage dans les zones de la cavité 6b contre lesquelles le jet de blade, ignition points are created in the areas of the cavity 6b against which the jet of
flamme bute.flame stumbles.
L'allumage provoqué par la bougie 16 favori- The ignition caused by the candle 16 favors
se encore l'allumage et abrège le temps nécessaire pour ignition and shorten the time required for
la combustion, en faisant ainsi en sorte que cette com- combustion, thereby ensuring that this
bustion soit terminée à un instant o le piston 3 ne s'est pas encore excessivement éloigné du point mort bustion be completed at a time when the piston 3 has not yet moved excessively from neutral
haut. En m9me temps, on obtient une réduction de la quan- above. At the same time, we obtain a reduction in the quantity
tité d'imbriflés dans les gaz d'échappement émis par le moteur. in the exhaust gases emitted by the engine.
Bien entendu, l'homme de l'art pourra appor- Of course, those skilled in the art will be able to
ter diverses modifications et variantes au dispositif qui vient d'gtre décrit uniquement à titre d'exemple non various modifications and variations to the device which has just been described by way of example only.
limitatif sans pour cela sortir du cadre de l'invention. limiting without departing from the scope of the invention.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT68773/79A IT1165702B (en) | 1979-09-06 | 1979-09-06 | EIGHT CYCLE ENDOTHERMAL MOTOR WITH IGNITION COMMANDED ABLE TO OPERATE MIXED EXTRAMAGRA |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2465074A1 true FR2465074A1 (en) | 1981-03-20 |
| FR2465074B1 FR2465074B1 (en) | 1986-04-04 |
Family
ID=11310542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8019276A Expired FR2465074B1 (en) | 1979-09-06 | 1980-09-05 | INTERNAL COMBUSTION AND CONTROLLED IGNITION ENGINE FOR OPERATION WITH A POOR FUEL MIXTURE |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5696115A (en) |
| DE (1) | DE8023753U1 (en) |
| FR (1) | FR2465074B1 (en) |
| GB (1) | GB2058910A (en) |
| IT (1) | IT1165702B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063134B2 (en) * | 1985-12-10 | 1994-01-12 | いすゞ自動車株式会社 | Spark Assist Diesel Engine Combustion Chamber |
| EP3453856B1 (en) * | 2017-09-08 | 2019-10-16 | MASERATI S.p.A. | Gasoline internal combustion engine, with a combustion pre-chamber and two spark plugs |
| CN108590871A (en) * | 2018-05-29 | 2018-09-28 | 重庆隆鑫发动机有限公司 | The cylinder head and aero-engine of heavy fuel burning engine |
| CN108757203A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
| DE102022207299A1 (en) | 2022-07-18 | 2024-01-18 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method and device for controlling an internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB773700A (en) * | 1900-01-01 | |||
| FR758784A (en) * | 1932-04-30 | 1934-01-23 | Improvements to internal combustion engines | |
| FR2037371A5 (en) * | 1969-02-11 | 1970-12-31 | Karlovitz Bela | |
| DE2843119A1 (en) * | 1977-10-03 | 1979-04-05 | Nippon Soken | COMBUSTION ENGINE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625947B2 (en) * | 1973-05-16 | 1981-06-16 |
-
1979
- 1979-09-06 IT IT68773/79A patent/IT1165702B/en active
-
1980
- 1980-09-02 GB GB8028233A patent/GB2058910A/en not_active Withdrawn
- 1980-09-04 JP JP12291780A patent/JPS5696115A/en active Pending
- 1980-09-05 FR FR8019276A patent/FR2465074B1/en not_active Expired
- 1980-09-05 DE DE19808023753U patent/DE8023753U1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB773700A (en) * | 1900-01-01 | |||
| FR758784A (en) * | 1932-04-30 | 1934-01-23 | Improvements to internal combustion engines | |
| FR2037371A5 (en) * | 1969-02-11 | 1970-12-31 | Karlovitz Bela | |
| DE2843119A1 (en) * | 1977-10-03 | 1979-04-05 | Nippon Soken | COMBUSTION ENGINE |
Non-Patent Citations (1)
| Title |
|---|
| EXBK/79 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2465074B1 (en) | 1986-04-04 |
| GB2058910A (en) | 1981-04-15 |
| DE8023753U1 (en) | 1981-08-20 |
| JPS5696115A (en) | 1981-08-04 |
| IT1165702B (en) | 1987-04-22 |
| IT7968773A0 (en) | 1979-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |