DE1259634B - Gas-Otto engine - Google Patents
Gas-Otto engineInfo
- Publication number
- DE1259634B DE1259634B DEL47767A DEL0047767A DE1259634B DE 1259634 B DE1259634 B DE 1259634B DE L47767 A DEL47767 A DE L47767A DE L0047767 A DEL0047767 A DE L0047767A DE 1259634 B DE1259634 B DE 1259634B
- Authority
- DE
- Germany
- Prior art keywords
- gas
- gas injection
- combustion chamber
- chamber
- otto engine
- 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.)
- Pending
Links
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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0269—Outwardly opening valves, e.g. poppet valves
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
Gas-Ottomotor Die Erfindung bezieht sich auf einen Gas-Ottomotor, dessen Zylinderkopf je Zylinder ein Gaseinblaseventil aufweist, dem brennraumseitig eine Gaseinblasekammer vorgelagert ist, die zum Brennraum hin offen ist.Gas-Otto engine The invention relates to a gas-Otto engine, the cylinder head of which has a gas injection valve for each cylinder, the one on the combustion chamber side a gas injection chamber is upstream, which is open to the combustion chamber.
Bei bekannten Gas-Ottomotoren mit direkter Einblasung des Kraftgases über ein im Zylinderkopf angeordnetes Ventil in den Brennraum zeigt sich von einem mittleren Lastbereich abwärts bis zum Leerlauf eine starke Neigung zu ungleichmäßiger Verbrennungsfolge durch wiederholtes Auftreten von Aussetzern. Diese Erscheinung ist darauf zurückzuführen, daß die in den Brennraum eingeblasene, in diesem Lastbereich sehr geringe Gasmenge mit der Verbrennungsluft kein überall gleich zündfähiges Gemisch bildet. Wenn sich in unmittelbarer Nähe der Zündkerze kein zündfähiger Gemischkern befindet, bleibt die magere Zylinderfüllung ungezündet und der gleichmäßige Lauf des Motors wird empfindlich gestört.In known gasoline engines with direct injection of the power gas Via a valve arranged in the cylinder head into the combustion chamber is shown by one middle load range down to idle a strong tendency to unevenly Combustion sequence due to repeated occurrence of misfires. This appearance is due to the fact that in this load range the blown into the combustion chamber very small amount of gas with the combustion air no equally ignitable mixture everywhere forms. If there is no ignitable mixture core in the immediate vicinity of the spark plug is located, the lean cylinder charge remains unfired and smooth running of the motor is severely disturbed.
Ein von Aussetzern begleiteter Motorbetrieb führt aber zu Drehzahlschwankungen, welche z. B. bei Generatorantrieb einen Synchronbetrieb sehr erschweren, zu Explosionen im Auspuffsystem sowie zu einem hohen spezifischen Verbrauch und anderen Nachteilen.However, engine operation accompanied by misfires leads to speed fluctuations, which z. B. make synchronous operation very difficult with generator drive, to explosions in the exhaust system as well as a high specific consumption and other disadvantages.
Bei einem bekannten Gas-Ottomotor der eingangs genannten Bauart mit dem Gaseinblaseventil brennraumseitig vorgelagerter Gaseinblasekammer ist eine selbsttätige Steuerung der Ventilbewegung in Abhängigkeit vom Gasdruck und vom Brennkammerdruck vorgesehen. Die Gaseinblasekammer mündet hierbei mit ihrer einzigen Öffnung in unmittelbarer Nähe der zylindrischen Wand des Brennraumes, also mit starker Exzentrizität gegenüber der Zylinderachse. Eine gleichmäßige Gemischbildung im Brennraum ist durch diese Konstruktion daher nicht gewährleistet. überdies handelt es sich bei dem bekannten Gaseinblaseventil um eine verhältnismäßig aufwendige und vielteilige Konstruktion mit entsprechender Störungsanfälligkeit.With a known gas-Otto engine of the type mentioned at the beginning The gas injection chamber upstream of the gas injection valve on the combustion chamber side is an automatic one Control of the valve movement depending on the gas pressure and the combustion chamber pressure intended. The gas injection chamber opens with its only opening in the immediate vicinity Close to the cylindrical wall of the combustion chamber, i.e. with a strong eccentricity opposite the cylinder axis. This ensures an even mixture formation in the combustion chamber Construction is therefore not guaranteed. moreover, it is the known one Gas injection valve is a relatively complex and multi-part construction with a corresponding susceptibility to failure.
Die Beseitigung der Mängel und Nachteile der vorgenannten bekannten Motorausführungen ist das Ziel der vorliegenden Erfindung, welche darin besteht, daß die Gaseinblasekammer mindestens eine zu einer im Abstand daneben angeordneten Zündkerze hin gerichtete Austrittsöffnung und bei Vorhandensein weiterer Öffnungen zumindest eine gegen den benachbarten Teil des Spaltes zwischen Kolben und Zylinderkopfboden gerichtete Öffnung besitzt. Dadurch wird in einfacher Weise dem Gasstrom beim Einblasen eine derartige Richtung erteilt, daß im Augenblick der Zündung ein gasreicher Zündkern in Funkennähe vorhanden ist, der das Durchbrennen der gesamten Zylinderfüllung einleitet. In Ausnutzung des Spül- und Verdichtungseffektes wird durch die vorgesehene Anordnung der Austrittsöffnungen eine beträchliche Ausdehnung des aussetzerfreien Betriebsbereiches erzielt, was sich besonders im Teillastgebiet als vorteilhaft erweist.Eliminating the shortcomings and disadvantages of the aforementioned known Engine designs is the aim of the present invention, which is to that the gas injection chamber is at least one spaced apart from one another Outlet opening directed towards the spark plug and if further openings are present at least one against the adjacent part of the gap between the piston and the cylinder head base has directed opening. As a result, the gas flow when blowing in is in a simple manner such a direction is given that at the moment of ignition a gas-rich ignition core is present in the vicinity of the spark, which initiates the burn-out of the entire cylinder charge. The intended arrangement makes use of the flushing and compaction effect the outlet openings a considerable expansion of the misfiring-free operating range achieved, which is particularly advantageous in the partial load area.
In weiterer Ausgestaltung der Erfindung erweist es sich als vorteilhaft, die Gaseinblasekammer in an sich bekannter Weise als im wesentlichen hohlzylindrisch ausgebildeten Einsatz mit in den Brennraum vorragender, mit Ausströmbohrungen versehener halbkugelförmiger Kappe auszubilden. Dadurch ergibt sich fallweise auch die Möglichkeit, bereits vorhandene Motoren nachträglich entsprechend der Erfindung auszurüsten. Die Anordnung eines Einsatzes der genannten Art war bisher nur bei Dieselmotoren bekannt, wobei durch die Aufteilung des Vorkammerstrahles in mehrere Einzelstrahlen eine gleichmäßige Kraftstoffverteilung in dem im Kolbenboden vorgesehenen Hauptbrennraum erreicht werden soll.In a further embodiment of the invention, it proves to be advantageous the gas injection chamber in a manner known per se as essentially hollow cylindrical trained insert with protruding into the combustion chamber, provided with outflow bores to form hemispherical cap. This also gives rise to the possibility, on a case-by-case basis, retrofitting existing engines according to the invention. The arrangement of an insert of the type mentioned was previously only available in diesel engines known, with the division of the prechamber jet into several individual jets even fuel distribution in the main combustion chamber provided in the piston crown should be achieved.
Weitere Einzelheiten der Erfindung gehen aus der nachfolgenden Beschreibung eines Ausführungsbeispieles an Hand der Zeichnung hervor. Die einzige Figur zeigt einen Axialschnitt des Brennraumes eines Zweitakt-Gas-Ottomotors und beschränkt sich auf die Darstellung des erfindungswesentlichen Bereiches.Further details of the invention can be found in the following description of an embodiment based on the drawing. The only figure shows an axial section of the combustion chamber of a two-stroke gasoline engine and limited on the representation of the area essential to the invention.
Der Zylinder 1, der Zylinderkopf 2 und der Kolben 3 umschließen den sphärisch gewölbten Brennraum 4. Im Zylinderkopf 2 befindet sich koaxial zum Zylinder eine Zündkerze 5. Seitlich neben der Zündkerze 5 mündet eine zur Zylinderachse geneigte, abgesetzte Bohrung des Zylinderkopfes 2, die zur Aufnahme des Gaseinblaseventils 6 sowie der Gaseinblasekammer 7 dient. Letztere besteht aus einem im wesentlichen hohlzylindrischen Einsatz 9 mit einer brennraumseitig anschließenden halbkugelförmigen Kappe 10 mit Austrittsöffnungen 8, von denen ein Teil zur Zündkerze 5 gerichtet ist; eine weitere öffnung 8' ist gegen den benachbarten Teil des Kolbenspaltes 3' gerichtet.The cylinder 1, the cylinder head 2 and the piston 3 enclose the spherically curved combustion chamber 4. In the cylinder head 2 there is a spark plug 5 coaxially to the cylinder of the gas injection valve 6 and the gas injection chamber 7 is used. The latter consists of an essentially hollow cylindrical insert 9 with a hemispherical cap 10 adjoining the combustion chamber with outlet openings 8, some of which are directed towards the spark plug 5; a further opening 8 'is directed towards the adjacent part of the piston gap 3'.
Der Einsatz 9 besitzt an seinem dem Brennraum 4 abgewendeten Ende einen Flansch 11, der sich unter Zwischenlage einer Ringdichtung 12 an dem Absatz der Aufnahmebohrung des Gaseinblaseventils 6 abstützt und mittels nicht dargestellter, bekannter Elemente gegen Verdrehen gesichert ist. Das Gaseinblaseventil6 liegt mit einem ringförmigen Absatz seines Gehäuses unmittelbar auf dem Flansch 11 des Einsatzes 9 auf und ist z. B. mittels zweier Spannschrauben am Zylinderkopf 2 festgehalten.The insert 9 has at its end facing away from the combustion chamber 4 a flange 11, with the interposition of an annular seal 12 on the shoulder the receiving bore of the gas injection valve 6 is supported and by means of not shown, known elements is secured against rotation. The gas injection valve6 lies with an annular shoulder of its housing directly on the flange 11 of the insert 9 and is z. B. held on the cylinder head 2 by means of two clamping screws.
Das aus dem Gaseinblaseventil6 in die Gaseinblasekammer 7 einströmende Kraftgas wird durch die Austrittsöffnungen 8 zum Teil zur Zündkerze 5 abgelenkt, so daß in diesem Bereich des Brennraumes 4 eine Anreicherung des Gas-Luft-Gemisches im Sinn einer sicheren Zündung des Zylinderinhaltes stattfindet. Die aus dem Kolbenspalt 3' austretende Luft tritt während der Verdichtung durch die Öffnung 8' in die Gaseinblasekammer 7 ein und unterstützt den Gasstrom durch die Austrittsöffnungen B.That flowing from the gas injection valve 6 into the gas injection chamber 7 Power gas is partially deflected through the outlet openings 8 to the spark plug 5, so that in this area of the combustion chamber 4 an enrichment of the gas-air mixture takes place in the sense of a safe ignition of the cylinder contents. The one from the piston gap 3 'escaping air enters the gas injection chamber through the opening 8' during the compression 7 and supports the gas flow through the outlet openings B.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1259634X | 1963-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1259634B true DE1259634B (en) | 1968-01-25 |
Family
ID=3687887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL47767A Pending DE1259634B (en) | 1963-05-17 | 1964-05-06 | Gas-Otto engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1259634B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3015679A1 (en) * | 2014-10-31 | 2016-05-04 | Winterthur Gas & Diesel AG | Gas feeding system and cylinder for a reciprocating piston engine, reciprocating combustion engine, and method for operating same |
EP3015699A1 (en) * | 2014-10-31 | 2016-05-04 | Winterthur Gas & Diesel AG | Gas feeding system with a control system and cylinder for a reciprocating piston engine, reciprocating piston engine, and method for operating a reciprocating piston engine |
EP3015698A1 (en) * | 2014-10-31 | 2016-05-04 | Winterthur Gas & Diesel AG | Gas feeding system with shaft seal and cylinder for a reciprocating piston combustion engine, reciprocating piston combustion engine, and method for operating a reciprocating piston combustion engine |
WO2016082989A1 (en) * | 2014-11-28 | 2016-06-02 | Robert Bosch Gmbh | Direct injection gas injector with improved cooling |
EP3147477B1 (en) | 2015-09-23 | 2018-10-17 | Winterthur Gas & Diesel AG | Gas feeding system and cylinder for a reciprocating piston engine, reciprocating combustion engine, and method for operating same |
GB2611339A (en) * | 2021-09-30 | 2023-04-05 | Brogwarner Luxembourg Automotive Systems S A | Injector for gaseous fuel |
EP4155517A3 (en) * | 2021-09-28 | 2023-04-05 | JCB Research | An internal combustion engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB565481A (en) * | 1943-03-05 | 1944-11-13 | Nat Gas And Oil Engine Company | Improvements in and relating to ignition means for internal combustion engines of the gas injection type |
DE863428C (en) * | 1951-01-17 | 1953-01-19 | Daimler Benz Ag | Diesel engine with an antechamber |
US2667155A (en) * | 1952-12-31 | 1954-01-26 | Gen Motors Corp | Automatic gas inlet valve |
DE1098287B (en) * | 1959-08-04 | 1961-01-26 | Hermann Jaenicke | Free piston internal combustion engine with gas as fuel |
-
1964
- 1964-05-06 DE DEL47767A patent/DE1259634B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB565481A (en) * | 1943-03-05 | 1944-11-13 | Nat Gas And Oil Engine Company | Improvements in and relating to ignition means for internal combustion engines of the gas injection type |
DE863428C (en) * | 1951-01-17 | 1953-01-19 | Daimler Benz Ag | Diesel engine with an antechamber |
US2667155A (en) * | 1952-12-31 | 1954-01-26 | Gen Motors Corp | Automatic gas inlet valve |
DE1098287B (en) * | 1959-08-04 | 1961-01-26 | Hermann Jaenicke | Free piston internal combustion engine with gas as fuel |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3015699B1 (en) | 2014-10-31 | 2018-12-05 | Winterthur Gas & Diesel AG | Gas feeding system with a control system and cylinder for a reciprocating piston engine, reciprocating piston engine, and method for operating a reciprocating piston engine |
EP3015679B1 (en) | 2014-10-31 | 2018-12-05 | Winterthur Gas & Diesel AG | Cylinder for a reciprocating piston engine, reciprocating combustion engine, and method for operating same |
EP3015698A1 (en) * | 2014-10-31 | 2016-05-04 | Winterthur Gas & Diesel AG | Gas feeding system with shaft seal and cylinder for a reciprocating piston combustion engine, reciprocating piston combustion engine, and method for operating a reciprocating piston combustion engine |
CN105569874A (en) * | 2014-10-31 | 2016-05-11 | 温特图尔汽柴油公司 | Gas feeding system, cylinder, reciprocating combustion engine, and method for operating same |
CN105569876A (en) * | 2014-10-31 | 2016-05-11 | 温特图尔汽柴油公司 | Gas feeding system, cylinder, reciprocating piston engine, and method for operating the same |
JP2016089835A (en) * | 2014-10-31 | 2016-05-23 | ヴィンタートゥール ガス アンド ディーゼル アーゲー | Gas supply system and cylinder for reciprocation piston internal combustion engine, reciprocation piston internal combustion engine, and method of operating reciprocation piston internal combustion engine |
EP3015699A1 (en) * | 2014-10-31 | 2016-05-04 | Winterthur Gas & Diesel AG | Gas feeding system with a control system and cylinder for a reciprocating piston engine, reciprocating piston engine, and method for operating a reciprocating piston engine |
EP3015679A1 (en) * | 2014-10-31 | 2016-05-04 | Winterthur Gas & Diesel AG | Gas feeding system and cylinder for a reciprocating piston engine, reciprocating combustion engine, and method for operating same |
US10184428B2 (en) | 2014-11-28 | 2019-01-22 | Robert Bosch Gmbh | Directly-injecting gas injector providing improved cooling |
WO2016082989A1 (en) * | 2014-11-28 | 2016-06-02 | Robert Bosch Gmbh | Direct injection gas injector with improved cooling |
EP3147477B1 (en) | 2015-09-23 | 2018-10-17 | Winterthur Gas & Diesel AG | Gas feeding system and cylinder for a reciprocating piston engine, reciprocating combustion engine, and method for operating same |
EP4155517A3 (en) * | 2021-09-28 | 2023-04-05 | JCB Research | An internal combustion engine |
GB2611339A (en) * | 2021-09-30 | 2023-04-05 | Brogwarner Luxembourg Automotive Systems S A | Injector for gaseous fuel |
GB2611339B (en) * | 2021-09-30 | 2024-02-21 | Borgwarner Luxembourg Automotive Systems S A | Injector for gaseous fuel |
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