DD275891A1 - INTERNAL COMBUSTION ENGINE WITH A CATALYTICALLY COATED COMBUSTION ENGINE - Google Patents
INTERNAL COMBUSTION ENGINE WITH A CATALYTICALLY COATED COMBUSTION ENGINE Download PDFInfo
- Publication number
- DD275891A1 DD275891A1 DD88320396A DD32039688A DD275891A1 DD 275891 A1 DD275891 A1 DD 275891A1 DD 88320396 A DD88320396 A DD 88320396A DD 32039688 A DD32039688 A DD 32039688A DD 275891 A1 DD275891 A1 DD 275891A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- vortex
- ceramic
- combustion engine
- chamber
- combustion chamber
- 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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/08—Engines characterised by precombustion chambers the chamber being of air-swirl type
-
- 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
- F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
- F02B19/165—The shape or construction of the pre-combustion chambers is specially adapted to be formed, at least in part, of ceramic material
-
- 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
-
- 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
- F02B51/00—Other methods of operating engines involving pretreating of, or adding substances to, combustion air, fuel, or fuel-air mixture of the engines
- F02B51/02—Other methods of operating engines involving pretreating of, or adding substances to, combustion air, fuel, or fuel-air mixture of the engines involving catalysts
-
- 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
Abstract
Brennkraftmaschinen mit einem katalytisch beschichteten Brennraum, insbesondere einer katalytisch beschichteten Vor- oder Wirbelkammer, wobei diese aus Stahl oder Keramik besteht bzw. fuer die katalytische Beschichtung ein keramisches Traegermaterial in die Vor- oder Wirbelkammer eingebracht ist. Es sind Loesungswege bekannt, welche z. B. eine oertlich begrenzte Wandzone in einem im Kolben angebrachten Brennraum mit einem Platin- bzw. Natrium-Katalysator aufweisen. Andere Loesungen sehen vor, den gesamten Brennraum mit katalytisch wirkendem Material auf der Basis von Cu-, Cr-, Pt-, Rd-, Ni-Verbindungen auszukleiden. Nachteilig bei diesen Loesungswegen ist, dass diese allesamt hochwertige und kostenaufwendige katalytische Materialien benoetigen. Erfindungsgemaess wird dies dadurch behoben, dass als katalytische Schicht ein Gemisch keramischer Verbindungen Verwendung findet, wobei den Hauptanteil die Komponenten SiO2, Al2O3 und MgO stellen, waehrend vorzugsweise B2O3 und Alkalien als Zusaetze dienen. Fig. 1Internal combustion engines with a catalytically coated combustion chamber, in particular a catalytically coated vortex or vortex chamber, wherein this consists of steel or ceramic or for the catalytic coating, a ceramic carrier material is introduced into the pre-vortex or vortex chamber. There are solution paths known which z. B. have a locally limited wall zone in a piston mounted in the combustion chamber with a platinum or sodium catalyst. Other solutions envisage lining the entire combustion chamber with catalytically active material based on Cu, Cr, Pt, Rd, Ni compounds. A disadvantage of these solution paths is that they all require high quality and costly catalytic materials. According to the invention, this is remedied by using a mixture of ceramic compounds as the catalytic layer, the main constituent being the components SiO 2, Al 2 O 3 and MgO, while preferably B 2 O 3 and alkalis serve as additives. Fig. 1
Description
Hierzu 2 Seiten ZeichnungenFor this 2 pages drawings
Die Erfindung betrifft eine Brennkraftmaschine mit ainem katalytisch beschichteten Brennraum, insbesondere einer katalytisch beschichteten Vor- bzw. Wirbelkammer, wöbe! diese aus Stahl oder Keramik besteht bzw. für die katalytische Beschichtung ein keramisches Trägermaterial in dia Vor- bzw. Wirbelkammer eingebracht ist.The invention relates to an internal combustion engine with a catalytically coated combustion chamber, in particular a catalytically coated forward or swirl chamber, wöbe! this consists of steel or ceramic or for the catalytic coating, a ceramic carrier material in dia vortex or vortex chamber is introduced.
erhöhter Reaktionsgeschwindigkeit ausgebildet ist, wobei diese mit einem katalytischen Stoff, z. B. Natrium oderis formed increased reaction rate, wherein this with a catalytic substance, eg. As sodium or
versehen, mit dom die Gase während des Verbrenniingsablaufos unmittelbar in Berührung kommen.provided with the gases during the Verbrenniingsablaufos come into direct contact.
gebracht.brought.
ist für die katalytische Beschichtung ein keramische.^ Trägermaterial vorgesehen.For example, a ceramic substrate is provided for the catalytic coating.
bekannt, wobei zur Vor-oder Wirbelkammer eine den Glühstift umgobondoNobonkammer angebracht ist. Diese Nebenkammorist mit einem porösen Material hoher Saueretoffspoicherfähfgkeit ausgebildet, wobei nobon R und Rd, Cu, K'i und Cr auch einoknown, with the vortex or vortex chamber a glow pin umgobondoNobonkammer is mounted. This Nebenkammorist is formed with a porous material high Saueretoffspoicherfähfgkeit, wherein nobon R and Rd, Cu, K'i and Cr also eino
Ziel dor Erfindung Ist os, C- und CoEmlsslon zu sonkon und don Einsatz dieser kostenaufwondlgon katalytischon Stoffe zu vermoidon.Aim of the invention is to use os, C- and CoEmlsslon to sonkon and don use of these katoneston catalytical substances to vermoidon.
-2- 275 891 Darlegung des Wesens der Erfindung-2- 275 891 Presentation of the Essence of the Invention
Aufgabt) dor Erfindung ist es, mittels keramischen, Katalysatoren-Einsatzes irrt Brennraum die Reduzierung des Co- und Schwarzrauch- (Ruß-) Anteils Im Abgas bereits hol der inneren Verbrennung zu erreichen.Aufgabt) dor invention is it, by means of ceramic, catalyst insert mistaken combustion chamber, the reduction of co- and black smoke (soot) share in the exhaust gas already get the internal combustion.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die brenn raumzugewandte Fläche einer Vor- bzw. Wirbelkammer mit einer katalytischem Schicht aus einem Gemisch keramischer Verbindungen versehen ist, wobei den Hauptanteil dieses Gemisches die Komponenten SiOj, AI2O3 und MgO stellen. Darüber hinaus ist dieses Gemisch vorzugsweise mit Zusätzen von B2O3 und Alkalien versehen. Dieses auf die Fläche einer Vor- bzw. Wirbelkammer aufgetragene Gemisch ist bsi Temperaturen von 800"C-17CO'C, vorzugsweise bei 1400°C einzubrennen bzw. aufzusintern, dabei soll das keramische Trägermaterial bzw. die Voll-Keramik-Vorkammcr aus Si3N4 bestehen. Fürdie katalytische Schicht ist vorzugsweise eine Gemischzusammensetzung von 50-80Gew.-%SiOjAccording to the invention the object is achieved in that the combustion chamber facing surface of a vortex or vortex chamber is provided with a catalytic layer of a mixture of ceramic compounds, the majority of this mixture, the components SiOj, AI 2 O 3 and MgO. In addition, this mixture is preferably provided with additions of B 2 O 3 and alkalis. This applied to the surface of a vortex or vortex chamber mixture bsi temperatures of 800 "C-17CO'C, preferably einzubintern at 1400 ° C or aufzusintern, it should be the ceramic support material or the full-ceramic Vorkammcr of Si 3 N 4 For the catalytic layer is preferably a mixture composition of 50-80% by weight SiO 2
6-40 Gew.-% AI2O,6-40% by weight of Al 2 O,
2-35Gew.-% MgO2-35% by weight of MgO
1-20 Gew.-% BiOj Host Alkalien vorgesehen.1-20% by weight BiOj host alkalis provided.
An Hand von Zeichnungen soll die Erfindung näher erläutert werdenWith reference to drawings, the invention will be explained in more detail
Es zeigen: Show it:
Fig. 1: Einen Schnitt durch eine Vorkammer Fig. 2: Graphische Darstellung von KunnfeldernFig. 1: A section through an antechamber Fig. 2: Graphical representation of Kunnfeldern
Aus Fig. 1 ist eine im Längsschnitt dargestellte Vorkammer 1, bestehend aus keramischen Material, dargestellt. Weiterhin ist daraus erkennbar die aufgetragene katalytische Schicht 2 aus einem Gemisch keramischer Verbindungen. Auch der Schußkanal 3 ist mit einer derartigen Schicht 2 überzogen. Die beste katalytisch© Wirkung ist erreichbar, wenn die Oberfläche der Schicht 2 stark porös ist. Hierzu ist vorzugsweise eine Gemischzusammensetzung vorzusehen von:From Fig. 1, a pre-chamber 1 shown in longitudinal section, consisting of ceramic material is shown. Furthermore, it can be seen from the applied catalytic layer 2 of a mixture of ceramic compounds. Also, the weft channel 3 is coated with such a layer 2. The best catalytic effect is achievable if the surface of layer 2 is highly porous. For this purpose, it is preferable to provide a mixture composition of:
6OGew.-%SiO2 6% by weight of SiO 2
24Gew.-%AI2O, 7 Gew.-% MgO 3,5Gew.-%B2Oj24% by weight Al 2 O, 7% by weight MgO 3.5% by weight B 2 Oj
Rest Alkalien.Residual alkalis.
Außerdem entsteht durch den Wärmeübergang von der keramischen Schicht 2 zum Träger 1 eine zusätzliche Wärmeisolation. Fig. 2 zeigt die Ergebnisse von Versuchen bei einer konstanten Drehzahl bei Variation der Last. Dargestellt wird dar Einfluß der aufgebrachten Schicht auf einen keramischen Werkstoff gegenüber der unboschichteten Variante sowie eines konventionellen Wirbelkammer-Einsatzes Auf Abgastrübung, Kohlenmonoxidkonzentration und Abgastemperatur bei konstantem statischen Förderbeginn.In addition, due to the heat transfer from the ceramic layer 2 to the carrier 1, an additional heat insulation is produced. Fig. 2 shows the results of experiments at a constant speed with variation of the load. The influence of the applied layer on a ceramic material compared to the uncoated variant as well as of a conventional swirl chamber insert is shown. On exhaust gas opacity, carbon monoxide concentration and exhaust gas temperature with constant static delivery start.
Bei 80% Last wird bei dieser Drehzahl die Schicht wirksam. Der Schwarzrauch wird wirksam reduziert bei entsprechender Verringerung der Kohlenmonoxidkonzentration. Die Abgastemperaturen der keramischen Werkstoffe steigen infolge der thermischen Eigenschaften gegenüber einem konventionellen Wirbelkammer-Einsatz an.At 80% load, the layer becomes effective at this speed. The black smoke is effectively reduced with a corresponding reduction of the carbon monoxide concentration. The exhaust gas temperatures of the ceramic materials increase due to the thermal properties compared to a conventional vortex chamber use.
Claims (4)
Rest Alkalien besteht.1-20% by weight B 2 O 3
Residual alkalis exist.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD88320396A DD275891A1 (en) | 1988-10-03 | 1988-10-03 | INTERNAL COMBUSTION ENGINE WITH A CATALYTICALLY COATED COMBUSTION ENGINE |
DE3928480A DE3928480A1 (en) | 1988-10-03 | 1989-08-29 | IC engine with catalyst-coated combustion chamber - using silica, alumina and magnesia based ceramic mixt. as catalyst |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD88320396A DD275891A1 (en) | 1988-10-03 | 1988-10-03 | INTERNAL COMBUSTION ENGINE WITH A CATALYTICALLY COATED COMBUSTION ENGINE |
Publications (1)
Publication Number | Publication Date |
---|---|
DD275891A1 true DD275891A1 (en) | 1990-02-07 |
Family
ID=5602900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD88320396A DD275891A1 (en) | 1988-10-03 | 1988-10-03 | INTERNAL COMBUSTION ENGINE WITH A CATALYTICALLY COATED COMBUSTION ENGINE |
Country Status (2)
Country | Link |
---|---|
DD (1) | DD275891A1 (en) |
DE (1) | DE3928480A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015017A1 (en) | 2008-03-19 | 2009-09-24 | Franz Hegele | Combustion chamber for piston and cylinder head of internal combustion engine i.e. direct-injection diesel engine, has body whose large surface is coated with catalyst suitable for pyrolysis and consists of catalytically working material |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2669378B1 (en) * | 1990-11-19 | 1994-10-21 | Peugeot | PROCESS FOR PRODUCING A CATALYTIC DEPOSITION BY PLASMA JET IN A COMBUSTION CHAMBER OF AN EXPLOSION ENGINE. |
US5805973A (en) * | 1991-03-25 | 1998-09-08 | General Electric Company | Coated articles and method for the prevention of fuel thermal degradation deposits |
US5891584A (en) * | 1991-03-25 | 1999-04-06 | General Electric Company | Coated article for hot hydrocarbon fluid and method of preventing fuel thermal degradation deposits |
DE4242099A1 (en) * | 1992-12-14 | 1994-06-16 | Abb Patent Gmbh | Appts., esp. gas turbine appts. - having coating on its operating parts in contact with fuel gas or waste gas to reduce pollutant emissions |
DE19516815A1 (en) * | 1995-05-08 | 1996-11-14 | Electro Chem Eng Gmbh | Ceramicized light alloy pistons for internal combustion engines |
US5923944A (en) * | 1995-10-20 | 1999-07-13 | General Electric Company | Fluid containment article for hot hydrocarbon fluid and method of forming a coating thereon |
US9217360B2 (en) | 2011-12-01 | 2015-12-22 | Cummins Intellectual Property, Inc. | Prechamber device for internal combustion engine |
DE102015203493A1 (en) * | 2015-02-26 | 2016-03-24 | Mtu Friedrichshafen Gmbh | Prechamber for an internal combustion engine and internal combustion engine |
DE102019122559A1 (en) * | 2019-08-22 | 2021-02-25 | Bayerische Motoren Werke Aktiengesellschaft | Externally ignited reciprocating internal combustion engine with a prechamber ignition system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3684743A (en) * | 1970-08-18 | 1972-08-15 | Nikolai Stepanovich Morotsky | Combustion chamber coatings of diesel engines with volumetric-film or film mixing |
DE7521970U (en) * | 1975-07-10 | 1978-08-03 | Roessel, Heinrich, 5670 Opladen | COMBUSTION ENGINE |
DE2648034A1 (en) * | 1976-10-23 | 1978-04-27 | Schmidt Gmbh Karl | INTERNAL COMBUSTION ENGINE |
US4738227A (en) * | 1986-02-21 | 1988-04-19 | Adiabatics, Inc. | Thermal ignition combustion system |
-
1988
- 1988-10-03 DD DD88320396A patent/DD275891A1/en not_active IP Right Cessation
-
1989
- 1989-08-29 DE DE3928480A patent/DE3928480A1/en not_active Ceased
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015017A1 (en) | 2008-03-19 | 2009-09-24 | Franz Hegele | Combustion chamber for piston and cylinder head of internal combustion engine i.e. direct-injection diesel engine, has body whose large surface is coated with catalyst suitable for pyrolysis and consists of catalytically working material |
Also Published As
Publication number | Publication date |
---|---|
DE3928480A1 (en) | 1990-04-12 |
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