DE19821074A1 - Opposed piston internal combustion engine - Google Patents
Opposed piston internal combustion engineInfo
- Publication number
- DE19821074A1 DE19821074A1 DE1998121074 DE19821074A DE19821074A1 DE 19821074 A1 DE19821074 A1 DE 19821074A1 DE 1998121074 DE1998121074 DE 1998121074 DE 19821074 A DE19821074 A DE 19821074A DE 19821074 A1 DE19821074 A1 DE 19821074A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- guide jacket
- oil
- cylinder
- rings
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 7
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
-
- 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
- F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
- F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/24—Pistons having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Ebenso wichtig, wie eine neue Kolbenentwicklung für das duo thermisch wirkende Brennverfahren im Viertaktmotor war, ist ein Fortschritt im Zweitakt-Gegenkolbenmotor, der nur durch einige grundlegende Änderungen in der Kolbenkonstruktion er reichbar ist.Just as important as a new piston development for the duo thermal combustion process in the four-stroke engine was an advance in the two-stroke counter-piston engine that only by some fundamental changes in the piston design is reachable.
So ist z. B. ein ausreichender Gaswechsel und der für den Misch vorgang erforderliche Luftdrall nur zu optimieren, wenn die dafür im Zylinder vorgesehenen Öffnungen rund um den Zylinder, also ohne Stege für die Führung der üblichen Kolbenringe, aus geführt sind. Die Kolbenringe sind deshalb durch eine Dichtman schette ersetzt, die etwas breiter als die ringförmige Öffnung im Zylinder ist. Der ohne Stege entstehende Zeitquerschnitt reicht dann aus, um den Gaswechsel allein durch den Restgasdruck bei Öffnung des Auslaßschlitzes zu bewirken.So z. B. a sufficient gas change and for the mixing to optimize the required air swirl only if the openings in the cylinder provided around the cylinder, So without webs for guiding the usual piston rings are led. The piston rings are therefore made by a Dichtman cuff replaced, which is slightly wider than the annular opening is in the cylinder. The time cross section created without bars is then sufficient to change the gas by the residual gas pressure alone effect when opening the outlet slot.
Der dabei erzielte Masseneffekt der Gassäule im Zylinder in Richtung Auslaß kann dank auch bei der geringen Gaserwärmung im Leerlauf einen ausreichenden Spüleffekt bewirken.The mass effect of the gas column in the cylinder achieved in The direction of the outlet can also be achieved thanks to the low gas heating cause a sufficient rinsing effect when idling.
Zur weiteren Vergrößerung des Auslaßzeitquerschnittes ist ein Vor lauf des Auslaßkolbens in der Größenordnung der Einspritzzeit vorgesehen. Um diese Einspritzzeit abzukürzen, ist in jeden Kolbenboden ein Einspritzkanal eingearbeitet, so daß der Kraft stoff über zwei Düsen eingespritzt wird.To further increase the cross-section of the outlet time is a vor Run of the exhaust piston in the order of the injection time intended. To shorten this injection time is in everyone Piston base incorporated an injection channel, so that the force substance is injected via two nozzles.
Um den Brennvorgang nicht durch eine starke Quetschströmung zu stören, haben die Kolben eine Anschrägung an der kugelförmig oder elliptisch geformten Brennraummulde des Kolbens.To avoid the burning process due to a strong squeezing flow disturb, the pistons have a bevel on the spherical or elliptically shaped combustion chamber bowl of the piston.
In diese Anschrägung mündet der Düsenkanal, der so schräg gestellt ist, daß seine Achse auf den halben Durchmesser des Kugelraumes sowohl der vertikalen als auch in der horizontalen Ebene zielt. Auf diese Weise wird über die zwei Kolben und je eine Düse der Kraftstoff optimal verteilt.The nozzle channel, which is positioned at an angle, opens into this chamfer is that its axis is half the diameter of the spherical space targets both the vertical and horizontal planes. In this way, the two pistons and one nozzle each Optimally distributed fuel.
Bei ungeteilten Kolben mit ausreichend langem Führungsmantel und einer Dichtmanschette, die breiter als der umlaufende Ein- oder Auslaßschlitz ist, könnte die Dichtmanschette ganz ähnlich einem Kolbenring auch geschlitzt ausgeführt werden, wenn der Kolben be reits oberhalb der Manschette das nötige Dichtmaß erreicht.With undivided pistons with a sufficiently long guide jacket and a sealing sleeve that is wider than the circumferential inlet or Outlet slot, the sealing sleeve could be quite similar to one Piston ring can also be slotted if the piston be already achieved the required sealing dimension above the cuff.
Bei geteilten Kolben, wie es eine sichere Abdeckung der Kolben bolzenbohrung erfordert, kann die Dichtmanschette ungeschlitzt bleiben und dichtet mit ihrer Elastizität und mit Hilfe des Öl films ab. Um eine sichere Ölversorgung zu erreichen, können ein gedrehte Ringnuten das Mitführen eines Ölfilms verbessern. With split pistons as there is a safe cover for the pistons bolt hole required, the sealing sleeve can be unslotted remain and seals with their elasticity and with the help of the oil films. To achieve a secure oil supply, a twisted ring grooves improve the carrying of an oil film.
Auch an der unteren Kolbenkante kann ohne den Aufwand zusätz licher Ölabstreifringe durch die Elastizität eines dünnen Kolbenmantels ein zusätzlicher Ölabstreifring eingespart werden.Even at the lower edge of the piston, additional effort can be made Licher oil scraper rings by the elasticity of a thin An additional oil scraper ring can be saved.
Mit dem Wegfall dieser unteren Ölabstreifringe wird ein größerer Kolbenhub auf beiden Seiten des Zylinders erreicht. Mit der da durch erzielten Länge der Luftsäule im Zylinder erhöht sich ihre Massenkraft, die von der Einlaßöffnung weg zur Vorauslaßöffnung strebt und die Einlaßenergie der Luft erhöht.With the removal of these lower oil control rings, a larger one becomes Piston stroke reached on both sides of the cylinder. With that one the length of the air column in the cylinder increases it Mass force, which is away from the inlet opening to the pre-outlet opening strives and increases the intake energy of the air.
(Die auch für den vorliegenden Kolben mögliche Anordnung eines unteren Ölabstreifringes würde den Abstand der Kurbeltriebe beim Gegenkolbenmotor vergrößern.) (The arrangement of a lower oil scraper ring would the distance between the crank drives Increase counter-piston engine.)
Der Kolbenkopf 1 ist mit dem Führungsmantel 2 über seinen Flansch 3 elastisch vorgespannt. Die Dichtmanschette 4 liegt elastisch am Zylinder an und hat zum Führungsmantel einen Dehnspalt 5 und ist frei beweglich.The piston head 1 is elastically preloaded with the guide jacket 2 via its flange 3 . The sealing sleeve 4 rests elastically on the cylinder and has an expansion gap 5 to the guide jacket and is freely movable.
Die Brennraummulde 6 hat an ihrem Rand eine Abschrägung 7 einen eingearbeiteten Einspritzkanal 8 für den Düsenstrahl 9, der in beiden Ebenen den halben Durchmesser 10 der Brennraum mulde in Drehrichtung der Brennraumluft tangiert (Bild 2).The combustion chamber trough 6 has a bevel 7 on its edge, an integrated injection channel 8 for the jet 9 , which tilts half the diameter 10 of the combustion chamber trough in the direction of rotation of the combustion chamber air in both planes ( Figure 2).
Die Verbindung des Kolbenkopfes 1 und des Führungsmantels 2 wird durch die Schrauben 11 hergestellt.The connection of the piston head 1 and the guide jacket 2 is established by the screws 11 .
Der unterhalb der Schraubenverbindung 11 befindliche Führungs mantel ist an seiner Unterkante 12 so dünn, daß er das Öl auch ohne die Anordnung eines Ringes genügend abstreift. Das Schleifbild hat hier, genauso wie die Dichtmanschette 4 das Maß der Zylinderbohrung.The guide jacket located below the screw connection 11 is so thin on its lower edge 12 that it strips the oil sufficiently without the arrangement of a ring. The grinding pattern here, just like the sealing sleeve 4, has the dimension of the cylinder bore.
Zur inneren Ölkühlung des Kolbens tangieren 2 Ölbohrungen 13 und 14 den Kolbenbolzen 15 und erreichen an beiden Seiten den Kolbenkopf 1 und den Führungsmantel 2.For internal oil cooling of the piston, 2 oil bores 13 and 14 touch the piston pin 15 and reach the piston head 1 and the guide jacket 2 on both sides.
Claims (6)
daß er durch seine Elastizität und geschrägte Kante das Öl auch ohne Ringe abstreift.3. After 1 and 2, characterized in that the guide jacket is so thin-walled downwards,
that due to its elasticity and beveled edge, it strips off the oil even without rings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998121074 DE19821074A1 (en) | 1998-05-12 | 1998-05-12 | Opposed piston internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998121074 DE19821074A1 (en) | 1998-05-12 | 1998-05-12 | Opposed piston internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19821074A1 true DE19821074A1 (en) | 1999-11-18 |
Family
ID=7867414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998121074 Withdrawn DE19821074A1 (en) | 1998-05-12 | 1998-05-12 | Opposed piston internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19821074A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10344737B3 (en) * | 2003-09-26 | 2004-08-26 | LAUKÖTTER, Karl-Heinz | Opposed-piston engine of two-stroke type to provide power has individual pistons made from composition of non-ferrous metal and carbon/graphite |
AT511896A1 (en) * | 2011-09-06 | 2013-03-15 | Mahle Koenig Kommanditgesellschaft Gmbh & Co Kg | BEARING CONNECTION AND ENGINE CYLINDER |
JP2013539516A (en) * | 2010-08-16 | 2013-10-24 | アカーテース パワー,インク. | Piston structure for opposed piston engine |
US8622042B2 (en) | 2011-09-06 | 2014-01-07 | Mahle Koenig Kommanditgesellschaft Gmbh & Co. Kg | Bearing connection, engine cylinder, and engine with the bearing connection |
-
1998
- 1998-05-12 DE DE1998121074 patent/DE19821074A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10344737B3 (en) * | 2003-09-26 | 2004-08-26 | LAUKÖTTER, Karl-Heinz | Opposed-piston engine of two-stroke type to provide power has individual pistons made from composition of non-ferrous metal and carbon/graphite |
WO2005031140A1 (en) * | 2003-09-26 | 2005-04-07 | Laukoetter Karl-Heinz | Method for the production of a piston used for internal combustion engines, especially for a two-cycle-type opposed piston engine |
JP2013539516A (en) * | 2010-08-16 | 2013-10-24 | アカーテース パワー,インク. | Piston structure for opposed piston engine |
AT511896A1 (en) * | 2011-09-06 | 2013-03-15 | Mahle Koenig Kommanditgesellschaft Gmbh & Co Kg | BEARING CONNECTION AND ENGINE CYLINDER |
AT511896B1 (en) * | 2011-09-06 | 2013-06-15 | Mahle Koenig Kommanditgesellschaft Gmbh & Co Kg | BEARING CONNECTION AND ENGINE CYLINDER |
US8622042B2 (en) | 2011-09-06 | 2014-01-07 | Mahle Koenig Kommanditgesellschaft Gmbh & Co. Kg | Bearing connection, engine cylinder, and engine with the bearing connection |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8141 | Disposal/no request for examination | ||
8127 | New person/name/address of the applicant |
Owner name: ELSBETT, DENIS, 83071 STEPHANSKIRCHEN, DE |
|
8181 | Inventor (new situation) |
Inventor name: ELSBETT, LUDWIG, DR.H.C., 97616 SALZ, VERSTORBEN, |
|
8170 | Reinstatement of the former position | ||
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: ELSBETT, DENIS, 83236 UEBERSEE, DE |
|
8139 | Disposal/non-payment of the annual fee |