DE4344388A1 - Piston port IC engine - Google Patents
Piston port IC engineInfo
- Publication number
- DE4344388A1 DE4344388A1 DE4344388A DE4344388A DE4344388A1 DE 4344388 A1 DE4344388 A1 DE 4344388A1 DE 4344388 A DE4344388 A DE 4344388A DE 4344388 A DE4344388 A DE 4344388A DE 4344388 A1 DE4344388 A1 DE 4344388A1
- Authority
- DE
- Germany
- Prior art keywords
- oil
- slots
- engine
- air feeds
- chamber
- 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- Withdrawn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
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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/08—Separating lubricant from air or fuel-air mixture before entry into cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
- F01M2001/083—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating cylinders
-
- 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
Abstract
Description
Die Erfindung betrifft eine schlitzgesteuerte Hubkolben-Brenn kraftmaschine gemäß dem Oberbegriff des Patentanspruchs.The invention relates to a slot-controlled reciprocating combustion Motor according to the preamble of the claim.
Bei schlitzgesteuerten Brennkraftmaschinen, wie sie als Zwei taktmaschinen bekannt sind, tritt, wie beispielsweise aus der DE-PS 9 70 299 ersichtlich, das Problem der Beseitigung von Öl auf, das der Kolben bei seiner Arbeitsbewegung in die dem Luft eintritt dienenden Schlitze drückt. Bei der aus der genannten Patentschrift bekannten Maschine mit Querströmung wird dazu der Spülluft mitgerissenes Öl in der Weise entzogen, daß im Bereich der Auftrefffläche der Zylinderwand für die Spülluft eine Reini gungsöffnung vorgesehen ist, die ihrerseits durch einen Stopfen bis auf einen Spalt verschlossen ist, der mit einer Abflußlei tung für das in den Spalt gelangende Öl versehen ist.In slot-controlled internal combustion engines, such as two clock machines are known, such as from the DE-PS 9 70 299 apparent the problem of removing oil on the piston during its working movement in the air presses serving slots. In the case of the above Known machine with cross flow is the Purge-entrained oil is extracted in such a way that in the area Reini the area of impact of the cylinder wall for the purge air supply opening is provided, which in turn by a plug except for a gap that is closed with a drainage line is provided for the oil entering the gap.
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, speziell bei einer mit Gleichstromspülung arbeitenden Hubkolben-Brenn kraftmaschine für die Abfuhr von Öl zu sorgen, das durch die Lufteintrittsschlitze ausgetreten ist.In contrast, the invention is based, specifically with a reciprocating piston combustion system working with DC flushing to ensure the removal of oil by the engine Air inlet slots has emerged.
Die erfindungsgemäße Lösung dieser Aufgabe besteht in den kenn zeichnenden Merkmalen des Patentanspruchs.The inventive solution to this problem consists in the drawing features of the claim.
Die Erfindung löst die definierte Aufgabe also in bestechend einfacher Weise ohne zusätzlichen Aufwand alleine dadurch, daß an tiefsten Stellen der Luftzuführungen Ölfallen vorgesehen sind, die - unter Vermeidung von Schläuchen oder anderen äußeren Leitungen - durch Ölkanäle mit dem Kurbelraum verbunden sind. Zwecks Verhinderung eines unerwünschten großen Luftdurchtritts durch diese Kanäle sind die Kanäle kalibriert.The invention solves the defined task in an impressive manner simple way without additional effort simply that Oil traps are provided at the lowest points in the air supply are that - avoiding hoses or other external Pipes - are connected to the crankcase by oil channels. To prevent unwanted large air passage the channels are calibrated through these channels.
Sind die Luftzuführungen durch Kanäle gebildet, bestehen die Öl fallen aus örtlichen Vertiefungen derselben; münden die Luftein trittsschlitze dagegen in ringzylinderförmige Luftzuführungsräu me, so bilden deren tiefste Stellen selbst die Ölfallen, die über die definierten kalibrierten Kanäle mit dem Kurbelraum ver bunden sind, so daß das angesammelte Öl wieder in die Ölwanne gelangt.If the air inlets are formed by channels, the oil will exist fall from local depressions of the same; open the air inlets on the other hand, slits in the ring-cylindrical air supply space me, the deepest parts of it even form the oil traps, the ver with the crankcase via the defined calibrated channels are bound so that the accumulated oil back into the oil pan reached.
Ein Ausführungsbeispiel für eine erfindungsgemäße Zweitaktma schine wird im folgenden anhand der Zeichnung erläutert, die einen Querschnitt durch die Maschine im Bereich eines der Zy linder wiedergibt.An embodiment for a two-stroke engine according to the invention machine is explained below with reference to the drawing a cross section through the machine in the area of one of the Zy linder reproduces.
In üblicher Weise enthält die Maschine den Zylinderkopf 1 mit der Nockensteuerung 2 für das Auslaßventil 3, dem die Kraft stoffeinspritzdüse 4 benachbart ist, darunter, umgeben von der Kolbenbuchse 5 und der Wand des eigentlichen Zylinderblocks 6, den den Brennraum darstellenden Zylinder 7, in dem der Hubkolben 8 die Lufteintrittsschlitze 9 zeitweilig abdeckend bzw. freige bend läuft, und das Kurbelgehäuse 10 mit dem Kurbelraum 11. In diesem ist in üblicher Weise die Kurbelwelle 12 gelagert, unter der sich die Ölwanne 13 befindet.In the usual way, the machine contains the cylinder head 1 with the cam control 2 for the exhaust valve 3 , which the fuel injector 4 is adjacent, including, surrounded by the piston sleeve 5 and the wall of the actual cylinder block 6 , the cylinder 7 representing the combustion chamber, in which the reciprocating piston 8 temporarily covers the air inlet slots 9 or freige bend, and the crankcase 10 with the crank chamber 11 . The crankshaft 12 , under which the oil pan 13 is located, is mounted in this in a conventional manner.
Im Zylinderblock 6 erkennt man den Luftzuführungsraum 14, der in Strömungsverbindung mit den Lufteintrittsschlitzen 9 steht. Bei der Arbeitsbewegung des Kolbens 8 gelangt - insbesondere unter der Wirkung der oberen Kolbenringe - an der Innenwand der Lauf buchse 5 befindliches Öl in die Lufteintrittsschlitze 9, und in folge der Druckpulsationen sammelt sich Öl an den tiefsten Stel len des Luftzuführungsraums 14 an. Damit ein im Laufe der Zeit erfolgendes weitgehendes Füllen des Luftzuführungsraums 14 mit diesem Öl vermieden wird, dient dessen tiefste Stelle 15 als Öl falle, die über den kalibrierten Kanal 16 mit dem Kurbelraum 11 in Verbindung steht. Da der Luftzuführungsraum 14 durch ein nicht dargestelltes Spülgebläse unter Überdruck steht, wird das angesammelte Öl zusätzlich durch die kalibrierte Bohrung 16 ge drückt. Diese muß allerdings so bemessen sein, daß der Übertritt von Luft aus dem Luftzuführungsraum 14 in den Kurbelraum 11 be grenzt ist.In the cylinder block 6 one can see the air supply space 14 , which is in flow connection with the air inlet slots 9 . During the working movement of the piston 8 - in particular under the action of the upper piston rings - on the inner wall of the bushing 5 oil located in the air inlet slots 9 , and as a result of the pressure pulsations, oil collects at the deepest points of the air supply space 14 . So that over the course of time extensive filling of the air supply space 14 is avoided with this oil, its lowest point 15 serves as an oil trap, which is connected to the crank chamber 11 via the calibrated channel 16 . Since the air supply chamber 14 is under pressure by a flushing fan, not shown, the accumulated oil is also pressed through the calibrated bore 16 ge. However, this must be such that the transfer of air from the air supply chamber 14 into the crank chamber 11 is limited.
Mit der Erfindung ist demgemäß mit einfachsten Maßnahmen eine gattungsgemäße Brennkraftmaschine geschaffen, die hinsichtlich der Rückführung angesammelten Öls optimiert ist.The invention is accordingly with the simplest measures Generic internal combustion engine created with regard to the return of accumulated oil is optimized.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4344388A DE4344388A1 (en) | 1993-01-15 | 1993-12-24 | Piston port IC engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4300902 | 1993-01-15 | ||
DE4344388A DE4344388A1 (en) | 1993-01-15 | 1993-12-24 | Piston port IC engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4344388A1 true DE4344388A1 (en) | 1994-07-21 |
Family
ID=6478248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4344388A Withdrawn DE4344388A1 (en) | 1993-01-15 | 1993-12-24 | Piston port IC engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4344388A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2736090A1 (en) * | 1995-06-30 | 1997-01-03 | Daimler Benz Ag | TWO-STROKE INTERNAL COMBUSTION ENGINE WITH PARALLEL CURRENT SCAN |
-
1993
- 1993-12-24 DE DE4344388A patent/DE4344388A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2736090A1 (en) * | 1995-06-30 | 1997-01-03 | Daimler Benz Ag | TWO-STROKE INTERNAL COMBUSTION ENGINE WITH PARALLEL CURRENT SCAN |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |