DE743702C - Four-stroke, self-igniting, air-compressing internal combustion engine - Google Patents
Four-stroke, self-igniting, air-compressing internal combustion engineInfo
- Publication number
- DE743702C DE743702C DEO24962D DEO0024962D DE743702C DE 743702 C DE743702 C DE 743702C DE O24962 D DEO24962 D DE O24962D DE O0024962 D DEO0024962 D DE O0024962D DE 743702 C DE743702 C DE 743702C
- Authority
- DE
- Germany
- Prior art keywords
- axis
- air
- combustion chamber
- cylinder
- stroke
- 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.)
- Expired
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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0645—Details related to the fuel injector or the fuel spray
- F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
- F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
-
- 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
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
-
- 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
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
-
- 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
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
- F02B23/0621—Squish flow
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
Description
Im Viertakt arbeitende, selbstzündende, luftverdichtende Brennkraftmaschine Vorliegende Erfindung betrifft eine im Viertakt arbeitende, selbstzündende, luftverdichtende Brennkraftmaschine mit je einem Ein-und Auslaßventil im Zylinderkopf und einem die Formeines Drehkörpers besitzenden, mit Bezug auf. die Zylinderachse außermittig angeordneten Brennraum im Kolbenboden, der durch eine verengte Öffnung mit dem Zylinderraum in Verbindung steht sowie am Ende des Verdichtungshubes im wesentlichen die gesamte Verbrennungsluft aufnimmt. In den wirbelnden Luftinhalt dieses Brennraumes wird gegen Ende des Verdichtungshubes durch eine ;am Zylinderkopf angeordnete Einspritzdüse, deren Achse parallel zur Zylinderachse versetzt ist, flüssiger Kraftstoff in einem geschlossenen Strahl eingespritzt. Für die gute Gemischbildung und insbesondere für eine möglichst rasche Ausbreitung der Verbrennung ist es bei Verbrennungskraftmaschinen dieser Gattung von überragender Bedeutung, daß die Achse des Kraftstoffstrahles mit der Achse des in den Brennraum einströmenden Luftwirbels zusammenfällt. In der Absicht, dieses Zusammenrallen von Düsenachse und Luftwirbelachse auch dann beizubehalten, «renn wegen größerer Ventile die Düsenachse aus der Zylinderachse herausgerückt werden muß, wurde bisher auch die Brennraumachse aus der Zylinderachse heraus in die Düsenachse verlegt. Damit wurde aber die Absicht, das Zusammenfallen von Düsenachse und Luftwirbelachse beizubehalten, nicht erreicht. Denn nur dann, wenn die Brennraumachse mit der Zylinderachse zusammenfällt, fällt auch die Achse des Luftwirbels nicht mehr mit der Brennraumachse zusammen, sondern liegt rechts seitlich von dieser. Damit fällt aber die Achse des Luftwirbels auch nicht mit der in der Brennraumachse gelegenen Kraftstoffstrahlachse zusammen. Erst durch vorliegende Erfindung kann man erreichen, daß die Achse des Luftwirbels mit der Düsenachse zusammenfällt. Die Erfindung besteht darin, die Breniiraumachse zwischen die Zylinderachse und die versetzte Düsenachse zu legen, um das Minii -num der Beeinträchtigung der Gemischbildung zu erzielen.Four-stroke self-igniting, air-compressing internal combustion engine The present invention relates to a four-stroke, self-igniting, air-compressing one Internal combustion engine with one inlet and one outlet valve in the cylinder head and one die Having the shape of a rotating body, with reference to FIG. the cylinder axis off-center arranged combustion chamber in the piston crown, which is connected to the cylinder chamber through a narrowed opening is in connection and at the end of the compression stroke essentially the entire Absorbs combustion air. In the swirling air content of this combustion chamber is towards the end of the compression stroke through an injection nozzle arranged on the cylinder head, whose axis is offset parallel to the cylinder axis, liquid fuel in one injected closed jet. For good mixture formation and especially it is necessary for combustion engines to spread as quickly as possible of paramount importance of this genus that the axis of the fuel jet coincides with the axis of the air vortex flowing into the combustion chamber. In the Intention to maintain this coincidence of the nozzle axis and the air vortex axis even if «Run because of larger valves, the nozzle axis moved out of the cylinder axis has to be, the axis of the combustion chamber out of the cylinder axis was previously in relocated the nozzle axis. But with that the intention became the coincidence of the nozzle axis and to maintain the air vortex axis is not achieved. Because only if the axis of the combustion chamber coincides with the cylinder axis, the axis of the air vortex does not coincide either more together with the axis of the combustion chamber, but lies to the right of this. However, this means that the axis of the air vortex does not coincide with that in the axis of the combustion chamber located fuel jet axis together. Only through the present invention can one can achieve that the axis of the air vortex coincides with the nozzle axis. the Invention consists in the Breniiraumachse between the cylinder axis and the offset nozzle axis to minimize the impairment of the mixture formation to achieve.
In weiterer Ausbildung dieser Erfindung kann der Kraftstoffstrahl noch auf eine Erhöhung am Brennraumboden aufgespritzt werden, die derart geformt sowie mit Bezug auf die ßrennraumachse derart geneigt ist, daß die. Menge der je in Richtung der Oberflächenneigung der Erhöhung zerstäubten Kraftstoffteilchen etwa den in diesen Richtungen befindlichen Luftmengen entspricht.In a further embodiment of this invention, the fuel jet still be sprayed onto an elevation on the combustion chamber floor, which is shaped in this way and is inclined with respect to the ßrennraumachse such that the. Amount of each in the direction of the surface inclination of the elevation atomized fuel particles approximately corresponds to the amount of air in these directions.
In den Abb. i bis .l. der beiliegenden Zeichnung sindBrennkraftmaschinen mit den Merkmalen gemäß der Erfindung dargestellt.In Figs. I to .l. of the accompanying drawing are internal combustion engines shown with the features according to the invention.
Mit i ist die Zylinderachse, mit 2 die Düsen- bzw. Kraftstoffstrahlachse, mit 3 die Brennraumachse, finit d. das große Einlaßventil und mit 3 das Auslaßventil bezeichnet.With i is the cylinder axis, with 2 the nozzle or fuel jet axis, with 3 the combustion chamber axis, finite d. the large inlet valve and with 3 the outlet valve designated.
Auf dem Priifständ zeigt sich, daß im allgemeinen das Minimum der Beeinträchtigung der Gemischbildung dann erreicht wird, wenn die Brennraumachse erheblich näher zur Düsenachse als zur Zylinderachse liegt.The test shows that in general the minimum of The mixture formation is impaired when the axis of the combustion chamber is considerably closer to the nozzle axis than to the cylinder axis.
Diese Erscheinung läßt sich auch strömungstechnisch erklären wie folgt: Wenn man die Brennraumachse in der Zylinderachse beläßt und nur die Düsenachse allein seitlich verschiebt, dann fällt die Symmetrieachse der Luftströme und Luftwirbel im Brennraum mit der Düsenachse, d. 1i. mit der Achse des Brennstoffstrahles zusammen, was die Gemischbildung und Brenndauer beeinträchtigt.This phenomenon can also be explained in terms of flow technology as follows: If you leave the combustion chamber axis in the cylinder axis and only move the nozzle axis laterally , the axis of symmetry of the air flows and air vortices in the combustion chamber coincides with the nozzle axis, i.e. 1i. coincides with the axis of the fuel jet, which affects the mixture formation and burning time.
Aber auch wenn man die Achse des Brennraumes seitlich in die Düsenachse verlegt, fällt trotzdem die Achse der Luftströme und Luftwirbel im Brennraum nicht mit der Düsenachse, d. h. mit ,der Achse .des Kraftstoffstrahles zusammen; denn sobald die Achse des Brennraumes aus den- Z_v linderachse heraus verlegt wird, erfolgt die Lufteinströmung in ,den Brennraum nicht mehr symmetrisch zur Brennraumachse. Die Achse der Lufteinströmung befindet sich vielmehr, wenn man z. B. wie in Abb. i die Brennraumachse nach rechts versch?ebt, rechts seitlich von der Brennraumachse. Wenn man also .die Brennraumachse mit der Düsenachse zusammenfallen läßt, dann fällt die Achse der Lufteinströmung nicht finit der Düsenachse, d. b. nicht mit der Kraftstoff strahlachse zusammen, was wieder die gute Gemischbildung beeinträchtigt.But also if you place the axis of the combustion chamber laterally in the nozzle axis relocated, the axis of the air flows and air vortices in the combustion chamber does not fall with the nozzle axis, d. H. with, the axis of the fuel jet together; because as soon as the axis of the combustion chamber is moved out of the Z_v linder axis the air inflow into the combustion chamber is no longer symmetrical to the axis of the combustion chamber. The axis of the air inflow is rather when you z. B. as in Fig. i the combustion chamber axis shifted to the right, to the right of the combustion chamber axis. So if one lets .the axis of the combustion chamber coincide with the axis of the nozzle, then it falls the axis of the air inflow not finite with the nozzle axis, d. b. not with the fuel beam axis together, which again impairs the good mixture formation.
Wenn man dagegen die Brennraumachse weniger nach seifwärts verschiebt als die Düsenachse, z. B. so wie in Abb. i gezeichnet, dann kann man die rechts von der Brennraumachse gelegene Achse der Lufteinströmung zum Zusammenfallen mit der Düsenachse, d. h. mit der Brennstoffstrahlachse bringen und dadurch die Gemischbildung, Verbrennung und Leistung verbessern.If, on the other hand, the axis of the combustion chamber is shifted less towards the soap than the nozzle axis, e.g. B. as shown in Fig. I, then you can use the one on the right from the axis of the combustion chamber of the air inflow to coincide with the nozzle axis, d. H. bring with the fuel jet axis and thereby the mixture formation, Improve combustion and performance.
Die Abb. 3 zeigt die Anwendung der Erfindung bei einem Motor, dessen Brennraum nicht die in Abb. i gezeigte übliche Form mit konkavem Boden hat, sondern eine über ,den Brennraumboden erhöhte besondere Auftreffftäche für den Kraftstoffstrahl, die den Zweck t, bei großen Brennräumen den nach allen Richtungen zerstäubten Brennstoffstrahl gegen das verhältnismäßig hoch über dem Brennraumboden gelegene Zentrum des Luftwirbels zu lenken.Fig. 3 shows the application of the invention in a motor, whose Combustion chamber does not have the usual shape shown in Fig. I with a concave bottom, but a special impact area for the fuel jet raised above the combustion chamber floor, the purpose of which, in the case of large combustion chambers, is the atomized fuel jet in all directions against the center of the air vortex, which is relatively high above the combustion chamber floor to steer.
Bei der üblichen Brennraumform mit konkavem Boden gemäß Abb. i bewirkt die erfindungsgemäß vorgeschlagene Lage der Brennraumachse zwischen Zylinderachse und Düsenachse schon an und für sich, d. h. ohne weitere Maßnahmen, daß der Kraftstoffstrahl nicht senkrecht auf die Bodenfläche auftrifft. Hierdurch wird eine für die Gemischbildung günstige ungleiche Verteilung der Brennstoffmengen im Sinne der verschiedenen Größen der Lufträume zu beiden Seiten des Brennstrahles herbeigeführt. Dagegen muß bei dem Brennraum mit erhöhter Auftrefffläche nach Abb.3 .darauf besonders Bedacht genommen werden, daß auch in diesem Falle die ungleiche Verteilung der Kraftstoffmengen auf die beiden Seiten der Düsenachse stattfindet. Dies wird dadurch bewirkt. daß man der erhöhten Auftrefffläche eine entsprechende Neigung zur Düsenachte gibt.With the usual shape of the combustion chamber with a concave bottom as shown in Fig. I the position of the combustion chamber axis proposed according to the invention between the cylinder axis and nozzle axis in and of themselves, d. H. without further measures that the fuel jet does not hit the floor surface perpendicularly. This creates one for the mixture formation favorable unequal distribution of fuel quantities in terms of the various sizes the air spaces on both sides of the focal beam brought about. Against it must be Particular attention has been paid to the combustion chamber with the increased impact area as shown in Figure 3 that also in this case the uneven distribution of the fuel quantities the two sides of the nozzle axis takes place. This is what it does. that he gives the increased impact area a corresponding inclination towards the nozzle end.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO24962D DE743702C (en) | 1941-04-16 | 1941-04-16 | Four-stroke, self-igniting, air-compressing internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO24962D DE743702C (en) | 1941-04-16 | 1941-04-16 | Four-stroke, self-igniting, air-compressing internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE743702C true DE743702C (en) | 1943-12-31 |
Family
ID=7356271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO24962D Expired DE743702C (en) | 1941-04-16 | 1941-04-16 | Four-stroke, self-igniting, air-compressing internal combustion engine |
Country Status (1)
Country | Link |
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DE (1) | DE743702C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE873007C (en) * | 1949-03-16 | 1953-04-09 | Daimler Benz Ag | Pre-chamber diesel engine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR765085A (en) * | 1932-12-07 | 1934-06-01 | Fusion Moteurs | Improvements made to internal combustion engines, in particular to two-stroke solid injection engines |
FR822932A (en) * | 1936-07-10 | 1938-01-11 | Saurer Adolph | Four-stroke injection combustion engine |
CH211350A (en) * | 1937-04-23 | 1940-09-15 | Saurer Ag Adolph | Injection internal combustion engine. |
-
1941
- 1941-04-16 DE DEO24962D patent/DE743702C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR765085A (en) * | 1932-12-07 | 1934-06-01 | Fusion Moteurs | Improvements made to internal combustion engines, in particular to two-stroke solid injection engines |
FR822932A (en) * | 1936-07-10 | 1938-01-11 | Saurer Adolph | Four-stroke injection combustion engine |
CH211350A (en) * | 1937-04-23 | 1940-09-15 | Saurer Ag Adolph | Injection internal combustion engine. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE873007C (en) * | 1949-03-16 | 1953-04-09 | Daimler Benz Ag | Pre-chamber diesel engine |
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