AT140112B - Multi-cylinder four-stroke internal combustion engine. - Google Patents
Multi-cylinder four-stroke internal combustion engine.Info
- Publication number
- AT140112B AT140112B AT140112DA AT140112B AT 140112 B AT140112 B AT 140112B AT 140112D A AT140112D A AT 140112DA AT 140112 B AT140112 B AT 140112B
- Authority
- AT
- Austria
- Prior art keywords
- cylinder
- compressor
- compression
- internal combustion
- combustion engine
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title description 3
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000002349 favourable effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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
- F02B1/00—Engines characterised by fuel-air mixture compression
-
- 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
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
- F02B33/26—Four-stroke engines characterised by having crankcase pumps
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
-
- 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
- F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
- F02B2700/02—Four stroke engines
- F02B2700/023—Four stroke engines with measures for charging, increasing the power
-
- 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
- F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
- F02B2700/02—Four stroke engines
- F02B2700/025—Four stroke engines with measures for compressing the cylinder charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
- F02D2700/02—Controlling by changing the air or fuel supply
- F02D2700/0217—Controlling by changing the air or fuel supply for mixture compressing engines using liquid fuel
- F02D2700/0225—Control of air or mixture supply
- F02D2700/0246—Control of air or mixture supply for engines with compressor
- F02D2700/0248—Control of air or mixture supply for engines with compressor by means of throttle devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
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EMI1.1
Die Erfindung bezieht sich auf eine weitere. Ausbildung der im Stammpatente Nr. 129641 beschriebenen Art von mehrzylindrigen Viertaktbrennkraftmaschinen, bei welchen jeder Zylinder während eines grossen Teiles des Einlasshubes eine Ladung unter Druck aus einem andern, in der Verdichtungs- periode befindlichen Zylinder und während des restlichen Teiles des Einlasshubes eine weitere Ladungs- menge erhält, wobei diese Ladungsmenge von einem allen Zylindern gemeinsamen, durch einen Ver- dichter gespeisten Aufnehmer geliefert wird, worauf der auf diese Weise geladene Zylinder während des folgenden Rückhubes einen Teil seiner Ladung unter annähernd gleichbleibendem Druck über den Aufnehmer in einen andern Zylinder fördert und sodann den restliehen Teil dieser Ladung auf einen höheren
Druck verdichtet.
Gemäss dem Stammpatent vollzieht sich die teilweise Überschiebung der Ladung aus einem Zylinder in den folgenden dadurch, dass das Ansaugventil jedes Zylinders über die Zeitdauer beim gewöhnlichen Arbeitszyklus hinaus offengehalten wird, während die Einstellung des Verdichters derart ist, dass er erst nach dem Schliessen des verlängert offengehaltenen Ventils, d. h. nach der Beendigung der Überschiebung der Ladung, den Aufnehmer zu beliefern beginnt.
Gemäss der vorliegenden Erfindung wird der Verdichter derart eingestellt, dass er schon während des Überschiebens der Ladung den Aufnehmer zu beliefern beginnt. Bei dieser Regelung wird das Fassungsvermögen oder die Kapazität des Aufnehmers um jene der in Überschiebung ihrer Ladung begriffenen Zylinder vergrössert, und es werden sohin die Pulsationen im Verdichter durch die Wirkung einer Kapazität gedämpft, die gleich ist der Summe des Volumen der in Überschiebung begriffenen Zylinder und des Volumens des Aufnehmers. Diese Variante kann in manchen Fällen aus gewissen konstruktiven Bedingungen sehr zweckmässig sein und lässt den grösstmöglichsten Vorteil aus der Erfindung ziehen.
Im Stammpatent ist eine Anordnung besehrieben, bei welcher eine Bindung der Steuerung für schwankende Abgaben des Verdichters und jener für das Schliessen der Motoreinlassventile besteht, so zwar,-dass die beiden aufeinanderfolgenden Verdichtungsstufen im Verdichter und im Motor annähernd gleichbleiben. Diese Anordnung wurde als günstigste Regelung für die Erzielung der besten Verdichtungleistung gewählt.
In der Praxis kann man nach den jeweiligen Betriebsbedingungen, ohne den Rahmen des Erfindungsgedankens zu verlassen, dazu gelangen, die Verdichtung zwischen den beiden Stufen mit beträchtlichen Unterschieden im Ausmasse der primären und sekundären Verdichtung auszuteilen, u. zw. kann man diese Verteilung durch konstruktive Ausbildung ein für allemal feststehend oder durch Anordnung einer Steuereinrichtung veränderlich machen. Eine derartige Steuereinrichtung kann im übrigen auf die Einstellung des Verdichters oder auf das Mass der Verdichtung (Verkleinerung des toten
EMI1.2
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Nach dem neuen Arbeitszyklus setzt sich die vollständige zweistufige Verdichtung zusammen aus einer ersten Stufe in einem Zylinder mit kalten Wandungen, einer Kühlung in einem Aufnehmer, die auf die Gase des Motors und jene des Verdichters wirkt, und aus einer zweiten Stufe in einem Zylinder mit heissen Wandungen. Die Exponenten k der polytropischen Gleichung pvk = konstant sind also für die beiden Verdichtungsstufen verschieden ; für die Regelung der Druekstufen muss man die Möglichkeiten ins Auge fassen, zusammen mit einer für den Betrieb günstigen Endtemperatur eine
EMI2.1
sich der Exponent des motorzylinder mit der Ladung desselben ändert, sehwankt aus dieser Ursache die zweite Verdichtung.
Bei Flugzeugmotoren, die in grossen Höhen arbeiten, kann man die Änderung in der Abgabe des Verdichters durch Änderung der schädlichen Räume des Verdichters erzielen ; diese letztere Änderung kann man von Hand aus oder selbsttätig als Funktion der Hiihenlage steuern. Bei diesen Motoren kann man auch die Änderung der Verdichtung in der zweiten Stufe durch Verstellung des Einlassnockens ausführen, nachdem man eine Verminderung des schädlichen Raumes durchgeführt hat ; letzteres geschieht, um die endgültige Verdichtung zu erhöhen.
Diese Regelung ist also in manchen Fällen von der Regelung der Abgabe unabhängig.
EMI2.2
von der Änderung der Abgabe zu variieren.
PATENT-ANSPRÜCHE :
1. Mehrzylindrige Viertaktbrennkraftmaschine mit einem durch einen Verdichter gespeisten, allen Zylindern gemeinsamen Aufnehmer und mit teilweiser Ladungsübersehiebung von einem Zylinder in einen folgenden gemäss dem Patente Nr. 129641, dadurch gekennzeichnet, dass der Verdichter derart eingestellt ist, dass die Speisung des Aufnehmers noch während des t'berschiebens der Ladung beginnt.
<Desc / Clms Page number 1>
EMI1.1
The invention relates to another. Formation of the type of multi-cylinder four-stroke internal combustion engine described in the parent patent no. 129641, in which each cylinder receives a charge under pressure from another cylinder in the compression period during a large part of the intake stroke and a further amount of charge during the remaining part of the intake stroke This amount of charge is supplied by a sensor that is common to all cylinders and fed by a compressor, whereupon the cylinder charged in this way conveys part of its charge under almost constant pressure via the sensor into another cylinder and then during the following return stroke the rest of this charge to a higher one
Pressure compressed.
According to the parent patent, the partial shifting of the charge from one cylinder to the next takes place in that the intake valve of each cylinder is kept open for the duration of the normal working cycle, while the setting of the compressor is such that it is only opened after the extended one has been closed Valve, d. H. after the end of the shifting of the load, the delivery of the consignment begins.
According to the present invention, the compressor is set in such a way that it begins to supply the receptacle while the load is being pushed over. With this regulation, the capacity of the sensor is increased by that of the cylinders that are thrusting their charge, and the pulsations in the compressor are dampened by the effect of a capacity equal to the sum of the volume of the cylinders and thrusting the volume of the transducer. In some cases, this variant can be very useful due to certain structural conditions and allows the greatest possible advantage to be drawn from the invention.
The parent patent describes an arrangement in which there is a link between the control system for fluctuating outputs of the compressor and that for closing the engine intake valves, so that the two successive compression stages in the compressor and in the engine remain approximately the same. This arrangement was chosen as the most favorable control for achieving the best compaction performance.
In practice, depending on the particular operating conditions, without departing from the scope of the inventive concept, it is possible to divide the compression between the two stages with considerable differences in the extent of the primary and secondary compression, u. zw. You can make this distribution fixed once and for all by constructive training or variable by arranging a control device. Such a control device can also be used to adjust the compressor or to the degree of compression (reduction of the dead
EMI1.2
<Desc / Clms Page number 2>
According to the new working cycle, the complete two-stage compression consists of a first stage in a cylinder with cold walls, cooling in a sensor that acts on the engine and compressor gases, and a second stage in a cylinder with hot walls Walls. The exponents k of the polytropic equation pvk = constant are therefore different for the two compression levels; for the regulation of the pressure levels one has to consider the possibilities, together with an end temperature which is favorable for the operation
EMI2.1
If the exponent of the engine cylinder changes with the charge of the same, the second compression fluctuates for this reason.
In aircraft engines that work at great heights, the change in the output of the compressor can be achieved by changing the harmful spaces of the compressor; this latter change can be controlled manually or automatically as a function of the altitude. With these engines it is also possible to change the compression in the second stage by adjusting the intake cam, after having carried out a reduction in the harmful space; the latter is done to increase the final compression.
In some cases, this regulation is therefore independent of the regulation of the charge.
EMI2.2
to vary from the change in charge.
PATENT CLAIMS:
1. Multi-cylinder four-stroke internal combustion engine with a sensor fed by a compressor, common to all cylinders and with partial charge shifting from one cylinder to a subsequent one according to patent no The load begins to be pushed over.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR709480T | 1930-04-18 | ||
| FR43182T | 1932-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT140112B true AT140112B (en) | 1935-01-10 |
Family
ID=33566416
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT129641D AT129641B (en) | 1930-04-18 | 1931-04-15 | Multi-cylinder four-stroke internal combustion engine. |
| AT140112D AT140112B (en) | 1930-04-18 | 1933-11-07 | Multi-cylinder four-stroke internal combustion engine. |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT129641D AT129641B (en) | 1930-04-18 | 1931-04-15 | Multi-cylinder four-stroke internal combustion engine. |
Country Status (4)
| Country | Link |
|---|---|
| AT (2) | AT129641B (en) |
| DE (1) | DE617121C (en) |
| FR (2) | FR709480A (en) |
| GB (2) | GB365431A (en) |
-
1930
- 1930-04-18 FR FR709480D patent/FR709480A/en not_active Expired
-
1931
- 1931-04-13 GB GB10828/31A patent/GB365431A/en not_active Expired
- 1931-04-15 AT AT129641D patent/AT129641B/en active
-
1932
- 1932-11-17 FR FR43182D patent/FR43182E/en not_active Expired
-
1933
- 1933-11-07 AT AT140112D patent/AT140112B/en active
- 1933-11-08 GB GB31100/33A patent/GB411367A/en not_active Expired
- 1933-11-08 DE DES111637D patent/DE617121C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR43182E (en) | 1934-03-09 |
| GB365431A (en) | 1932-01-21 |
| FR709480A (en) | 1931-08-07 |
| DE617121C (en) | 1935-08-13 |
| GB411367A (en) | 1934-06-07 |
| AT129641B (en) | 1932-09-10 |
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