DE10228258A1 - Internal combustion engine used as a two- and four-stroke engine comprises valves which are all inlet valves in the form of coupled spring valves controlled only by pressure difference - Google Patents
Internal combustion engine used as a two- and four-stroke engine comprises valves which are all inlet valves in the form of coupled spring valves controlled only by pressure difference Download PDFInfo
- Publication number
- DE10228258A1 DE10228258A1 DE2002128258 DE10228258A DE10228258A1 DE 10228258 A1 DE10228258 A1 DE 10228258A1 DE 2002128258 DE2002128258 DE 2002128258 DE 10228258 A DE10228258 A DE 10228258A DE 10228258 A1 DE10228258 A1 DE 10228258A1
- Authority
- DE
- Germany
- Prior art keywords
- valves
- air
- pressure difference
- internal combustion
- crankshaft
- 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- Withdrawn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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
Description
Der neue Motor enthält Elemente des Zwei- und Viertaktmotors.The new engine contains elements of the two- and four-stroke engine.
Er unterscheidet sich von herkömmlichen Motoren
aber wesentlich durch folgende, grundsätzliche Merkmale:
Er besitzt
lediglich Einlassventile, und zwar so viele, wie es der Zylinderquerschnitt
größen- und zahlenmäßig zulässt. Diese
Einlassventile sind als gekoppelte Federventile ausgebildet und
werden lediglich durch den Druckunterschied gesteuert. Die übliche Ventilsteuerung
entfällt
somit.It differs from conventional motors in the following basic features:
It only has intake valves, and as many as the cylinder cross-section allows in terms of size and number. These inlet valves are designed as coupled spring valves and are only controlled by the pressure difference. The usual valve control is therefore no longer necessary.
Die Abgasabführung erfolgt durch Schlitze, die über dem unteren Totpunkt angeordnet sind und die von ihrem Querschnitt her dem Lufteinlass entsprechen.The exhaust gas is discharged through slots that are above the bottom dead center are arranged and their cross-section correspond to the air intake.
Dabei muss der Temperaturunterschied zwischen Ein- und Auslass berücksichtigt werden.Thereby the temperature difference between inlet and outlet become.
Der Kraftstoff wird eingespritzt.The fuel is injected.
Der Zylinderkopf ist als Vorkammer für die Verbrennungs- und Spülluft ausgebildet, welche von einem Luftverdichter beschickt wird.The cylinder head is a prechamber for the combustion and purge air trained, which is fed by an air compressor.
Dieser Luftverdichter wird von der Kurbelwelle mittels Zahnriemen angetrieben. Die Übersetzung wird bestimmt vom Verwendungszweck des Motors.This air compressor is from the Crankshaft driven by toothed belt. The translation is determined by Intended use of the engine.
Auf der Kurbelwelle sitzt ein Turbolader, dem Abgase und Spülluftüberschuss zugeleitet werden.A turbocharger sits on the crankshaft, the exhaust gases and excess air be forwarded.
Im Zylinderkopf befindet sich eine Düse, durch die während der Beschleunigungsphase reiner Sauerstoff eingespritzt wird. Die Steuerung dafür erfolgt drehzahlabhängig elektronisch.There is one in the cylinder head Nozzle, through the while pure oxygen is injected during the acceleration phase. The Control for it takes place depending on the speed electronically.
Die Einspritzung des Sauerstoffs erfolgt nach dem Schließen der Auslassschlitze durch den Kolben.Oxygen injection takes place after closing the outlet slots through the piston.
Das Mitführen des Sauerstoffs dafür ist durchaus möglich; langfristig könnten die Sauerstoffbehälter Bestandteil des Fahrzeugchassis sein.Carrying the oxygen for this is definitely possible; could in the long run the oxygen tanks Be part of the vehicle chassis.
Arbeitsweise:Operation:
Jeder Abwärtshub ist ein Arbeitshub. Beim Abwärtsgehen des Kolbens bleiben die Einlassventile durch Verbrennungsdruck und Ventilfederdruck so lange geschlossen, bis der Druck im Zylinder geringer geworden ist als der Luftdruck in der Vorkammer. Dann öffnen die Ventile und der gesamte Zylinderinhalt wird vollständig ausgespült und mit Frischluft gefüllt. Luftüberschuss bewirkt zudem, dass keine Abgase zurückbleiben. Verluste entstehen dabei nicht, denn die in Abgas und Spülluft enthaltene Energie wird im Turbolader wirksam.Each down stroke is a work stroke. When going down of the piston remain the intake valves due to combustion pressure and Valve spring pressure closed until the pressure in the cylinder has become lower than the air pressure in the antechamber. Then they open Valves and the entire cylinder contents are completely rinsed out and with Fresh air filled. Excess air also ensures that no exhaust gases remain. Losses arise not because the energy contained in the exhaust gas and purge air will effective in the turbocharger.
Beim Aufwärtsgehen des Kolbens und dem Schließen der Auslassschlitze entsteht Druckausgleich zwischen Zylinder und Vorkammer. Die Federventile schließen dann.When the piston goes up and the valve closes Outlet slots create pressure equalization between cylinder and prechamber. The spring valves close then.
Die Luft im Zylinder steht nun schon unter einem gewissen Vordruck, was eine bessere Verdichtung bewirkt. Dadurch ergibt sich ein Turboeffekt schon im unteren Drehzahlbereich.The air in the cylinder is already there under a certain pre-pressure, which causes a better compression. This results in a turbo effect even in the lower speed range.
Vorteile:Benefits:
- – „Je mehr Teile, desto mehr Nachteile.": Die Ventilsteuerung entfällt. Somit wird der Motor leichter und billiger. Er ist geeignet für den Einsatz z.B. in Entwicklungsländern, aber auch varteilhaft bei der Praduktion im „teuren" Standort Deutschland.- "The more Parts, the more disadvantages. ": The valve control is omitted. This makes the engine lighter and cheaper. It is suitable for the Use e.g. in developing countries, but also advantageous for the production in the "expensive" location Germany.
- – Größeres Leistungspotenzial des Motors durch eine erhebliche Verringerung der Luftreibungsverluste- Greater performance potential of the engine through a significant reduction in air friction losses
- – Der Verbrennungsraum wird vollkommen ausgespült und mit Frischluft aufgeladen, was bei Motoren bisheriger Bauart nicht möglich ist. Dadurch wird die Verbrennung sauberer, die Leistung größer und die Umwelt wird weitaus weniger belastet: Mehr Leistung bei gleichem Verbrauch- The Combustion chamber is completely rinsed out and charged with fresh air, which is not possible with motors of the previous type. This will the combustion is cleaner, the output is greater and the environment is vast less stressed: More performance with the same consumption
- – Oxygenstarthilfe beim Anfahren aus dem Stand (an Kreuzungen und Ampelanlaggen in Ballungsgebieten, in Staus etc.) zur zusätzlichen Umweltentlastung- Oxygen starting aid when starting from a standstill (at intersections and traffic lights in Conurbations, in traffic jams etc.) for additional environmental relief
- – bei Einsatz in Flugzeugen Energieeinsparung beim Erzeugen und Bereitstellen der Lade- und Spülluft- at Use in aircraft Saving energy when generating and providing the charge and purge air
- EVEV
- = Einlassventile= intake valves
- ZZ
- = Zündkerze (Injektor)= spark plug (Injector)
- KK
- = Kolben= piston
- VRVR
- = Verbrennungsraum= combustion chamber
- ASAS
- = Auslassschlitze= outlet slots
- PP
- = Pleuelstange= connecting rod
- KWKW
- = Kurbelwelle= crankshaft
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002128258 DE10228258A1 (en) | 2002-06-25 | 2002-06-25 | Internal combustion engine used as a two- and four-stroke engine comprises valves which are all inlet valves in the form of coupled spring valves controlled only by pressure difference |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002128258 DE10228258A1 (en) | 2002-06-25 | 2002-06-25 | Internal combustion engine used as a two- and four-stroke engine comprises valves which are all inlet valves in the form of coupled spring valves controlled only by pressure difference |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10228258A1 true DE10228258A1 (en) | 2004-01-22 |
Family
ID=29761382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002128258 Withdrawn DE10228258A1 (en) | 2002-06-25 | 2002-06-25 | Internal combustion engine used as a two- and four-stroke engine comprises valves which are all inlet valves in the form of coupled spring valves controlled only by pressure difference |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10228258A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE309349C (en) * | ||||
DE4410934A1 (en) * | 1993-03-31 | 1994-10-06 | Mitsubishi Heavy Ind Ltd | Crankcase compression two-stroke engine |
DE19903579A1 (en) * | 1999-01-29 | 2000-08-03 | Daimler Chrysler Ag | Pressure charged internal combustion engine has means of blowing compressed air from pressure source into air compressor section of pressure charger or into upstream air suction passage opening out into it |
-
2002
- 2002-06-25 DE DE2002128258 patent/DE10228258A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE309349C (en) * | ||||
DE4410934A1 (en) * | 1993-03-31 | 1994-10-06 | Mitsubishi Heavy Ind Ltd | Crankcase compression two-stroke engine |
DE19903579A1 (en) * | 1999-01-29 | 2000-08-03 | Daimler Chrysler Ag | Pressure charged internal combustion engine has means of blowing compressed air from pressure source into air compressor section of pressure charger or into upstream air suction passage opening out into it |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8122 | Nonbinding interest in granting licenses declared | ||
8139 | Disposal/non-payment of the annual fee |