DE967299C - Internal combustion engine, in particular two-stroke internal combustion engine - Google Patents

Internal combustion engine, in particular two-stroke internal combustion engine

Info

Publication number
DE967299C
DE967299C DEK4142D DEK0004142D DE967299C DE 967299 C DE967299 C DE 967299C DE K4142 D DEK4142 D DE K4142D DE K0004142 D DEK0004142 D DE K0004142D DE 967299 C DE967299 C DE 967299C
Authority
DE
Germany
Prior art keywords
cylinder
internal combustion
combustion engine
pressure
exhaust
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
Application number
DEK4142D
Other languages
German (de)
Inventor
Alfred Jante
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DEK4142D priority Critical patent/DE967299C/en
Application granted granted Critical
Publication of DE967299C publication Critical patent/DE967299C/en
Expired legal-status Critical Current

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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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/04—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues in exhaust systems only, e.g. for sucking-off combustion gases
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Description

Die Erfindung betrifft eine Brennkraftmaschine, insbesondere Zweitaktbrennkraftmaschine, hei der die Ladung des Arbeitszylinders durch bei seinem Auspuffvorgang ausgelöste Druckwellen nach Abschluß der Einlaßöffnungen nach Druck und Menge erhöht wird, wobei in einer an den Arbeitszylinder angeschlossenen, die Abgase aufnehmenden Leitung oder einem Leitungssystem Prallflächen z. B. in Gestalt einer Veren ung der Leitung von solchem 9 #, Ouerschnitt und solcher Entfernung vom Zylinder vorgesehen sind, daß die bei Eröffnung der Verbindung zwischen Zylinder und Leitung entstehende und darauf von der Prallfläche zurückgeworfene Druckwelle positiv ist, vor dem Wiederabschluß der Verbindungsöffnung in den Zylinder gelangt und dadurch den Druck der im Zylinder befindlichen Verbrennungsluft erhöht, nach Patent 946 930. The invention relates to an internal combustion engine, in particular a two-stroke internal combustion engine, that is, the charge of the working cylinder is increased by pressure waves triggered during its exhaust process after the inlet openings have been closed according to pressure and quantity. B. in the form of a constriction of the line of such 9 #, cross section and such a distance from the cylinder are provided that the pressure wave that occurs when the connection between the cylinder and the line is opened and is reflected back from the baffle is positive, before the connection opening is closed again in reaches the cylinder and thereby increases the pressure of the combustion air in the cylinder, according to patent 946 930.

Der Erfindung liegt ein Vorschlag zur Verbesserung der Brennkraftmaschine nach dem Hauptpatent zugrunde. Gemäß diesem Vorschlag weist erfindtings,gemäß die Abgasleitung der Maschine, in Ausströmrichtung der Abgase gesehen, zwischen Zylinder und Prallfläche eine Erweiterung auf, so daß eine zwischen der Auspuffwelle und deren positiven Rückwürfen liegende Unterdruckwelle entsteht, die während der Spülung im Zylinder den Druck herabsetzt und dadurch das Spülgeb-läse entlastet. Erweiterungen im Abgassystem von Brennkraftmaschinen sind an sich bekannt, und zwar bei Schalldämpfern und bei mit -einem anderen als dem erfindungsgemäßen Aufladeverfahren arbeitenden Maschinen.The invention is a proposal for improving the internal combustion engine based on the main patent. According to this proposal, inventions, according to the Exhaust pipe of the machine, seen in the outflow direction of the exhaust gases, between the cylinder and baffle an extension so that one between the exhaust shaft and whose positive thrown back negative pressure wave is created during the flushing reduces the pressure in the cylinder and thereby relieves the pressure on the flushing fan. Extensions in the exhaust system of internal combustion engines are known per se, specifically in the case of silencers and with a charging method other than the one according to the invention Machinery.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch dargestellt. Die Abbildung zeigt den Zylinder a einer Zweitakthrennkraftmaschine und dessen Auspuffleitungb im Längsschnitt. In der Auspuffleitung ist eine Prallfläche, Z. B. eine Düse c, vorgesehen, welche- zwar für die Auspuffdruckwelle als Prallfläche wirkt, jedoch den abströmenden Abgasen keinen nennenswerten Widerstand bietet. Beim Öffnen der Auslaßöffnung des ZvlindeTs durch den Kolben d entsteht eine Druck#velle, die mit Schallgeschwindigkeit du.rch die Auspuffleitung b läuft und an der Düse c zum Teil gegen den Zylinder hin zurückgeworfen wird. Durch entsprechende Bemessung des Abstandes L der Düse c von der Auslaßöffnung des Zylinders wird erreicht, daß dieser positive Rückwurf der Auspuffdruckwelle vor dem Abschluß der Auslaßöffnung in den Zylinder gelangt, wobei er letzteren von der Auspuffleitung her mit Spülluft nachfüllt. Voraussetzung hierfür ist natürlich, daß inzwischen nicht nur der Zvlinder, sondern auch das erste Stück der Auspuifleitung mit Spülluft gefüllt ist, wie es normalerweise, dem üblichen Spülluftaufwand zufolge, eintritt.An exemplary embodiment of the invention is shown schematically in the drawing. The figure shows the cylinder a of a two-stroke racing engine and its exhaust pipe b in longitudinal section. A baffle surface, for example a nozzle c, is provided in the exhaust line, which, although it acts as a baffle surface for the exhaust pressure wave, does not offer any significant resistance to the exhaust gases flowing out. When the outlet opening of the cylinder is opened by the piston d , a pressure wave is created which runs at the speed of sound through the exhaust line b and is partly thrown back towards the cylinder at the nozzle c. By appropriately dimensioning the distance L of the nozzle c from the outlet opening of the cylinder it is achieved that this positive reflection of the exhaust pressure wave reaches the cylinder before the outlet opening is closed, the latter being refilled with scavenging air from the exhaust line. The prerequisite for this is, of course, that not only the cylinder but also the first section of the exhaust line is filled with scavenging air, as it normally occurs due to the usual scavenging air effort.

Gemäß der Erfindung weist die Auspuffleitung b, in Ausströmrichtung der Abgase gesehen, zwischen dem Zylinder a und der Düse c im Abstand L, vom Zylinder eine Erweiterung c auf. Während des Vorbeilaufens der Auspuffdruckwelle an dieser Erweiterung entsteht eine Unterdruckwelle, die zum Zylinder zurückläuft und dort vorübergehend, bevor der positive Rückwurf der an der Düse c zurückgeworfenen Auspuffdruckwelle im Zylinder ankommt, den Druck herabsetzt, so daß das Spül- gebläse entlastet wird. Die Unterdruckwelle liegt somit zwischen der Auspuffdruckwelle und deren positivem Rückwurf.According to the invention, the exhaust line b, viewed in the outflow direction of the exhaust gases, has an expansion c between the cylinder a and the nozzle c at a distance L from the cylinder. While of passing the exhaust pressure wave at this expansion creates a negative pressure wave, which travels back to the cylinder and there temporarily before the positive discard the c at the nozzle reflected exhaust pressure wave arrives in the cylinder, lowers the pressure so that the rinsing fan is relieved. The negative pressure wave thus lies between the exhaust pressure wave and its positive return.

Die erfindungsgemäße Erweiterung e kann nicht nur in den die Auspuffgase abführenden mit einer Prallfläche versehenen Leitungen, sondern auch in den nach dem Hauptpatent zu demselben Zweck vorgesehenen, am Ende geschlossenen Leitungen und auch in der Spülluftleitung zwischen Gebläse und Zylinder vorgesehen sein, wo sie in genau gleicher Weise zwischen der Auspuffdruckwelle und deren positiven Rückwürfen eine Unterdruckwelle erzeugt.The extension e according to the invention can not only be used in the exhaust gases discharging lines provided with a baffle, but also in the after the main patent provided for the same purpose, closed lines at the end and also be provided in the purge air line between the fan and cylinder, where they in exactly the same way between the exhaust pressure wave and its positive throwbacks a negative pressure wave is generated.

Claims (1)

PATENTANSPRUCH: Brennkraftmaschine, insbesondere Zweitaktbrennkraftmaschine, bei der die Ladung des Arbeitszylinders durch bei seinem Auspuffvorgang ausgelöste Druckwellen nach Abschluß der Einlaßöffnungen nach Druck und Menge erhöht wird, wobei in einer an den Arbeitszylinder angeschlossenen, die Abgase aufnehmenden Leitung oder einem Leitungssystem Prallflächen z. B. in Gestalt einer Verengung der Leitung von solchem Querschnitt und solcher Entfernung vom Zylinder vorgesehen sind, daß die bei Eröffnung der Verbindung zwischen Zylinder und Leitung entstehende und darauf von der Prallfläche zurückgeworfene Druckwelle positiv ist, vor dem Wiederabschluß der Verbindungsöffnung in den Zylinder gelangt und dadurch den Druck der im Zylinder befindlichen Verbrennungsluft erhöht, nach Patent 946 930, dadurch gekennzeichnet, daß die Leitung (b), in Ausströnirichtung der Ab- gase gesehen, zwischen Zylinder (a) und Prallfläche (c) eine Erweiterung (e) aufweist, so daß eine zwischen der Auspuffwelle und deren positiven Rückwürfen liegende Unterdruckwelle entsteht, die während der Spülung im Zy- linder den Druck herabsetzt und dadurch das Spülgebläse entlastet. In Betracht gezogene DruckSrhriften: Deutsche Patentschriften Nr. 707 367, 698 589, 580923, 262984, 510256; Mitteilungen des deutschen Kraftfahrzeuginstituts der Sächsischen Technischen Hochschule Dresden, 1934 -S- 23/24; Forschung auf dem Gebiete des Ingenieurwesens, 1934, Bd. 5, Nr. 5, S.:2:28; USA.-Patentschrift Nr. :2 102 559. PATENT CLAIM: Internal combustion engine, in particular two-stroke internal combustion engine, in which the charge of the working cylinder is increased by pressure waves triggered during its exhaust process after the inlet openings have been closed in terms of pressure and quantity. B. are provided in the form of a constriction of the line of such a cross-section and such a distance from the cylinder that the pressure wave that occurs when the connection between the cylinder and the line is opened and then thrown back from the baffle is positive, passes into the cylinder before the connection opening is closed again thereby increasing the pressure of the combustion air in the cylinders, according to Patent 946 930 characterized in that the line (b), as seen in Ausströnirichtung the exhaust gases between the cylinder (a) and rebounding surface (c) has an extension (e), so that a low pressure wave is created between the exhaust shaft and its positive thrown backs, which reduces the pressure in the cylinder during the flushing and thereby relieves the flushing fan. Relevant publications: German Patent Nos. 707 367, 698 589, 580923, 262984, 510256; Communications from the German Motor Vehicle Institute of the Saxon Technical University of Dresden, 1934 -S- 23/24; Research in the Field of Engineering, 1934, Vol. 5, No. 5, pp .: 2:28; U.S. Patent No.: 2,102,559.
DEK4142D 1940-08-27 1940-08-27 Internal combustion engine, in particular two-stroke internal combustion engine Expired DE967299C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK4142D DE967299C (en) 1940-08-27 1940-08-27 Internal combustion engine, in particular two-stroke internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK4142D DE967299C (en) 1940-08-27 1940-08-27 Internal combustion engine, in particular two-stroke internal combustion engine

Publications (1)

Publication Number Publication Date
DE967299C true DE967299C (en) 1957-10-31

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998029644A1 (en) * 1996-12-30 1998-07-09 Martin Wimmer Process for generating a physical power with reciprocating internal combustion engines
FR2761729A1 (en) * 1997-04-07 1998-10-09 Alain Godou RELAXATION POT FOR A TWO-STROKE ENGINE EXHAUST
EP1255919A1 (en) * 2000-02-14 2002-11-13 Stephen Oberhardt Exhaust pulse control unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262984C (en) *
DE510256C (en) * 1929-10-17 1930-10-17 Hans Vogel Two-stroke internal combustion engine with scavenging and charging pump and inlet and outlet slots controlled by the working piston
DE580923C (en) * 1930-11-05 1933-07-19 Gabriel Becker Muffler for internal combustion engines through acoustic filters
US2102559A (en) * 1933-08-01 1937-12-14 Kadenacy Michel Explosion or internal combustion engine
DE698589C (en) * 1936-09-13 1940-11-13 Eberspaecher J Silencer for intake and exhaust sound with sound reflection and interference of the incoming and reflected sound, especially for internal combustion engines
DE707367C (en) * 1938-07-10 1941-06-20 Mont Kessel Herpen & Co K G Silencer for internal combustion engines whose exhaust gases are used to heat a boiler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262984C (en) *
DE510256C (en) * 1929-10-17 1930-10-17 Hans Vogel Two-stroke internal combustion engine with scavenging and charging pump and inlet and outlet slots controlled by the working piston
DE580923C (en) * 1930-11-05 1933-07-19 Gabriel Becker Muffler for internal combustion engines through acoustic filters
US2102559A (en) * 1933-08-01 1937-12-14 Kadenacy Michel Explosion or internal combustion engine
DE698589C (en) * 1936-09-13 1940-11-13 Eberspaecher J Silencer for intake and exhaust sound with sound reflection and interference of the incoming and reflected sound, especially for internal combustion engines
DE707367C (en) * 1938-07-10 1941-06-20 Mont Kessel Herpen & Co K G Silencer for internal combustion engines whose exhaust gases are used to heat a boiler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998029644A1 (en) * 1996-12-30 1998-07-09 Martin Wimmer Process for generating a physical power with reciprocating internal combustion engines
FR2761729A1 (en) * 1997-04-07 1998-10-09 Alain Godou RELAXATION POT FOR A TWO-STROKE ENGINE EXHAUST
EP0870913A1 (en) * 1997-04-07 1998-10-14 Alain Godou Silencer for the exhaust of a two-stroke engine
EP1255919A1 (en) * 2000-02-14 2002-11-13 Stephen Oberhardt Exhaust pulse control unit
EP1255919A4 (en) * 2000-02-14 2004-05-06 Stephen Oberhardt Exhaust pulse control unit
US6840037B2 (en) 2000-02-14 2005-01-11 Epu Limited Exhaust pulse control unit

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