DE859238C - Compressed air generator for two-stroke internal combustion engines - Google Patents

Compressed air generator for two-stroke internal combustion engines

Info

Publication number
DE859238C
DE859238C DED4711D DED0004711D DE859238C DE 859238 C DE859238 C DE 859238C DE D4711 D DED4711 D DE D4711D DE D0004711 D DED0004711 D DE D0004711D DE 859238 C DE859238 C DE 859238C
Authority
DE
Germany
Prior art keywords
gas turbine
exhaust gas
internal combustion
compressed air
air generator
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
DED4711D
Other languages
German (de)
Inventor
Walter Dipl-Ing Brose
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.)
Weser AG
Original Assignee
Weser 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 Weser AG filed Critical Weser AG
Priority to DED4711D priority Critical patent/DE859238C/en
Application granted granted Critical
Publication of DE859238C publication Critical patent/DE859238C/en
Expired legal-status Critical Current

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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • F02B37/105—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump exhaust drive and pump being both connected through gearing to engine-driven shaft
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • 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)
  • Supercharger (AREA)

Description

Drucklufterzeuger für Zweitaktbrennkraftmaschinen Die Erfindung bezieht sich auf D,rucklufterzeuger für Zweitaktbrennkraftmasch_inen, insbesondere zum Antrieb von Schiffen, deren von einer Abgasturbine angetriebene Spülluft- und Aufladeluftgebläse hintereinander geschaltet sind, und bezweckt, die Leistung der Brennkraftmaschinen zu steigern.Compressed air generator for two-stroke internal combustion engines The invention relates focus on exhaust air generators for two-stroke internal combustion engines, especially for propulsion of ships, whose purge air and supercharging air blowers are driven by an exhaust gas turbine are connected in series, and aims to improve the performance of the internal combustion engines to increase.

Gemäß der Erfindung wird sowohl das Spülluftals auch das Aufladeluftgebläse mit der Kurbelwelle kraftschlüssig verbunden und zwischen der Kurbelwelle und den Druckstufen sowie zwischen der Abgasturbine und den Druckstufen je eine elastische oder Schlupfkupplung angeordnet. Dadurch wird erreicht, daß' die vier zusammengeschalteten Wellen sich nicht ungünstig beeinflussen und die Gebläse entweder nur durch die Kurbelwelle oder die Abgasturbinenwelle oder beide gemeinsam angetrieben werden können. Es ist an sich bekannt, die von einer Abgasturbine getriebenen Spül- und Aufladeluftgebläse hintereinanderzuschalten. Es ist ferner bekannt, das von einer Abgasturbine getriebene Spülluftgebläse mit der Kurbelwelle unter Zwischenschaltung einer elastischen oder Schlupfkupplung kraftschlüssig zu verbinden. In beiden Fällen ist jedoch ein wahlweiser Antrieb der Gebläse nicht möglich.According to the invention, both the scavenging air and the supercharging air blower are used frictionally connected to the crankshaft and between the crankshaft and the Pressure stages as well as an elastic one between the exhaust gas turbine and the pressure stages or slip clutch arranged. It is thereby achieved that 'the four interconnected Waves don't adversely affect each other and the fans just go through that either Crankshaft or the exhaust gas turbine shaft or both are driven together can. It is known per se, the flushing and driven by an exhaust gas turbine To connect the charge air blower in series. It is also known that from a Exhaust gas turbine driven purge air fan with the crankshaft with interconnection a flexible or slip clutch to connect positively. In both cases however, optional drive of the fan is not possible.

Die Zeichnung zeigt wesenhaft ein Ausführungsbeispiel der Erfindung, teilweise im Schnitt. Das Spülluftgebläse r1 wird von der Kurbelwelle B einer Brennkraftmaschine angetrieben. Zur Abdämpfung der Torsionsschwingungen erfolgt dabei der Antrieb des Gebläses A durch die Zahnräder Cl, C2, C3, C4 sowie eine zwischengeschaltete Flüssigkeitskupplung D. Auf das Antriebsrad C3 des Spülluftgebläses A arbeitet gleichfalls die Abgasturbine E, so daß. die durch die Abgasturbine E aufgebrachte Leistung die von der Kurbelwelle B für den Antrieb des Spülluftgebläses A aufzubringende Leistung entsprechend vermindert. Um die Brennkraftmaschine möglichst hoch aufladen zu können, wird z. B. durch den Nachladeschlitz irn Arbeitszylinder der Brennkraftmaschine nach Abschluß der Spül- und Auspuffschlitze durch den Hauptarbeitskolben Aufladeluft (Frischluft) in den Zvlinder geblasen. Der Druck dieser Aufladeluft ist dabei beträchtlich höher als der Spülluftdruck zum Ausspülen der Verbrennungsgase aus dem Arbeitszylinder. Zur Erzeugung dieser hohen gespannten Aufladeluft dient nunmehr das Gebläse F. Der Antrieb dieses Gebläses F erfolgt von einem Räder-, g etriebe Gl, G2, wobei das Antriebsrad Gl mit dem Antriebsrad C3 des Spülluftgebläses A organisch verbunden ist. Das für das Nachladegebläse F dienende Antriebsrad G1 mit dem Ritzel G2 liegt daher, ebenso wie der Antrieb C3, C4 für das Spülluftgebläse, hinter der Flüssigkeitskupplung D. Um für das Nachladegebläse F möglichst mit einem einfachen Gebläserad auskommen zu können, wird der Saugraum H dieses Gebläses mit der Druckleitung T des Spülluftgebläses A verbunden, so daß das Aufladegebläse F nunmehr gewissermaßen als Zweistufengebläse arbeitet. Zwischen der Abgasturbine E und dem Ritzel C5, welches auf das Antriebsrad C3 des Spülluftgebläses A arbeitet, kann für den Drehzahlausgleich eine Flüssigkeitskupplung K eingebaut «-erden. Damit der Drucklufterzeuger auch bei Rückwärtsfahrt mit bester Wirkung verwendet werden kann, wird bei Rückwärtsfahrt der Zustrom der Abgase zur Abgasturbine E mittels einer Umschaltklappe L abgeschaltet, wobei die Abgase unmittelbar in die Abgassammelleitung M geführt werden. Wird zwischen Abgasturbine E und ihrem Triebritzel C5 eine Flüssigkeitskupplung eingeschaltet, die bei- Umstellung des Motors von Vorwärtsfahrt auf Rückwärtsfahrt entleert wird, so wird der treibende Läufer der Flüssigkeitskupplung mit einem hydraulischen Bremsläufer X versehen, der beim Umschalten von Vorwärtsfahrt auf Rückwärtsfahrt mit Flüssigkeit gefüllt wird, so daß nach dem Entleeren der Flüssigkeitskupplung K die in der Abgasturbine E noch vorhandene Energie durch den Bremsläufer N abgefangen bzw. vernichtet wird, so daß nach Entleeren der Kupplung K die Abgasturbine in ihrer Drehzahl nicht unzulässig hohe Werte annehmen kann. Ist eine Umschaltklappe L vorhanden, so kann die Abgasturbine E mit ihrem Triebritzel C5 auch starr gekuppelt werden, wobei die Flüssigkeitskupplung K und der hydraulische Bremsläufer N fortfallen. Um ein möglichst hohes Luftgewicht imArbeitszylinder der Brennkraftmaschine zu erhalten, ist in die Druckleitung des Auflade-Cr ein Luftkühler O eingebaut.The drawing essentially shows an embodiment of the invention, partially in section. The purge air fan r1 is driven by the crankshaft B of an internal combustion engine. To dampen the torsional vibrations, the fan A is driven by the gears Cl, C2, C3, C4 and an interposed fluid coupling D. The exhaust gas turbine E also operates on the drive wheel C3 of the scavenging air fan A, so that. the power applied by the exhaust gas turbine E correspondingly reduces the power to be applied by the crankshaft B for driving the scavenging air blower A. In order to be able to charge the internal combustion engine as high as possible, z. B. through the reloading slot in the working cylinder of the internal combustion engine after completion of the flushing and exhaust slots by the main working piston, charging air (fresh air) is blown into the cylinder. The pressure of this supercharging air is considerably higher than the scavenging air pressure for scavenging the combustion gases from the working cylinder. In order to generate this high tensioned supercharging blower g etriebe Gl, G2 now serves F. The driving of this blower F is carried out by a gear pumps, wherein the drive wheel Gl is organically connected to the drive wheel of the C3 Spülluftgebläses A. The drive wheel G1 with the pinion G2, which is used for the reloading fan F, is therefore, like the drive C3, C4 for the purge air fan, behind the fluid coupling D. Fan connected to the pressure line T of the scavenging air blower A , so that the supercharging blower F now operates as a two-stage blower, as it were. Between the exhaust gas turbine E and the pinion C5, which works on the drive wheel C3 of the scavenging air blower A, a fluid coupling K can be installed for speed compensation. So that the compressed air generator can also be used with the best effect when reversing, the flow of exhaust gases to the exhaust gas turbine E is switched off by means of a switchover flap L when reversing, the exhaust gases being led directly into the exhaust manifold M. If a fluid coupling is switched on between the exhaust gas turbine E and its drive pinion C5, which is emptied when the engine is switched from forward travel to reverse travel, the driving rotor of the fluid coupling is provided with a hydraulic brake rotor X, which is filled with fluid when switching from forward travel to reverse travel so that after the fluid coupling K has been emptied, the energy still present in the exhaust gas turbine E is intercepted or destroyed by the brake rotor N, so that after the clutch K has been emptied, the exhaust gas turbine cannot adopt inadmissibly high speeds. If a switchover flap L is present, the exhaust gas turbine E can also be rigidly coupled with its drive pinion C5, the fluid coupling K and the hydraulic brake rotor N being omitted. In order to obtain the highest possible air weight in the working cylinder of the internal combustion engine, an air cooler O is built into the pressure line of the supercharger.

Claims (3)

PATENTANSPRÜCHE: i. Drucklufterzeuger für Zweitaktbrennkraftmaschinen, insbesondere zum Antrieb von Schiffen, deren von einer Abgasturbine getriebene Spülluft- und Aufladegebläse hintereinandergeschaltet sind, dadurch gekennzeichnet, dad sowohl das Spülluft- (A) als auch das Aufladeluftgebläse (F) mit der Kurbelwelle (B) kraftschlüssig verbunden sind und zwischen der Kurbelwelle (B) und den Druckstufen (A, F) sowie zwischen der Abgasturbine (E) und den Druckstufen (A, F) eine elastische oder Schlupfkupplung (D und K) angeordnet ist. PATENT CLAIMS: i. Compressed air generator for two-stroke internal combustion engines, in particular for driving ships, whose purge air and supercharger fans, driven by an exhaust gas turbine, are connected in series, characterized in that both the scavenging air (A) and the supercharging air fan (F) are positively connected to the crankshaft (B) and an elastic or slip clutch (D and K) is arranged between the crankshaft (B) and the pressure stages (A, F) and between the exhaust gas turbine (E) and the pressure stages (A, F). 2. Drucklufterzeuger nach Anspruch i, dadurch gekennzeichnet, daß gegebenenfalls unter Fortfall der elastischen oder Schlupfkupplung (K) zwischen der Abgasturbine (E) und den Druckstufen (A, F) in der Abgasleitung in an sich bekannter Weise eine Umsteuerklappe (L) vorgesehen ist, die bei Rückwärtsfahrt den Zustrom der Abgase zur Turbine (E) sperrt und eine Leitung (M) ins Freie öffnet. 2. Compressed air generator after Claim i, characterized in that, optionally with the elimination of the elastic or slip clutch (K) between the exhaust gas turbine (E) and the pressure stages (A, F) A reversing flap (L) is provided in the exhaust pipe in a manner known per se which blocks the flow of exhaust gases to the turbine (E) when reversing and a Line (M) opens to the outside. 3. D'rucklufterzeuger nach Anspruch i, dadurch gekennzeichnet, daß@ zwischen der Abgasturbinenwelle und der Druckstufe (F) außer einer Flüssigkeitskupplung (K) ein hydraulischer Bremsläufer (N) vorgesehen ist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 547 939, 712 5831 schweizerische Patentschriften Nr. io8 786, 2o6 8o5; USA: Patentschrift Nr. 1 6i2 i43.3. D'rucklufterzeuger according to claim i, characterized in that @ between the exhaust gas turbine shaft and the pressure stage (F) apart from a fluid coupling (K) a hydraulic brake rotor (N) is provided. Attached publications: German patent specifications No. 547 939, 712 5831 Swiss patent specifications No. io8 786, 2o6 8o5; USA: Patent No. 1,612,143.
DED4711D 1942-06-30 1942-06-30 Compressed air generator for two-stroke internal combustion engines Expired DE859238C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED4711D DE859238C (en) 1942-06-30 1942-06-30 Compressed air generator for two-stroke internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED4711D DE859238C (en) 1942-06-30 1942-06-30 Compressed air generator for two-stroke internal combustion engines

Publications (1)

Publication Number Publication Date
DE859238C true DE859238C (en) 1952-12-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729978A (en) * 1994-08-23 1998-03-24 Mercedes-Benz Ag Supercharged internal combustion engine with capability for mechanical step-up drive of an exhaust gas turbocharger
WO2008135288A1 (en) * 2007-05-08 2008-11-13 Voith Patent Gmbh Drive train, particularly for motor vehicles
DE102008026033A1 (en) * 2008-05-30 2009-12-10 Voith Patent Gmbh Hydrodynamic machine, particularly hydrodynamic clutch for drive train, particularly motor vehicle drive train, has primary wheel and secondary wheel, which together form torus-shaped working chamber
DE102009038771A1 (en) 2009-08-27 2011-03-03 Voith Patent Gmbh Transmission for turbo-compound system and drive train, particularly of motor vehicle, has hydrodynamic clutch, which has pump wheel and turbine wheel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH108786A (en) * 1923-11-15 1925-02-02 Schneider Heinrich Internal combustion engine with exhaust gas turbine.
US1612143A (en) * 1925-03-05 1926-12-28 Gen Electric Internal-combustion engine
DE547939C (en) * 1928-11-03 1932-03-30 Alfred Buechi Method for regulating the pressure in the exhaust pipe of an internal combustion engine with exhaust gas centrifugal supercharging
CH206805A (en) * 1937-11-09 1939-08-31 Maschf Augsburg Nuernberg Ag Flushing and supercharging fans on internal combustion engines, in particular two-stroke diesel aircraft engines.
DE712583C (en) * 1937-03-26 1941-10-22 Maschf Augsburg Nuernberg Ag Vehicle internal combustion engine for changing altitudes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH108786A (en) * 1923-11-15 1925-02-02 Schneider Heinrich Internal combustion engine with exhaust gas turbine.
US1612143A (en) * 1925-03-05 1926-12-28 Gen Electric Internal-combustion engine
DE547939C (en) * 1928-11-03 1932-03-30 Alfred Buechi Method for regulating the pressure in the exhaust pipe of an internal combustion engine with exhaust gas centrifugal supercharging
DE712583C (en) * 1937-03-26 1941-10-22 Maschf Augsburg Nuernberg Ag Vehicle internal combustion engine for changing altitudes
CH206805A (en) * 1937-11-09 1939-08-31 Maschf Augsburg Nuernberg Ag Flushing and supercharging fans on internal combustion engines, in particular two-stroke diesel aircraft engines.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729978A (en) * 1994-08-23 1998-03-24 Mercedes-Benz Ag Supercharged internal combustion engine with capability for mechanical step-up drive of an exhaust gas turbocharger
WO2008135288A1 (en) * 2007-05-08 2008-11-13 Voith Patent Gmbh Drive train, particularly for motor vehicles
US8191371B2 (en) 2007-05-08 2012-06-05 Voith Patent Gmbh Drive train, particularly for motor vehicles
DE102008026033A1 (en) * 2008-05-30 2009-12-10 Voith Patent Gmbh Hydrodynamic machine, particularly hydrodynamic clutch for drive train, particularly motor vehicle drive train, has primary wheel and secondary wheel, which together form torus-shaped working chamber
DE102008026033B4 (en) * 2008-05-30 2017-08-24 Voith Patent Gmbh Powertrain with a hydrodynamic machine
DE102009038771A1 (en) 2009-08-27 2011-03-03 Voith Patent Gmbh Transmission for turbo-compound system and drive train, particularly of motor vehicle, has hydrodynamic clutch, which has pump wheel and turbine wheel

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