[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

DE3439999C1 - Four-stroke internal combustion engine with two exhaust turbochargers - Google Patents

Four-stroke internal combustion engine with two exhaust turbochargers

Info

Publication number
DE3439999C1
DE3439999C1 DE3439999A DE3439999A DE3439999C1 DE 3439999 C1 DE3439999 C1 DE 3439999C1 DE 3439999 A DE3439999 A DE 3439999A DE 3439999 A DE3439999 A DE 3439999A DE 3439999 C1 DE3439999 C1 DE 3439999C1
Authority
DE
Germany
Prior art keywords
exhaust gas
internal combustion
combustion engine
exhaust
valve
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
DE3439999A
Other languages
German (de)
Inventor
Michael 8079 Buxheim Roßmann
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Priority to DE3439999A priority Critical patent/DE3439999C1/en
Application granted granted Critical
Publication of DE3439999C1 publication Critical patent/DE3439999C1/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
    • 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
    • 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
    • F02B37/001—Engines characterised by provision of pumps driven at least for part of the time by exhaust using exhaust drives arranged in parallel
    • 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
    • F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
    • 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
    • F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
    • 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
    • F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
    • F02B37/025—Multiple scrolls or multiple gas passages guiding the gas to the pump drive
    • 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
    • F02B37/22—Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide 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
    • 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

Landscapes

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

Abstract

The invention relates to a four-stroke internal combustion engine with two exhaust turbochargers, the turbines of which are fed by exhaust gas from the internal combustion engine, the exhaust gas initially being distributed to the first turbine and as the quantities of exhaust gas increase, by way of a reversing valve also to the second turbine as a function of parameters of the internal combustion engine. In order to improve the efficiency of the exhaust turbochargers and for a more rapid response of the internal combustion engine two exhaust valves are provided for each cylinder, which valves are each connected to a turbine of the respective exhaust turbochargers by way of separate ducts and lines.

Description

5050

Die Erfindung betrifft eine Viertakt-Brennkraftmaschine mit zwei Abgasturboladern gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a four-stroke internal combustion engine with two exhaust gas turbochargers according to the preamble of claim 1.

Zur Verbesserung des Ansprechverhaltens aufgeladener Brennkraftmaschinen, insbesondere von Otto-Motoren, ist es z. B. aus der DE-OS 28 18 447 bekannt, zwei Abgasturbolader zu verwenden und den einen, hinsichtlich seiner Förderleistung kleineren Abgasturbolader im unteren Drehzahl- und/oder Lastbereich der Brennkraftmaschine mit dem gesamten Abgas zu versorgen. Dadurch arbeitet dieser bereits bei geringeren Abgasmengen mit einem relativ guten Wirkungsgrad.To improve the response behavior of supercharged internal combustion engines, especially Otto engines, is it z. B. from DE-OS 28 18 447 known to use two exhaust gas turbochargers and the one with respect to its delivery rate smaller exhaust gas turbocharger in the lower speed and / or load range of the To supply internal combustion engine with the entire exhaust gas. As a result, it already works with lower ones Exhaust gas quantities with a relatively good efficiency.

Bei weiter ansteigender Abgasmenge wird dann der zweite Abgasturbolader dazu geschaltet, wobei das entsprechende Umsteuerventil abhängig von Motorparametern wie Drehzahl, Last, Ladedruck, Abgasgegendruck etc. gesteuert ist.If the amount of exhaust gas continues to increase, the second exhaust gas turbocharger is then switched on, with the corresponding Reversing valve depending on engine parameters such as speed, load, boost pressure, exhaust back pressure etc. is controlled.

Aufgabe der Erfindung ist es, bei einer Brennkraftmaschine mit zwei Abgasturboladern den Wirkungsgrad der Abgasturbolader und damit das Ansprechverhalten der Brennkraftmaschine weiter zu verbessern.The object of the invention is to improve the efficiency of an internal combustion engine with two exhaust gas turbochargers to further improve the exhaust gas turbocharger and thus the response behavior of the internal combustion engine.

Diese Aufgabe wird mit den Merkmalen des Patentanspruches 1 gelöst.This object is achieved with the features of claim 1.

Im Gegensatz zu den vorbekannten Brennkraftmaschinen wird bei der erfindungsgemäßen Lösung jeder Abgasturbolader bzw. dessen Turbine über vom Brennraum der Brennkraftmaschine ausgehende, separate Kanäle und Abgasleitungen mit Abgas versorgt. Diese Maßnahme ermöglicht eine optimale Anpassung der beiden Abgasturbolader an die Brennkraftmaschine, weil die Kanäle und Abgasleitungen hinsichtlich ihrer Länge, ihrer Querschnitte und ihrer übrigen Gestaltung und Anordnung zur jeweiligen Abgasturbine speziell abgestimmt und ausgelegt werden können. Beispielsweise können die Kanäle und Abgasleitungen zum kleinen Abgasturbolader so ausgelegt werden, daß hohe Strömungsgeschwindigkeiten des Abgases sichergestellt und bei niedrigen Drehzahlen eine Stoßaufladung erzielt wird. Desgleichen können die Abgaskanäle und -leitungen zur sekundären Abgasturbine auf hohe Abgasmengen bei mit voller Leistung arbeitender Brennkraftmaschine ausgelegt und gestaltet sein; gegebenenfalls kann in diesen Abgasleitungen auch ein Bypassventil zur Absenkung eines zu hohen Ladedruckes auf der Verdichterseite eingeschaltet sein.In contrast to the previously known internal combustion engines in the solution according to the invention, each exhaust gas turbocharger or its turbine is removed from the combustion chamber the internal combustion engine outgoing, separate channels and exhaust pipes are supplied with exhaust gas. These Measure enables optimal adaptation of the two exhaust gas turbochargers to the internal combustion engine, because the ducts and exhaust pipes in terms of their length, their cross-sections and their other design and arrangement can be specially adapted and designed for the respective exhaust gas turbine. For example the ducts and exhaust lines to the small exhaust gas turbocharger can be designed so that high Guaranteed flow speeds of the exhaust gas and shock charging at low speeds is achieved. Likewise, the exhaust gas ducts and lines to the secondary exhaust gas turbine can handle large amounts of exhaust gas be designed and designed with the internal combustion engine operating at full power; possibly A bypass valve can also be installed in these exhaust pipes to reduce excessively high boost pressure on the On the compressor side.

Zweckmäßige Weiterbildungen der Erfindung sind den Patentansprüchen 2 bis 5 entnehmbar. So wird durch die Merkmale des Patentanspruches 2 insbesondere eine wirkungsvolle Stoßaufladung bei niedrigen Drehzahlen der Brennkraftmaschine erreicht. Im Rahmen der brennraumseitigen Einbauverhältnisse können auch die Auslaßventile der Brennkraftmaschine gemäß Patentanspruch 3 mit in die Anpassung der Abgasturbolader mit einbezogen werden, wodurch eine gleichmäßige Beaufschlagung der Turbinen insbesondere bei einer hohen Leistungsabgabe der Brennkraftmaschine sichergestellt ist.Expedient developments of the invention can be found in claims 2 to 5. So will due to the features of claim 2, in particular, effective shock charging at low levels Speeds of the internal combustion engine reached. Within the scope of the installation conditions on the combustion chamber side, also the exhaust valves of the internal combustion engine according to claim 3 with the adaptation of the exhaust gas turbocharger be included, whereby a uniform loading of the turbines especially with a high power output of the internal combustion engine is ensured.

Das Umsteuerventil kann entsprechend den Merkmalen des Patentanspruches 4 ein Absperrventil sein, welches stromab der zweiten Abgasturbine in der Abgasleitung vorgesehen ist. Durch die Vorlagerung von unter Druck stehendem Abgas stromauf des Absperrvenfiles wird ein schnelleres, verzögerungsfreies Ansprechen des Abgasturboladers erzielt.The reversing valve can be a shut-off valve according to the features of claim 4, which is provided downstream of the second exhaust gas turbine in the exhaust line. By pre-storing under Exhaust gas under pressure upstream of the shut-off valve will respond more quickly and without delay of the exhaust gas turbocharger achieved.

Alternativ zum Absperrventil oder zusätzlich dazu können die mit dem zweiten Abgasturbolader korrespondierenden Auslaßventile stillegbar und/oder hubveränderlich gesteuert sein. Derartige abschaltbare und/oder hubveränderliche Ventilsteuervorrichtungen sind beispielsweise den deutschen Patentanmeldungen P 30 42 018.9 und P 30 06 619.4 entnehmbar. Die die Ventilsteuerung beeinflussenden Parameter können die Drehzahl und die Last der Brennkraftmaschine sowie der Ladedruck im Saugrohr oder der Abgasgegendruck in den Abgasleitungen zum ersten Abgasturbolader sein.As an alternative to the shut-off valve or in addition to it, the ones corresponding to the second exhaust gas turbocharger can be used Exhaust valves can be shut down and / or controlled so as to be variable in stroke. Such disconnectable and / or variable stroke valve control devices are, for example, the German patent applications P 30 42 018.9 and P 30 06 619.4 can be found. The parameters influencing the valve control can Speed and the load of the internal combustion engine as well as the boost pressure in the intake manifold or the exhaust gas back pressure be in the exhaust pipes to the first exhaust gas turbocharger.

Durch die Merkmale des Patentanspruches 6 kann bei niedriger Last der Brennkraftmaschine eine Verbrauchseinsparung erzielt werden.The features of claim 6 can save fuel consumption at a low load of the internal combustion engine be achieved.

Ein Ausführungsbeispiel der Erfindung ist im folgenden mit weiteren Einzelheiten näher erläutert. Die schematische Zeichnung zeigt eine erfindungsgemäße Brennkraftmaschine mit zwei separat mit Abgas versorgten Abgasturboladern.An embodiment of the invention is explained in more detail below with further details. The schematic Drawing shows an internal combustion engine according to the invention with two separately supplied with exhaust gas Exhaust gas turbochargers.

Eine Viertakt-Hubkolben-Brennkraftmaschine 2 der Otto-Bauart weist in nicht näher dargestellter Weise jeA four-stroke reciprocating internal combustion engine 2 of the Otto type has each in a manner not shown

33

Zylinder zwei Einlaßventile 4,6 und zwei Auslaßventile druck einen vorbestimmten, höchsten Wert, so wird 8,10 auf. Durch diese Ventile wird in bekannter Weise über das Steuergerät 68 das Bypassventil 66 geöffnet, so der Gaswechsel in der Brennkraftmaschine gesteuert. daß Abgas von stromauf der Abgasturbine 46 aus der Die Einlaßventile 4,6 sind über entsprechende Kanäle in Abgasleitung 42 in die Sammelleitung 34 abgeblasen der Brennkraftmaschine mit einem Sammelsaugrohr 12 5 wird.Cylinder two intake valves 4,6 and two exhaust valves pressure a predetermined, highest value, so will 8.10 on. By means of these valves, the bypass valve 66 is opened in a known manner via the control unit 68, see above the gas exchange in the internal combustion engine is controlled. that exhaust gas from upstream of the exhaust gas turbine 46 from the The inlet valves 4, 6 are blown off into the collecting line 34 via corresponding channels in the exhaust line 42 of the internal combustion engine with a manifold intake manifold 12 5.

und einer Ansaugleitung 14 verbunden. In der Ansaug- Anstelle der Absperrklappe 60 kann auch eine Ventilleitung 14 ist ein willkürlich betätigbares Drosselele- steuerung vorgesehen werden, bei der im unteren Drehment bzw. eine Drosselklappe 16 drehbar gelagert, mit zahl- und Lastbereich der Brennkraftmaschine 2 die welcher der Ansaugquerschnitt steuerbar ist. Auslaßventile zunächst stillgesetzt und beim gleitendenand a suction pipe 14 connected. Instead of the butterfly valve 60, a valve line can also be used in the intake 14 an arbitrarily actuatable throttle control can be provided, in the case of which in the lower rotary element or a throttle valve 16 rotatably mounted, with the number and load range of the internal combustion engine 2 which the suction cross-section is controllable. Exhaust valves initially shut down and when sliding

Die bezüglich ihres Ausströmquerschnittes kleineren 10 Zuschalten des zweiten Abgasturboladers 48 mit zuAuslaßventile 8 münden in brennkraftmaschinenseitige nächst geringerem Hub und später mit vollem Ventil-Auslaßkanäle 18, welche wiederum über separate Aus- hub zugeschaltet werden. Derartige Ventilsteuerungslaßleitungen 20,22,24,26 mit der Abgasturbine 28 eines vorrichtungen sind — wie eingangs bereits angeführt ersten Abgasturboladers 30 verbunden sind. Die separa- — bekannt.The connection of the second exhaust gas turbocharger 48 with the exhaust valves, which are smaller with regard to their outflow cross-section 8 open into the next lower stroke on the internal combustion engine side and later with full valve outlet channels 18, which in turn are switched on via a separate lift. Such valve control outlet lines 20,22,24,26 with the exhaust gas turbine 28 of a device are - as already mentioned first exhaust gas turbocharger 30 are connected. The separa- - known.

ten Abgasleitungen 20,22,24,26 münden jeweils unver- 15 Bei niedriger Last der Brennkraftmaschine und demzweigt in das Spiralgehäuse 32 der Abgasturbine. Von entsprechend nahezu geschlossener Drosselklappe dieser wird das Abgas über eine Sammelleitung 34 in können gegebenenfalls durch entsprechende Programnicht näher dargestellter Weise in die Atmosphäre ab- mierung des Steuergerätes 68 die Absperrklappe 60 und geführt. Die Abgasturbine 28 treibt einen ersten Ver- das Bypassventil 60 geöffnet werden, um den Abgasgedichter 36 an, der in die Ansaugleitung 14 hineinfördert. 20 gendruck zu verringern. Dadurch kann der Maschinen-Ferner sind die Auslaßventile 10 über brennkraftma- wirkungsgrad bei niedriger Last angehoben werden. Soschinenseitige Auslaßkanäle 38 mit einem Abgassamm- bald die Drosselklappe 16 weiter geöffnet wird, überler 40 verbunden, dessen Abgasleitung 42 in das Spiral- wiegt jedoch wie bereits beschrieben die ladedruckabgehäuse 44 mit einer Abgasturbine 46 eines zweiten hängige Steuerung.th exhaust lines 20,22,24,26 each open un- 15 With a low load of the internal combustion engine and the branch into the volute casing 32 of the exhaust gas turbine. From a correspondingly almost closed throttle valve this is the exhaust gas via a manifold 34 in may not be possible through corresponding programs In the manner shown in more detail, the shut-off valve 60 and the shut-off valve 60 are reduced into the atmosphere by the control device 68 guided. The exhaust gas turbine 28 drives a first mode, the bypass valve 60 being opened to the exhaust gas seal 36, which feeds into the suction line 14. 20 to reduce back pressure. This enables the machine operator If the exhaust valves 10 are raised above combustion efficiency at low loads. Soschin side Outlet ducts 38 with an exhaust manifold soon the throttle valve 16 is opened further, überler 40 connected, the exhaust line 42 of which weighs into the spiral, however, as already described, the boost pressure housing 44 with an exhaust gas turbine 46 of a second pending control.

Abgasturboladers 48 einmündet. Die Abgasturbine 46 25 Exhaust gas turbocharger 48 opens. The exhaust turbine 46 25

treibt einen zweiten Verdichter 50 an, an dem eine An- Hierzu 1 Blatt Zeichnungendrives a second compressor 50 on which a connection to this 1 sheet of drawings

saugluftleitung 52 mit einem Luftfilter 54 angeschlossen ist. Eine Förderleitung 56 verbindet die Druckseite des Verdichters 50 mit der Saugseite des ersten Verdichters 36.suction air line 52 connected to an air filter 54 is. A delivery line 56 connects the pressure side of the compressor 50 with the suction side of the first compressor 36.

In der von der zweiten Abgasturbine 46 abgehenden Abgasleitung 58 ist ein Absperrventil bzw. eine Absperrklappe 60 angeordnet, welche mittels eines elektrischen Stellmotores 62 betätigbar ist. Ferner ist an die Abgasleitung 42 eine Bypassleitung 64 mit einem Bypassventil 66 angeschlossen, welche bei geöffnetem Bypassventil 66 Abgas unter Umgehung der Abgasturbine 46 aus der Abgasleitung 42 in die Sammelleitung 34 abströmen läßt.A shut-off valve or a shut-off flap is located in the exhaust gas line 58 extending from the second exhaust gas turbine 46 60 arranged, which can be actuated by means of an electric servomotor 62. Furthermore, the Exhaust line 42 is connected to a bypass line 64 with a bypass valve 66, which when the bypass valve is open 66 Exhaust gas bypassing the exhaust gas turbine 46 from the exhaust gas line 42 into the collecting line 34 can flow away.

Der Stellmotor 62 und das Bypassventil 66 sind von einem Steuergerät 68 gesteuert, in welches die Parameter Ladedruck stromauf der Drosselklappe 16 in der Ansaugleitung 14, Abgasgegendruck in einer der Abgasleitungen 20,22,24,26 sowie Drehzahl und Last der Brennkraftmaschine ständig eingegeben sind und welches abhängig von diesen Parametern nach einem vorgegebenen Kennfeld die Absperrklappe 60 und das Bypass- Ventil 66 ansteuert.The servomotor 62 and the bypass valve 66 are controlled by a control unit 68, in which the parameters Boost pressure upstream of the throttle valve 16 in the intake line 14, exhaust gas back pressure in one of the exhaust lines 20,22,24,26 as well as speed and load of the Internal combustion engine are constantly entered and which depends on these parameters according to a predetermined Characteristic map controls the shut-off valve 60 and the bypass valve 66.

Im unteren Drehzahlbereich der Brennkraftmaschine bei allen Lastzuständen sowie im oberen Drehzahlbereich bei stark verminderter Last ist die Absperrklappe 60 mittels des Stellmotores 62 geschlossen, so daß lediglich der hinsichtlich seines Schluckvermögens bzw. seiner Förderleistung kleinere erste Abgasturbolader 30 in Betrieb ist. Dabei fördert dessen Verdichter 36 die Verbrennungsluft durch den Verdichter 50 des zweiten Abgasturboladers 48 hindurch.In the lower speed range of the internal combustion engine under all load conditions and in the upper speed range when the load is greatly reduced, the shut-off valve 60 is closed by means of the servomotor 62, so that only the first exhaust gas turbocharger 30 in Operation is. Its compressor 36 promotes the combustion air through the compressor 50 of the second exhaust gas turbocharger 48.

Bei Erreichen eines vorbestimmten Ladedruckes stromauf der Drosselklappe 16 in der Ansaugleitung 14, einem vorbestimmten Abgasgegendruck in der Abgasleitung 20 und gegebenenfalls einer vorbestimmten Drehzahlschwelle der Brennkraftmaschine 2 wird zunehmend die Absperrklappe 60 geöffnet, um im gleitenden Einsatz dessen Abgasturbolader 48 in Betrieb zu setzen. Aufgrund der stromab der Abgasturbine 46 sitzenden Absperrklappe 60 geschieht dies aufgrund des vorgelagerten Abgasdruckes ohne Verzögerung. Übersteigt der Abgasgegendruck oder der Lade-When a predetermined boost pressure is reached upstream of the throttle valve 16 in the intake line 14, a predetermined exhaust gas back pressure in the exhaust line 20 and possibly a predetermined one Speed threshold of the internal combustion engine 2, the butterfly valve 60 is increasingly opened in order to slide Use to put the exhaust gas turbocharger 48 into operation. Because of the seated downstream of the exhaust gas turbine 46 Butterfly valve 60 does this without delay due to the upstream exhaust gas pressure. If the exhaust back pressure or the charging

- Leerseite -- blank page -

Claims (6)

Patentansprüche:Patent claims: 1. Viertakt-Brennkraftmaschine mit zwei Abgasturboladern, deren Abgasturbinen vom Abgas der Brennkraftmaschine gespeist werden, wobei abhängig von Parametern der Brennkraftmaschine das Abgas zunächst auf die erste Abgasturbine und bei größeren Abgasmengen über ein Umsteuerventil auch auf die zweite Abgasturbine verteilt sind, dadurch gekennzeichnet, daß die Brennkraftmaschine (2) je Zylinder zwei Auslaßventile (8, 10) aufweist, welche über von einander getrennte Kanäle (18,38) und Abgasleitungen (20,22,24,26 bzw. 40, 42) mit je einer Abgasturbine (28,46) der Abgasturbolader (30,48) verbunden sind.1. Four-stroke internal combustion engine with two exhaust gas turbochargers, the exhaust gas turbines of the exhaust gas Internal combustion engine are fed, depending on the parameters of the internal combustion engine Exhaust gas initially to the first exhaust gas turbine and, in the case of larger amounts of exhaust gas, via a reversing valve are also distributed to the second exhaust gas turbine, characterized in that the internal combustion engine (2) has two exhaust valves (8, 10) per cylinder, which have separate channels (18,38) and exhaust pipes (20,22,24,26 or 40, 42) are each connected to an exhaust gas turbine (28, 46) of the exhaust gas turbocharger (30, 48). 2. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Abgasleitungen (20, 22, 24, 26) zum ersten Abgasturbolader (30) bis zu deren Eintritt in das Abgasturbinengehäuse (32) separat verlaufen.2. Internal combustion engine according to claim 1, characterized in that the exhaust pipes (20, 22, 24, 26) to the first exhaust gas turbocharger (30) up to its entry into the exhaust gas turbine housing (32) separately get lost. 3. Brennkraftmaschine nach Anspruch 1, wobei die beiden Abgasturbolader (30, 48) hinsichtlich ihrer Förderleistung unterschiedlich groß sind, dadurch gekennzeichnet, daß die beiden Auslaßventile (8,10) der Brennkraftmaschine (2) ebenfalls unterschiedlich groß sind, wobei das jeweils kleinere Auslaßventil (8) mit dem kleineren, im unteren Drehzahlbereich der Brennkraftmaschine mit Abgas versorgten Abgasturbolader (30) korrespondiert.3. Internal combustion engine according to claim 1, wherein the two exhaust gas turbochargers (30, 48) with regard to their Delivery rates are different, characterized in that the two outlet valves (8,10) the internal combustion engine (2) are also of different sizes, the smaller exhaust valve (8) with the smaller exhaust gas turbocharger, which is supplied with exhaust gas in the lower speed range of the internal combustion engine (30) corresponds. 4. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Umsteuerventil ein Absperrventil (60) ist, welches in der Abgasleitung (58) stromab der zweiten Abgasturbine (46) angeordnet ist.4. Internal combustion engine according to claim 1, characterized in that the reversing valve is a shut-off valve (60), which is arranged in the exhaust line (58) downstream of the second exhaust gas turbine (46) is. 5. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die mit der zweiten Abgasturbine (46) korrespondierenden Auslaßventile (10) der Brennkraftmaschine (2) stillegbar und/oder hubveränderlich steuerbar sind.5. Internal combustion engine according to claim 1, characterized in that with the second exhaust gas turbine (46) corresponding outlet valves (10) of the internal combustion engine (2) can be shut down and / or the stroke can be varied are controllable. 6. Brennkraftmaschine nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei niedriger Last beide Auslaßventile (8,10) je Zylinder voll aufgesteuert werden und daß gegebenenfalls das Absperrventil (60) und/oder ein Bypassventil (66) geöffnet sind.6. Internal combustion engine according to one or more of the preceding claims, characterized in that that at low load both exhaust valves (8,10) per cylinder are fully opened and that if necessary, the shut-off valve (60) and / or a bypass valve (66) are open.
DE3439999A 1984-11-02 1984-11-02 Four-stroke internal combustion engine with two exhaust turbochargers Expired DE3439999C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3439999A DE3439999C1 (en) 1984-11-02 1984-11-02 Four-stroke internal combustion engine with two exhaust turbochargers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3439999A DE3439999C1 (en) 1984-11-02 1984-11-02 Four-stroke internal combustion engine with two exhaust turbochargers

Publications (1)

Publication Number Publication Date
DE3439999C1 true DE3439999C1 (en) 1986-05-15

Family

ID=6249275

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3439999A Expired DE3439999C1 (en) 1984-11-02 1984-11-02 Four-stroke internal combustion engine with two exhaust turbochargers

Country Status (1)

Country Link
DE (1) DE3439999C1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821937A1 (en) * 1988-06-29 1990-02-08 Audi Ag Internal combustion engine with valve timing gear
DE3821935A1 (en) * 1988-06-29 1990-02-08 Audi Ag Internal combustion engine with valve timing gear
FR2916226A3 (en) * 2007-05-18 2008-11-21 Renault Sas Variable exhaust gas distribution system for supercharged internal combustion engine of motor vehicle, has control units controlling valves and manifolds with pipes connected to inlets of turbines, where dimension of one manifold is reduced
DE102009060339A1 (en) 2009-12-16 2011-06-22 Dr. Ing. h.c. F. Porsche Aktiengesellschaft, 70435 Spark-ignited and supercharged internal-combustion engine, has primary turbocharger operable with higher gas quantity than that of secondary turbocharger that is switched on at higher speed depending on operating point of engine
EP2647808A1 (en) * 2012-04-05 2013-10-09 Universität Stuttgart Exhaust gas tract for an internal combustion engine
GB2514789A (en) * 2013-06-04 2014-12-10 Jaguar Land Rover Ltd Exhaust turbocharger
EP2119888A3 (en) * 2008-05-15 2016-04-06 Honeywell International Inc. Parallel sequential turbocharger architecture using engine cylinder variable valve lift system
US20160290220A1 (en) * 2015-03-31 2016-10-06 Ford Global Technologies, Llc Exhaust-gas-turbocharged internal combustion engine having at least two turbines and switchable outlet openings, and method for operating an internal combustion engine of said type
DE102004028482B4 (en) * 2004-06-11 2018-01-04 Volkswagen Ag Internal combustion engine
US9874161B2 (en) 2014-05-09 2018-01-23 Ford Global Technologies, Llc Exhaust-gas-turbocharged applied-ignition internal combustion engine having at least two turbines, and method for operating an internal combustion engine of said type
DE102016120815A1 (en) * 2016-11-02 2018-05-03 Volkswagen Aktiengesellschaft Internal combustion engine
EP3483407A1 (en) * 2017-11-14 2019-05-15 Bayerische Motoren Werke Aktiengesellschaft Combustion engine and method for operating the combustion engine
EP3889407A1 (en) * 2020-04-01 2021-10-06 Mazda Motor Corporation Boosted engine and vehicle comprising a boosted engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818447A1 (en) * 1978-04-27 1979-11-08 Porsche Ag Two=stage turbocharger for IC engine - has turbines in parallel and compressors in series for independent operation
DE3006619A1 (en) * 1980-02-22 1981-08-27 Audi Nsu Auto Union Ag, 7107 Neckarsulm Control mechanism for inlet valve to IC engine combustion chamber - has rocker arm acted on by two rotating cams with relatively adjustable angular positions
DE3042018A1 (en) * 1980-11-07 1982-05-19 Audi Nsu Auto Union Ag, 7107 Neckarsulm Multicylinder IC engine valve gear - includes mechanism for cutting cylinders out with cam units which slide-fit on shaft, with uncoupled driver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818447A1 (en) * 1978-04-27 1979-11-08 Porsche Ag Two=stage turbocharger for IC engine - has turbines in parallel and compressors in series for independent operation
DE3006619A1 (en) * 1980-02-22 1981-08-27 Audi Nsu Auto Union Ag, 7107 Neckarsulm Control mechanism for inlet valve to IC engine combustion chamber - has rocker arm acted on by two rotating cams with relatively adjustable angular positions
DE3042018A1 (en) * 1980-11-07 1982-05-19 Audi Nsu Auto Union Ag, 7107 Neckarsulm Multicylinder IC engine valve gear - includes mechanism for cutting cylinders out with cam units which slide-fit on shaft, with uncoupled driver

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821935A1 (en) * 1988-06-29 1990-02-08 Audi Ag Internal combustion engine with valve timing gear
DE3821937A1 (en) * 1988-06-29 1990-02-08 Audi Ag Internal combustion engine with valve timing gear
DE102004028482B4 (en) * 2004-06-11 2018-01-04 Volkswagen Ag Internal combustion engine
FR2916226A3 (en) * 2007-05-18 2008-11-21 Renault Sas Variable exhaust gas distribution system for supercharged internal combustion engine of motor vehicle, has control units controlling valves and manifolds with pipes connected to inlets of turbines, where dimension of one manifold is reduced
EP2119888A3 (en) * 2008-05-15 2016-04-06 Honeywell International Inc. Parallel sequential turbocharger architecture using engine cylinder variable valve lift system
DE102009060339A1 (en) 2009-12-16 2011-06-22 Dr. Ing. h.c. F. Porsche Aktiengesellschaft, 70435 Spark-ignited and supercharged internal-combustion engine, has primary turbocharger operable with higher gas quantity than that of secondary turbocharger that is switched on at higher speed depending on operating point of engine
EP2647808A1 (en) * 2012-04-05 2013-10-09 Universität Stuttgart Exhaust gas tract for an internal combustion engine
US9267418B2 (en) 2012-04-05 2016-02-23 Universitaet Stuttgart Exhaust gas system for an internal combustion engine
WO2013150092A1 (en) * 2012-04-05 2013-10-10 Universität Stuttgart Exhaust gas system for an internal combustion engine
GB2514789A (en) * 2013-06-04 2014-12-10 Jaguar Land Rover Ltd Exhaust turbocharger
GB2514789B (en) * 2013-06-04 2017-03-29 Jaguar Land Rover Ltd Exhaust turbocharger having different turbine geometries for separate exhaust streams
US9874161B2 (en) 2014-05-09 2018-01-23 Ford Global Technologies, Llc Exhaust-gas-turbocharged applied-ignition internal combustion engine having at least two turbines, and method for operating an internal combustion engine of said type
US20160290220A1 (en) * 2015-03-31 2016-10-06 Ford Global Technologies, Llc Exhaust-gas-turbocharged internal combustion engine having at least two turbines and switchable outlet openings, and method for operating an internal combustion engine of said type
US9896991B2 (en) * 2015-03-31 2018-02-20 Ford Global Technologies, Llc Exhaust-gas-turbocharged internal combustion engine having at least two turbines and switchable outlet openings, and method for operating an internal combustion engine of said type
DE102016120815A1 (en) * 2016-11-02 2018-05-03 Volkswagen Aktiengesellschaft Internal combustion engine
DE102016120815B4 (en) 2016-11-02 2024-03-07 Volkswagen Aktiengesellschaft Internal combustion engine
EP3483407A1 (en) * 2017-11-14 2019-05-15 Bayerische Motoren Werke Aktiengesellschaft Combustion engine and method for operating the combustion engine
EP3889407A1 (en) * 2020-04-01 2021-10-06 Mazda Motor Corporation Boosted engine and vehicle comprising a boosted engine

Similar Documents

Publication Publication Date Title
EP1766209B1 (en) Internal combustion engine comprising an exhaust gas turbocharger
AT510236B1 (en) METHOD FOR MOTOR BRAKING
DE4416572C1 (en) Turbocharged internal combustion engine
EP2097620B1 (en) Crank case ventilator
DE3203952C2 (en) Internal combustion engine with a supercharging compressor
DE4016214C1 (en)
DE2911727A1 (en) PISTON COMBUSTION ENGINE WITH AT LEAST TWO EXHAUST GAS TURBOCHARGERS
DE2738929B2 (en) Pressure-controlled exhaust gas bypass valve for exhaust gas-charged internal combustion engines
DE3420015A1 (en) MULTI-CYLINDER INTERNAL COMBUSTION ENGINE WITH TWO EXHAUST TURBOCHARGERS
EP2151569B1 (en) Device for removing a waste gas partial stream and combustion engine with this device
DE102004039927A1 (en) Internal combustion engine with an exhaust gas turbocharger and an exhaust gas recirculation device
DE3439999C1 (en) Four-stroke internal combustion engine with two exhaust turbochargers
DE4120057C2 (en) Multi-cylinder internal combustion engine with two turbochargers
EP0735253A2 (en) Method and device for register supercharging an internal combustion engine
WO2006119866A1 (en) Internal combustion engine with exhaust gas turbocharger and exhaust gas recirculation
DE102008048681A1 (en) Internal combustion engine with two loaders and method for operating the same
DE4027503A1 (en) CHARGE PRESSURE CONTROL DEVICE FOR A TURBOCHARGER ENGINE
DE10235013B4 (en) Method for determining a boost pressure setpoint in an internal combustion engine with an exhaust gas turbocharger
DE3005321A1 (en) TURBOCHARGER
EP0022584B1 (en) Bypass control device for turbo-supercharged internal-combustion engines
DE4235794C1 (en) Exhaust gas feedback for IC engine - has feedback conduit connecting exhaust gas conduit before turbine with charging air conduit after compressor
DE19816840C2 (en) Internal combustion engine with several exhaust gas turbochargers that can be optionally switched on and off
DE10132672A1 (en) Exhaust gas turbocharger for internal combustion engine enables different flow rates through exhaust gas openings to be set by altering valve body position
DE19961610A1 (en) Internal combustion engine with two exhaust gas turbochargers for motor vehicle, has control unit that increases/decreases variable geometry turbine cross-section for high/low engine speed
DE19826355A1 (en) Arrangement for controlling an exhaust gas turbocharger turbine of an internal combustion engine

Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8330 Complete disclaimer