DE102010006309A1 - Combustion engine i.e. diesel engine, for passenger car, has supercharger comprising two compressor stages and turbine stage, where one of compressor stages is connected with exhaust system downstream to turbine stage - Google Patents

Combustion engine i.e. diesel engine, for passenger car, has supercharger comprising two compressor stages and turbine stage, where one of compressor stages is connected with exhaust system downstream to turbine stage Download PDF

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DE102010006309A1
DE102010006309A1 DE102010006309A DE102010006309A DE102010006309A1 DE 102010006309 A1 DE102010006309 A1 DE 102010006309A1 DE 102010006309 A DE102010006309 A DE 102010006309A DE 102010006309 A DE102010006309 A DE 102010006309A DE 102010006309 A1 DE102010006309 A1 DE 102010006309A1
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combustion engine
internal combustion
exhaust system
compressor
compressor stages
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DE102010006309A
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German (de)
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Michael 75233 Baum
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • 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
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • 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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/10—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of charging or scavenging apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/12—Turbo charger
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10157—Supercharged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Supercharger (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The engine (1) has a supercharger (2) integrated into a cylinder head (7) and comprising two compressor stages (5, 6) and a turbine stage (3). An exhaust system (22) stands in flow connection with the turbine stage, and one of the compressor stages is connected with the exhaust system downstream to the turbine stage. The exhaust system comprises a catalytic converter (25), and the cylinder head comprises a refrigerant circuit for cooling the supercharger and a coolant pump for conveying coolant. A supplementary electrical coolant pump increases coolant throughput in the cylinder head.

Description

Die Erfindung betrifft eine Brennkraftmaschine mit einem Abgasturbolader, der in einen Zylinderkopf der Brennkraftmaschine integriert ist, wobei der Abgasturbolader mehrere Verdichterstufen und mindestens eine Turbinenstufe aufweist, sowie mit einer in Strömungsverbindung mit der Turbinenstufe stehenden Abgasanlage.The invention relates to an internal combustion engine having an exhaust gas turbocharger, which is integrated in a cylinder head of the internal combustion engine, wherein the exhaust gas turbocharger has a plurality of compressor stages and at least one turbine stage, as well as with an exhaust system in fluid communication with the turbine stage.

Bei modernen Kraftfahrzeugen besteht der Bedarf, den im Motorraum vorhandene Platz effektiv zu nutzen. Dies ist mitunter bei dem Einsatz eines Abgasturboladers erschwert. Der Freiheitsgrad bei der Auslegung und dem Design des Abgasturboladers, und dabei insbesondere dessen Frischluft- und Abgaskanälen, ist begrenzt. Dies liegt unter anderem an der Kopplung zwischen Verdichter und Turbine. Die Integration des Abgasturboladers in den Zylinderkopf der Brennkraftmaschine ermöglicht eine platzsparende Anordnung der Brennkraftmaschine im Motorraum.In modern motor vehicles, there is a need to effectively use the space available in the engine compartment. This is sometimes difficult with the use of an exhaust gas turbocharger. The degree of freedom in the design and the design of the exhaust gas turbocharger, and in particular its fresh air and exhaust ducts, is limited. This is partly due to the coupling between compressor and turbine. The integration of the exhaust gas turbocharger in the cylinder head of the internal combustion engine allows a space-saving arrangement of the internal combustion engine in the engine compartment.

Eine Brennkraftmaschine der eingangs genannten Art ist aus der DE 10 2007 017 854 A1 bekannt. Bei dieser ist die Abgasanlage mit einem Katalysator versehen. Durch die Abgasanlage wird ausschließlich Abgas der Brennkraftmaschine geleitet.An internal combustion engine of the type mentioned is from the DE 10 2007 017 854 A1 known. In this, the exhaust system is provided with a catalyst. Through the exhaust system exclusively exhaust gas of the internal combustion engine is passed.

Aufgabe der vorliegenden Erfindung ist es, eine Brennkraftmaschine der eingangs genannten Art so weiterzubilden, dass bei dieser das Abgas nachoxidiert werden kann.Object of the present invention is to develop an internal combustion engine of the type mentioned so that in this the exhaust gas can be post-oxidized.

Gelöst wird die Aufgabe dadurch, dass mindestens eine Verdichterstufe stromabwärts der Turbinenstufe mit der Abgasanlage verbunden ist.The object is achieved in that at least one compressor stage is connected downstream of the turbine stage with the exhaust system.

Mittels der mindestens einen Verdichterstufe erfolgt die Sauerstoffanreicherung, somit nach Oxidation des Abgases. Über diese mindestens eine Verdichterstufe wird Frischluft der Abgasanlage zugeführt, so dass zusätzliche Ladeluft zur Oxidation des Abgasstroms zur Verfügung steht.By means of the at least one compressor stage, the oxygen enrichment takes place, thus after oxidation of the exhaust gas. Fresh air is supplied to the exhaust system via this at least one compressor stage, so that additional charge air is available for the oxidation of the exhaust gas flow.

Bei einer derartig gestalteten Brennkraftmaschine ist mit hohem Wirkungsgrad eine Nachoxidation des Abgases möglich.In such a designed engine, a post-oxidation of the exhaust gas is possible with high efficiency.

Insbesondere weist die Abgasanlage einen Katalysator auf und es ist die Verdichterstufe stromaufwärts des Katalysators oder im Bereich des Katalysators mit der Abgasanlage verbunden. Infolge der Nachoxidation freigesetzte Wärme heizt den Katalysator zusätzlich auf, mit der Konsequenz, dass der Katalysator in kurzer Zeit auch seine Betriebstemperatur erreicht.In particular, the exhaust system has a catalytic converter and the compressor stage is connected upstream of the catalytic converter or in the region of the catalytic converter with the exhaust system. As a result of the post-oxidation liberated heat heats the catalyst in addition, with the consequence that the catalyst also reaches its operating temperature in a short time.

Der Abgasturbolader weist somit vorzugsweise mindestens zwei Verdichterstufen auf, wobei mindestens eine Verdichterstufe die Zylinder der Brennkraftmaschine mit Frischluft versorgt und eine Verdichterstufe Frischluft unmittelbar der Abgasanlage zuführt. Insbesondere sind bis zu drei Verdichterstufen vorgesehen.The exhaust gas turbocharger thus preferably has at least two compressor stages, wherein at least one compressor stage supplies the cylinders of the internal combustion engine with fresh air and a compressor stage directly supplies fresh air to the exhaust system. In particular, up to three compressor stages are provided.

Es können gleichfalls mehrere Turbinenstufen vorgesehen sein, insbesondere bis zu drei Turbinenstufen.It can also be provided several turbine stages, in particular up to three turbine stages.

Bei Verwendung mehrerer Verdichterstufen bzw. mehrerer Turbinenstufen sind die Verdichterstufen bzw. Turbinenstufen unterschiedlichen Zylindern bzw. unterschiedlichen Zylindergruppen der Brennkraftmaschinen zugeordnet.When using a plurality of compressor stages or several turbine stages, the compressor stages or turbine stages are assigned to different cylinders or different cylinder groups of the internal combustion engines.

Stromaufwärts der Verdichterstufen ist vorzugsweise ein allen Verdichterstufen gemeinsamer Luftfilter angeordnet oder aber es sind den jeweiligen Verdichterstufen separate Luftfilter zugeordnet.Upstream of the compressor stages, an air filter common to all compressor stages is preferably arranged or else separate air filters are assigned to the respective compressor stages.

Durch Integration des Abgasturboladers in den Zylinderkopf ist dieser in bestimmten Lastzuständen der Brennkraftmaschine thermisch besonders hoch belastet. Zur Optimierung der Kühlung ist deshalb nicht nur die übliche Kühlmittelpumpe zum Fördern des Kühlmittels im Bereich des Kühlmittelkreislaufs des Zylinderkopfes vorgesehen, sondern darüber hinaus eine zusätzliche elektrische Kühlmittelpumpe, mit der der Kühlmitteldurchsatz im Zylinderkopf bei Bedarf erhöht werden kann.By integration of the exhaust gas turbocharger in the cylinder head this is thermally particularly high load in certain load conditions of the internal combustion engine. Therefore, not only the usual coolant pump for conveying the coolant in the area of the coolant circuit of the cylinder head is provided to optimize the cooling, but also an additional electric coolant pump, with which the coolant flow in the cylinder head can be increased if necessary.

Die Erfindung ermöglicht es somit, mit Hilfe einer Verdichterstufe des Abgasturboladers die Umsetzung einer Sekundärluftfunktion vorzunehmen, so dass für die Abgasnachoxidation eine größere Frischluftmasse verfügbar ist.The invention thus makes it possible to carry out the implementation of a secondary air function with the aid of a compressor stage of the exhaust gas turbocharger, so that a larger fresh air mass is available for the post-oxidation of the exhaust gas.

Konstruktiv ist die Brennkraftmaschine insbesondere so gestaltet, dass ein Turbinen- und Verdichterrad von jeweiliger Turbinenstufe und jeweiliger Verdichterstufe direkt in den Zylinderkopf neben den Auslasskanälen des Zylinderkopfes eingebettet ist. Am Zylinderkopf befinden sich Gehäuseaufnahmen nebst Lagerstellen zur Aufnahme der jeweiligen Turbinen- und Verdichterstufe. Der Kühlmittelkreislauf/Kühlwasserkreislauf umspült das aufnehmende Gehäuse und die Lagerpunkte. Die Elektropumpe sorgt bei Bedarf für einen hohen Kühlmitteldurchsatz zur nötigen Turbinenkühlung und unterstützt somit bei Bedarf die standardgemäße Kühlmittelpumpe der Brennkraftmaschine. Sowohl das Verdichterrad als auch das Turbinenrad können ein-, zwei- oder dreistufig ausgelegt sein, je nach gewünschter Funktion.Structurally, the internal combustion engine is designed in particular so that a turbine and compressor wheel of each turbine stage and the respective compressor stage is embedded directly in the cylinder head next to the exhaust ports of the cylinder head. On the cylinder head housing receptacles are together with bearings for receiving the respective turbine and compressor stage. The coolant circuit / cooling water circuit flows around the receiving housing and the bearing points. If necessary, the electric pump ensures a high coolant throughput for the necessary turbine cooling and thus supports the standard coolant pump of the internal combustion engine if required. Both the compressor wheel and the turbine wheel can be designed in one, two or three stages, depending on the desired function.

Die erfindungsgemäße Brennkraftmaschine ermöglicht ein schnelles Erreichen der Motor-Betriebstemperatur. Es ist keine Zuheizung erforderlich. Die notwendige Luftmenge ist in allen Drehzahl- und Lastbereichen verfügbar. Die Abgasnachoxidation kann mit äußerst großer Luftmenge erfolgen. Insbesondere ist eine sehr hohe CO2-Reduzierung gewährleistet. Separate Sekundärluftgebläse sind somit nicht nötig. Hohe Arbeitstemperaturen und höhere Verbrennungstemperaturen sind im Besonderen bei Diesel-Motoren leicht erreichbar.The internal combustion engine according to the invention enables a rapid achievement of the engine operating temperature. There is no additional heating required. The necessary amount of air is available in all speed and load ranges. The Exhaust post-oxidation can be done with extremely large amount of air. In particular, a very high CO 2 reduction is guaranteed. Separate secondary air blowers are therefore not necessary. High operating temperatures and higher combustion temperatures are particularly easy to achieve with diesel engines.

Zwei bevorzugte Ausführungsbeispiele der Erfindung sind in der Zeichnung schematisch dargestellt und im Nachfolgenden näher beschrieben. Es zeigt:Two preferred embodiments of the invention are shown schematically in the drawing and described in more detail below. It shows:

1 eine Prinzipdarstellung einer ersten Ausführungsform, 1 a schematic diagram of a first embodiment,

2 eine Prinzipdarstellung einer zweiten Ausführungsform. 2 a schematic diagram of a second embodiment.

1 zeigt eine Brennkraftmaschine 1 mit Abgasturbolader 2, der eine Turbinenstufe 3 und zwei mittels einer Welle 4 der Turbinenstufe 3 angetriebene Verdichterstufen – erste Verdichterstufe 5 und zweite Verdichterstufe 6 – aufweist. 1 shows an internal combustion engine 1 with turbocharger 2 who has a turbine stage 3 and two by means of a wave 4 the turbine stage 3 driven compressor stages - first compressor stage 5 and second compressor stage 6 - having.

Die Brennkraftmaschine weist vier nicht näher veranschaulichte Zylinder auf. Der Zylinderkopf der Brennkraftmaschine 1 ist mit der Bezugsziffer 7 bezeichnet. Im Zylinderkopf 7 sind eine Einlassnockenwelle 8, eine Auslassnockenwelle 9 und jedem Zylinder zugeordnete Zündkerzen 10 und Ventile 11 zur Direkteinspritzung von Kraftstoff gelagert. Ein- und Auslassventile der Brennkraftmaschine 1 sind nicht veranschaulicht.The internal combustion engine has four unspecified cylinders. The cylinder head of the internal combustion engine 1 is with the reference number 7 designated. In the cylinder head 7 are an intake camshaft 8th , an exhaust camshaft 9 and spark plugs associated with each cylinder 10 and valves 11 stored for direct injection of fuel. Inlet and exhaust valves of the internal combustion engine 1 are not illustrated.

Der Abgasturbolader 2, somit die Turbinenstufe 3 und die beiden Verdichterstufen 5 und 6 sind in den Zylinderkopf 7 integriert.The turbocharger 2 , thus the turbine stage 3 and the two compressor stages 5 and 6 are in the cylinder head 7 integrated.

Stromaufwärts der beiden Verdichterstufen 5 und 6 ist ein Luftfilter 12 angeordnet, über den Frischluft den beiden Verdichterstufen 5 und 6 zugeführt wird. Hierbei kann der Luftfilter 12 in zwei separate Luftfiltereinheiten unterteilt sein, wobei jeweils eine Luftfiltereinheit einer Verdichterstufe 5 bzw. 6 zugeordnet ist. Eine erste, vom Luftfilter 12 abgehende Zuführleitung 13 führt Frischluft einer Ansaugluftöffnung 14 der ersten Verdichterstufe 5 zu und eine vom Luftfilter 12 abgehende zweite Zuführleitung 15 Frischluft einer Ansaugluftöffnung 16 der zweiten Verdichterstufe 6 zu. Die verdichtete Frischluft wird von der ersten Verdichterstufe 5 über eine Zuführleitung 17 und einen dieser zugeordneten Ladeluftkühler 18 sowie Drosselklappe 19 den Zylindern zugeführt.Upstream of the two compressor stages 5 and 6 is an air filter 12 arranged over the fresh air the two compressor stages 5 and 6 is supplied. Here, the air filter 12 be divided into two separate air filter units, wherein each one air filter unit of a compressor stage 5 respectively. 6 assigned. A first, from the air filter 12 outgoing supply line 13 introduces fresh air to an intake air opening 14 the first compressor stage 5 to and from the air filter 12 outgoing second supply line 15 Fresh air of an intake air opening 16 the second compressor stage 6 to. The compressed fresh air is from the first compressor stage 5 via a supply line 17 and one of these associated intercooler 18 as well as throttle 19 supplied to the cylinders.

Abgase gelangen von den Zylindern durch Abgaskanäle 21 im Zylinderkopf 7 zur Turbinenstufe 3 und von dort zur Abgasanlage 22 des die Brennkraftmaschine 1 aufweisenden Kraftfahrzeuges, bei dem es sich insbesondere um einen Personenkraftwagen handelt.Exhaust gases pass from the cylinders through exhaust ducts 21 in the cylinder head 7 to the turbine stage 3 and from there to the exhaust system 22 of the internal combustion engine 1 having motor vehicle, which is in particular a passenger car.

Die Frischluft wird somit zu den Zylindern nur mittels der ersten Verdichterstufe 5 zugeführt, wobei an die Zuführleitung 17, zwischen der Verdichterstufe 5 und dem Ladeluftkühler 18, eine Zweigleitung 20 angeschlossen ist, die mit einem Druck-Regelventil 23 versehen ist und mit der Zuführleitung 13 verbunden ist. Diese Zuführleitung 13 ist stromaufwärts der Verbindung mit der Zweigleitung 20 mit einem Luftmassenmesser 24 versehen.The fresh air is thus to the cylinders only by means of the first compressor stage 5 supplied to the supply line 17 , between the compressor stage 5 and the intercooler 18 , a branch line 20 connected to a pressure control valve 23 is provided and with the feed line 13 connected is. This supply line 13 is upstream of the connection to the branch line 20 with an air mass meter 24 Mistake.

Die Abgasanlage 22 weist einen Katalysator 25 und einen stromabwärts des Katalysators 25 angeordneten Schalldämpfer 26 auf. Stromabwärts der zweiten Verdichterstufe 6 ist mit dieser eine Zuführleitung 27 verbunden, die stromaufwärts des Katalysators 25 in die Abgasanlage 22 mündet, konkret eine Abgasleitung 28 der Abgasanlage 22. Über den Luftfilter 12 zugeführte Frischluft, die durch die Ansaugöffnung 16 der zweiten Verdichterstufe 6 gelangt, wird somit, zum Zwecke der Sauerstoffanreicherung (Nachoxidation) der Abgasanlage 22 bzw. dem Katalysator 25 zugeführt.The exhaust system 22 has a catalyst 25 and one downstream of the catalyst 25 arranged silencer 26 on. Downstream of the second compressor stage 6 is with this a supply line 27 connected upstream of the catalyst 25 in the exhaust system 22 flows, specifically an exhaust pipe 28 the exhaust system 22 , About the air filter 12 supplied fresh air through the intake 16 the second compressor stage 6 reaches, is thus, for the purpose of oxygen enrichment (post-oxidation) of the exhaust system 22 or the catalyst 25 fed.

Demzufolge dient die eine Verdichterstufe – erste Verdichterstufe 5 – der Aufladung und die andere Verdichterstufe – zweite Verdichterstufe 6 – der Sauerstoffanreicherung des Abgases.Consequently, the one compressor stage serves - first compressor stage 5 - the charging and the other compressor stage - second compressor stage 6 - The oxygen enrichment of the exhaust gas.

Mit Pfeilen sind in der 1 die Strömungswege von Frischluft und Abgas veranschaulicht.With arrows are in the 1 illustrates the flow paths of fresh air and exhaust gas.

Zur Optimierung der Kühlung des Zylinderkopfes 7 kann eine zusätzliche elektrische Kühlmittelpumpe vorgesehen sein, mit der bei Bedarf eine Erhöhung des Kühlwasserdurchsatzes im Zylinderkopf 7 vorgenommen werden kann.To optimize the cooling of the cylinder head 7 may be provided an additional electric coolant pump, with the need for an increase in the cooling water flow in the cylinder head 7 can be made.

Die Ausführungsform nach der 2 unterscheidet sich von derjenigen nach der 1 nur dadurch, dass statt einer Turbinenstufe 3 eine weitere Turbinenstufe 3 vorgesehen ist. Bei dieser Ausführungsform der Brennkraftmaschine bilden die Zylinder zwei Zylinderpaare, wobei die Abgase des einen Zylinderpaares der einen Turbinenstufe 3, die Abgase des anderen Zylinderpaares der anderen Turbinenstufe 3 zugeführt werden. Von den beiden Turbinenstufen 3, 3 gelangen die Abgase über eine Verbindungsleitung 29 in die gemeinsame Abgasleitung 28.The embodiment of the 2 is different from the one after the 1 only in that instead of a turbine stage 3 another turbine stage 3 is provided. In this embodiment of the internal combustion engine, the cylinders form two pairs of cylinders, wherein the exhaust gases of the one cylinder pair of a turbine stage 3 , the exhaust gases of the other cylinder pair of the other turbine stage 3 be supplied. From the two turbine stages 3 . 3 The exhaust gases pass through a connecting line 29 into the common exhaust pipe 28 ,

Mit der Ausführungsform nach der 1 übereinstimmende Teile der Ausführungsform nach 2 sind mit denselben Bezugsziffern bezeichnet.With the embodiment of the 1 Matching parts of the embodiment according to 2 are designated by the same reference numerals.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
BrennkraftmaschineInternal combustion engine
22
Abgasturboladerturbocharger
33
Turbinenstufeturbine stage
44
Wellewave
5 5
Verdichterstufecompressor stage
66
Verdichterstufecompressor stage
77
Zylinderkopfcylinder head
88th
Einlassnockenwelleintake camshaft
99
Auslassnockenwelleexhaust
1010
Zündkerzespark plug
1111
VentilValve
1212
Luftfilterair filter
1313
Zuführleitungfeed
1414
Ansaugluftöffnungair intake port
1515
Zuführleitungfeed
1616
Ansaugluftöffnungair intake port
1717
Zuführleitungfeed
1818
LadeluftkühlerIntercooler
1919
Drosselklappethrottle
2020
Zweigleitungbranch line
2121
Abgaskanalexhaust duct
2222
Abgasanlageexhaust system
2323
DruckregelventilPressure control valve
2424
LuftmassenmesserAir flow sensor
2525
Katalysatorcatalyst
2626
Schalldämpfersilencer
2727
Zuführleitungfeed
2828
Abgasleitungexhaust pipe
2929
Verbindungsleitungconnecting line

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 102007017854 A1 [0003] DE 102007017854 A1 [0003]

Claims (7)

Brennkraftmaschine (1) mit einem Abgasturbolader (2), der in einen Zylinderkopf (7) der Brennkraftmaschine (1) integriert ist, wobei der Abgasturbolader (2) mehrere Verdichterstufen (5, 6) und mindestens eine Turbinenstufe (3) aufweist, sowie mit einer in Strömungsverbindung mit der Turbinenstufe (3) stehenden Abgasanlage (22), dadurch gekennzeichnet, dass mindestens eine Verdichterstufe (6) stromabwärts der Turbinenstufe (3) mit der Abgasanlage (22) verbunden ist.Internal combustion engine ( 1 ) with an exhaust gas turbocharger ( 2 ) in a cylinder head ( 7 ) of the internal combustion engine ( 1 ), wherein the exhaust gas turbocharger ( 2 ) several compressor stages ( 5 . 6 ) and at least one turbine stage ( 3 ) and with one in fluid communication with the turbine stage ( 3 ) standing exhaust system ( 22 ), characterized in that at least one compressor stage ( 6 ) downstream of the turbine stage ( 3 ) with the exhaust system ( 22 ) connected is. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Abgasanlage (22) einen Katalysator (25) aufweist und die mit der Abgasanlage (22) verbundene Verdichterstufe (6) stromaufwärts des Katalysators (25) oder im Bereich des Katalysators (25) mit der Abgasanlage (22) verbunden ist.Internal combustion engine according to claim 1, characterized in that the exhaust system ( 22 ) a catalyst ( 25 ) and with the exhaust system ( 22 ) connected compressor stage ( 6 ) upstream of the catalyst ( 25 ) or in the range of the catalyst ( 25 ) with the exhaust system ( 22 ) connected is. Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abgasturbolader (2) mindestens zwei Verdichterstufen (5, 6) aufweist, wobei mindestens eine Verdichterstufe (5) die Zylinder der Brennkraftmaschine (1) mit Frischluft versorgt und eine Verdichterstufe (6) Frischluft der Abgasanlage (22) zuführt.Internal combustion engine according to claim 1 or 2, characterized in that the exhaust gas turbocharger ( 2 ) at least two compressor stages ( 5 . 6 ), wherein at least one compressor stage ( 5 ) the cylinders of the internal combustion engine ( 1 ) supplied with fresh air and a compressor stage ( 6 ) Fresh air of the exhaust system ( 22 ) feeds. Brennkraftmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass bis zu drei Verdichterstufen (4, 6) vorgesehen sind.Internal combustion engine according to one of claims 1 to 3, characterized in that up to three compressor stages ( 4 . 6 ) are provided. Brennkraftmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass mehrere Turbinenstufen (3) vorgesehen sind, insbesondere bis zu drei Turbinenstufen (3) vorgesehen sind.Internal combustion engine according to one of claims 1 to 4, characterized in that a plurality of turbine stages ( 3 ), in particular up to three turbine stages ( 3 ) are provided. Brennkraftmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass stromaufwärts der Verdichterstufen (4, 6) ein allen Verdichterstufen (4, 6) gemeinsamer Luftfilter (12) angeordnet ist oder den jeweiligen Verdichterstufen (4, 6) zugeordnete, separate Luftfilter angeordnet sind.Internal combustion engine according to one of claims 1 to 5, characterized in that upstream of the compressor stages ( 4 . 6 ) all compressor stages ( 4 . 6 ) common air filter ( 12 ) or the respective compressor stages ( 4 . 6 ) associated, separate air filters are arranged. Brennkraftmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Zylinderkopf (7) einen Kühlmittelkreislauf zum Kühlen des Abgasturboladers (2) aufweist sowie eine Kühlmittelpumpe zum Fördern des Kühlmittels vorgesehen ist, wobei eine zusätzliche elektrische Kühlmittelpumpe zur Erhöhung des Kühlmitteldurchsatzes im Zylinderkopf (7) vorgesehen ist.Internal combustion engine according to one of claims 1 to 6, characterized in that the cylinder head ( 7 ) a coolant circuit for cooling the exhaust gas turbocharger ( 2 ) and a coolant pump for conveying the coolant is provided, wherein an additional electric coolant pump for increasing the coolant throughput in the cylinder head ( 7 ) is provided.
DE102010006309A 2010-01-22 2010-01-22 Combustion engine i.e. diesel engine, for passenger car, has supercharger comprising two compressor stages and turbine stage, where one of compressor stages is connected with exhaust system downstream to turbine stage Withdrawn DE102010006309A1 (en)

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US20150159542A1 (en) * 2013-12-11 2015-06-11 Hyundai Motor Company Engine system having turbocharger
US20150159593A1 (en) * 2013-12-06 2015-06-11 Hyundai Motor Company Engine system having turbocharger
DE102016202799A1 (en) 2016-02-24 2017-08-24 Bayerische Motoren Werke Aktiengesellschaft Method and device for pollutant reduction in the exhaust gas of an internal combustion engine, vehicle

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DE10062377A1 (en) * 2000-12-14 2002-06-27 Siemens Ag Device and method for heating an exhaust gas catalytic converter for a supercharged internal combustion engine
EP1491735A1 (en) * 2002-03-29 2004-12-29 Isuzu Motors Limited Exhaust gas decontamination system and method of controlling the same
DE102007017854A1 (en) 2007-04-16 2008-10-30 Siemens Ag Internal combustion engine
DE102007057603A1 (en) * 2007-11-28 2009-06-04 Volkswagen Ag Internal-combustion engine, has air supply device provided for extracting air from air intake system at position downstream of compressor, and for injecting air into exhaust gas system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975375C (en) * 1941-07-30 1961-11-16 Margarete Leist Exhaust turbine system for internal combustion engines
DE10062377A1 (en) * 2000-12-14 2002-06-27 Siemens Ag Device and method for heating an exhaust gas catalytic converter for a supercharged internal combustion engine
EP1491735A1 (en) * 2002-03-29 2004-12-29 Isuzu Motors Limited Exhaust gas decontamination system and method of controlling the same
DE102007017854A1 (en) 2007-04-16 2008-10-30 Siemens Ag Internal combustion engine
DE102007057603A1 (en) * 2007-11-28 2009-06-04 Volkswagen Ag Internal-combustion engine, has air supply device provided for extracting air from air intake system at position downstream of compressor, and for injecting air into exhaust gas system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150159593A1 (en) * 2013-12-06 2015-06-11 Hyundai Motor Company Engine system having turbocharger
US9435296B2 (en) * 2013-12-06 2016-09-06 Hyundai Motor Company Engine system having turbocharger
US20150159542A1 (en) * 2013-12-11 2015-06-11 Hyundai Motor Company Engine system having turbocharger
US9435250B2 (en) * 2013-12-11 2016-09-06 Hyundai Motor Company Engine system having turbocharger
DE102016202799A1 (en) 2016-02-24 2017-08-24 Bayerische Motoren Werke Aktiengesellschaft Method and device for pollutant reduction in the exhaust gas of an internal combustion engine, vehicle

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