DE10332025A1 - Compressor for an exhaust gas turbocharger for an internal combustion engine comprises a dead space arranged in the flow region of the compressor wheel and communicating exclusively with a compressor inlet channel via a connection opening - Google Patents
Compressor for an exhaust gas turbocharger for an internal combustion engine comprises a dead space arranged in the flow region of the compressor wheel and communicating exclusively with a compressor inlet channel via a connection opening Download PDFInfo
- Publication number
- DE10332025A1 DE10332025A1 DE10332025A DE10332025A DE10332025A1 DE 10332025 A1 DE10332025 A1 DE 10332025A1 DE 10332025 A DE10332025 A DE 10332025A DE 10332025 A DE10332025 A DE 10332025A DE 10332025 A1 DE10332025 A1 DE 10332025A1
- Authority
- DE
- Germany
- Prior art keywords
- compressor
- wheel
- dead space
- connection opening
- compressor wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- 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
-
- 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
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
Description
Die Erfindung bezieht sich auf einen Verdichter, insbesondere für eine Brennkraftmaschine, nach dem Oberbegriff des Anspruches 1.The The invention relates to a compressor, in particular for an internal combustion engine, according to the preamble of claim 1.
Aus
der Druckschrift
Um
den Arbeitsbereich von Verdichtern zu erweitern, welche in Richtung
kleiner, durchzusetzender Massenströme von der Pumpgrenze und in Richtung
großer
Massenströme
von der Stopfgrenze begrenzt ist, werden so genannte Kennfeld-Stabilisierungs-Maßnahmen
eingesetzt. So ist es beispielsweise aus der Druckschrift
Der Erfindung liegt das Problem zugrunde, mit einfachen Maßnahmen den Arbeitsbereich eines Verdichters zu erweitern.Of the Invention is based on the problem with simple measures to expand the working range of a compressor.
Dieses Problem wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This Problem is inventively with the Characteristics of claim 1 solved. The dependent claims give expedient further education at.
Bei dem erfindungsgemäßen Verdichter ist in die Wandung des Verdichtereinlasskanals ein Totraum eingebracht, welcher ausschließlich mit dem Verdichtereinlasskanal verbunden ist und darüber hinaus keine weiteren Verbindungen zu anderen Volumina aufweist, insbesondere von der Atmosphäre abgeschnitten ist. Die Verbindung zum Verdichtereinlasskanal erfolgt über eine Verbindungsöffnung in der Wandung des Einlasskanals, wobei die Verbindungsöffnung benachbart zur Radeintrittskante des Verdichterrades gelegen ist.at the compressor according to the invention a dead space is introduced into the wall of the compressor inlet channel, which exclusively is connected to the compressor inlet passage and beyond has no further connections to other volumes, in particular cut off from the atmosphere is. The connection to the compressor inlet channel via a connecting opening in the wall of the inlet channel, wherein the connection opening adjacent located to the Radeintrittskante of the compressor wheel.
In dem Volumen des Totraumes kann sich eine durch die Rotation des Verdichterrades angeregte Mitdrallströmung ausbilden, welche sich insbesondere bei niedrigen Massendurchsätzen positiv auf die Anströmungsverhältnisse im Bereich des Radeintrittes auswirkt. Besonders bei kleinen Luftdurchsätzen wird die Fehlanströmung der Beschaufelung des Verdichterrades im Bereich des Radeintrittes aufgrund der Mitdrallkomponente speziell im Bereich der ablösungsgefährdeten Schaufelspitzen merklich gemindert. Die Pumpgrenze des Verdichters wird dadurch in Richtung kleinerer Durchsätze verschoben. Weitere Maßnahmen, insbesondere Vorleit- oder Nachleitapparate oder ein Bypass zum Verdichtereinlasskanal sind nicht zwingend erforderlich, können aber gegebenenfalls zur Verbesserung der Wirkung zusätzlich vorgesehen sein.In the volume of the dead space can be a by the rotation of the Compressor wheel form excited Mitdrallströmung, which is especially at low mass flow rates positive on the flow conditions in the area of the wheel entry. Especially at low air flow rates the false flow the blading of the compressor wheel in the region of the wheel entry due to the Mitdrallkomponente especially in the area of risk of separation Blade tips noticeably reduced. The surge limit of the compressor is thereby shifted towards smaller throughputs. Further measures, in particular Vorleit- or Nachleitapparate or a bypass to the compressor inlet channel are not mandatory, but may be necessary for Improvement of the effect additionally be provided.
Zweckmäßig umschließt der Totraum den Verdichtereinlasskanal ringförmig, wobei auch die Verbindungsöffnung zwischen Totraum und Verdichtereinlasskanal Ringform aufweist. In dieser Ausführung werden über den gesamten Umfang des Verdichterrades gleiche Druckverhältnisse und Betriebsbedingungen geschaffen.The dead space encloses appropriately the compressor inlet channel annular, where also the connection opening between dead space and compressor inlet channel ring shape. In this version be over the same circumference of the compressor impeller equal pressure conditions and operating conditions.
Für die Geometrie und das Volumen des Totraumes können Größenordnungen formuliert werden, die sich als besonders vorteilhaft erwiesen haben. So kann es zweckmäßig sein, dass die in Längsrichtung des Verdichtereinlasskanals gemessene axiale Breite der Verbindungsöffnung größer ist als 6 ‰ des Austrittsdurchmessers des Verdichterrades. Diese Untergrenze stellt eine ausreichend große Breite des Einlasses in den Totraum für die sich ausbildende Mitdrallströmung sicher. Als Obergrenze soll die axiale Breite der Verbindungsöffnung des Totraumes nicht größer sein als 85 % des Austrittsdurchmessers des Verdichterrades. Darüber hinausgehende axiale Breiten zeigen keine weitere Verbesserung im Hinblick auf den Arbeitsbereich im Verdichterkennfeld.For the geometry and the volume of the dead space can orders of magnitude be formulated, which have proven to be particularly advantageous. So it may be appropriate that in the longitudinal direction The axial width of the connection opening measured in the compressor inlet channel is greater as 6 ‰ of Outlet diameter of the compressor wheel. This lower limit represents a sufficiently large width of the inlet into the dead space for the forming Mitdrallströmung for sure. The upper limit is the axial width of the connection opening of the Dead space can not be bigger as 85% of the discharge diameter of the compressor wheel. Beyond axial widths show no further improvement in terms of the working area in the compressor map.
Das Volumen des Totraumes beträgt zweckmäßig nicht mehr als das Hundertfache der dritten Potenz des Austrittsdurchmessers. Eine weitere Vergrößerung des Totraumvolumens würde ebenfalls keine verbesserte Wirkung ergeben.The Volume of the dead space is not functional more than one hundred times the third power of the exit diameter. Another enlargement of the Dead space volume would also do not give an improved effect.
Bezogen auf die Radeintrittskante des Verdichterrades kann die Verbindungsöffnung des Totraumes in einem Bereich liegen, der entweder ausschließlich stromauf des Verdichterrades positioniert ist oder aber auch eine axiale Überschneidung mit den Verdichterradschaufeln besitzen kann. Bezogen auf den Austrittsdurchmesser des Verdichterrades kann die axiale Position in Bezug auf die Radeintrittskante einen Wert zwischen –0.2 und +0.9 einnehmen, wobei der negative Wert eine axiale Überschneidung mit den Verdichterradschaufeln kennzeichnet, wohingegen bei einem positiven Wert die Verbindungsöffnung vollständig stromauf der Verdichterradeintrittskante angeordnet ist.Based on the Radeintrittskante of the compressor wheel, the connection opening of the Totraumes are in an area that either exclusively upstream the compressor wheel is positioned or even an axial overlap may have with the Verdichterradschaufeln. Related to the exit diameter the compressor wheel can the axial position with respect to the Radeintrittskante a value between -0.2 and +0.9, where the negative value is an axial overlap with the compressor wheel blades, whereas at a positive value the connection opening Completely is arranged upstream of the compressor impeller leading edge.
Der Verdichter ist vorteilhafter Bestandteil eines Abgasturboladers, der als zusätzliches Aggregat in eine Brennkraftmaschine eingebaut wird. Der Abgasturbolader umfasst eine von den Abgasen der Brennkraftmaschine anzutreibende Abgasturbine, deren Rotation über eine Welle auf das Verdichterrad im Verdichter übertragen wird, welcher über den Verdichtereinlasskanal zugeführte Verbrennungsluft auf einen erhöhten Ladedruck verdichtet. Die Abgasturbine kann gegebenenfalls mit variabler Turbinengeometrie zur veränderlichen Einstellung des wirksamen Turbineneintrittsdurchmessers ausgestattet sein.Of the Compressor is an advantageous part of an exhaust gas turbocharger, as an additional Aggregate is installed in an internal combustion engine. The turbocharger includes a driven by the exhaust gases of the internal combustion engine Exhaust gas turbine whose rotation is over a wave is transmitted to the compressor wheel in the compressor, which via the Compressor inlet channel supplied Combustion air to an elevated Boost pressure compacted. The exhaust gas turbine can optionally with variable Turbine geometry for variable Adjustment of the effective turbine inlet diameter equipped be.
Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:Further Advantages and expedient designs are the further claims, the figure description and the drawings. Show it:
In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen.In The figures are the same components with the same reference numerals.
In
Der
Verdichtereinlasskanal
Das
Volumen V des Totraumes
Als weitere geometrische Beziehung kann ein Verhältnis für die axiale, in Richtung der Längsachse des Laders gemessene Breite a der Verbindungsöffnung bezogen auf den Außendurchmesser D des Verdichterrades angegeben werden. Das Verhältnis von axialer Breite a der Verbindungsöffnung zu Austrittsdurchmesser D des Verdichterrades liegt vorteilhaft in einem Bereich größer 0.006 (6 ‰) und kleiner 0.85 (85 %).When another geometric relationship may be a ratio for the axial, in the direction of longitudinal axis Width of the connection opening measured relative to the outer diameter D of the loader be specified of the compressor wheel. The ratio of axial width a the connection opening to Discharge diameter D of the compressor wheel is advantageous in an area greater than 0.006 (6 ‰) and less than 0.85 (85%).
Schließlich kann
die axiale Position b der Verbindungsöffnung relativ zur Radeintrittskante
In
Im
Ausführungsbeispiel
gemäß
Im
Verdichtereinlasskanal
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10332025A DE10332025A1 (en) | 2003-07-15 | 2003-07-15 | Compressor for an exhaust gas turbocharger for an internal combustion engine comprises a dead space arranged in the flow region of the compressor wheel and communicating exclusively with a compressor inlet channel via a connection opening |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10332025A DE10332025A1 (en) | 2003-07-15 | 2003-07-15 | Compressor for an exhaust gas turbocharger for an internal combustion engine comprises a dead space arranged in the flow region of the compressor wheel and communicating exclusively with a compressor inlet channel via a connection opening |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10332025A1 true DE10332025A1 (en) | 2005-02-03 |
Family
ID=33560117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10332025A Withdrawn DE10332025A1 (en) | 2003-07-15 | 2003-07-15 | Compressor for an exhaust gas turbocharger for an internal combustion engine comprises a dead space arranged in the flow region of the compressor wheel and communicating exclusively with a compressor inlet channel via a connection opening |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10332025A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008135173A1 (en) | 2007-04-27 | 2008-11-13 | Bayerische Motoren Werke | Compressor for an exhaust gas turbocharger |
-
2003
- 2003-07-15 DE DE10332025A patent/DE10332025A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008135173A1 (en) | 2007-04-27 | 2008-11-13 | Bayerische Motoren Werke | Compressor for an exhaust gas turbocharger |
US8388312B2 (en) | 2007-04-27 | 2013-03-05 | Bayerische Motoren Werke Aktiengesellschaft | Compressor for an exhaust gas turbocharger |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8110 | Request for examination paragraph 44 | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20130704 |