DE102005031258A1 - Compressor drive for vehicle IC engine turbocharging, has compressor mechanically accelerated in transient operating stage by gear unit during variation of gear transmission ratio along with engine that is driven in stationary operation - Google Patents
Compressor drive for vehicle IC engine turbocharging, has compressor mechanically accelerated in transient operating stage by gear unit during variation of gear transmission ratio along with engine that is driven in stationary operation Download PDFInfo
- Publication number
- DE102005031258A1 DE102005031258A1 DE200510031258 DE102005031258A DE102005031258A1 DE 102005031258 A1 DE102005031258 A1 DE 102005031258A1 DE 200510031258 DE200510031258 DE 200510031258 DE 102005031258 A DE102005031258 A DE 102005031258A DE 102005031258 A1 DE102005031258 A1 DE 102005031258A1
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- Germany
- Prior art keywords
- compressor
- engine
- drive according
- compressor drive
- transmission
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/04—Mechanical drives; Variable-gear-ratio drives
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
Description
Verbrennungsmotoren erzielen bessere Wirkungsgrade, besseres Abgasverhalten und höhere Leistungs- und Drehmomentdichten, wenn ein Kompressor die Frischluft vorverdichtet. Besonders geeignet zum Antrieb solcher Verdichter sind Turbinen, die aus der Abgasenergie gespeist werden. Nachteilig dabei ist die Tatsache, dass somit ein passives System aufgebaut wir, bei dem zunächst die Kraftstoffmenge über die Leistungsregelung erhöht wird, ohne dass die Vorverdichtungsleistung gleichzeitig zunimmt, und damit zunächst eine geringe Leistungszunahme entsteht, mit der auch ein Anstieg der Abgasenergie einhergeht, durch den die Turbine beschleunigt wird. Die Folge ist ein zeitverzögertes Ansprechen des Motors auf Leistungsanforderung, bekannt als Turboloch. Zusätzlich verstärkt wird dieses Phänomen durch die Tatsache, dass die Turbine in dieser instationären Phase nicht nur zu geringe Abgasenthalpie vorfindet sondern darüber hinaus die Strömungsgeschwindigkeit nicht zur Schaufelgeometrie passt, die Turbine also im Zustand partiellen Strömungsabrisses betrieben wird.combustion engines achieve better efficiencies, better emissions and higher performance and torque densities when a compressor pre-compresses the fresh air. Particularly suitable for driving such compressors are turbines that be fed from the exhaust gas energy. The disadvantage here is the fact that we have built a passive system in which the first Amount of fuel over the power control increases without simultaneously increasing the precompression performance, and at first a small increase in performance occurs, with an increase associated with the exhaust gas energy through which the turbine accelerates becomes. The result is a time-delayed one Motor response to power demand, known as turbo lag. additionally reinforced will this phenomenon by the fact that the turbine in this transient phase not only to low exhaust enthalpy finds but beyond the flow velocity does not match the blade geometry, ie the turbine in a state of partial stall is operated.
Abhilfe sollen dazu Registersysteme schaffen, bei denen mehrere kleine Verdichter mechanisch oder über die Abgasenergie angetrieben mit entsprechend geringeren Massenträgheitsmomenten verwendet werden, wodurch die beschriebenen, negativen Auswirkungen reduziert aber nicht eliminiert werden.remedy are to create register systems in which several small compressors mechanically or over the exhaust energy driven with correspondingly lower mass moments of inertia be used, reducing the negative effects described reduced but not eliminated.
Eine andere Alternative ist die Verwendung eines rein mechanisch angetriebenen Verdichters in Kombination mit einem stufenlosen Getriebe mit schneller Regelaktuatorik, die als aktives System Luft und Kraftstoff synchron regelt. Damit lassen sich sowohl hohe Leistungsdichten als auch schnelles Ansprechen und gute Abgaswerte erzielen.A Another alternative is the use of a purely mechanically driven Compressor in combination with a continuously variable transmission with faster Regelaktuatorik, as an active system air and fuel synchronous regulates. This can be both high power densities and achieve fast response and good emissions.
Der Nachteil dieser Lösung liegt in der hohen Antriebsleistung, die permanent der Kurbelwelle entzogen und durch die Getriebe des Laderpaketes transportiert wird. Damit wird die Gesamtenergiebilanz schlechter, da die Abgasenthalpie ungenutzt bleibt und die Getriebe müssen gross, schwer und teuer auf lange Betriebszeiten ausgelegt werden.Of the Disadvantage of this solution lies in the high drive power, which is permanent of the crankshaft withdrawn and transported by the gearbox of the loader package. Thus, the total energy balance is worse because the exhaust enthalpy remains unused and the gears must be big, heavy and expensive be designed for long periods of operation.
Mit der vorliegenden Erfindung wird eine neue Anordnung festgelegt, bestehend aus:
- • Einem regelbaren Getriebe
- • Einem Hochgetriebe (falls notwendig je nach Verdichtertyp)
- • Einem Strömungsverdichter
- • Einem Freilauf
- • Einer Abgasturbine
- • An adjustable transmission
- • a high gearbox (if necessary depending on compressor type)
- • A flow compressor
- • A freewheel
- • an exhaust gas turbine
Von der Kurbelwelle wird mechanische Leistung entnommen, mit der das regelbare Getriebe passend zur Leistungsanforderung auf die Drehzahl eingeregelt wird, die nach Übersetzung durch das Hochgetriebe zur benötigten Drehzahl des Verdichters führt. Die Turbine wird dabei ebenfalls hoch beschleunigt. Die somit spontan erhöhte Leistung des Verbrennungsmotors führt gleichzeitig zum Anstieg der Abgasenthalpie und damit zu erhöhter Turbinenleistung. Die bereits anliegende, erhöhte Drehzahl der Turbine garantiert einen strömungstechnisch optimalen Wirkungsgrad ohne regelbare Leitschaufeln. Sobald die Turbinenleistung ausreicht, um den Verdichter anzutreiben, wird über den Freilauf der mechanische Leistungszweig abgekoppelt.From the crankshaft is removed mechanical power, with the adjustable gearbox adjusted to the speed according to the power requirement will, after translation through the high gear to the required Speed of the compressor leads. The turbine is also accelerated high. The thus spontaneous increased Power of the internal combustion engine leads at the same time to the rise of Exhaust gas enthalpy and thus increased Turbine power. The already applied, increased speed of the turbine guarantees a fluidic optimal efficiency without adjustable vanes. As soon as the Turbine power is sufficient to drive the compressor is over the Freewheel disconnected from the mechanical power branch.
Mit dieser Anordnung wird die Abgasenthalpie in maximaler Weise genutzt zur Erzeugung der Vorverdichtungsleistung und dennoch ein aktives System mit optimalem Transientverhalten erzielt. Beide vorgeschalteten Getriebe können kostengünstig und kompakt ausgelegt werden, da die Betriebszyklen extrem kurz sind. Bei Regelzeiten von 100 ms bei hohen Stufensprüngen in der Leistungsanforderung würden in den 4000 Betriebsstunden eines Fahrzeugmotors mit 40000 stufenartigen Leistungsanforderungen ergäbe sich eine Gesamtbetriebszeit für das Getriebe bei maximaler Last und höchster Übersetzung von ca. 11 Stunden. Wegen der sehr kurzen Lastintervalle würde eine aufwendige Kühlung des Getriebeöls entfallen können. Die Abkopplung des Getriebes erfolgt kombiniert oder alternativ sowohl passiv über den Freilauf als auch aktiv über die Aktuatorik des regelbaren Getriebes.With This arrangement, the exhaust enthalpy is used in the maximum way for generating the precompression performance and yet an active system achieved with optimal transient behavior. Both upstream Gear can economical and compact, since the operating cycles are extremely short are. With control times of 100 ms for high incremental steps in the performance requirement would in the 4000 hours of operation of a vehicle engine with 40000 step-like Performance requirements a total operating time for the gearbox at maximum load and maximum gear ratio of about 11 hours. Because of the very short load intervals, a complex cooling of the transmission oil can be omitted. The decoupling of the transmission is combined or alternatively both passively over the freewheeling as well as active over the Actuatorics of the variable transmission.
In einer bevorzugten Ausführung der Erfindung ist das regelbare Getriebe ein Satellitengetriebe.In a preferred embodiment In the invention, the variable speed transmission is a satellite transmission.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510031258 DE102005031258A1 (en) | 2005-07-05 | 2005-07-05 | Compressor drive for vehicle IC engine turbocharging, has compressor mechanically accelerated in transient operating stage by gear unit during variation of gear transmission ratio along with engine that is driven in stationary operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510031258 DE102005031258A1 (en) | 2005-07-05 | 2005-07-05 | Compressor drive for vehicle IC engine turbocharging, has compressor mechanically accelerated in transient operating stage by gear unit during variation of gear transmission ratio along with engine that is driven in stationary operation |
Publications (1)
Publication Number | Publication Date |
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DE102005031258A1 true DE102005031258A1 (en) | 2007-01-18 |
Family
ID=37563324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE200510031258 Withdrawn DE102005031258A1 (en) | 2005-07-05 | 2005-07-05 | Compressor drive for vehicle IC engine turbocharging, has compressor mechanically accelerated in transient operating stage by gear unit during variation of gear transmission ratio along with engine that is driven in stationary operation |
Country Status (1)
Country | Link |
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DE (1) | DE102005031258A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4429855C1 (en) * | 1994-08-23 | 1995-08-17 | Daimler Benz Ag | Compound turbocharged IC engine |
DE10140520A1 (en) * | 2001-08-17 | 2003-02-27 | Fischer Ina | Supercharger for internal combustion engine has stageless regulation of its revs relative to those of engine |
-
2005
- 2005-07-05 DE DE200510031258 patent/DE102005031258A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4429855C1 (en) * | 1994-08-23 | 1995-08-17 | Daimler Benz Ag | Compound turbocharged IC engine |
DE10140520A1 (en) * | 2001-08-17 | 2003-02-27 | Fischer Ina | Supercharger for internal combustion engine has stageless regulation of its revs relative to those of engine |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |