DE102007058618A1 - Turbocharger comprises a position acquisition unit having position sensors for detecting the position of guide vanes and/or the position of a waste gate flap and a control device arranged in a signal connection with the acquisition unit - Google Patents

Turbocharger comprises a position acquisition unit having position sensors for detecting the position of guide vanes and/or the position of a waste gate flap and a control device arranged in a signal connection with the acquisition unit Download PDF

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Publication number
DE102007058618A1
DE102007058618A1 DE102007058618A DE102007058618A DE102007058618A1 DE 102007058618 A1 DE102007058618 A1 DE 102007058618A1 DE 102007058618 A DE102007058618 A DE 102007058618A DE 102007058618 A DE102007058618 A DE 102007058618A DE 102007058618 A1 DE102007058618 A1 DE 102007058618A1
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Germany
Prior art keywords
acquisition unit
turbine
turbocharger
exhaust
guide vanes
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Withdrawn
Application number
DE102007058618A
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German (de)
Inventor
Ralf Dr. Christmann
Volker Dr. Müller
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.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
Borg Warner Automotive Inc
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 BorgWarner Inc, Borg Warner Automotive Inc filed Critical BorgWarner Inc
Priority to DE102007058618A priority Critical patent/DE102007058618A1/en
Publication of DE102007058618A1 publication Critical patent/DE102007058618A1/en
Withdrawn legal-status Critical Current

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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
    • F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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

Abstract

Turbocharger (1) comprises a position acquisition unit (15) having position sensors (16, 17) for detecting the position of guide vanes (14) and/or the position of a waste gate flap (8) and a control device (9) arranged in a signal connection with the position acquisition unit to control the exhaust gas amount passing to the turbine (4) via a bypass line (6). The exhaust gas amount corresponds to the position signals emitted by the position acquisition unit. An independent claim is also included for a method for controlling a turbocharger.

Description

Die Erfindung betrifft einen Turbolader gemäß dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zur Regelung eines Turboladers gemäß dem Oberbegriff des Anspruches 2.The The invention relates to a turbocharger according to the preamble of the claim 1 and a method for controlling a turbocharger according to the preamble of claim 2.

Üblicherweise weisen Turbolader mit variabler Turbinengeometrie (VTG) kein Wastegate auf. Jedoch ist für manche Einsatzfälle (z.B. bei Ottomotoren) eine Anordnung eines Wastegates erforderlich, um den Wirkungsgrad des Turboladers und damit die Leistung des Motors zu optimieren, denn die optimale Abgasmenge für einen Turbolader mit VTG liegt bei mittleren Abgasmengen, wohingegen bei niedrigen oder hohen Abgasmengen der Wirkungsgrad des Turboladers sinkt.Usually turbochargers with variable turbine geometry (VTG) have no wastegate on. However, it is for some applications (For example, in gasoline engines) an arrangement of a wastegate required the efficiency of the turbocharger and thus the performance of the engine to optimize, because the optimal amount of exhaust gas for a turbocharger with VTG is at medium exhaust levels, whereas at low or high Exhaust gas quantities the efficiency of the turbocharger decreases.

Es ist daher Aufgabe der vorliegenden Erfindung, einen Turbolader und ein Verfahren zur Regelung eines Turboladers gemäß dem Oberbegriff des Anspruchs 1 bzw. des Anspruchs 2 zu schaffen, die eine Optimierung des Wirkungsgrades möglich machen.It is therefore an object of the present invention, a turbocharger and a method for controlling a turbocharger according to the preamble of the claim 1 or claim 2 to create, which optimizes the efficiency possible do.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruchs 1 bzw. des Anspruchs 2.The solution This object is achieved by the features of claim 1 and of Claim 2.

Die Grundidee der vorliegenden Erfindung ist darin zu sehen, eine bestimmte Menge an Abgas an der VTG vorbeizuleiten und damit die VTG über die Ladedruckregelstrecke vorzusteuern und den Wastegatebypass dazu zu nutzen, den Turbolader im besten Wirkungsgradbereich zu betreiben.The The basic idea of the present invention is to be seen in a specific Passing amount of exhaust gas past the VTG and thus the VTG over the Pre-control waste gate and the Wastegatebypass to to use the turbocharger in the best efficiency range to operate.

Hierzu wird insbesondere ein auf dem Motorkennfeld des mittels des Turboladers aufgeladenen Motors basierendes Rechenmodell benutzt, um den durch die Bypassleitung zu leitenden Abgasmassenstrom eindeutig zu bestimmen.For this In particular, one on the engine map of the means of the turbocharger charged engine based calculation model used by the to clearly determine the bypass line to conducting exhaust gas mass flow.

Erfindungsgemäß ist es möglich, durch eine entsprechende Positionserfassungseinrichtung die Position der Leitschaufeln der VTG oder die Position der Wastegateklappe zu erfassen. Alternativ dazu können auch beide Positionen erfasst werden.It is according to the invention possible, by a corresponding position detection device, the position the guide vanes of the VTG or the position of the wastegate flap capture. Alternatively, you can also both positions are recorded.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich aus nachfolgender Beschreibung eines Ausführungsbeispiels anhand der Zeichnung.Further Details, advantages and features of the invention will become apparent following description of an embodiment with reference to the drawing.

In der Figur ist eine schematisch stark vereinfachte Darstellung des erfindungsgemäßen Turboladers 1 dargestellt.In the figure is a schematically greatly simplified representation of the turbocharger according to the invention 1 shown.

Der Turbolader 1 weist einen Verdichter 2 mit einem Lufteintritt 10 und einem Luftaustritt 11 auf, dessen Verdichterrad 2' über eine Welle 3 mit einem Turbinenrad 4' einer Turbine 4 in Verbindung steht.The turbocharger 1 has a compressor 2 with an air intake 10 and an air outlet 11 on, whose compressor wheel 2 ' over a wave 3 with a turbine wheel 4 ' a turbine 4 communicates.

Die Turbine 4 weist einen Abgaseinlass 5 auf, der mit einer Abgasleitung 13 eines Motors 12 in Verbindung steht.The turbine 4 has an exhaust inlet 5 on that with an exhaust pipe 13 an engine 12 communicates.

Ferner weist die Turbine 4 eine VTG (variable Turbinengeometrie) mit Leitschaufeln 14, die in der Zeichnung schematisch über eine Schraffur am äußeren Umfang des Turbinenrads 4' angedeutet sind, und einen Abgasauslass 7 auf.Furthermore, the turbine points 4 a VTG (Variable Turbine Geometry) with vanes 14 in the drawing, schematically over a hatching on the outer circumference of the turbine wheel 4 ' are indicated, and an exhaust outlet 7 on.

1 verdeutlicht ferner eine Bypassleitung 6, die vor dem Turbinen-Eintritt vom Abgaseinlass 5 abzweigt und direkt zum Abgasauslass 7 führt, sodass durch diese Bypassleitung 6 die Turbine 4 umgangen wird. 1 further illustrates a bypass line 6 that precede the turbine inlet from the exhaust inlet 5 branches off and directly to the exhaust outlet 7 leads, so through this bypass line 6 the turbine 4 is bypassed.

In der Bypassleitung 6 ist eine Wastegateklappe 8 angeordnet. Die Position der Wastegateklappe 8 wird über einen Positionssensor 16 und die Position der Leitschaufeln 14 der VTG wird über einem Positionssensor 17 einer Positionserfassungseinrichtung 15 ermittelt. Der entsprechende Signalfluss ist in der Figur durch Richtungspfeile von den Positionssensoren 16, 17 zur Positionserfassungseinrichtung 15 gekennzeichnet. Die der Positionserfassungseinrichtung von den Positionssensoren 16, 17 übermittelten Positionen werden von dieser als SignalWASTEGATEKLAPPE SWK bzw. als SignalLEITSCHAUFELN SLS an eine Regeleinrichtung 9 übertragen. In der Regeleinrichtung 9 werden durch die empfangenen Positionssignale SWK und SLS über ein Rechenmodell, das auf einem Motorkennfeld des aufgeladenen Motors 12 basiert, sowohl die in die Bypassleitung 6 einleitbare Abgasmenge bestimmt als auch die Stellung der Wastegateklappe 8 geregelt.In the bypass line 6 is a wastegate flap 8th arranged. The position of the wastegate flap 8th is via a position sensor 16 and the position of the vanes 14 the VTG is above a position sensor 17 a position detection device 15 determined. The corresponding signal flow is in the figure by directional arrows from the position sensors 16 . 17 to the position detection device 15 characterized. The position detection device of the position sensors 16 . 17 transmitted positions are from this as a signal WASTEGATEKLAPPE S WK or as a signal GUIDE S LS to a control device 9 transfer. In the control device 9 are received by the received position signals S WK and S LS via a computational model based on an engine map of the supercharged engine 12 based, both in the bypass line 6 Introduced exhaust gas quantity determines as well as the position of the wastegate flap 8th regulated.

Durch die Erfindung wird ein zumindest weiter optimierter, durch die Bypassleitung zu leitender Abgasmassenstrom erzielt, um den Wirkungsgrad des Turboladers 1 in jedem Betriebsbereich des Motors 12 zu verbessern.By the invention, an at least further optimized, to be guided through the bypass line exhaust gas mass flow is achieved, the efficiency of the turbocharger 1 in every operating range of the engine 12 to improve.

In Ergänzung zur schriftlichen Offenbarung wird explizit auf die zeichnerische Darstellung verwiesen.In complement to the written revelation is explicit on the drawing Referenced illustration.

11
Turbolader/AbgasturboladerTurbocharger / turbocharger
22
Verdichtercompressor
2'2 '
Verdichterradcompressor
33
Wellewave
44
Turbineturbine
4'4 '
Turbinenradturbine
55
Abgaseinlassexhaust inlet
66
Bypass(-leitung)Bypass (conduction)
77
Abgasauslassexhaust outlet
88th
WastegateklappeWastegate flap
99
Regeleinrichtungcontrol device
1010
Lufteintrittair inlet
1111
Luftaustrittair outlet
1212
Motorengine
1313
Abgasleitung vom Motorexhaust pipe from the engine
1414
Leitschaufelnvanes
1515
PositionserfassungseinrichtungPosition detection device
1616
Positionssensorposition sensor
1717
Positionssensorposition sensor
VTGVTG
variable Turbinengeometrievariable turbine geometry
SWK S WK
SignalWASTEGATEKLAPPE Signal WASTEGATEKLAPPE
SLS S LS
SignalLEITSCHAUFELN Signal ladder

Claims (2)

Turbolader (1) – mit einem Verdichter (2) – mit einer mit dem Verdichter (2) über eine Welle (3) verbundenen Turbine (4), die einen Abgaseinlass (5) und einen Abgasauslass (7) aufweist, und die eine variable Turbinengeometrie (VTG) mit um den Abgaseinlass (5) herum angeordneten verstellbaren Leitschaufeln (14) aufweist, und – mit einer Bypassleitung (6), die unter Umgehung der Turbine (4) vom Abgaseinlass (5) abzweigt und zum Abgasauslass (7) führt, und in der eine Wastegateklappe (8) angeordnet ist, gekennzeichnet – durch eine Positionserfassungseinrichtung (15), die zumindest einen Positionssensor (16, 17) zur Erfassung der Stellung der Leitschaufeln (14) und/oder der Stellung der Wastegateklappe (8) aufweist, und – durch eine Regeleinrichtung (9), die mit der Positionserfassungseinrichtung (15) in Signalverbindung steht und die die über die Bypassleitung (6) an der Turbine (4) vorbeizuleitende Abgasmenge entsprechend den von der Positionserfassungseinrichtung 15 übermittelten Positionssignalen (SLS, SLDR) regelt.Turbocharger ( 1 ) - with a compressor ( 2 ) - with one with the compressor ( 2 ) over a wave ( 3 ) connected turbine ( 4 ), which has an exhaust gas inlet ( 5 ) and an exhaust outlet ( 7 ), and a variable turbine geometry (VTG) with around the exhaust inlet ( 5 ) arranged around adjustable guide vanes ( 14 ), and - with a bypass line ( 6 ), bypassing the turbine ( 4 ) from the exhaust inlet ( 5 ) branches off and to the exhaust outlet ( 7 ) and in which a wastegate flap ( 8th ), characterized - by a position detection device ( 15 ), which at least one position sensor ( 16 . 17 ) for detecting the position of the guide vanes ( 14 ) and / or the position of the wastegate flap ( 8th ), and - by a control device ( 9 ) connected to the position detection device ( 15 ) is in signal connection and the via the bypass line ( 6 ) on the turbine ( 4 ) passing amount of exhaust gas according to the from the position detection device 15 transmitted position signals (S LS , S LDR ) controls. Verfahren zur Regelung eines Turboladers (1), – mit einem Verdichter (2) – mit einer mit dem Verdichter (2) über eine Welle (3) verbundenen Turbine (4), die einen Abgaseinlass (5) und einen Abgasauslass (7) aufweist, und die eine variable Turbinengeometrie (VTG) mit um den Abgaseinlass (5) herum angeordneten verstellbaren Leitschaufeln (14) aufweist, und – mit einer Bypassleitung (6), die unter Umgehung der Turbine (4) vom Abgaseinlass (5) abzweigt und zum Abgasauslass (7) führt, und in der eine Wastegateklappe (8) angeordnet ist, gekennzeichnet durch folgende Verfahrensschritte: – Erfassen der Position der Stellung der Leitschaufeln (14) und/oder der Stellung der Wastegateklappe (8), und – Zuführen entsprechender Positionssignale (SLS, SWK) zu einer Regeleinrichtung (9), die auf der Basis der empfangenen Positionssignale (SLS, SWK) und eines auf einem Motorkennfeld eines vom Turbolader (1) aufgeladenen Motors (12) basierenden Rechenmodells die in die Bypassleitung (6) einleitbare Abgasmenge bestimmt und dementsprechend die Stellung der Wastegateklappe (8) regelt.Method for controlling a turbocharger ( 1 ), - with a compressor ( 2 ) - with one with the compressor ( 2 ) over a wave ( 3 ) connected turbine ( 4 ), which has an exhaust gas inlet ( 5 ) and an exhaust outlet ( 7 ), and a variable turbine geometry (VTG) with around the exhaust inlet ( 5 ) arranged around adjustable guide vanes ( 14 ), and - with a bypass line ( 6 ), bypassing the turbine ( 4 ) from the exhaust inlet ( 5 ) branches off and to the exhaust outlet ( 7 ) and in which a wastegate flap ( 8th ), characterized by the following method steps: detecting the position of the position of the guide vanes ( 14 ) and / or the position of the wastegate flap ( 8th ), and - supplying corresponding position signals (S LS , S WK ) to a control device ( 9 ) based on the received position signals (S LS , S WK ) and one on an engine map of one of the turbocharger ( 1 ) charged engine ( 12 ) based in the bypass line ( 6 ) determinable exhaust gas amount and accordingly the position of the wastegate flap ( 8th ) regulates.
DE102007058618A 2006-12-18 2007-12-05 Turbocharger comprises a position acquisition unit having position sensors for detecting the position of guide vanes and/or the position of a waste gate flap and a control device arranged in a signal connection with the acquisition unit Withdrawn DE102007058618A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102007058618A DE102007058618A1 (en) 2006-12-18 2007-12-05 Turbocharger comprises a position acquisition unit having position sensors for detecting the position of guide vanes and/or the position of a waste gate flap and a control device arranged in a signal connection with the acquisition unit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006059738 2006-12-18
DE102006059738.9 2006-12-18
DE102007058618A DE102007058618A1 (en) 2006-12-18 2007-12-05 Turbocharger comprises a position acquisition unit having position sensors for detecting the position of guide vanes and/or the position of a waste gate flap and a control device arranged in a signal connection with the acquisition unit

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DE102007058618A1 true DE102007058618A1 (en) 2008-06-19

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DE102007058618A Withdrawn DE102007058618A1 (en) 2006-12-18 2007-12-05 Turbocharger comprises a position acquisition unit having position sensors for detecting the position of guide vanes and/or the position of a waste gate flap and a control device arranged in a signal connection with the acquisition unit

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11629658B2 (en) 2021-06-22 2023-04-18 Volkswagen Aktiengesellschaft Method for activating a boost pressure control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11629658B2 (en) 2021-06-22 2023-04-18 Volkswagen Aktiengesellschaft Method for activating a boost pressure control

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