DE10144663B4 - Internal combustion engine with two turbochargers with compressor bypass and method thereof - Google Patents
Internal combustion engine with two turbochargers with compressor bypass and method thereof Download PDFInfo
- Publication number
- DE10144663B4 DE10144663B4 DE10144663A DE10144663A DE10144663B4 DE 10144663 B4 DE10144663 B4 DE 10144663B4 DE 10144663 A DE10144663 A DE 10144663A DE 10144663 A DE10144663 A DE 10144663A DE 10144663 B4 DE10144663 B4 DE 10144663B4
- Authority
- DE
- Germany
- Prior art keywords
- internal combustion
- combustion engine
- threshold
- compressor bypass
- control unit
- 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 - Fee Related
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
- F02B37/004—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives 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
- F02B37/013—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
- F02B37/12—Control of the pumps
-
- 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
Brennkraftmaschine
mit Abgasturboaufladung, mit
mindestens einer Hochdruckstufe
(2);
mindestens einer Niederdruckstufe (3); und
einer
Verdichterumgehung (4) für
den Hochdruckverdichter (5) mindestens einer Hochdruckstufe (2);
gekennzeichnet
durch
eine Steuereinheit (9), die das Öffnen bzw. Schließen der Verdichterumgehung
(4) abhängig
von einer Öffnungsschwelle
und einer Schließschwelle
im Motordrehzahl-Motorlast-Kennfeld steuert,
wobei die sprunghafte Änderung
des von der Brennkraftmaschine (10) abgegebenen Drehmoments beim
schlagartigen Öffnen
der Verdichterumgehung (4) durch motorinterne Eingriffe kompensiert
wird.Internal combustion engine with turbocharger, with
at least one high-pressure stage (2);
at least one low-pressure stage (3); and
a compressor bypass (4) for the high-pressure compressor (5) of at least one high-pressure stage (2);
marked by
a control unit (9) that controls the opening or closing of the compressor bypass (4) depending on an opening threshold and a closing threshold in the engine speed motor load map,
wherein the abrupt change in the torque output by the internal combustion engine (10) during abrupt opening of the compressor bypass (4) is compensated for by internal engine interventions.
Description
Die Erfindung betrifft eine Brennkraftmaschine mit zwei Abgasturboladern mit Verdichterumgehung und ein Verfahren zum Betrieb einer derartigen Brennkraftmaschine nach dem Oberbegriff des Anspruches 1.The The invention relates to an internal combustion engine with two exhaust gas turbochargers with compressor bypass and a method for operating such an internal combustion engine according to the preamble of claim 1.
Aus
der
Aus
der
In
der
Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine bereit zu stellen, die die genannten Nachteile im wesentlichen oder gar vollständig beseitigt. Diese Aufgabe wird durch die Merkmale der Patentansprüche gelöst.Of the Invention is based on the object, an internal combustion engine ready to put the said disadvantages substantially or even Completely eliminated. This object is solved by the features of the claims.
Die Erfindung geht von dem Grundgedanken aus, das Öffnen und Schließen der Verdichterumgehung abhängig von einer geeigneten Strategie zu steuern. Dazu sind im Motordrehzahl-Motordrehmoment-Kennfeld der Brennkraftmaschine entsprechende Schwellen zum Öffnen und Schließen der Verdichterumgehung definiert. Eine Steuereinheit steuert das Öffnen bzw. das Schließen der Verdichterumgehung abhängig von einer Öffnungsschwelle bzw. einer Schließschwelle, wobei die beiden Schwellen sich voneinander unterscheiden, d.h. im Kennfeld einen definierten Abstand zueinander haben. Dieser Abstand zwischen den Schwellen bewirkt eine Hysterese, bezüglich der Regelung der Verdichterumgehung.The Invention is based on the idea of opening and closing the Compressor bypass dependent to steer by an appropriate strategy. These are in the engine speed engine torque map the engine corresponding thresholds for opening and Shut down the compressor bypass defined. A control unit controls the opening or the closing the compressor bypass from an opening threshold or a closing threshold, the two thresholds being different from each other, i. have a defined distance to each other in the map. This distance between the thresholds causes a hysteresis, with respect to Control of the compressor bypass.
Vorzugsweise ist für jeden Gang in der Steuereinheit ein eigener Parametersatz für die Öffnungsschwelle und die Schließschwelle abgelegt. Alternativ dazu sind im Steuergerät zwei unterschiedliche Parametersätze abgelegt, ein Parametersatz für niedrige Gänge und ein Parametersatz für höhere Gänge, beispielsweise ab dem dritten Gang.Preferably is for Each gear in the control unit has its own parameter set for the opening threshold and the closing threshold stored. Alternatively, two different parameter sets are stored in the control unit, a parameter set for low Aisles and a parameter set for higher gears, for example from the third gear.
Die Schwellen sind entweder starr oder adaptiv ausgeführt. Im Falle von adaptiven Schwellen erfolgt die Adaption gangabhängig, fahrzeuggeschwindigkeitsabhängig und/oder zeitabhängig. Beispielsweise erfolgt bei einer längeren Fahrt unter hoher Last mit im wesentlichen stationären Bedingungen eine Verschiebung der Öffnungsschwelle und der Schließschwelle hin in Richtung niedriger Drehzahlen und niedriger Drehmomente im Kennfeld. Alternativ dazu wird lediglich eine der Schwellen verschoben, um dadurch die Hysterese zu beeinflussen.The Thresholds are either rigid or adaptive. in the In the case of adaptive thresholds, the adaptation is gear-dependent, vehicle-speed-dependent and / or time-dependent. For example, takes place at a long drive under high load with essentially stationary Conditions a shift of the opening threshold and the closing threshold towards low speeds and low torques in the Map. Alternatively, just move one of the thresholds to influence the hysteresis.
Bei der erfindungsgemäßen Brennkraftmaschine wird die schlagartige Änderung des Spülgefälles beim Öffnen der Verdichterumgehung durch motorinterne Maßnahmen kompensiert. Im Falle eines Dieselmotors wird entweder der Einspritzbeginn-Zeitpunkt und/oder die Einspritzmenge geändert. Im Falle eines Ottomotors wird entweder der Zündzeitpunkt, die Kraftstoffmenge und/oder die Drosselklappenstellung verstellt. Durch diese motorinternen Maßnahmen kann das vom Motor abgegebene Moment zum Zeitpunkt der Öffnung der Verdichterumgehung stetig oder gar konstant gehalten werden. Während der Übergang zwischen dem Zustand „Verdichterumgehung offen" und „Verdichterumgehung geschlossen" schlagartig zu erfolgen hat, erfolgt die Nachstellung der genannten Motorparameter Einspritzzeitpunkt und Einspritzmenge beim Dieselmotor bzw. Einspritzmenge, Drosselklappenstellung und Zündzeitpunkt beim Ottomotor rampenförmig, d.h. verzögert. Die Steilheit der Rampe ist dabei abhängig vom aktuellen Betriebszustand des Motors und der gewählten Strategie, d.h. der aktuellen Lage der Schwellen im Motorkennfeld. Die Anpassung der motorinternen Parameter muß beispielsweise bei einer Volllastbeschleunigung in einem höheren Gang schneller erfolgen als bei einer längeren Fahrt mit stationären Bedingungen, um in Falle der Volllastbeschleunigung die sprunghafte Änderung des Moments unmittelbar und für den Fahrer unmerklich zu kompensieren. Bei einer längeren Fahrt unter im wesentlichen stationären Bedingungen kann der Momentensprung langsamer kompensiert werden.In the internal combustion engine according to the invention, the abrupt change in the flushing gradient when opening the compressor bypass is compensated by internal engine measures. In the case of a diesel engine, either the start of injection time and / or the injection quantity is changed. In the case of a gasoline engine, either the ignition timing, the amount of fuel and / or the throttle position is adjusted. By these internal engine measures, the torque delivered by the engine at the time of opening the compressor bypass can be kept constant or even constant. While the transition between the state "comp Accumulation open "and" compressor bypass closed "has to be made abruptly, the adjustment of said engine parameters injection timing and injection quantity in the diesel engine or injection quantity, throttle position and ignition timing in the gasoline engine ramped, ie delayed. The steepness of the ramp depends on the current operating state of the engine and the selected strategy, ie the current position of the thresholds in the engine map. The adjustment of the engine-internal parameters must be faster, for example, at a full load acceleration in a higher gear than a longer drive with stationary conditions to compensate imperceptible in the event of full load acceleration, the sudden change of torque immediately and for the driver. During a longer journey under essentially stationary conditions, the torque jump can be compensated more slowly.
Bei geöffneter Verdichterumgehung erfolgt erfindungsgemäß die Ladedruckregelung über die Regelung der Abblaseklappe (Wastegate) an der Niederdruckturbine. Die Ladedruckregelklappe der Hochdruckturbine ist bei geöffneter Verdichterumgehung vollständig geöffnet, so daß dadurch die Hochdruckturbine umgangen wird.at open Compressor bypass occurs according to the invention, the boost pressure control over the scheme the discharge flap (wastegate) on the low-pressure turbine. The wastegate the high pressure turbine is open Compressor bypass completely open, so that the high-pressure turbine is bypassed.
Zur weiteren Steigerung der Anfahrdynamik wird vorzugsweise während der ersten Phase eines Beschleunigungsvorganges die Abblaseklappe (Wastegate) an der Niederdruckturbine geöffnet. Diese Maßnahme senkt den Gegendruck zur Hochdruckturbine, wodurch sich das Druckgefälle an der Hochdruckturbine vergrößert. Somit steht dem Hochdruckturbolader mehr Energie zur Beschleunigung des Rotors zur Verfügung. Die Folge dessen ist ein schnellerer Motormomentenaufbau zur Folge des beschleunigten Ladedruckaufbaus.to further increase in the starting dynamics is preferably during the first phase of an acceleration process the blow-off valve (wastegate) opened at the low pressure turbine. This measure lowers the back pressure to the high pressure turbine, causing the pressure drop at the High-pressure turbine enlarged. Consequently is the high pressure turbocharger more energy to accelerate the Rotor available. The consequence of this is a faster engine torque build-up result the accelerated boost pressure build-up.
Die erfindungsgemäße Brennkraftmaschine ist mit dem Vorteil verbunden, daß die erfindungsgemäße zweistufige Aufladung mit Verdichterumgehung des Hochdruckverdichters das Drehmomentspektrum beispielsweise eines Dieselmotors erheblich erweitert. Sowohl bei tiefen als auch bei hohen Motordrehzahlen kann der Mitteldruck des abgasturboaufgeladenen Motors erheblich gesteigert werden. Dies ermöglicht die erfindungsgemäße intelligente Steuerung der Verdichterumgehung des Hochdruckverdichters.The inventive internal combustion engine is associated with the advantage that the two-stage according to the invention Charging with compressor bypass of high pressure compressor the torque spectrum considerably expanded, for example, a diesel engine. Both at low as well as at high engine speeds, the medium pressure of the exhausted engine can be significantly increased. This allows the inventive intelligent controller the compressor bypass of the high pressure compressor.
Die Erfindung wird anhand der beigefügten Zeichnungen näher erläutert. Es zeigen:The Invention will become apparent from the accompanying drawings explained in more detail. It demonstrate:
Die
in
Der
Hochdruckverdichter
Von
einer Steuereinheit
Die
Steuereinheit
Die
Steuereinheit
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10144663A DE10144663B4 (en) | 2001-09-12 | 2001-09-12 | Internal combustion engine with two turbochargers with compressor bypass and method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10144663A DE10144663B4 (en) | 2001-09-12 | 2001-09-12 | Internal combustion engine with two turbochargers with compressor bypass and method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10144663A1 DE10144663A1 (en) | 2003-04-03 |
DE10144663B4 true DE10144663B4 (en) | 2005-11-03 |
Family
ID=7698582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10144663A Expired - Fee Related DE10144663B4 (en) | 2001-09-12 | 2001-09-12 | Internal combustion engine with two turbochargers with compressor bypass and method thereof |
Country Status (1)
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DE (1) | DE10144663B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007046655A1 (en) * | 2007-09-28 | 2009-04-09 | Audi Ag | Internal-combustion engine operating method for motor vehicle, involves supplying exhaust gases through valve of turbocharger, and temporarily closing exhaust gas-bypass during change-over of speed of engine from low to high engine-speed |
DE102010033680A1 (en) | 2010-08-06 | 2012-02-09 | Voith Patent Gmbh | Method for controlling turbocharging of petrol engine, involves supplying engine with compressed fresh air from air compressors in rotational speed range of engine, where compressors are driven by respective low and high pressure turbines |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10023022A1 (en) * | 2000-05-11 | 2001-11-22 | Borgwarner Inc | Supercharged internal combustion engine |
DE10235531A1 (en) * | 2002-08-03 | 2004-02-19 | Daimlerchrysler Ag | Method for charge pressure control of an internal combustion engine |
JP3918717B2 (en) * | 2002-11-13 | 2007-05-23 | いすゞ自動車株式会社 | Engine supercharger |
GB0320986D0 (en) * | 2003-09-08 | 2003-10-08 | Ricardo Uk Ltd | Automotive turbo charger systems |
JP4337489B2 (en) * | 2003-09-26 | 2009-09-30 | トヨタ自動車株式会社 | Supercharger |
DE102004009794A1 (en) | 2004-02-28 | 2005-09-22 | Daimlerchrysler Ag | Internal combustion engine with two exhaust gas turbochargers |
JP2006097684A (en) * | 2004-09-27 | 2006-04-13 | Borgwarner Inc | Multi-stage turbo supercharger using vtg turbine stage |
US20060137342A1 (en) * | 2004-12-14 | 2006-06-29 | Borgwarner Inc. | Turbine flow regulating valve system |
CN101067397A (en) * | 2004-12-14 | 2007-11-07 | 博格华纳公司 | Turbine flow regulating valve system |
US20060137343A1 (en) | 2004-12-14 | 2006-06-29 | Borgwarner Inc. | Turbine flow regulating valve system |
DE102005008657A1 (en) | 2005-02-25 | 2006-08-31 | Daimlerchrysler Ag | Internal combustion engine or Otto-engine braking method for vehicle, involves providing fixed geometry with constant turbine entrance cross section for each of two exhaust gas turbines |
DE102005046507A1 (en) | 2005-09-29 | 2007-04-05 | Daimlerchrysler Ag | Internal combustion engine comprises exhaust gas turbochargers each having a turbine with a bypass having an outflow valve integrated in the turbine housing |
US7426831B2 (en) | 2005-10-06 | 2008-09-23 | Borgwarner Inc. | Turbo charging system |
FR2901844B1 (en) * | 2006-06-01 | 2008-09-12 | Renault Sas | COMBUSTION ENGINE BITURBO FLOOR |
FR2901845B1 (en) * | 2006-06-01 | 2012-12-14 | Renault Sas | PRESSURE REGULATION METHOD IN AN ENGINE INLET COLLECTOR |
FR2910542A3 (en) | 2006-12-22 | 2008-06-27 | Renault Sas | Intake manifold's boost pressure regulating method for internal combustion engine, involves controlling units to regulate exhaust gas pressure in upstream of turbine in below value of maximum pressure authorized in upstream of turbine |
DE102007036931A1 (en) | 2007-08-04 | 2009-02-05 | Daimler Ag | Internal combustion engine e.g. petrol engine, for e.g. commercial motor vehicle, has bypass branching from exhaust gas pipeline upstream to exhaust gas turbine of engine-proximity exhaust gas turbocharger |
JP5051301B2 (en) * | 2009-07-16 | 2012-10-17 | トヨタ自動車株式会社 | Control valve abnormality determination device for internal combustion engine |
DE102010037368A1 (en) * | 2010-09-07 | 2012-03-08 | Ford Global Technologies, Llc. | Method for controlling a turbocharger arrangement of an internal combustion engine and turbocharger arrangement |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007046655A1 (en) * | 2007-09-28 | 2009-04-09 | Audi Ag | Internal-combustion engine operating method for motor vehicle, involves supplying exhaust gases through valve of turbocharger, and temporarily closing exhaust gas-bypass during change-over of speed of engine from low to high engine-speed |
DE102007046655B4 (en) | 2007-09-28 | 2019-01-17 | Audi Ag | Method for operating an internal combustion engine |
DE102010033680A1 (en) | 2010-08-06 | 2012-02-09 | Voith Patent Gmbh | Method for controlling turbocharging of petrol engine, involves supplying engine with compressed fresh air from air compressors in rotational speed range of engine, where compressors are driven by respective low and high pressure turbines |
Also Published As
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
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Effective date: 20150401 |