DE102012215348A1 - Liquid-cooled lifting cylinder combustion engine for motor car, has tubular thermo-electric module that is arranged between cylinder and coolant channel which is set to surround the aluminum crankcase - Google Patents

Liquid-cooled lifting cylinder combustion engine for motor car, has tubular thermo-electric module that is arranged between cylinder and coolant channel which is set to surround the aluminum crankcase Download PDF

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Publication number
DE102012215348A1
DE102012215348A1 DE201210215348 DE102012215348A DE102012215348A1 DE 102012215348 A1 DE102012215348 A1 DE 102012215348A1 DE 201210215348 DE201210215348 DE 201210215348 DE 102012215348 A DE102012215348 A DE 102012215348A DE 102012215348 A1 DE102012215348 A1 DE 102012215348A1
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Prior art keywords
cylinder
combustion engine
coolant channel
liquid
electric module
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DE201210215348
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German (de)
Inventor
Ivo Daniel Weese
Boris MAZAR
Carsten Spengler
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE201210215348 priority Critical patent/DE102012215348A1/en
Publication of DE102012215348A1 publication Critical patent/DE102012215348A1/en
Withdrawn legal-status Critical Current

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    • 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
    • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The liquid-cooled lifting cylinder combustion engine (1) has a cylinder (2) that is arranged in aluminum crankcase (3) which is surrounded partially by a coolant channel (4). The coolant is passed into the coolant channel. A tubular thermo-electric module (5) is arranged between the cylinder and the coolant channel. The tubular thermo-electric module is set to enclose the cylinder at predetermined degrees. The cylinder is provided with a liner (6).

Description

Die Erfindung betrifft eine flüssigkeitsgekühlte Brennkraftmaschine mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1.The invention relates to a liquid-cooled internal combustion engine having the features of the preamble of patent claim 1.

Vielfach werden Brennkraftmaschinen mit einem Zylinder-Kurbelgehäuse aus Grauguss dargestellt. Beispielsweise wurde im Frühjahr 2009 im Audi TT RS eine neue 5-Zylinder-Reihenbrennkraftmaschine vorgestellt mit einem GJV-Zylinder-Kurbelgehäuse (Vermiculargraphitguss). Die unterschiedliche Wichtung der Anforderungen an ein Zylinder-Kurbelgehäuse führt zur Wahl von unterschiedlichen Materialien. Im Bereich der Otto-Brennkraftmaschinen wurden bisher vornehmlich Aluminiumwerkstoffe bei Saugbrennkraftmaschinen und Gusseisen mit Lamellengraphit bei Turbobrennkraftmaschinen verwendet. Bei Dieselbrennkraftmaschinen ging dieser Trend in den letzten Jahren aufgrund immer höher werdender Belastungen einerseits hin zu hochfesten Materialien wie GJV oder andererseits aus Gewichtsgründen hin zu Aluminium.In many cases, internal combustion engines are shown with a cylinder crankcase made of gray cast iron. In the spring of 2009, for example, a new 5-cylinder in-line engine was presented in the Audi TT RS with a GJV cylinder crankcase (vermicular graphite cast iron). The different weighting of the requirements for a cylinder crankcase leads to the choice of different materials. In the field of Otto internal combustion engines so far mainly aluminum materials were used in suction internal combustion engines and cast iron with lamellar graphite in turbo internal combustion engines. In the case of diesel internal combustion engines, this trend has in recent years been due to increasing loads on the one hand towards high-strength materials such as GJV or on the other hand for reasons of weight towards aluminum.

Um, wie bereits ausgeführt, Gewicht zu sparen, werden vornehmlich Saugbrennkraftmaschinen mit Otto-Betrieb mit Zylinder-Kurbelgehäusen aus Aluminium dargestellt.In order, as already stated, to save weight, primarily suction internal combustion engines are shown with Otto operation with cylinder crankcases made of aluminum.

Dies führt in nachteiliger Weise jedoch zu innermotorischen Reibungsverlusten während der Warmlaufphase und damit zu einem ungenutzten CO2-Potential. Weiter wird der Verschleiß der Brennkraftmaschine erhöht. Aufgrund der guten Wärmeleitung von Aluminium führt dieses zu Kondensation und damit zur Ölverdünnung mit Kraftstoff und Verbrennungsrückständen an den kalten Zylinderwänden.However, this leads disadvantageously to internal engine friction losses during the warm-up phase and thus to an unused CO 2 potential. Further, the wear of the internal combustion engine is increased. Due to the good heat conduction of aluminum, this leads to condensation and thus oil thinning with fuel and combustion residues on the cold cylinder walls.

Weiter ist die Verwendung von Thermoelektrischen Modulen zur Energiegewinnung für Kraftfahrzeuge, bzw. zur Temperaturregelung beispielsweise aus der europäischen Patentanmeldung EP 1 500 808 A1 bekannt. Weiter ist die Verwendung von rohrförmigen Thermoelektrischen Modulen beispielsweise aus der deutschen Offenlegungsschrift DE 10 2008 022 802 A1 bekannt.Next is the use of thermoelectric modules for energy production for motor vehicles, or for temperature control, for example, from the European patent application EP 1 500 808 A1 known. Next is the use of tubular thermoelectric modules, for example, from the German patent application DE 10 2008 022 802 A1 known.

Aufgabe der vorliegenden Erfindung ist es, eine Maßnahme aufzuzeigen, wie insbesondere der Verschleiß von einem Aluminium-Kurbelgehäuse verringert werden kann.Object of the present invention is to show a measure, in particular, the wear of an aluminum crankcase can be reduced.

Diese Aufgabe wird durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst. Die erfindungsgemäße Ausgestaltung der Brennkraftmaschine führt zu folgenden Vorteilen während eines Warmlaufs:

  • – Es besteht die Möglichkeit vor dem Start der Brennkraftmaschine die Zylinder-Innenwand aufzuheizen und damit die Reibungsverluste zu minimieren;
  • – Dies führt in vorteilhafter Weise zu einem reduzierten Kraftstoffverbrauch während der Warmlaufphase;
  • – Weiter führt es zu einer Verbesserung der Schmiermittelqualität durch die Reduzierung von Kraftstoffkondensat;
  • – Die Brennkraftmaschinenwarmlaufbeschleunigung wird deutlich erhöht;
  • – Insgesamt führt die erfindungsgemäße Maßnahme zu einer Verbesserung der Emissionierung (Verringerung der HC-Emissionen).
This object is achieved by the feature in the characterizing part of patent claim 1. The inventive design of the internal combustion engine leads to the following advantages during a warm-up:
  • - It is possible to heat the cylinder inner wall before the start of the engine and thus to minimize the friction losses;
  • - This leads advantageously to a reduced fuel consumption during the warm-up phase;
  • - It also leads to an improvement in the quality of the lubricant by reducing fuel condensate;
  • - The engine warm-up acceleration is significantly increased;
  • - Overall, the measure according to the invention leads to an improvement of the emission (reduction of HC emissions).

Weiter führt die erfindungsgemäße Ausgestaltung im aufgewärmten Betrieb der Brennkraftmaschine zu folgenden Vorteilen:

  • – Es ist eine aktive Temperaturbeeinflussung der Zylinderwand in verschiedenen Betriebszuständen der Brennkraftmaschine möglich;
  • – Weiter ist der Betrieb als thermoelektrischer Generator möglich, d. h. die Wandlung der thermischen Energie in elektrische Energie. Dadurch kann der konventionelle Generator (Lichtmaschine) entlastet und wiederum Kraftstoff eingespart werden.
Furthermore, the embodiment according to the invention in the warmed up operation of the internal combustion engine leads to the following advantages:
  • - It is an active temperature control of the cylinder wall in different operating conditions of the internal combustion engine possible;
  • - Further, the operation is possible as a thermoelectric generator, ie the conversion of thermal energy into electrical energy. As a result, the conventional generator (alternator) can be relieved and again fuel can be saved.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.Advantageous developments of the invention are described in the subclaims.

So ist das thermoelektrische Modul gemäß Patentanspruch 2 vorzugsweise rohrförmig und umschließt den Zylinder von 30° bis zu 360°.Thus, the thermoelectric module according to claim 2 is preferably tubular and encloses the cylinder from 30 ° to 360 °.

Für den Fall, dass der Zylinder von einer Zylinderlaufbuchse gebildet wird ist das thermoelektrische Modul gemäß Patentanspruch 3 bevorzugt zwischen der Zylinderlaufbuchse und dem Kühlmittelkanal angeordnet.In the event that the cylinder is formed by a cylinder liner, the thermoelectric module according to claim 3 is preferably arranged between the cylinder liner and the coolant channel.

Im Folgenden ist die Erfindung anhand einer schematischen Zeichnung für ein Ausführungsbeispiel in einer einzigen Figur näher erläutert.In the following the invention with reference to a schematic drawing for an embodiment in a single figure is explained in more detail.

1 zeigt schematisch einen Schnitt durch ein Kurbelgehäuse einer erfindungsgemäßen Brennkraftmaschine. 1 schematically shows a section through a crankcase of an internal combustion engine according to the invention.

1 zeigt schematisch einen Schnitt durch ein Kurbelgehäuse 3 einer erfindungsgemäßen Hubkolben-Brennkraftmaschine 1. Eine Schnittfläche ist schraffiert dargestellt. In einem Zylinder 2 ist hubbeweglich ein Kolben 8 an geordnet, der von einem Kurbeltrieb 9 antreibbar ist. Der Zylinder 2 wird auf der dem Kurbeltrieb 9 abgewandten Seite von einem ebenfalls schraffiert dargestellten Zylinderkopf 7 abgeschlossen. In dem vorliegenden Ausführungsbeispiel wird der Zylinder 2 von einer Zylinderlaufbuchse 6 gebildet, die in einer weiteren Ausführungsform auch entfallen kann. Bevorzugt ist das Kurbelgehäuse 3 aus einem Leichtmetall wie beispielsweise Aluminium, jedoch kann es auch aus anderen Werkstoffen bestehen. Beidseitig des Zylinders 2 ist jeweils ein Kühlmittelkanal 4 im Kurbelgehäuse 3 zur Kühlung des Zylinders 2 angeordnet. 1 schematically shows a section through a crankcase 3 a reciprocating internal combustion engine according to the invention 1 , A cut surface is hatched. In a cylinder 2 is liftable a piston 8th arranged on, that of a crank mechanism 9 is drivable. The cylinder 2 gets on the crank drive 9 side facing away from a likewise hatched cylinder head 7 completed. In the present embodiment, the cylinder 2 from one Cylinder liner 6 formed, which may also be omitted in a further embodiment. The crankcase is preferred 3 made of a light metal such as aluminum, but it may also consist of other materials. Both sides of the cylinder 2 each is a coolant channel 4 in the crankcase 3 for cooling the cylinder 2 arranged.

Erfindungsgemäß ist zwischen dem Zylinder 2 und dem Kühlmittelkanal 4 ein thermoelektrisches Modul 5 angeordnet. Bevorzugt ist das thermoelektrische Modul 5 rohrförmig und umschließt den Zylinder 2 zwischen 30° bis zu 360°. Im vorliegenden Ausführungsbeispiel ist der Zylinder 2 von einer Zylinderlaufbuchse 6 gebildet und das thermoelektrische Modul 5 ist zwischen der Zylinderlaufbuchse 6 und dem Kühlmittelkanal 4 angeordnet. Unter einem Thermoelektrischen Modul 5 wird die elektrische und mechanische Verschaltung mehrerer Thermoelektrischer Halbleiterelemente verstanden.According to the invention is between the cylinder 2 and the coolant channel 4 a thermoelectric module 5 arranged. The thermoelectric module is preferred 5 tubular and encloses the cylinder 2 between 30 ° to 360 °. In the present embodiment, the cylinder 2 from a cylinder liner 6 formed and the thermoelectric module 5 is between the cylinder liner 6 and the coolant channel 4 arranged. Under a thermoelectric module 5 is understood the electrical and mechanical interconnection of several thermoelectric semiconductor elements.

Aufgrund der erfindungsgemäßen Ausgestaltung der Hubkolben-Brennkraftmaschine 1 ergeben sich nochmals folgende Vorteile:
Während eines Warmlaufs der Brennkraftmaschine:

  • – Es besteht die Möglichkeit vor dem Start der Brennkraftmaschine die Zylinder-Innenwand aufzuheizen und damit die Reibungsverluste zu minimieren;
  • – Dies führt in vorteilhafter Weise zu einem reduzierten Kraftstoffverbrauch während der Warmlaufphase;
  • – Weiter führt es zu einer Verbesserung der Schmiermittelqualität durch die Reduzierung von Kraftstoffkondensat;
  • – Die Brennkraftmaschinenwarmlaufbeschleunigung wird deutlich erhöht;
  • – Insgesamt führt die erfindungsgemäße Maßnahme zu einer Verbesserung der Emissionierung (Verringerung der HC-Emissionen).
Due to the inventive design of the reciprocating internal combustion engine 1 Again, the following advantages result:
During a warm-up of the internal combustion engine:
  • - It is possible to heat the cylinder inner wall before the start of the engine and thus to minimize the friction losses;
  • - This leads advantageously to a reduced fuel consumption during the warm-up phase;
  • - It also leads to an improvement in the quality of the lubricant by reducing fuel condensate;
  • - The engine warm-up acceleration is significantly increased;
  • - Overall, the measure according to the invention leads to an improvement of the emission (reduction of HC emissions).

Im aufgewärmten Betrieb der Brennkraftmaschine:

  • – Es ist eine aktive Temperaturbeeinflussung der Zylinderwand in verschiedenen Betriebszuständen der Brennkraftmaschine möglich;
  • – Weiter ist der Betrieb als thermoelektrischer Generator möglich, d. h. die Wandlung der thermischen Energie in elektrische Energie. Dadurch kann der konventionelle Generator (Lichtmaschine) entlastet und wiederum Kraftstoff eingespart werden.
In the warmed up operation of the internal combustion engine:
  • - It is an active temperature control of the cylinder wall in different operating conditions of the internal combustion engine possible;
  • - Further, the operation is possible as a thermoelectric generator, ie the conversion of thermal energy into electrical energy. As a result, the conventional generator (alternator) can be relieved and again fuel can be saved.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Hubkolben-BrennkraftmaschineReciprocating internal combustion engine
22
Zylindercylinder
33
Kurbelgehäusecrankcase
44
KühlmittelkanalCoolant channel
55
thermoelektrisches Modulthermoelectric module
66
ZylinderlaufbuchseCylinder liner
77
Zylinderkopfcylinder head
88th
Kolbenpiston
99
Kurbeltriebcrankshaft

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

  • EP 1500808 A1 [0005] EP 1500808 A1 [0005]
  • DE 102008022802 A1 [0005] DE 102008022802 A1 [0005]

Claims (3)

Flüssigkeitsgekühlte Brennkraftmaschine (1), mit zumindest einem Zylinder (2) in einem Kurbelgehäuse (3), der zumindest abschnittsweise von einem mit einem Kühlmittel durchströmbaren Kühlmittelkanal (4) umgeben ist, dadurch gekennzeichnet, dass zwischen dem Zylinder (2) und dem Kühlmittelkanal (4) ein thermoelektrisches Modul (5) angeordnet ist.Liquid-cooled internal combustion engine ( 1 ), with at least one cylinder ( 2 ) in a crankcase ( 3 ), which at least partially by a coolant through which a coolant channel ( 4 ), characterized in that between the cylinder ( 2 ) and the coolant channel ( 4 ) a thermoelectric module ( 5 ) is arranged. Flüssigkeitsgekühlte Brennkraftmaschine nach Patentanspruch 1, dadurch gekennzeichnet, dass das thermoelektrische Modul (5) rohrförmig ist und den Zylinder (2) von 30° bis zu 360° umschließt.Liquid-cooled internal combustion engine according to claim 1, characterized in that the thermoelectric module ( 5 ) is tubular and the cylinder ( 2 ) from 30 ° to 360 °. Flüssigkeitsgekühlte Brennkraftmaschine nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass der Zylinder (2) von einer Zylinderlaufbuchse (6) gebildet und das thermoelektrische Modul (5) zwischen der Zylinderlaufbuchse (6) und dem Kühlmittelkanal (4) angeordnet ist.Liquid-cooled internal combustion engine according to claim 1 or 2, characterized in that the cylinder ( 2 ) of a cylinder liner ( 6 ) and the thermoelectric module ( 5 ) between the cylinder liner ( 6 ) and the coolant channel ( 4 ) is arranged.
DE201210215348 2012-08-29 2012-08-29 Liquid-cooled lifting cylinder combustion engine for motor car, has tubular thermo-electric module that is arranged between cylinder and coolant channel which is set to surround the aluminum crankcase Withdrawn DE102012215348A1 (en)

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DE201210215348 DE102012215348A1 (en) 2012-08-29 2012-08-29 Liquid-cooled lifting cylinder combustion engine for motor car, has tubular thermo-electric module that is arranged between cylinder and coolant channel which is set to surround the aluminum crankcase

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63111269A (en) * 1986-10-29 1988-05-16 Mazda Motor Corp Exhaust heat utilizing device for engine
US6029620A (en) * 1998-07-29 2000-02-29 Zinke; Robert Dan Thermoelectric engine block
EP1500808A1 (en) 2003-07-24 2005-01-26 Ford Global Technologies, LLC, A subsidary of Ford Motor Company System and method for controlling the temperature of an internal combustion engine exhaust gas temperature
DE102007030607A1 (en) * 2006-09-13 2008-03-27 Caterpillar Inc., Peoria Thermoelectric system
EP2098713A1 (en) * 2008-03-06 2009-09-09 Iveco Motorenforschung AG Thermoelectric heat recuperation system
DE102008022802A1 (en) 2008-05-08 2009-11-19 Benteler Automobiltechnik Gmbh Device for generating electrical power from the waste heat of a motor vehicle internal combustion engine
DE102009017311A1 (en) * 2009-04-11 2010-10-14 Mag Europe Gmbh Thermoelectric device for producing electrical energy from heat produced by internal combustion engine of motor vehicle, has generator arranged such that electrical energy is generated from heat guided from inner wall towards outer wall
DE102009002596A1 (en) * 2009-04-23 2010-11-04 Ford Global Technologies, LLC, Dearborn Internal combustion engine with thermoelectric generator
US7878283B2 (en) * 2007-02-03 2011-02-01 Bayerische Motoren Werke Aktiengesellschaft Vehicle having a thermoelectric generator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63111269A (en) * 1986-10-29 1988-05-16 Mazda Motor Corp Exhaust heat utilizing device for engine
US6029620A (en) * 1998-07-29 2000-02-29 Zinke; Robert Dan Thermoelectric engine block
EP1500808A1 (en) 2003-07-24 2005-01-26 Ford Global Technologies, LLC, A subsidary of Ford Motor Company System and method for controlling the temperature of an internal combustion engine exhaust gas temperature
DE102007030607A1 (en) * 2006-09-13 2008-03-27 Caterpillar Inc., Peoria Thermoelectric system
US7878283B2 (en) * 2007-02-03 2011-02-01 Bayerische Motoren Werke Aktiengesellschaft Vehicle having a thermoelectric generator
EP2098713A1 (en) * 2008-03-06 2009-09-09 Iveco Motorenforschung AG Thermoelectric heat recuperation system
DE102008022802A1 (en) 2008-05-08 2009-11-19 Benteler Automobiltechnik Gmbh Device for generating electrical power from the waste heat of a motor vehicle internal combustion engine
DE102009017311A1 (en) * 2009-04-11 2010-10-14 Mag Europe Gmbh Thermoelectric device for producing electrical energy from heat produced by internal combustion engine of motor vehicle, has generator arranged such that electrical energy is generated from heat guided from inner wall towards outer wall
DE102009002596A1 (en) * 2009-04-23 2010-11-04 Ford Global Technologies, LLC, Dearborn Internal combustion engine with thermoelectric generator

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