DE19954690A1 - Air intake for an IC motor has a cooling unit for the air drawn in fitted with Peltier elements as a compact system easily fitted to the air intake installation - Google Patents

Air intake for an IC motor has a cooling unit for the air drawn in fitted with Peltier elements as a compact system easily fitted to the air intake installation

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Publication number
DE19954690A1
DE19954690A1 DE19954690A DE19954690A DE19954690A1 DE 19954690 A1 DE19954690 A1 DE 19954690A1 DE 19954690 A DE19954690 A DE 19954690A DE 19954690 A DE19954690 A DE 19954690A DE 19954690 A1 DE19954690 A1 DE 19954690A1
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DE
Germany
Prior art keywords
air
peltier elements
intake air
air intake
fitted
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.)
Ceased
Application number
DE19954690A
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German (de)
Inventor
Klaus Kobold
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Priority to DE19954690A priority Critical patent/DE19954690A1/en
Publication of DE19954690A1 publication Critical patent/DE19954690A1/en
Ceased 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0481—Intake air cooling by means others than heat exchangers, e.g. by rotating drum regenerators, cooling by expansion or by electrical means
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0456—Air cooled heat exchangers
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The air intake system, for an internal combustion motor, has Peltier elements to cool the air drawn in, at an air cooling unit (18). The cold sides of the Peltier elements form closed longitudinal channels within the air cooler (18), for the air to be cooled to flow through. Heat from the Peltier elements is extracted outwards. The intake air cooling unit (18) is between the air filter (16) and the air vol. meter (20) at the motor.

Description

Die Erfindung geht aus von einer Anordnung zur Kühlung der Ansaugluft für eine Brennkraftmaschine gemäß den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to an arrangement for cooling the intake air for a Internal combustion engine according to the features of the preamble of claim 1.

Insbesondere bei aufgeladenen Brennkraftmaschinen, bei denen die kinetische Energie des Abgasstromes mit Hilfe eines Abgasturboladers zum Zuführen der Verbrennungsluft ausgenutzt wird, ist eine Kühlung der Ansaugluft erforderlich. Dazu werden wassergekühlte Ladeluftkühler (siehe z. B. DE 42 02 077 A1) oder luftgekühlte Ladeluftkühler (siehe z. B. DE 196 04 738 A1) eingesetzt. Derartige Ladeluftkühler beanspruchen jedoch einen entsprechenden Bauraum und benötigen zusätzliche periphere Bauteile, wie z. B. einen eigenen Kühlwasserkreislauf.Especially with supercharged internal combustion engines, where the kinetic energy the exhaust gas flow using an exhaust gas turbocharger for supplying the combustion air cooling of the intake air is required. To do this water-cooled charge air cooler (see e.g. DE 42 02 077 A1) or air-cooled Charge air cooler (see e.g. DE 196 04 738 A1). Such intercoolers however, require a corresponding space and need additional peripheral components such as B. its own cooling water circuit.

Aufgabe der Erfindung ist es daher, eine Kühleinrichtung für die Ansaugluft einer Brennkraftmaschine zu entwickeln, die platzsparend ist und auf einfache Art und Weise in den Ansaugtrakt der Brennkraftmaschine integriert werden kann.The object of the invention is therefore to provide a cooling device for the intake air To develop an internal combustion engine that is space-saving and simple in the intake tract of the internal combustion engine can be integrated.

Die Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.The object is achieved by the characterizing part of claim 1 specified features solved.

Durch den Einsatz von Peltier-Elementen kann wirkungsvoll und auf einfache Art und Weise die Ansaugluft für die Brennkraftmaschine gekühlt werden. Die Peltier-Elemente können in den Ansaugtrakt der Brennkraftmaschine integriert werden; sie benötigen wenig Platz und können auf einfache Art und Weise elektrisch angesteuert werden.By using Peltier elements can be effective and simple and Way, the intake air for the internal combustion engine are cooled. The Peltier elements can be integrated into the intake tract of the internal combustion engine; you need little space and can be controlled electrically in a simple manner.

In den Unteransprüchen sind weitere vorteilhafte Ausgestaltungen und Verbesserungen der erfindungsgemäßen Anordnung zur Kühlung der Ansaugluft für eine Brennkraftmaschine enthalten.Further advantageous refinements and improvements are in the subclaims the inventive arrangement for cooling the intake air for a Internal combustion engine included.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend näher erläutert.An embodiment of the invention is shown in the drawing and will explained in more detail below.

Fig. 1 zeigt schematisch den Ansaugtrakt einer Brennkraftmaschine und Fig. 2 eine vergrößerte Schnittdarstellung durch einen Ansaugluftkühler der Brennkraftmaschine. Fig. 1 shows schematically the intake tract of an internal combustion engine and Fig. 2 is an enlarged sectional view through an intake air cooler of the internal combustion engine.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die Brennkraftmaschine 10 weist einen Ansaugtrakt 12 auf, der in Strömungsrichtung der Ansaugluft gesehen folgende Bauteile aufweist:
Einen im Luftfiltergehäuse 14 angeordneten Luftfilter 16, einen noch näher zu beschreibenden Ansaugluftkühler 18, einen Luftmengenmesser 20, eine Drosselklappen- Einrichtung 21, eine Einrichtung 22 zur Gemischbildung, sowie eine Verteilereinrichtung 24, die das Brennstoff-Luftgemisch zu den einzelnen Zylindern der Brennkraftmaschine 10 führt.The internal combustion engine 10 has an intake tract 12 which , when viewed in the direction of flow of the intake air, has the following components:
An air filter 16 arranged in the air filter housing 14 , an intake air cooler 18 to be described in more detail, an air flow meter 20 , a throttle valve device 21 , a device 22 for mixture formation, and a distributor device 24 which leads the fuel / air mixture to the individual cylinders of the internal combustion engine 10 .

Der mit elektrischen Anschlüssen (nicht dargestellt) versehene Ansaugluftkühler 18 und der Luftmengenmesser 20 sind über entsprechende Steuerleitungen mit einem Steuergerät 26 verbunden. Im Ansaugluftkühler 18 sind exemplarisch acht Peltier- Elemente 28 angeordnet. Jedes Peltier-Element besteht aus zwei verschiedenen Metallplatten-Paarungen 28a, 28b (z. B. Kupfer-Konstantan), die unterschiedliche Stellungen in der elektrochemischen Spannungsreihe aufweisen. Wie beim Peltier-Effekt bekannt ist, entsteht in Umkehrung zum Seebeck-Effekt beim Anlegen einer Spannung an den beiden Platten 28a, 28b ein Temperaturunterschied, wobei im folgenden die warme Seite den Platten 28a und die kalte Seite den Platten 28b zugeordnet ist. Die acht im Ansaugluftkühler 18 angeordneten Peltier-Elemente 28 werden entsprechend miteinander verschaltet und sind dabei so angeordnet, daß jeweils vier geschlossene Längskanäle 28 entstehen. Die Längskanäle werden seitlich von den kalten Platten 28b begrenzt und nach oben und unten hin durch entsprechende Abdeckungen 29 abgeschlossen.The intake air cooler 18 , which is provided with electrical connections (not shown), and the air flow meter 20 are connected to a control unit 26 via corresponding control lines. As an example, eight Peltier elements 28 are arranged in the intake air cooler 18 . Each Peltier element consists of two different metal plate pairs 28 a, 28 b (e.g. copper constantan), which have different positions in the electrochemical series. As is known for the Peltier effect, a reversal of the Seebeck effect occurs when a voltage is applied to the two plates 28 a, 28 b, with the warm side being assigned to the plates 28 a and the cold side to the plates 28 b is. The eight Peltier elements 28 arranged in the intake air cooler 18 are interconnected accordingly and are arranged in such a way that four closed longitudinal channels 28 each arise. The longitudinal channels are laterally delimited by the cold plates 28 b and closed at the top and bottom by appropriate covers 29 .

Zwischen den warmen Platten 28a der Peltier-Elemente 28 entstehen nach unten und nach oben hin offene Querkanäle 32, die seitlich von den warmen Platten 28a der Peltier- Elemente 28 begrenzt werden. Das Gehäuse des Ansaugluftkühlers 18 weist auf seiner unteren Seite Eintrittsöffnungen 34 für die Umgebungsluft und auf seiner Oberseite Austrittsöffnungen 36 für die zwischen den Querkanälen 32 entlangströmende und sich erwärmende Umgebungsluft auf.Between the warm plates 28 a of the Peltier elements 28 open transverse channels 32 open upwards and downwards which are laterally delimited by the warm plates 28 a of the Peltier elements 28 . The housing of the intake air cooler 18 has inlet openings 34 for the ambient air on its lower side and outlet openings 36 for the ambient air flowing between the transverse channels 32 and warming on its upper side.

Die Kühlung der Ansaugluft erfolgt auf folgende Art und Weise: Aufgrund des sich in den Zylindern ausbildenden Unterdrucks während des Ansaugtakts wird die Verbrennungsluft der als Saugmotor ausgebildeten Brennkraftmaschine über den Luftfilter 16 zum Ansaugluftkühler 18 geführt. Die mit einer bestimmten Temperatur in den Ansaugluftkühler 18 gelangende Verbrennungsluft strömt durch die von den kalten Platten 28b der Peltier-Elemente 28 begrenzten Längskanäle 30 und wird beispielsweise über eine im Steuergerät 26 hinterlegte Kennlinie in Abhängigkeit von verschiedenen Betriebsparametern heruntergekühlt. Mit Hilfe des sich an den Ansaugluftkühlers 18 anschließenden Luftmassenmessers 20 wird die der Verbrennungskraftmaschine tatsächlich zugeführte Luftmasse m bestimmt, bevor sie über die Drosselklappe 21 mit dem über die Einrichtung 22 zugeführten Kraftstoff und über die Verteilereinrichtung 24 den einzelnen Zylindern zugeführt wird.The intake air is cooled in the following manner: Due to the negative pressure that forms in the cylinders during the intake stroke, the combustion air of the internal combustion engine designed as a suction motor is guided to the intake air cooler 18 via the air filter 16 . The combustion air entering the intake air cooler 18 at a certain temperature flows through the longitudinal channels 30 delimited by the cold plates 28 b of the Peltier elements 28 and is cooled down, for example, via a characteristic curve stored in the control unit 26 , depending on various operating parameters. With the aid of the air mass meter 20 adjoining the intake air cooler 18 , the air mass m actually supplied to the internal combustion engine is determined before it is supplied to the individual cylinders via the throttle valve 21 with the fuel supplied via the device 22 and via the distributor device 24 .

Insbesondere bei Brennkraftmaschinen mit einem Abgasturbolader, bei denen die Verbrennungsluft aufgrund der engen Anbindung an die Abgasturbine stark erwärmt wird, kann die vorbeschriebene Anordnung zur Kühlung der Ladeluft wirkungsvoll eingesetzt werden. Die Ladeluftkühlung reduziert die thermische Belastung des Motors, die Abgastemperatur und damit auch die NOx-Emissionen und den Kraftstoffverbrauch. Außerdem erhöht sie beim Ottomotor die Klopffestigkeit.Especially in internal combustion engines with an exhaust gas turbocharger, in which the Combustion air is strongly heated due to the close connection to the exhaust gas turbine, can use the arrangement described above for cooling the charge air effectively become. The charge air cooling reduces the thermal load on the engine Exhaust gas temperature and thus also NOx emissions and fuel consumption. It also increases knock resistance in gasoline engines.

Durch eine Umpolung der Peltier-Elemente kann die Ansaugluft in vorteilhafter Weise bei einem Kaltstart des Motors vorgewärmt werden.By reversing the polarity of the Peltier elements, the intake air can advantageously be preheated when the engine is cold started.

Claims (5)

1. Anordnung zur Kühlung der Ansaugluft für eine Brennkraftmaschine mit einer im Ansaugtrakt angeordneten Kühleinrichtung, dadurch gekennzeichnet, daß die Kühlung der Ansaugluft durch Peltier-Elemente (28) erfolgt.1. Arrangement for cooling the intake air for an internal combustion engine with a cooling device arranged in the intake tract, characterized in that the intake air is cooled by Peltier elements ( 28 ). 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Peltier-Elemente (28) in einem Ansaugluftkühler (18) angeordnet sind.2. Arrangement according to claim 1, characterized in that the Peltier elements ( 28 ) are arranged in an intake air cooler ( 18 ). 3. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die kalten Seiten (28b) der Peltier-Elemente (28) innerhalb des Ansaugluftkühlers (18) geschlossene Längskanäle (30) bilden, durch die die zu kühlende Ansaugluft strömt.3. Arrangement according to claim 1 or 2, characterized in that the cold sides (28b) of the Peltier elements ( 28 ) within the intake air cooler ( 18 ) form closed longitudinal channels ( 30 ) through which the intake air to be cooled flows. 4. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die warmen Seiten (28a) der Peltier-Elemente (28) innerhalb des Ansaugluftkühler (18) offene Querkanäle (32) bilden, durch die über im Ansaugluftkühler (18) angeordnete Öffnungen (34, 36) Umgebungsluft hindurchströmt und damit die Wärme von den warmen Seiten (28a) der Peltier-Elemente (28) nach außen abführt.4. Arrangement according to one of the preceding claims, characterized in that the warm sides (28a) of the Peltier elements ( 28 ) within the intake air cooler ( 18 ) form open transverse channels ( 32 ) through which openings arranged in the intake air cooler ( 18 ) ( 18 ) 34 , 36 ) ambient air flows through and thus removes the heat from the warm sides (28a) of the Peltier elements ( 28 ) to the outside. 5. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Ansaugluftkühler (18) zwischen einem Luftfilter (16) und einem Luftmengenmesser (20) der Brennkraftmaschine angeordnet ist.5. Arrangement according to one of the preceding claims, characterized in that the intake air cooler ( 18 ) between an air filter ( 16 ) and an air flow meter ( 20 ) of the internal combustion engine is arranged.
DE19954690A 1999-11-13 1999-11-13 Air intake for an IC motor has a cooling unit for the air drawn in fitted with Peltier elements as a compact system easily fitted to the air intake installation Ceased DE19954690A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19954690A DE19954690A1 (en) 1999-11-13 1999-11-13 Air intake for an IC motor has a cooling unit for the air drawn in fitted with Peltier elements as a compact system easily fitted to the air intake installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19954690A DE19954690A1 (en) 1999-11-13 1999-11-13 Air intake for an IC motor has a cooling unit for the air drawn in fitted with Peltier elements as a compact system easily fitted to the air intake installation

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DE19954690A1 true DE19954690A1 (en) 2001-05-17

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7011079B2 (en) * 2003-12-24 2006-03-14 Hyundai Motor Company Intake apparatus for engine of vehicle
DE102008036713A1 (en) 2008-08-07 2010-02-11 Technische Universität Carolo-Wilhelmina Zu Braunschweig Method for separating two objects bonded together via at least one adhesive layer
DE102008051843A1 (en) * 2008-10-17 2010-04-29 Mahle International Gmbh Internal-combustion engine for motor vehicle, has thermoelectric transducer comprising set of thermoelectric elements that are coupled with charged fresh air in heat-transferring manner
US20150214458A1 (en) * 2014-01-27 2015-07-30 General Electric Company Thermoelectric generator system for intercooler coupled to turbocharger
CN106194399A (en) * 2014-11-20 2016-12-07 现代自动车株式会社 The inlet gas cooling equipment of vehicle
DE102015119851A1 (en) * 2015-11-17 2017-05-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal combustion engine
US20190186347A1 (en) * 2017-12-20 2019-06-20 MAGNETI MARELLI S.p.A. Intercooler provided with a thermoelectric generator for a turbocharged internal combustion heat engine
WO2023221581A1 (en) * 2022-05-17 2023-11-23 潍柴动力股份有限公司 Control method and system for charge air intercooler of engine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7011079B2 (en) * 2003-12-24 2006-03-14 Hyundai Motor Company Intake apparatus for engine of vehicle
DE102008036713A1 (en) 2008-08-07 2010-02-11 Technische Universität Carolo-Wilhelmina Zu Braunschweig Method for separating two objects bonded together via at least one adhesive layer
DE102008051843A1 (en) * 2008-10-17 2010-04-29 Mahle International Gmbh Internal-combustion engine for motor vehicle, has thermoelectric transducer comprising set of thermoelectric elements that are coupled with charged fresh air in heat-transferring manner
DE102008051843B4 (en) * 2008-10-17 2017-12-14 Mahle International Gmbh Internal combustion engine
US20150214458A1 (en) * 2014-01-27 2015-07-30 General Electric Company Thermoelectric generator system for intercooler coupled to turbocharger
CN106194399A (en) * 2014-11-20 2016-12-07 现代自动车株式会社 The inlet gas cooling equipment of vehicle
DE102015119851A1 (en) * 2015-11-17 2017-05-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal combustion engine
US20190186347A1 (en) * 2017-12-20 2019-06-20 MAGNETI MARELLI S.p.A. Intercooler provided with a thermoelectric generator for a turbocharged internal combustion heat engine
US10865702B2 (en) * 2017-12-20 2020-12-15 Marelli Europe S.P.A. Intercooler provided with a thermoelectric generator for a turbocharged internal combustion heat engine
WO2023221581A1 (en) * 2022-05-17 2023-11-23 潍柴动力股份有限公司 Control method and system for charge air intercooler of engine

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