WO2012004340A1 - Cylinder head for a liquid-cooled internal combustion engine - Google Patents

Cylinder head for a liquid-cooled internal combustion engine Download PDF

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Publication number
WO2012004340A1
WO2012004340A1 PCT/EP2011/061495 EP2011061495W WO2012004340A1 WO 2012004340 A1 WO2012004340 A1 WO 2012004340A1 EP 2011061495 W EP2011061495 W EP 2011061495W WO 2012004340 A1 WO2012004340 A1 WO 2012004340A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
cooling chamber
deck
tube
cooling
Prior art date
Application number
PCT/EP2011/061495
Other languages
German (de)
French (fr)
Inventor
Thomas Hirschberger
Original Assignee
Avl List Gmbh
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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2012004340A1 publication Critical patent/WO2012004340A1/en

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Classifications

    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or injectors

Definitions

  • the invention relates to a cylinder head for a liquid-cooled internal combustion engine having a lower partial cooling space adjacent to a fire deck and an upper partial cooling space connected thereto via at least one overflow opening, wherein the lower and upper partial cooling spaces are separated by an intermediate deck, and wherein the upper partial cooling space is fluidly connected to a flow opening in the fire deck via a substantially aligned in the direction of the cylinder axis flow channel.
  • WO 2008/122544 A1 discloses a cylinder head for a liquid-cooled internal combustion engine with a lower partial cooling space adjacent to a fire deck and a partial cooling space arranged above it, the two partial cooling spaces being separated from one another by an intermediate deck but connected to one another via flow openings.
  • the upper part of the cooling chamber is connected via a riser with a cooling jacket of the cylinder block, wherein the riser is mitgegossen with the cylinder head. Due to the required cores, the casting production is relatively demanding and expensive, with the required wall thickness between the riser and the lower part of the cooling chamber, the volume of the lower part of the cooling chamber is reduced accordingly.
  • the object is to avoid these disadvantages and to simplify the production of a cylinder head of the type mentioned and to improve the cooling.
  • the flow channel is formed by a pipe inserted or inserted into the flow opening of the fire deck, wherein preferably the pipe extends between the fire deck and the intermediate deck.
  • the tube is pressed into the flow opening of the fire deck and / or into an opening of the intermediate deck.
  • joining methods such as gluing, welding or the like are conceivable.
  • the tube can be made by a metal sleeve, for example made of steel or aluminum.
  • the tube at least in one to the lower part of the cooling room Having - adjacent mantle area, preferably in the region of the intermediate deck, at least one degassing hole.
  • Fig. 1 shows a cylinder head according to the invention in a section according to the
  • Fig. 2 shows the cylinder head in a section along the line II-II in Fig. 1;
  • Fig. 3 shows the cylinder head in a section along the line III-III in Fig. 1;
  • Fig. 4 shows the cylinder head in a section along the line IV-IV in Fig. 1.
  • the Fig. 1 to 4 show a cylinder head 1 of a coolant-cooled internal combustion engine.
  • a cooling system is provided, which flows through upper and lower part cooling chambers 2, 3 in the cylinder head 1.
  • the upper part of the cooling chamber 2 and the lower part of the cooling chamber 2 are fluidly connected to each other at least via an overflow 4 between an injector 5 and the intermediate part 6 separating the upper part of the cooling chamber 2 and the lower part of the cooling chamber 3.
  • a flow channel 8 formed by a pipe 7 is provided, which connects the upper part cooling space 2 via a flow opening 9 in the fire deck 10 with the cooling jacket, not shown, of the cylinder housing.
  • the lower part of the cooling chamber 3 opens via at least one coolant outlet I Ib per cylinder in a on the longitudinal side lb of the cylinder head 1 to be arranged, not shown, the coolant collecting chamber, a. Also, the upper part of the pressure chamber 2 may be connected via a coolant outlet I Ia with a coolant collection chamber.
  • the pipe 7 formed, for example, by a metal sleeve as made of steel or aluminum is pressed into the flow opening 9 of the fire deck 10 and into an opening 13 of the intermediate deck 6.
  • the tube 7 has at least one devolatilizing bore 12 in a region adjoining the lower partial cooling space 3, in particular in the area of the operationally highest point of the lower partial cooling space 3.
  • the tube 7 penetrates the lower part of the cooling chamber 3, wherein the outer circumferential surface of the tube 7 is directly adjacent to the coolant of the lower part of the cooling chamber 3.
  • the flow opening 9 in the fire deck 10 and the opening 13 in the intermediate deck 6 can be drilled after the casting process. This allows separate cores - - accounted for the riser. Another advantage is that is not limited by mitgegossene partitions due to the small wall thickness of the tube 7, the lower part of the cooling room 3.
  • the cylinder head 1 is particularly suitable for cooling systems with reverse flow direction in the cylinder head 1, ie from the upper part of the cooling chamber 2 in the lower part of the cooling chamber 3.
  • the coolant can flow from the cooling chambers of a cylinder block not shown through the pipe 7 in the upper part of the cooling chamber 2 in the cylinder head 1 and passes through the overflow openings 4 to the injector 5 in the lower part of the cooling chamber 3.
  • the coolant leaves the cylinder head 1 on lateral outflow openings I Ia and I Ib on the longitudinal side lb of the cylinder head. 1

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a cylinder head (1) for a liquid-cooled internal combustion engine, comprising a lower partial cooling chamber (3) adjoining a cover plate (10) and an upper partial cooling chamber (2) that is in fluid connection with the lower partial cooling chamber via at least one transfer opening (4), wherein the lower and upper partial cooling chambers (3, 2) are separated from each other by an intermediate plate (6), and wherein the upper partial cooling chamber (2) is in fluid connection with a flow opening (9) in the cover plate (10) via a flow duct that is oriented essentially in the direction of the cylinder axis. In order to simplify production and improve cooling in the region of the cover plate, the flow duct is formed by a pipe (7) that is placed in or on the flow opening (9) of the cover plate.

Description

- -  - -
Zylinderkopf für eine flüssigkeitsgekühlte Brennkraftmaschine Cylinder head for a liquid-cooled internal combustion engine
Die Erfindung betrifft einen Zylinderkopf für eine flüssigkeitsgekühlte Brennkraftmaschine mit einem an ein Feuerdeck grenzenden unteren Teilkühlraum und einem mit diesem über zumindest eine Überströmöffnung strömungsverbunde- nen oberen Teilkühlraum, wobei der untere und der obere Teilkühlraum durch ein Zwischendeck voneinander getrennt sind, und wobei der obere Teilkühlraum über einen im Wesentlichen in Richtung der Zylinderachse ausgerichteten Strömungskanal mit einer Strömungsöffnung im Feuerdeck strömungsverbunden ist. The invention relates to a cylinder head for a liquid-cooled internal combustion engine having a lower partial cooling space adjacent to a fire deck and an upper partial cooling space connected thereto via at least one overflow opening, wherein the lower and upper partial cooling spaces are separated by an intermediate deck, and wherein the upper partial cooling space is fluidly connected to a flow opening in the fire deck via a substantially aligned in the direction of the cylinder axis flow channel.
Die WO 2008/122544 AI offenbart einen Zylinderkopf für eine flüssigkeitsgekühlte Brennkraftmaschine mit einem an ein Feuerdeck grenzenden unteren Teilkühlraum und einem darüber angeordneten Teilkühlraum, wobei die beiden Teilkühlräume durch ein Zwischendeck voneinander getrennt, aber über Strömungsöffnungen miteinander verbunden sind . Der obere Teilkühlraum ist dabei über einen Steigkanal mit einem Kühlmantel des Zylinderblocks verbunden, wobei der Steigkanal mit dem Zylinderkopf mitgegossen ist. Aufgrund der erforderlichen Kerne ist die gusstechnische Herstellung relativ anspruchsvoll und aufwendig, wobei durch die erforderlichen Wandstärken zwischen dem Steigkanal und dem unteren Teilkühlraum das Volumen des unteren Teilkühlraums entsprechend vermindert wird. WO 2008/122544 A1 discloses a cylinder head for a liquid-cooled internal combustion engine with a lower partial cooling space adjacent to a fire deck and a partial cooling space arranged above it, the two partial cooling spaces being separated from one another by an intermediate deck but connected to one another via flow openings. The upper part of the cooling chamber is connected via a riser with a cooling jacket of the cylinder block, wherein the riser is mitgegossen with the cylinder head. Due to the required cores, the casting production is relatively demanding and expensive, with the required wall thickness between the riser and the lower part of the cooling chamber, the volume of the lower part of the cooling chamber is reduced accordingly.
Aufgabe ist es, diese Nachteile zu vermeiden und bei einem Zylinderkopf der eingangs genannten Art die Fertigung zu vereinfachen und die Kühlung zu verbessern. The object is to avoid these disadvantages and to simplify the production of a cylinder head of the type mentioned and to improve the cooling.
Erfindungsgemäß wird dies dadurch erreicht, dass der Strömungskanal durch ein in die Strömungsöffnung des Feuerdecks auf- oder eingesetztes Rohr gebildet ist, wobei vorzugsweise das Rohr sich zwischen dem Feuerdeck und dem Zwischendeck erstreckt. According to the invention, this is achieved in that the flow channel is formed by a pipe inserted or inserted into the flow opening of the fire deck, wherein preferably the pipe extends between the fire deck and the intermediate deck.
In einer besonders einfachen Ausführungsvariante ist vorgesehen, dass das Rohr in die Strömungsöffnung des Feuerdecks und/oder in eine Öffnung des Zwischendecks eingepresst ist. Selbstverständlich sind aber auch andere Fügeverfahren, wie Kleben, Schweißen oder dergelichen denkbar. Das Rohr kann durch eine Metallhülse, beispielsweise aus Stahl oder aus Aluminium, bestehen. In a particularly simple embodiment, it is provided that the tube is pressed into the flow opening of the fire deck and / or into an opening of the intermediate deck. Of course, other joining methods, such as gluing, welding or the like are conceivable. The tube can be made by a metal sleeve, for example made of steel or aluminum.
Um Dampfansammlungen im unteren Teilkühlraum zu vermeiden, ist es besonders vorteilhaft, wenn das Rohr zumindest in einem an den unteren Teilkühlraum - - grenzenden Mantelbereich, vorzugsweise im Bereich des Zwischendecks, mindestens eine Entgasungsbohrung aufweist. To avoid accumulations of vapor in the lower part of the cooling chamber, it is particularly advantageous if the tube at least in one to the lower part of the cooling room Having - adjacent mantle area, preferably in the region of the intermediate deck, at least one degassing hole.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen : The invention will be explained in more detail below with reference to FIGS. Show it :
Fig. 1 einen erfindungsgemäßen Zylinderkopf in einem Schnitt gemäß der Fig. 1 shows a cylinder head according to the invention in a section according to the
Linie I-I in Fig . 2;  Line I-I in FIG. 2;
Fig. 2 den Zylinderkopf in einem Schnitt gemäß der Linie II-II in Fig . 1; Fig. 2 shows the cylinder head in a section along the line II-II in Fig. 1;
Fig. 3 den Zylinderkopf in einem Schnitt gemäß der Linie III-III in Fig . 1; Fig. 3 shows the cylinder head in a section along the line III-III in Fig. 1;
und  and
Fig. 4 den Zylinderkopf in einem Schnitt gemäß der Linie IV-IV in Fig . 1. Fig. 4 shows the cylinder head in a section along the line IV-IV in Fig. 1.
Die Fig . 1 bis Fig. 4 zeigen einen Zylinderkopf 1 einer kühlmittelgekühlten Brennkraftmaschine. Zur Kühlung ist ein Kühlsystem vorgesehen, welches obere und untere Teilkühlräume 2, 3 im Zylinderkopf 1 durchströmt. Der obere Teilkühlraum 2 und der untere Teilkühlraum 2 sind dabei zumindest über eine Überströmöffnung 4 zwischen einer Injektorhülse 5 und dem den oberen Teilkühlraum 2 und den unteren Teilkühlraum 3 voneinander trennenden Zwischendeck 6 miteinander strömungsverbunden. An zumindest einer Längsseite la des Zylinderkopfes 1 ist ein durch ein Rohr 7 gebildeter Strömungskanal 8 vorgesehen, welcher den oberen Teilkühlraum 2 über eine Strömungsöffnung 9 im Feuerdeck 10 mit dem nicht weiter dargestellten Kühlmantel des Zylindergehäuses verbindet. Der untere Teilkühlraum 3 mündet über zumindest einen Kühlmittelaustritt I Ib pro Zylinder in einen an der Längsseite lb des Zylinderkopfes 1 anzuordnenden, nicht weiter dargestellten Kühlmittelsammelraum, ein. Auch der obere Teilfühlraum 2 kann über einen Kühlmittelaustritt I Ia mit einem Kühlmittelsammelraum verbunden sein. The Fig. 1 to 4 show a cylinder head 1 of a coolant-cooled internal combustion engine. For cooling, a cooling system is provided, which flows through upper and lower part cooling chambers 2, 3 in the cylinder head 1. The upper part of the cooling chamber 2 and the lower part of the cooling chamber 2 are fluidly connected to each other at least via an overflow 4 between an injector 5 and the intermediate part 6 separating the upper part of the cooling chamber 2 and the lower part of the cooling chamber 3. On at least one longitudinal side la of the cylinder head 1, a flow channel 8 formed by a pipe 7 is provided, which connects the upper part cooling space 2 via a flow opening 9 in the fire deck 10 with the cooling jacket, not shown, of the cylinder housing. The lower part of the cooling chamber 3 opens via at least one coolant outlet I Ib per cylinder in a on the longitudinal side lb of the cylinder head 1 to be arranged, not shown, the coolant collecting chamber, a. Also, the upper part of the pressure chamber 2 may be connected via a coolant outlet I Ia with a coolant collection chamber.
Das beispielsweise durch eine Metallhülse als aus Stahl oder Aluminium gebildete Rohr 7 ist in die Strömungsöffnung 9 des Feuerdecks 10 und in eine Öffnung 13 des Zwischendecks 6 eingepresst. Um Dampfblasen aus dem unteren Teilkühlraum 3 wirksam abzuführen, weist das Rohr 7 in einem an den unteren Teilkühlraum 3 grenzenden Bereich, insbesondere m Bereich des betriebsmäßig höchsten Punktes des unteren Teilkühlraums 3, zumindest eine Entdampfungsbohrung 12 auf. The pipe 7 formed, for example, by a metal sleeve as made of steel or aluminum is pressed into the flow opening 9 of the fire deck 10 and into an opening 13 of the intermediate deck 6. In order effectively to remove vapor bubbles from the lower partial cooling space 3, the tube 7 has at least one devolatilizing bore 12 in a region adjoining the lower partial cooling space 3, in particular in the area of the operationally highest point of the lower partial cooling space 3.
Das Rohr 7 durchdringt den unteren Teilkühlraum 3, wobei die äußere Mantelfläche des Rohrs 7 direkt an das Kühlmittel des unteren Teilkühlraums 3 grenzt. The tube 7 penetrates the lower part of the cooling chamber 3, wherein the outer circumferential surface of the tube 7 is directly adjacent to the coolant of the lower part of the cooling chamber 3.
Die Strömungsöffnung 9 im Feuerdeck 10 und die Öffnung 13 im Zwischendeck 6 können nach dem Gießvorgang gebohrt werden. Dadurch können separate Kerne - - für den Steigkanal entfallen. Ein weiterer Vorteil ist, dass durch die geringe Wandstärke des Rohres 7 der untere Teilkühlraum 3 nicht durch mitgegossene Trennwände eingeschränkt wird . The flow opening 9 in the fire deck 10 and the opening 13 in the intermediate deck 6 can be drilled after the casting process. This allows separate cores - - accounted for the riser. Another advantage is that is not limited by mitgegossene partitions due to the small wall thickness of the tube 7, the lower part of the cooling room 3.
Der Zylinderkopf 1 ist insbesondere für Kühlsysteme mit umgekehrter Strömungsrichtung im Zylinderkopf 1, also vom oberen Teilkühlraum 2 in den unteren Teilkühlraum 3, geeignet. Dabei kann das Kühlmittel aus den Kühlräumen eines nicht weiter dargestellten Zylinderblockes durch das Rohr 7 in den oberen Teilkühlraum 2 in den Zylinderkopf 1 einströmen und gelangt dabei über die Überströmöffnungen 4 um die Injektorhülse 5 in den unteren Teilkühlraum 3. Das Kühlmittel verlässt den Zylinderkopf 1 über seitliche Ausströmöffnungen I Ia und I Ib an der Längsseite lb des Zylinderkopfes 1. The cylinder head 1 is particularly suitable for cooling systems with reverse flow direction in the cylinder head 1, ie from the upper part of the cooling chamber 2 in the lower part of the cooling chamber 3. In this case, the coolant can flow from the cooling chambers of a cylinder block not shown through the pipe 7 in the upper part of the cooling chamber 2 in the cylinder head 1 and passes through the overflow openings 4 to the injector 5 in the lower part of the cooling chamber 3. The coolant leaves the cylinder head 1 on lateral outflow openings I Ia and I Ib on the longitudinal side lb of the cylinder head. 1

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Zylinderkopf (1) für eine flüssigkeitsgekühlte Brennkraftmaschine mit einem an ein Feuerdeck (10) grenzenden unteren Teilkühlraum (3) und einem mit diesem über zumindest eine Überströmöffnung (4) strömungsverbundenen oberen Teilkühlraum (2), wobei der untere und der obere Teilkühlraum (3, 2) durch ein Zwischendeck (6) voneinander getrennt sind, und wobei der obere Teilkühlraum (2) über einen im Wesentlichen in Richtung der Zylinderachse ausgerichteten Strömungskanal mit einer Strömungsöffnung (9) im Feuerdeck (10) strömungsverbunden ist, dadurch gekennzeichnet, dass der Strömungskanal durch ein in die Strömungsöffnung (9) des Feuerdecks ein- oder aufgesetztes Rohr (7) gebildet ist. Cylinder head (1) for a liquid-cooled internal combustion engine having a lower part cooling space (3) adjoining a fire deck (10) and an upper part cooling space (2) connected thereto via at least one overflow opening (4), the lower and the upper part cooling rooms (2). 3, 2) by an intermediate deck (6) are separated from each other, and wherein the upper part of the cooling chamber (2) via a substantially aligned in the direction of the cylinder axis flow channel with a flow opening (9) in the fire deck (10), characterized in that the flow channel is formed by a tube (7) inserted or placed in the flow opening (9) of the fire deck.
2. Zylinderkopf (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr (7) sich zwischen dem Feuerdeck (10) und dem Zwischendeck (6) erstreckt. 2. Cylinder head (1) according to claim 1, characterized in that the tube (7) extends between the fire deck (10) and the intermediate deck (6).
3. Zylinderkopf (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Rohr (7) in die Strömungsöffnung (9) des Feuerdecks (10) und/oder in eine Öffnung (13) des Zwischendecks (6) eingepresst ist. 3. Cylinder head (1) according to claim 1 or 2, characterized in that the tube (7) in the flow opening (9) of the fire deck (10) and / or in an opening (13) of the intermediate deck (6) is pressed.
4. Zylinderkopf (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Rohr (7) durch eine Metallhülse, vorzugsweise aus Stahl oder aus Aluminium, gebildet ist. 4. Cylinder head (1) according to one of claims 1 to 3, characterized in that the tube (7) is formed by a metal sleeve, preferably made of steel or aluminum.
5. Zylinderkopf (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Rohr (7) zumindest in einem an den unteren Teilkühlraum (2) grenzenden Mantelbereich (7a), vorzugsweise im Bereich des Zwischendecks (6), mindestens eine Entdampfungsbohrung (12) aufweist. 5. Cylinder head (1) according to one of claims 1 to 4, characterized in that the tube (7) at least in one of the lower part of the cooling chamber (2) adjacent jacket region (7a), preferably in the region of the intermediate deck (6), at least one Entdampfungsbohrung (12).
PCT/EP2011/061495 2010-07-08 2011-07-07 Cylinder head for a liquid-cooled internal combustion engine WO2012004340A1 (en)

Applications Claiming Priority (2)

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ATA1158/2010 2010-07-08
AT11582010A AT508830B1 (en) 2010-07-08 2010-07-08 CYLINDER HEAD FOR A LIQUID-COOLED INTERNAL COMBUSTION ENGINE

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WO2012004340A1 true WO2012004340A1 (en) 2012-01-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015086791A1 (en) * 2013-12-12 2015-06-18 Avl List Gmbh Liquid-cooled internal combustion engine
WO2020188071A1 (en) 2019-03-20 2020-09-24 Avl List Gmbh Internal combustion engine having at least one cylinder
AT526344B1 (en) * 2022-08-23 2024-02-15 Avl List Gmbh Liquid-cooled cylinder head

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Publication number Priority date Publication date Assignee Title
JP6303991B2 (en) * 2014-11-13 2018-04-04 トヨタ自動車株式会社 cylinder head
AT518998B1 (en) * 2016-12-07 2018-03-15 Avl List Gmbh CYLINDER HEAD
DE102018116973A1 (en) * 2018-07-13 2020-01-16 Man Truck & Bus Se Cylinder head and crankcase for an internal combustion engine

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JPS5032440U (en) * 1973-07-24 1975-04-09
JPS5679649U (en) * 1979-11-26 1981-06-27
WO2008122544A1 (en) 2007-04-05 2008-10-16 Avl List Gmbh Liquid-cooled internal combustion engine

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JPS5814438U (en) * 1981-07-23 1983-01-29 株式会社小松製作所 internal combustion engine
JPS6133937U (en) * 1984-07-31 1986-03-01 日産ディーゼル工業株式会社 Water-cooled engine cylinder head

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JPS5032440U (en) * 1973-07-24 1975-04-09
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WO2008122544A1 (en) 2007-04-05 2008-10-16 Avl List Gmbh Liquid-cooled internal combustion engine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015086791A1 (en) * 2013-12-12 2015-06-18 Avl List Gmbh Liquid-cooled internal combustion engine
US10047660B2 (en) 2013-12-12 2018-08-14 Avl List Gmbh Liquid-cooled internal combustion engine
WO2020188071A1 (en) 2019-03-20 2020-09-24 Avl List Gmbh Internal combustion engine having at least one cylinder
AT522271A1 (en) * 2019-03-20 2020-10-15 Avl List Gmbh COMBUSTION MACHINE WITH AT LEAST ONE CYLINDER
AT522271B1 (en) * 2019-03-20 2021-02-15 Avl List Gmbh COMBUSTION ENGINE WITH AT LEAST ONE CYLINDER
US11519357B2 (en) 2019-03-20 2022-12-06 Avl List Gmbh Internal combustion engine having at least one cylinder
AT526344B1 (en) * 2022-08-23 2024-02-15 Avl List Gmbh Liquid-cooled cylinder head
AT526344A4 (en) * 2022-08-23 2024-02-15 Avl List Gmbh Liquid-cooled cylinder head
WO2024040279A1 (en) 2022-08-23 2024-02-29 Avl List Gmbh Liquid-cooled cylinder head

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AT508830B1 (en) 2012-03-15

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