EP0838585B1 - Cylinder head for a multi-cylinder internal combustion engine - Google Patents

Cylinder head for a multi-cylinder internal combustion engine Download PDF

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Publication number
EP0838585B1
EP0838585B1 EP97117109A EP97117109A EP0838585B1 EP 0838585 B1 EP0838585 B1 EP 0838585B1 EP 97117109 A EP97117109 A EP 97117109A EP 97117109 A EP97117109 A EP 97117109A EP 0838585 B1 EP0838585 B1 EP 0838585B1
Authority
EP
European Patent Office
Prior art keywords
flow
cylinder head
cylinder
coolant water
longitudinal
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 - Lifetime
Application number
EP97117109A
Other languages
German (de)
French (fr)
Other versions
EP0838585A1 (en
Inventor
Stjepan Poropatic
Ulrich Dr. Weiss
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0838585A1 publication Critical patent/EP0838585A1/en
Application granted granted Critical
Publication of EP0838585B1 publication Critical patent/EP0838585B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Definitions

  • the invention relates to a cylinder head of a multi-cylinder internal combustion engine according to the preamble of claim 1.
  • the cooling water chamber is divided by a partition into an upper and a lower cooling water chamber, a longitudinal flow in the upper cooling water chamber and a transverse flow of the cooling water through the cylinder head in the lower cooling water chamber to achieve particularly good cooling of the walls near the combustion chamber.
  • dead water zones can occur along the partition wall, which impair the cooling, in particular of the outlet channels and of the shaft receiving a spark plug or an injection nozzle.
  • the invention has for its object in a generic Cylinder head in particular the cooling of the shaft and to improve the exhaust ducts.
  • a guide device which the longitudinal flow and at least the cooling water of the cross flow through the inlet opening is supplied between the outlet channels to the Directs the shaft.
  • the guide device can be connected to an outlet channel be molded on.
  • a can in the cooling water room above the threshold Shaft surrounding, parallel to the cylinder head floor Plate are provided, which prevents the cooling water the cross flow too quickly into the upper area of the cooling water chamber escapes.
  • the cylinder head shown in the drawings has one Floor 1, a ceiling 2 and side walls 3 on a cooling water room 4 limit.
  • the cooling water chamber is 4 per cylinder penetrated by two inlet channels 5, two outlet channels 6 and a shaft 7, which is a spark plug or an injection nozzle records.
  • the cooling water chamber 4 is in the longitudinal direction (arrows L) and in Area of each combustion chamber 8 additionally in the transverse direction (arrows Q) flows through.
  • the cooling water for the longitudinal flow is on the left in Fig. 1 end of the cylinder head and on the right End drained.
  • the cooling water for the cross flow is through Openings 10 between the inlet channels 5 and through openings 11 fed between the outlet channels 6, which with the cooling water chamber in the cylinder block.
  • the cooling water the cross flow essentially unites after flowing through the area near the combustion chamber with the cooling water of the longitudinal flow and flows with it in Fig. 1 to the right.
  • a threshold 12 is provided which extends from the floor 1 in the Cooling water chamber 4 extends and extends transversely to the direction of flow.
  • the longitudinally flowing cooling water is through the threshold 12 deflected from the cylinder head base 1, whereby stagnation points with the Cross flow can be avoided, which is poor heat dissipation would result.
  • the longitudinal flow thus runs in one Distance from the cylinder head floor.
  • it is not like the State of the art separated from the cross flow by a partition one flow can flow the other at the boundary layers carry away, so dead water zones are avoided.
  • a plate Surround 13 which lies above the threshold 12 and is parallel extends to the cylinder head base 1. This plate prevents the cross-flow cooling water flows out too quickly upwards, but without the flow of cooling water into the shaft to hinder the longitudinal flow. Additional is in the Direction of flow of the longitudinal flow in front of the dome 7 a guide device 14 provided in the embodiment example to the outlet channel 6 is formed and, as can be seen from Fig. 1, part of the cooling water of the longitudinal flow around the Shaft 7 leads around. This guide device also causes a corresponding guidance of the emerging from the inflow opening 11 Cross flow cooling water.
  • the cross section of the inflow opening 11 can be made larger are called the cross section of the inlet opening 10 so that a larger part of the cooling water of the cross flow through the opening 11 flows into the cooling water chamber 4 and the thermal highly stressed areas of the cylinder base between the exhaust ports as well as the areas of the exhaust ducts near the combustion chamber and the shaft cools particularly intensively.
  • a preferred cooling of the exhaust side of the cylinder head is also achieved in that the cylinder head cover 2, as from Fig. 2 can be seen, is lowered towards the inlet side, so that the thermally highly stressed outlet side is cooled more as the inlet side.

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  • 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)

Description

Die Erfindung betrifft einen Zylinderkopf einer Mehrzylinder-Brennkraftmaschine entsprechend dem Oberbegriff das Anspruchs 1.
Bei einem bekannten Zylinderkopf der gattungsgemäßen Art (DE-C 42 22 801) ist der Kühlwasserraum durch eine Trennwand in einen oberen und einen unteren Kühlwasserraum aufgeteilt, wobei im oberen Kühlwasserraum eine Längsströmung und im unteren Kühlwasserraum eine Querströmung des Kühlwassers durch den Zylinderkopf vorgesehen werden kann, um eine besonders gute Kühlung der brennraumnahen Wände zu erreichen. Es hat sich jedoch gezeigt, daß entlang der Trennwand Totwasserzonen entstehen können, welche die Kühlung insbesondere der Auslaßkanäle und des eine Zündkerze oder eine Einspritzdüse aufnehmenden Schachtes beeinträchtigen.The invention relates to a cylinder head of a multi-cylinder internal combustion engine according to the preamble of claim 1.
In a known cylinder head of the generic type (DE-C 42 22 801), the cooling water chamber is divided by a partition into an upper and a lower cooling water chamber, a longitudinal flow in the upper cooling water chamber and a transverse flow of the cooling water through the cylinder head in the lower cooling water chamber to achieve particularly good cooling of the walls near the combustion chamber. However, it has been shown that dead water zones can occur along the partition wall, which impair the cooling, in particular of the outlet channels and of the shaft receiving a spark plug or an injection nozzle.

Der Erfindung liegt die Aufgabe zugrunde, bei einem gattungsgemäßen Zylinderkopf insbesondere die Kühlung des Schachtes und der Auslaßkanäle zu verbessern.The invention has for its object in a generic Cylinder head in particular the cooling of the shaft and to improve the exhaust ducts.

Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the in the characteristic of Features specified claim 1 solved.

Bei dem erfindungsgemäßen Vorschlag wird zwar wie beim Stand der Technik eine intensive Kühlung der brennraumnahen Wände des Zylinderkopfes durch eine Querströmung erreicht, jedoch ist diese nicht durch eine Trennwand von der Längsströmung getrennt, so daß die eine Strömungsschicht die andere an den Grenzschichten mitreißt und das Entstehen von Totwasserzonen vermieden ist. Durch die Schwellen wird die Längsströmung vom Zylinderkopfboden abgelenkt, wodurch Staupunkte mit der QuerStrömung vermieden werden, die eine schlechte Wärme-abführung zur Folge hätten.In the proposal according to the invention, as in the state the technology intensive cooling of the combustion chamber walls of the Cylinder head reached by a cross flow, however this is not separated from the longitudinal flow by a partition, so that one flow layer the other at the Boundary layers sweep along and the emergence of dead water zones is avoided. Through the thresholds the longitudinal flow from The cylinder head floor is deflected, creating stagnation points with the cross flow Avoid poor heat dissipation would result.

Vorzugsweise sind jeweils zwischen benachbarten Einlaß- und Auslaßkanälen Zuflußöffnungen für die Querströmung angeordnet, und um eine intensive Kühlung der Schächte sicherzustellen, ist vor jedem Schacht in der Strömungsrichtung der Längsströmung eine Leitvorrichtung vorgesehen, welche die Längsströmung und zumindest das Kühlwasser der Querströmung, das durch die Zuflußöffnung zwischen den Auslaßkanälen zugeführt wird, um den Schacht herumlenkt. Dabei wird der Umstand ausgenutzt, daß bei einem Vierventil-Zylinderkopf die Auslaßkanäle in der Regel einen kleineren Durchmesser haben als die Einlaßkanäle, so daß die Zuflußöffnungen zwischen den Auslaßkanälen einen größeren Querschnitt haben können als die Zuflußöffnungen zwischen den Einlaßkanälen. Der dadurch bewirkte größere Kühlwasseranteil der Querströmung wird von der Leitvorrichtung gezielt auf den Schacht gerichtet. Die Leitvorrichtung kann dabei an einen Auslaßkanal angeformt sein.Are preferably between adjacent inlet and Outlet channels arranged inflow openings for the cross flow, and to ensure intensive cooling of the shafts in front of each shaft in the direction of flow of the longitudinal flow a guide device is provided which the longitudinal flow and at least the cooling water of the cross flow through the inlet opening is supplied between the outlet channels to the Directs the shaft. This takes advantage of the fact that at a four-valve cylinder head, the exhaust ports usually one have a smaller diameter than the inlet channels, so that the inflow openings between the outlet channels a larger one Can have cross-section than the inflow openings between the Inlet channels. The resulting larger proportion of cooling water the cross flow is targeted by the guide device Shaft directed. The guide device can be connected to an outlet channel be molded on.

Um die Querströmung länger im Bereich des Zylinderkopfbodens zu halten, kann im Kühlwasserraum oberhalb der Schwelle eine den Schacht umgebende, parallel zum Zylinderkopfboden verlaufende Platte vorgesehen werden, die verhindert, daß das Kühlwasser der Querströmung zu schnell in den oberen Bereich des Kühlwasserraumes entweicht.To keep the cross flow longer in the area of the cylinder head base hold, a can in the cooling water room above the threshold Shaft surrounding, parallel to the cylinder head floor Plate are provided, which prevents the cooling water the cross flow too quickly into the upper area of the cooling water chamber escapes.

Ein Ausführungsbeispiel der Erfindung wird im folgenden unter Bezugnahme auf die Zeichnungen beschrieben. Es zeigt:

Fig. 1
einen Schnitt des einem Zylinder einer Mehrzylinder-Brennkraftmaschine zugeordneten Teiles eines Vierventil-Zylinderkopfes entlang Linie 1-1 in Fig. 3,
Fig. 2
einen Querschnitt entlang Linie 2-2 in Fig. 1, und
Fig. 3
einen Schnitt entlang Linie 3-3 in Fig. 1.
An embodiment of the invention is described below with reference to the drawings. It shows:
Fig. 1
3 shows a section of the part of a four-valve cylinder head assigned to a cylinder of a multi-cylinder internal combustion engine, along line 1-1 in FIG. 3,
Fig. 2
a cross-section along line 2-2 in Fig. 1, and
Fig. 3
a section along line 3-3 in Fig. 1st

Der in den Zeichnungen dargestellte Zylinderkopf weist einen Boden 1, eine Decke 2 und Seitenwände 3 auf, die einen Kühlwasserraum 4 begrenzen. Pro Zylinder ist der Kühlwasserraum 4 durchsetzt von zwei Einlaßkanälen 5, zwei Auslaßkanälen 6 und einem Schacht 7, der eine Zündkerze oder eine Einspritzdüse aufnimmt.The cylinder head shown in the drawings has one Floor 1, a ceiling 2 and side walls 3 on a cooling water room 4 limit. The cooling water chamber is 4 per cylinder penetrated by two inlet channels 5, two outlet channels 6 and a shaft 7, which is a spark plug or an injection nozzle records.

Der Kühlwasserraum 4 wird in Längsrichtung (Pfeile L) und im Bereich jedes Brennraumes 8 zusätzlich in Querrichtung (Pfeile Q) durchströmt. Das Kühlwasser für die Längsströmung wird an dem in Fig. 1 linken Ende des Zylinderkopfes zu- und am rechten Ende abgeführt. Das Kühlwasser für die Querströmung wird durch Öffnungen 10 zwischen den Einlaßkanälen 5 und durch Öffnungen 11 zwischen den Auslaßkanälen 6 zugeführt, die mit dem Kühlwasserraum im Zylinderblock in Verbindung stehen. Das Kühlwasser der Querströmung vereinigt sich im wesentlichen nach Durchströmen des brennraumnahen Bereiches mit dem Kühlwasser der Längsströmung und strömt mit diesem in Fig. 1 nach rechts.The cooling water chamber 4 is in the longitudinal direction (arrows L) and in Area of each combustion chamber 8 additionally in the transverse direction (arrows Q) flows through. The cooling water for the longitudinal flow is on the left in Fig. 1 end of the cylinder head and on the right End drained. The cooling water for the cross flow is through Openings 10 between the inlet channels 5 and through openings 11 fed between the outlet channels 6, which with the cooling water chamber in the cylinder block. The cooling water the cross flow essentially unites after flowing through the area near the combustion chamber with the cooling water of the longitudinal flow and flows with it in Fig. 1 to the right.

Um eine weitgehend ungehinderte Querdurchströmung nahe dem Zylinderkopfboden 1 und damit eine wirksame Kühlung der brennraumnahen Wände und insbesondere auch des Schachtes 7 und der Auslaßkanäle 6 zu erreichen, ist in der Strömungsrichtung der Längsströmung vor den Einlaß- und Auslaßventilen jedes Zylinders eine Schwelle 12 vorgesehen, die sich vom Boden 1 in den Kühlwasserraum 4 erstreckt und quer zur Strömungsrichtung verläuft. Durch die Schwelle 12 wird das längsströmende Kühlwasser vom Zylinderkopfboden 1 abgelenkt, wodurch Staupunkte mit der Querströmung vermieden werden, die eine schlechte Wärmeabführung zur Folge hätten. Die Längsströmung verläuft also in einem Abstand vom Zylinderkopfboden. Da sie jedoch nicht wie beim Stand der Technik durch eine Trennwand von der Querströmung getrennt ist, kann die eine Strömung die andere an den Grenzschichten mitreißen, wodurch Totwasserzonen vermieden sind.To a largely unhindered cross flow near the cylinder head floor 1 and thus an effective cooling of the combustion chamber Walls and especially the shaft 7 and the To reach outlet channels 6 is in the direction of flow Longitudinal flow in front of the intake and exhaust valves of each cylinder a threshold 12 is provided which extends from the floor 1 in the Cooling water chamber 4 extends and extends transversely to the direction of flow. The longitudinally flowing cooling water is through the threshold 12 deflected from the cylinder head base 1, whereby stagnation points with the Cross flow can be avoided, which is poor heat dissipation would result. The longitudinal flow thus runs in one Distance from the cylinder head floor. However, since it is not like the State of the art separated from the cross flow by a partition one flow can flow the other at the boundary layers carry away, so dead water zones are avoided.

Um eine besonders intensive Kühlung des brennraumnahen Bereiches des Schachtes 7 zu erreichen, ist dieser von einer Platte 13 umgeben, die oberhalb der Schwelle 12 liegt und sich parallel zum Zylinderkopfboden 1 erstreckt. Diese Platte verhindert ein zu schnelles Abströmen des Kühlwassers der Querströmung nach oben, ohne jedoch das Anströmen des Schach-tes durch Kühlwasser der Längsströmung zu behindern. Zusätz-lich ist in der Strömungsrichtung der Längsströmung vor dem Dom 7 eine Leitvorrichtung 14 vorgesehen, die im Ausführungs-beispiel an den Auslaßkanal 6 angeformt ist und, wie aus Fig. 1 ersichtlich ist, einen Teil des Kühlwassers der Längsströmung gezielt um den Schacht 7 herumführt. Diese Leitvorrichtung bewirkt außerdem eine entsprechende Führung des aus der Zuflußöffnung 11 austretenden Kühlwassers der Querströmung. Da die Auslaßkanäle 6 in der Regel einen kleineren Durchmesser haben als die Einlaßkanäle 5 und daher in einem größeren Abstand voneinander liegen, kann der Querschnitt der Zuflußöffnung 11 größer ausgeführt werden als der Querschnitt der Zuflußöffnung 10, so daß ein größerer Teil des Kühlwassers der Querströmung durch die Öffnung 11 in den Kühlwasserraum 4 einströmt und die thermisch hochbeanspruchten Bereiche des Zylinderbodens zwischen den Auslaßkanälen sowie die brennraumnahen Bereiche der Auslaßkanäle und des Schachtes besonders intensiv kühlt.For particularly intensive cooling of the area near the combustion chamber to reach the shaft 7, this is from a plate Surround 13, which lies above the threshold 12 and is parallel extends to the cylinder head base 1. This plate prevents the cross-flow cooling water flows out too quickly upwards, but without the flow of cooling water into the shaft to hinder the longitudinal flow. Additional is in the Direction of flow of the longitudinal flow in front of the dome 7 a guide device 14 provided in the embodiment example to the outlet channel 6 is formed and, as can be seen from Fig. 1, part of the cooling water of the longitudinal flow around the Shaft 7 leads around. This guide device also causes a corresponding guidance of the emerging from the inflow opening 11 Cross flow cooling water. Since the outlet channels 6 in usually have a smaller diameter than the inlet channels 5 and are therefore at a greater distance from one another, The cross section of the inflow opening 11 can be made larger are called the cross section of the inlet opening 10 so that a larger part of the cooling water of the cross flow through the opening 11 flows into the cooling water chamber 4 and the thermal highly stressed areas of the cylinder base between the exhaust ports as well as the areas of the exhaust ducts near the combustion chamber and the shaft cools particularly intensively.

Eine bevorzugte Kühlung der Auslaßseite des Zylinderkopfes wird auch dadurch erreicht, daß die Zylinderkopfdecke 2, wie aus Fig. 2 ersichtlich, zur Einlaßseite hin abgesenkt ist, so daß die thermisch hochbelastete Auslaßseite stärker gekühlt wird als die Einlaßseite.A preferred cooling of the exhaust side of the cylinder head is also achieved in that the cylinder head cover 2, as from Fig. 2 can be seen, is lowered towards the inlet side, so that the thermally highly stressed outlet side is cooled more as the inlet side.

Claims (5)

  1. Cylinder head of a multi-cylinder internal combustion engine having a base (1) and a cover (2) delimiting a coolant water chamber (4), with exchange passages (5, 6) and, for each cylinder, a duct (7) housing an ignition plug or injection nozzle running therethrough, through which coolant water flows in a longitudinal direction and, in the bottom region thereof adjacent to the base (1), in the transverse direction,
    characterised in that a partition (12) extending from the base (1) into the coolant water chamber (4) is provided for each cylinder upstream of the gas exchange passages (5, 6) in the flow direction of the longitudinal flow (L), which runs transversely to the flow direction of the longitudinal flow.
  2. Cylinder head as claimed in claim 1, characterised in that inflow openings (10, 11) for the transverse flow (Q) are provided respectively between adjacent inlet and outlet passages (5 and 6) and in that a deflector device (14) is provided upstream of each duct (7) in the flow direction of the longitudinal flow (L) which directs the longitudinal flow and at least the coolant water of the transverse flow (Q) fed in through the inflow opening (11) between outlet passages (6) around the duct (7).
  3. Cylinder head as claimed in claim 2, characterised in that the inflow opening (11) has a larger cross section between adjacent outlet passages (6) than the inflow opening (10) between adjacent inlet passages (5).
  4. Cylinder head as claimed in claim 2 or 3, characterised in that the deflector device (14) is formed on an outlet passage (6).
  5. Cylinder head as claimed in one of claims 1 to 4, characterised in that a plate (13) surrounding the duct (7) and extending parallel with the base (1) is provided in the coolant water chamber (4) above the partition (12).
EP97117109A 1996-10-25 1997-10-02 Cylinder head for a multi-cylinder internal combustion engine Expired - Lifetime EP0838585B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19644409A DE19644409C1 (en) 1996-10-25 1996-10-25 Cylinder head of multi=cylinder internal combustion engine
DE19644409 1996-10-25

Publications (2)

Publication Number Publication Date
EP0838585A1 EP0838585A1 (en) 1998-04-29
EP0838585B1 true EP0838585B1 (en) 2001-06-06

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US (1) US5868106A (en)
EP (1) EP0838585B1 (en)
DE (2) DE19644409C1 (en)

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DE102004005749B4 (en) * 2004-02-05 2014-01-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Coolant-jacketed cylinder head with optimized coolant space

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DE19943001C1 (en) * 1999-09-09 2000-10-26 Porsche Ag Water-cooled motor cylinder head has a unit in the coolant flow channel for an additional coolant flow at the known cylinder head hot spots
DE10026376B4 (en) * 2000-05-27 2015-04-30 Volkswagen Ag Liquid cooled cylinder head for an internal combustion engine
US6363893B1 (en) 2001-04-03 2002-04-02 Honda Giken Kogyo Kabushiki Kaisha Water jacket for multi-cylinder internal combustion engine
JP2003056343A (en) * 2001-08-10 2003-02-26 Toyota Industries Corp Cylinder head cooling structure for internal combustion engine
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JP4100279B2 (en) * 2003-07-16 2008-06-11 三菱自動車工業株式会社 Cylinder head precooled engine
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US8899207B2 (en) * 2009-10-14 2014-12-02 Southwest Research Institute Cylinder head for an engine
CN101956627B (en) * 2010-06-08 2012-10-03 东风汽车公司 Gasoline engine cylinder cover with enhanced cooling bridge area high temperature part
DE102010038055A1 (en) * 2010-10-08 2012-04-12 Ford Global Technologies, Llc Internal combustion engine with liquid cooling
JP6123660B2 (en) * 2013-12-09 2017-05-10 マツダ株式会社 Engine cooling structure
JP6127950B2 (en) * 2013-12-09 2017-05-17 マツダ株式会社 Engine cooling structure
AT521514B1 (en) * 2018-09-14 2020-02-15 Avl List Gmbh cylinder head

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US4304199A (en) * 1979-12-31 1981-12-08 Fiat Veicoli Industriali S.P.A. Cylinder head for compression-ignition internal combustion engines having precombustion chambers
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DE3513126A1 (en) * 1985-04-12 1986-10-30 Daimler-Benz Ag, 7000 Stuttgart LIQUID-COOLED FOUR-VALVE CYLINDER HEAD FOR A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
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Publication number Priority date Publication date Assignee Title
DE102004005749B4 (en) * 2004-02-05 2014-01-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Coolant-jacketed cylinder head with optimized coolant space

Also Published As

Publication number Publication date
DE59703721D1 (en) 2001-07-12
US5868106A (en) 1999-02-09
DE19644409C1 (en) 1998-01-29
EP0838585A1 (en) 1998-04-29

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