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DE2438193A1 - Air cooled engine cooling system - uses lubricating oil for cooling hot parts of cylinder heads - Google Patents

Air cooled engine cooling system - uses lubricating oil for cooling hot parts of cylinder heads

Info

Publication number
DE2438193A1
DE2438193A1 DE2438193A DE2438193A DE2438193A1 DE 2438193 A1 DE2438193 A1 DE 2438193A1 DE 2438193 A DE2438193 A DE 2438193A DE 2438193 A DE2438193 A DE 2438193A DE 2438193 A1 DE2438193 A1 DE 2438193A1
Authority
DE
Germany
Prior art keywords
channel
cylinder head
oil
cooling
rocker arm
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.)
Granted
Application number
DE2438193A
Other languages
German (de)
Other versions
DE2438193C2 (en
Inventor
Jindrich Dipl Ing Jaluvka
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.)
Tatra np
Original Assignee
Tatra np
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 Tatra np filed Critical Tatra np
Priority to DE19742438193 priority Critical patent/DE2438193C2/en
Publication of DE2438193A1 publication Critical patent/DE2438193A1/en
Application granted granted Critical
Publication of DE2438193C2 publication Critical patent/DE2438193C2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • 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
    • F01P9/04—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00 by simultaneous or alternative use of direct air-cooling and liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/107—Lubrication of valve gear or auxiliaries of rocker shaft bearings
    • 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
    • F01P1/00—Air cooling
    • F01P1/02—Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
    • F01P2001/023—Cooling cylinders
    • 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
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/024—Cooling cylinder heads

Landscapes

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

Abstract

This cooling system is used for improved cooling of cylinder heads of air cooled engines by using engine lubricating oil. A cylinder head is provided with distributor channels and cooling chambers through which oil is pumped under pressure and these are arranged at the hot parts. The oil flows through a channel (1) in the valve push rod (2) and it passes through a rocker arm (6) rocker arm bearing block and into the chamber (13) around the injector (16). The oil flows into the chamber (19) and oil returns to the sump via the opening (24). The temperature of the oil is maintained at a level at which it does not deteriorate. This cooling method can be used for V type engines and also for engines having four valves per cylinder.

Description

Verfahren und Vorrichtung zur Kühlung des Zylinderkopfes von luftgekühlten Brennkraftmaschinen Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Kühlung des Zylinderkopfes von luftgekühlten Brennkraftmaschinen , insbesondere an dessen besonders wärmebeanspruchten Bereichen. Method and device for cooling the cylinder head of air-cooled Internal combustion engines The invention relates to a method and a device for Cooling of the cylinder head of air-cooled internal combustion engines, in particular in areas that are particularly exposed to heat.

Bei bekannten derartigen Verfahren und Vorrichtungen wird für die Kühlung der wärmebeanspruchten Teile in den Zylinderköpfen Luft angewandt, die über Rippenflächen strömt, oder es wird das Öl benutzt, das von den Nocken wellen- bzw. Ventilstößeln frei herabtropft. In known such methods and devices is for Cooling of the heat-stressed parts in the cylinder heads is applied to air passing over Rib surfaces flows, or it is used the oil that is shaft or shaft driven by the cams. Valve tappets dripping freely.

Der Nachteil dieser Ausführungen besteht in der ungenügenden Kühlung durch das abtropfende Öl oder die zwischen den Rippen hindurchströmende Luft. Es können Wärmeüberlastungen des Zylinderkopfes auftreten, die eine Verringerung der Leistungsparameter der Maschine und eine Verkürzung der Lebensdauer bewirken. The disadvantage of these designs is that they are insufficient cooling by the dripping oil or the air flowing through between the ribs. It the cylinder head may be subject to thermal overloads, which will reduce the Cause performance parameters of the machine and a shortening of the service life.

Aufgabe der Erfindung ist es, die Kühlung von Zylinderköpfen zu verbessern und die genannten Nachteile zu vermeiden. The object of the invention is to improve the cooling of cylinder heads and to avoid the disadvantages mentioned.

Die Lösung der Aufgabe besteht in einem Kühlmittelstrom, z. B. The solution to the problem consists in a flow of coolant, e.g. B.

Öl, unter Druck durch Kühlräume der besonders wärmebeanspruchten Teile des Zylinderkopfes, das vom Schmierkreis des Motors geliefert wird. Im Zylinderkopf sind Verteilerkanäle, Sammelkanäle und Kühlräume angeordnet. Das Kühlmittel strömt durch einen Kanal im Ventilstößel, eine Öffnung in der Stößelschraube, einen Kanal im Kipphebel, einen Kanal im Bolzen des Kipphebelbockes, eine Bohrung im hohlen Kipphebelbock, einen Raum im Zylinderkopf, einen Kanal der mit dem Raum um die Einspritzdüse verbunden ist, durch Räume im Boden des Zylinderkopfes, die durch Verteilungskanäle mit einem Sammelkanal verbunden sind, der in eine Öffnung für die Ölabfuhr in das Motorgehäuse mündet. Die Räume im Zylinderkopfboden sind konzentrisch um die Achse der Einspritzdüse und in unmittelbarer Nähe des Auspuffventilsitzes angeordnet.Oil, under pressure through the cold rooms of the parts that are particularly exposed to heat of the cylinder head supplied by the engine's lubrication circuit. In the cylinder head distribution channels, collecting channels and cold rooms are arranged. The coolant flows through a channel in the valve tappet, an opening in the tappet screw, a channel in the rocker arm, a channel in the bolt of the rocker arm bracket, a hole in the hollow Rocker arm bracket, a space in the cylinder head, a channel that connects to the space around the injection nozzle is connected, through spaces in the bottom of the cylinder head, which are through distribution channels are connected to a collecting channel which is inserted into an opening for the oil discharge into the Motor housing opens. The spaces in the bottom of the cylinder head are concentric around the axis the injector and located in the immediate vicinity of the exhaust valve seat.

Im folgenden wird eine Ausführung der Erfindung anhand der Zeichnung genauer beschrieben. Es zeigen: Fig. 1 die Verteilung des Druck-Kühlmittels im Zylinderkopf, Fig. 2 eine Ansicht des Zylinderkopfes von oben, Fig. 3 die Ölführung im Kipphebelbock und im Ventilkipphebel. The following is an embodiment of the invention with reference to the drawing described in more detail. 1 shows the distribution of the pressure coolant in the cylinder head, Fig. 2 is a view of the cylinder head from above, 3 shows the oil guide in the rocker arm bracket and in the valve rocker arm.

Aus Fig. 1, 2 und 3 ist ersichtlich, daß das Drucköl aus dem Motorgehäuse (nicht eingezeichnet) durch einen Kanal 1 in einen Nockenwellenstößel 2 und eine Öffnung 3 in einer Schraube 4 in den Kanal 5 strömt. Dieser ist im Kipphebel 6 des Ventils ausgeführt. Das Öl strömt ferner durch einen Kanal 7 im Bolzen 8 eines Kipphebelbocks 9, durch eine Bohrung 11 in einen Raum 12 im Kipphebelbock 9, durch einen Raum 13 im Zylinderkopf 20, einen Kanal 14 in einen Raum 15. From Fig. 1, 2 and 3 it can be seen that the pressure oil from the engine housing (not shown) through a channel 1 into a camshaft tappet 2 and a Opening 3 in a screw 4 flows into channel 5. This is in the rocker arm 6 of the Valve executed. The oil also flows through a channel 7 in the pin 8 of a rocker arm bracket 9, through a bore 11 into a space 12 in the rocker arm bracket 9, through a space 13 in the cylinder head 20, a duct 14 into a space 15.

der um die Einspritzdüse 16 angeordnet ist und in Räume 19. Diese sind um die Achse 18 einer Einspritzdüse 16 zentrisch im Boden 25 des Zylinderkopfes 20 angeordnet. Aus den Räumen 19 - strömt das Öl durch Verteilerkanäle 21 in einen Sammelkanal 23, durch dessen Öffnung 24 das Öl in das Motorgehäuse zurückgeführt wird. Durch die Bil.which is arranged around the injection nozzle 16 and in spaces 19. This are centered around the axis 18 of an injection nozzle 16 in the bottom 25 of the cylinder head 20 arranged. From the spaces 19 - the oil flows through distribution channels 21 into a Collection channel 23, through the opening 24 of which the oil is returned to the motor housing will. Through the bil.

dung der Räume 15 und 19, des Verteilerkanals 21 und des Sammelkanals 23 wird die Ölabfuhr aus der Umgebung der Einspritzdüse 16, dem Boden 25 des Zylinderkopfes 20 und den Räumen 27 zwischen den Ventilsitzen 22 und 28 gewährleistet und dadurch auch die Kühlung der Einspritzdüse 16, des Bodens 25 und der Räume 27 zwischen den Ventilsitzen 22 und 28. Der Raum 15 um die Einspritzdüse 16 wird durch den Ring 17 gegen Ölabiluß aus dem Raum 15 in den Raum 26 im Zylinderkopf 20 abgedichtet. Der Raum 26 im Zylinderkopf 20 ist durch den Kanal 10 mit der Öffnung 24 verbunden und dient zur Ableitung des von den Nockenwellen- bzw. Ventilstößeln 2 abtropfenden Öls in das Motorgehäuse. Die Tiefe des Raumes 19 ist derart ausgeführt, daß die Temperatur des strömenden Öls in diesen Räumen 19 nicht höher als auf 230 - 240 °C ansteigt, so daß das Öl nicht entwertet wird.tion of the rooms 15 and 19, the distribution channel 21 and the collecting channel 23 is the oil discharge from the vicinity of the injection nozzle 16, the bottom 25 of the cylinder head 20 and the spaces 27 between the valve seats 22 and 28 ensured and thereby also the cooling of the injection nozzle 16, the floor 25 and the spaces 27 between the Valve seats 22 and 28. The space 15 around the injection nozzle 16 is defined by the ring 17 sealed against oil flow from space 15 into space 26 in cylinder head 20. The space 26 in the cylinder head 20 is connected to the opening 24 through the channel 10 and serves to divert the dripping from the camshaft or valve tappets 2 Oil in the motor housing. The depth of the space 19 is designed such that the The temperature of the flowing oil in these spaces 19 is not higher than 230 - 240 ° C rises, so that the oil is not devalued.

Das Verfahren und die Vorrichtung zur Kühlung von Zylinderköpfen luftgekühlter Brennkraftmaschinen, wie dies in der Zeichnung dargestellt ist, soll für Zylinderköpfe bei Motoren in V-Anordnung dienen. The method and the device for cooling cylinder heads air-cooled Internal combustion engines, as shown in the drawing, are intended for cylinder heads for engines in a V-arrangement.

In diesem Fall ist die Einspritzdüse zu der Zylinderkopfachse parallel angeordnet. Diese Einrichtung kann jedoch auch bei Reihenmotoren angewandt werden. Die Verteilerkanäle 21 müssen dann mit einer bestimmten Neigung in Richtung zum Sammelkanal 23 verlaufen. Ferner kann das erfindungsgemäße Verfahren und die zugehörige Vorrichtung auch bei Zylinderköpfen mit mehreren Ventilen angewandt werden, bei denen die Achse der Einspritzdüse in der Achse oder außerhalb der Achse des Zylinderkopfes angeordnet ist.In this case the injector is parallel to the cylinder head axis arranged. However, this device can also be used with in-line engines. The distribution channels 21 must then have a certain inclination in the direction of Collecting channel 23 run. Furthermore, the method according to the invention and the associated Device can also be applied to cylinder heads with multiple valves where the axis of the injector is on the axis or off the axis of the cylinder head is arranged.

Claims (3)

Patentans prüche Patent claims Verfahren zur Kühlung des Zylinderkopfes von luftgekühlten Brennkraftmaschinen, dadurch g e k e n n z e i c h n e t, daß die Kühlräume an wärmebeanspruchten Stellen des Zylinderkopfes von - einem Kühlmittel, z. B. von Öl aus dem Schmierkreis des Motors, unter Druck durchströmt werden. Process for cooling the cylinder head of air-cooled internal combustion engines, in this way, that the cold rooms are located in places exposed to high temperatures of the cylinder head from - a coolant, e.g. B. of oil from the lubrication circuit of the Motor, are flowed through under pressure. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß in dem Zylinderkopf (20) Verteilerkanäle, Sammelkanäle und Kühlräume für den Durchfluß des Kühlme diums angeordnet sind. 2. Apparatus for performing the method according to claim 1, characterized characterized in that in the cylinder head (20) distribution channels, collecting channels and cooling spaces are arranged for the flow of the Kühlme medium. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Durchgang des Kühlmediums durch einen Kanal (1) im Ventilstößel (2), eine Öffnung (3) in einer Schraube (4) einen Kanal (5) im Kipphebel (6) einen Kanal (7) im Bolzen (8) des Kipphebelbokkes (9), eine Bohrung (11), einen Raum (12) im Kipphebelbock (9), einen Raum (13) im Zylinderkopf (20) und einen Kanal (14) erfolgt, daß dieser Kanal (14) mit einem Raum (15) verbunden ist, der um die Einspritzdüse (16) ausgeführt ist, und aus Räumen (19) im Boden (25) des Zylinderkopfes (20) besteht, die durch Verteilerkanäle' (21) mit einem Sammelkanal (23) verbunden sind, der in eine Öffnung (24) für die Abteilung des Öls in das Motorgehäuse mündet und daß die Räume (19) konzentrisch um die Achse (18) der Einspritzdüse (16) und die Verteilerkanäle (21) in unmittelbarer Nähe der Ventilsitze (22, 28) angeordnet sind. 3. Apparatus according to claim 2, characterized in that the passage of the cooling medium through a channel (1) in the valve stem (2), an opening (3) in a Screw (4) a channel (5) in the rocker arm (6) a channel (7) in the bolt (8) of the Rocker arm block (9), a bore (11), a space (12) in the rocker arm block (9), a Space (13) in the cylinder head (20) and a channel (14) takes place that this channel (14) is connected to a space (15) which is designed around the injection nozzle (16), and from spaces (19) in the floor (25) of the cylinder head (20), which through distribution channels' (21) are connected to a collecting channel (23) which is in an opening (24) for the Department of the oil opens into the engine housing and that the spaces (19) are concentric around the axis (18) of the injection nozzle (16) and the distribution channels (21) in the immediate vicinity Near the valve seats (22, 28) are arranged. LeerseiteBlank page
DE19742438193 1974-08-08 1974-08-08 Cylinder head for air-cooled injection internal combustion engines Expired DE2438193C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742438193 DE2438193C2 (en) 1974-08-08 1974-08-08 Cylinder head for air-cooled injection internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742438193 DE2438193C2 (en) 1974-08-08 1974-08-08 Cylinder head for air-cooled injection internal combustion engines

Publications (2)

Publication Number Publication Date
DE2438193A1 true DE2438193A1 (en) 1976-02-26
DE2438193C2 DE2438193C2 (en) 1982-12-16

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141070A1 (en) * 1981-10-16 1983-04-28 Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim Combustion engine with fuel injection and coolable nozzle holder
EP0174664A2 (en) * 1984-09-14 1986-03-19 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175300A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175302A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Oil passage in an internal engine combustion
EP0177799A2 (en) * 1984-09-14 1986-04-16 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
WO2007126562A1 (en) * 2006-04-27 2007-11-08 Caterpillar Inc. Engine and method for operating an engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648930C (en) * 1930-02-06 1937-08-13 Spontan Ab Internal combustion engine with oil cooling
US3063435A (en) * 1960-12-24 1962-11-13 Maschf Augsburg Nuernberg Ag Cylinder head assembly for air-cooled internal combustion engines
US3554171A (en) * 1967-04-22 1971-01-12 Daimler Benz Ag Cylinder head of an air-cooled internal combustion engine
DE1751408A1 (en) * 1968-05-24 1971-07-01 Daimler Benz Ag Cylinder head for especially air-cooled internal combustion engines
DE2158936A1 (en) * 1970-12-31 1972-07-20 Ford-Werke AG, 5000 Köln Valve train for internal combustion engines
DE1626006B2 (en) * 1967-03-06 1973-02-15 Davey Paxman & Co Ltd , Colchester, Essex (Großbritannien) CYLINDER HEAD FOR A WATER-COOLED COMBUSTION ENGINE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648930C (en) * 1930-02-06 1937-08-13 Spontan Ab Internal combustion engine with oil cooling
US3063435A (en) * 1960-12-24 1962-11-13 Maschf Augsburg Nuernberg Ag Cylinder head assembly for air-cooled internal combustion engines
DE1626006B2 (en) * 1967-03-06 1973-02-15 Davey Paxman & Co Ltd , Colchester, Essex (Großbritannien) CYLINDER HEAD FOR A WATER-COOLED COMBUSTION ENGINE
US3554171A (en) * 1967-04-22 1971-01-12 Daimler Benz Ag Cylinder head of an air-cooled internal combustion engine
DE1751408A1 (en) * 1968-05-24 1971-07-01 Daimler Benz Ag Cylinder head for especially air-cooled internal combustion engines
DE2158936A1 (en) * 1970-12-31 1972-07-20 Ford-Werke AG, 5000 Köln Valve train for internal combustion engines

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141070A1 (en) * 1981-10-16 1983-04-28 Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim Combustion engine with fuel injection and coolable nozzle holder
EP0174664A2 (en) * 1984-09-14 1986-03-19 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175300A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175302A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Oil passage in an internal engine combustion
EP0177799A2 (en) * 1984-09-14 1986-04-16 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0177799A3 (en) * 1984-09-14 1987-03-11 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175300A3 (en) * 1984-09-14 1987-03-11 Suzuki Motor Co., Ltd Method ans apparatus for cooling cylinder head of an engine
EP0175302B1 (en) * 1984-09-14 1990-06-13 Suzuki Motor Co., Ltd Oil passage in an internal engine combustion
EP0174664B1 (en) * 1984-09-14 1990-08-22 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
WO2007126562A1 (en) * 2006-04-27 2007-11-08 Caterpillar Inc. Engine and method for operating an engine
US7415946B2 (en) 2006-04-27 2008-08-26 Caterpillar Inc. Engine and method for operating an engine
GB2450294A (en) * 2006-04-27 2008-12-17 Caterpillar Inc Engine and method for operating an engine
JP2009535555A (en) * 2006-04-27 2009-10-01 キャタピラー インコーポレイテッド Engine and method for operating the engine
GB2450294B (en) * 2006-04-27 2010-11-03 Caterpillar Inc Engine and method for operating an engine

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Publication number Publication date
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