EP0063809A2 - Four-valve cylinder head for an internal-combustion engine - Google Patents
Four-valve cylinder head for an internal-combustion engine Download PDFInfo
- Publication number
- EP0063809A2 EP0063809A2 EP82103513A EP82103513A EP0063809A2 EP 0063809 A2 EP0063809 A2 EP 0063809A2 EP 82103513 A EP82103513 A EP 82103513A EP 82103513 A EP82103513 A EP 82103513A EP 0063809 A2 EP0063809 A2 EP 0063809A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- cooling
- outlet
- inlet
- valve cylinder
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- F02F1/28—Cylinder heads having cooling means for air cooling
- F02F1/30—Finned cylinder heads
- F02F1/32—Finned cylinder heads the cylinder heads being of overhead valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
-
- 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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- 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
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/18—DOHC [Double overhead camshaft]
-
- 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 four-valve cylinder head for a four-stroke engine.
- Powerful four-stroke engines should, among other things, have the smallest possible combustion chamber, since the ignition front is compact and this also results in small and thick flame paths. However, if the combustion chamber is made correspondingly small, the heat-absorbing surface also becomes correspondingly small, i.e. the engine runs much hotter.
- the object of the invention is therefore to provide particularly good cooling and very good heat exchange on a four-valve cylinder head for a four-stroke engine with a small, compact combustion chamber. According to the invention, this is achieved in a four-valve cylinder head for a four-stroke engine by the features in the characterizing part of claim 1.
- An advantageous development of the invention is specified in the subclaim.
- the cylinder head according to the invention has a part with a relatively large material cross-section above the combustion chamber, ie between the inlet and the outlet, through which a relatively large, heat-absorbing surface and thus a good heat exchange result between the relatively cool inlet side and the very hot outlet side Combustion chamber is reached over the part with the large material cross section to the rest of the cylinder head.
- a straight passage which on the outlet side, ie viewed in the direction of travel in front, has the shape of a funnel-shaped storage space which narrows towards the cylinder interior and which narrows at the end of the funnel-shaped storage space
- Storage space inside the cylinder is expanded in the area of the spark plug and ends on the side of the inlet in a relatively small opening between the cooling fins.
- a lateral suction opening that widens conically outwards branches off at the middle part of the straight passage, approximately at the level of the spark plug.
- the ribs arranged in the area of the very hot exhaust side i.e. the ribs lying at the front in the direction of travel, the cylinder head are formed considerably lower than the ribs provided on the relatively cool inlet side.
- the part with the large mate lies above the combustion chamber rialquerites achieved a good heat exchange between the inlet and the outlet, and by the funnel-shaped design of the passage above the outlet, the air is accelerated accordingly, so that there is a particularly intense heat transfer to the air.
- This cooling effect is then intensified by the suction caused by the head wind through the side opening, so that this and, in addition, the very deeply formed ribs on the exhaust side create a very well-cooled cylinder head with a particularly good, material-conserving heat exchange inside.
- FIG. 1 to 3 show different sectional views through a left-hand cylinder head of a four-stroke boxer engine with camshafts located below.
- bearing blocks 7 for holding fork rocker arms (not shown in more detail) for two inlet and outlet valves are shown, which are guided by tappets guided in dash-dot lines, very short pushrods and other plungers engaging at their lower ends are actuated by the camshaft below.
- bores 12 for the valves and valve seats 121 are shown in FIG.
- a part 17 of the cylinder head is formed with a large material cross section, through which a good heat exchange between the relatively cool inlet side 3 and the very hot outlet side 2 of the cylinder head 1 is created.
- part of a funnel-shaped stowage space 41 of a passage 4 as well as the rear, ie part of the enlarged central part 42 of the passage 4 on the engine block side can be seen.
- Relatively short cooling fins 14 are formed on the cylinder head 1 above the inlet 3.
- FIG. 2 In the sectional view of FIG. 2, which is approximately perpendicular to the view in FIG. 1, the small outlet opening 43 of the passage 4 is shown on the inlet side.
- a stepped bore 5 extends from the enlarged middle part 42 of the passage 4, into which a spark plug inserted from above via an insertion opening 51 can be screwed, the ignition electrode of which then lies in the combustion chamber 6.
- the stepped bore 5 for inserting the spark plug passes through the part 17 of the cylinder head 1 which has a relatively large cross section.
- a bore 11 for a fastening bolt is formed in the left part of the cylinder head 1 in FIG.
- the funnel-shaped storage space 41 of the passage 4 arranged above the outlet 2 is provided, which widens into the middle part 42 after a narrowing.
- One of these middle parts branches laterally outwards, that is to say from the engine block opposite side, conically widening suction opening 45. 3 also shows graded bores 11 for the fastening bolts, bores 12 for the valve guide and bores 13 for the tappet guide.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Zur Kühlung eines Vierventil-Zylinderkopfes für einen Viertaktmotor und insbesondere zur Kühlung eines über dem Brennraum liegenden, einen grossen Materialquerschnitt aufweisenden Teils des Zylinderkopfes ist zwischen dessen Auslass und dessen Einlass ein gerade verlaufender, zur Auslassseite hin trichterförmig ausgebildeter und sich in seinem mittleren Teil erweiternder Durchgang vorgesehen, von dessen mittleren Teil auf Höhe der Zündkerze eine seitliche, sich nach aussen hin konisch verbreiternde Ansaugöffnung abzweigt. Hierbei sind zur Vergrösserung der wärmeabgebenden Fläche die auslassseitigen Kühlrippen des Zylinderkopfes wesentlich tiefer ausgebildet als die einlassseitig angeordneten Kühlrippen.For cooling a four-valve cylinder head for a four-stroke engine, and in particular for cooling a part of the cylinder head that lies above the combustion chamber and has a large material cross section, there is a straight passage between its outlet and its inlet, which is funnel-shaped towards the outlet side and widens in its middle part provided, from the central part at the level of the spark plug branches off a lateral suction opening that widens conically outwards. In order to enlarge the heat-emitting surface, the cooling ribs on the exhaust side of the cylinder head are formed much lower than the cooling ribs arranged on the intake side.
Description
Die Erfindung betrifft einen Vierventil-Zylinderkopf für einen Viertaktmotor.The invention relates to a four-valve cylinder head for a four-stroke engine.
Leistungsstarke Viertaktmotore sollen unter anderem einen möglichst kleinen Brennraum aufweisen, da die Zündfront kompakt wird und sich dadurch auch kleine und dicke Flammwege ergeben. Wenn jedoch der Brennraum entsprechend klein ausgebildet ist, wird dadurch auch die wärmeaufnehmende Fläche entsprechend klein, d.h. der Motor läuft wesentlich heißer.Powerful four-stroke engines should, among other things, have the smallest possible combustion chamber, since the ignition front is compact and this also results in small and thick flame paths. However, if the combustion chamber is made correspondingly small, the heat-absorbing surface also becomes correspondingly small, i.e. the engine runs much hotter.
Aufgabe der Erfindung ist es daher, an einem Vierventil-Zylinderkopf für einen Viertaktmotor mit einem kleinen kompakten Brennraum eine besonders gute Kühlung und einen sehr guten Wärmeaustausch zu schaffen. Gemäß der Erfindung ist dies bei einem Vierventil-Zylinderkopf für einen Viertaktmotor durch die Merkmale im kennzeichnenden Teil des Anspruchs 1 erreicht. Eine vorteilhafte Weiterbildung der Erfindung ist in dem Unteranspruch angegeben.The object of the invention is therefore to provide particularly good cooling and very good heat exchange on a four-valve cylinder head for a four-stroke engine with a small, compact combustion chamber. According to the invention, this is achieved in a four-valve cylinder head for a four-stroke engine by the features in the characterizing part of
Der erfindungsgemäße Zylinderkopf weist über dem Brennraum, d.h. zwischen dem Einlaß und Auslaß,' einen Teil mit einem verhältnismäßig großen Materialquerschnitt auf, durch den zwischen der verhältnismäßig kühlen Einlaßseite und der sehr heißen Auslaßseite eine verhältnismäßig große, wärmeaufnehmende Fläche und damit ein guter Wärmeaustausch von dem Brennraum über den Teil mit dem großen Materialquerschnitt zu dem übrigen Zylinderkopf erreicht ist. Zur Kühlung des gesamten Zylinderkopfes und insbesondere zur Kühlung des einen großen Materialquerschnitt aufweisenden Teils des Zylinderkopfes ist zwischen dessen Einlaß und dessen Auslaß über dem Teil mit dem großen Materialquerschnitt ein gerade verlaufender Durchlaß gebildet,_der auf der Auslaßseite, d.h. in Fahrtrichtung gesehen vorne, die Form eines sich zum Zylinderinneren hin verengenden, trichterförmigen Stauraums hat, der sich nach einer Verengung am Ende des trichterförmigen Stauraums im Zylinderinneren im Bereich der Zündkerze erweitert und auf der Seite des Einlasses in eine verhältnismäßig kleine öffnung zwischen den Kühlrippen endet. Ferner zweigt am mittleren Teil des gerade verlaufenden Durchganges etwa auf Höhe der Zündkerze eine seitliche, sich nach außen hin konisch erweiternde Absaugöffnung ab.The cylinder head according to the invention has a part with a relatively large material cross-section above the combustion chamber, ie between the inlet and the outlet, through which a relatively large, heat-absorbing surface and thus a good heat exchange result between the relatively cool inlet side and the very hot outlet side Combustion chamber is reached over the part with the large material cross section to the rest of the cylinder head. For cooling the entire cylinder head and in particular for cooling the part of the cylinder head which has a large material cross section, there is between it Inlet and its outlet above the part with the large material cross-section formed a straight passage, which on the outlet side, ie viewed in the direction of travel in front, has the shape of a funnel-shaped storage space which narrows towards the cylinder interior and which narrows at the end of the funnel-shaped storage space Storage space inside the cylinder is expanded in the area of the spark plug and ends on the side of the inlet in a relatively small opening between the cooling fins. Furthermore, a lateral suction opening that widens conically outwards branches off at the middle part of the straight passage, approximately at the level of the spark plug.
Während der Fahrt wird dann durch den Fahrtwind über den vorne über dem Auslaß ausgebildeten trichterförmigen Stauraum Kühlluft in den Zylinderkopf hineingepreßt, der zu einem verhältnismäßig geringen Teil durch die enge einlaßseitige öffnung abfließt. Gleichzeitig wird durch die seitlich am Zylinderkopf entlangströmende Luft über die seitliche Abzweigung eine Saugwirkung auf die ins Innere des Zylinderkopfes gepreßte Luft ausgeübt, so daß dann diese Luft aufgrund einer Art "Venturi-Düseneffekt" aus dem Inneren des Zylinderkopfes abgesaugt wird, wodurch in Verbindung mit der über dem Einlaß abströmenden Luft insgesamt ein hoher Luftdurchsatz erreicht ist. Hierdurch wird neben dem Zylinderkopfinneren gleichzeitig auch noch die Kerze mitgekühlt.During the journey, cooling air is then pressed into the cylinder head by the airstream via the funnel-shaped storage space formed at the front above the outlet, which air flows out to a relatively small extent through the narrow inlet-side opening. At the same time, the air flowing along the side of the cylinder head exerts a suction effect on the air pressed into the interior of the cylinder head, so that this air is then sucked out of the interior of the cylinder head due to a kind of "Venturi nozzle effect", which in connection with the air flowing out through the inlet has reached a high air throughput. As a result, the candle is also cooled along with the inside of the cylinder head.
Zur weiteren Verbesserung der Kühlung des Zylinderkopfes sind die im Bereich der sehr heißen Auslaßseite angeordneten Rippen, d.h. die in Fahrtrichtung vorne liegenden Rippen, des Zylinderkopfes erheblich tiefer ausgebildet als die auf der verhältnismäßig kühlen Einlaßseite vorgesehenen Rippen.To further improve the cooling of the cylinder head, the ribs arranged in the area of the very hot exhaust side, i.e. the ribs lying at the front in the direction of travel, the cylinder head are formed considerably lower than the ribs provided on the relatively cool inlet side.
Somit ist bei dem erfindungsgemäßen Zylinderkopf durch den über dem Brennraum liegenden Teil mit dem großen Materialquerschnitt ein guter Wärmeaustausch zwischen dem Einlaß und dem Auslaß erreicht, und durch die trichterförmige Ausbildung des Durchganges über dem Auslaß wird die Luft entsprechend stark beschleunigt, so daß dadurch ein besonders intensiver Wärmeübergang zur Luft gegeben ist. Diese Kühlwirkung wird dann noch durch den durch den Fahrtwind hervorgerufenen Sog über die seitliche öffnung verstärkt, so daß hierdurch und zusätzlich noch über die auslaßseitig besonders tief ausgebildeten Rippen ein sehr gut gekühlter Zylinderkopf mit einem besonders guten, das Material schonenden Wärmeaustausch im Inneren geschaffen ist.Thus, in the cylinder head according to the invention, the part with the large mate lies above the combustion chamber rialquerschnitt achieved a good heat exchange between the inlet and the outlet, and by the funnel-shaped design of the passage above the outlet, the air is accelerated accordingly, so that there is a particularly intense heat transfer to the air. This cooling effect is then intensified by the suction caused by the head wind through the side opening, so that this and, in addition, the very deeply formed ribs on the exhaust side create a very well-cooled cylinder head with a particularly good, material-conserving heat exchange inside.
Die Erfindung wird nunmehr anhand einer bevorzugten Ausführungsform der Erfindung im einzelnen erläutert. Es zeigen:
In den Fig.1 bis 3 sind verschiedene Schnittansichten durch einen linksseitigen Zylinderkopf eines Viertakt-Boxermotors mit unten liegenden Nockenwellen dargestellt. Im oberen Teil der Fig.1 sind Lagerböcke 7 zum Haltern von nicht näher dargestellten Gabelkipphebeln für zwei Ein- und Auslaßventile wiedergegeben, die über in strichpunktiert dargestellten Bohrungen geführte Stößel, sehr kurze Stößelstangen und an deren unteren Enden angreifende weitere Stößel durch die unten liegende Nockenwelle betätigt werden. Ferner sind in Fig.1 Bohrungen 12 für die Ventile sowie Ventilsitze 121 dargestellt. Zwischen dem Auslaß 2 und dem Einlaß 3, in denen jeweils die Kanalgabelungen 21 bzw. 31 angedeutet sind, ist ein Teil 17 des Zylinderkopfes mit einem großen Materialquerschnitt ausgebildet, durch den ein guter Wärmeaustausch zwischen der verhältnismäßig kühlen Einlaßseite 3 und der sehr heißen Auslaßseite 2 des Zylinderkopfes 1 geschaffen ist. In Fig.1 ist über dem Auslaß 2 ein Teil eines trichterförmigen Strauraums 41 eines Durchgangs 4 sowie der hintere, d.h. motorblockseitige Teil des erweiterten Mittelteils 42 des Durchlasses 4 zu erkennen. über dem Einlaß 3 sind am Zylinderkopf 1 verhältnismäßig kurze Kühlrippen 14 ausgebildet.1 to 3 show different sectional views through a left-hand cylinder head of a four-stroke boxer engine with camshafts located below. In the upper part of FIG. 1, bearing
In der zur Ansicht der Fig.1 etwa senkrecht verlaufenden Schnittansicht der Fig.2 ist die einlaßseitig ausgebildete, kleine Austrittsöffnung 43 des Durchgangs 4 dargestellt. Von dem erweiterten Mittelteil 42-des Durchgangs 4 erstreckt sich eine abgestufte Bohrung 5, in die eine über eine Einführöffnung 51 von oben eingeführte Zündkerze eingeschraubt werden kann, deren Zündelektrode dann in der Brennkammer 6 liegt. Die abgestufte Bohrung 5 zum Einsetzen der Zündkerze geht durch den einen verhältnismäßig großen Querschnitt aufweisenden Teil 17 des Zylinderkopfes 1 hindurch. Ferner ist in Fig.2 im linken Teil des Zylinderkopfes 1 eine Bohrung 11 für einen Befestigungsbolzen ausgebildet.In the sectional view of FIG. 2, which is approximately perpendicular to the view in FIG. 1, the small outlet opening 43 of the passage 4 is shown on the inlet side. A
Fig.3, in welcher eine Schnittansicht entlang der Linie A-A in Fig.1 wiedergegeben ist, ist der über dem Auslaß 2 angeordnete, trichterförmige Stauraum 41 des Durchgangs 4 vorgesehen, der sich nach einer Verengung in den Mittelteil 42 erweitert. Von diesem Mittelteil zweigt seitlich eine sich nach außen hin, d.h. zu der vom Motorblock abgewandten Seite hin, konisch erweiterende Absaugöffnung 45 ab. Ferner sind in Fig.3 noch abgestufte Bohrungen 11 für die Befestigungsbolzen, Bohrungen 12 für die Ventilführung sowie Bohrungen 13 zur Stößelführung dargestellt.3, in which a sectional view along the line AA is shown in FIG. 1, the funnel-
Obwohl die Erfindung vorstehend anhand eines Zylinderkopfes eines Viertakt-Boxermotors mit unten liegender Nockenwelle dargestellt ist, ist sie selbstverständlich nicht auf Zylinderköpfe für solche Motore beschränkt, sondern ist unter entsprechender Abwandlung genauso gut bei jeder anderen Ausführungsform von Zylinderköpfen anwendbar, beispielsweise auch bei solchen für aufrechtstehende Zylinder mit beispielsweise einer oben liegenden Nockenwelle.Although the invention is illustrated above with reference to a cylinder head of a four-stroke boxer engine with a camshaft at the bottom, it is of course not restricted to cylinder heads for such engines, but, with a corresponding modification, can equally well be used with any other embodiment of cylinder heads, for example also those for upright ones Cylinder with an overhead camshaft, for example.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3116802A DE3116802C2 (en) | 1981-04-28 | 1981-04-28 | Four-valve cylinder head for a four-stroke engine |
| DE3116802 | 1981-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0063809A2 true EP0063809A2 (en) | 1982-11-03 |
| EP0063809A3 EP0063809A3 (en) | 1983-04-06 |
Family
ID=6130983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82103513A Ceased EP0063809A3 (en) | 1981-04-28 | 1982-04-26 | Four-valve cylinder head for an internal-combustion engine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4484542A (en) |
| EP (1) | EP0063809A3 (en) |
| JP (1) | JPS5896146A (en) |
| AU (1) | AU8240082A (en) |
| DE (1) | DE3116802C2 (en) |
| ES (1) | ES264772Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0103051A2 (en) * | 1982-09-15 | 1984-03-21 | KRAUSER Kraftfahrzeug-Zubehör Vertriebs-GmbH | Device for operating two or four valves of a four-stroke engine |
| WO1989005910A1 (en) * | 1987-12-22 | 1989-06-29 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with a cross-flow cylinder head, in particular an air-cooled single cylinder head for internal combustion engines for motorcycles |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0616013B2 (en) * | 1984-11-22 | 1994-03-02 | 肇産業株式会社 | Automatic inspection device |
| JPS61247816A (en) * | 1985-04-24 | 1986-11-05 | Yanmar Diesel Engine Co Ltd | Cooling apparatus for internal-combustion engine |
| US8677955B2 (en) * | 2010-01-04 | 2014-03-25 | Westrom Engineering, Llc | Single poppet valve cylinder head assembly for internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB516787A (en) * | 1938-07-07 | 1940-01-11 | Bristol Aeroplane Co Ltd | Improvements relating to the cooling fins of air-cooled internal-combustion engines |
| DE966214C (en) * | 1952-04-17 | 1957-07-18 | Kloeckner Humboldt Deutz Ag | Cylinder head for internal combustion engines |
| DE975228C (en) * | 1952-04-17 | 1961-10-12 | Kloeckner Humboldt Deutz Ag | Air-cooled cylinder head for internal combustion engines |
| GB1039777A (en) * | 1964-02-17 | 1966-08-24 | Cunewalde Motoren | Cylinder head for air-cooled internal combustion engines |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH233261A (en) * | 1942-12-31 | 1944-07-15 | Porsche Kg | Cylinder head for air-cooled internal combustion engines. |
| US2725045A (en) * | 1950-12-06 | 1955-11-29 | Kloeckner Humboldt Deutz Ag | Air cooled cylinder head for diesel engines |
| GB699554A (en) * | 1951-01-02 | 1953-11-11 | Porsche Konstruktionen Gmbh | Improvements in the cylinder heads of air-cooled internal combustion engines |
| CS170589B1 (en) * | 1974-01-24 | 1976-09-15 |
-
1981
- 1981-04-28 DE DE3116802A patent/DE3116802C2/en not_active Expired
-
1982
- 1982-04-06 AU AU82400/82A patent/AU8240082A/en not_active Abandoned
- 1982-04-20 US US06/370,121 patent/US4484542A/en not_active Expired - Fee Related
- 1982-04-26 EP EP82103513A patent/EP0063809A3/en not_active Ceased
- 1982-04-26 JP JP57070179A patent/JPS5896146A/en active Pending
- 1982-04-27 ES ES1982264772U patent/ES264772Y/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB516787A (en) * | 1938-07-07 | 1940-01-11 | Bristol Aeroplane Co Ltd | Improvements relating to the cooling fins of air-cooled internal-combustion engines |
| DE966214C (en) * | 1952-04-17 | 1957-07-18 | Kloeckner Humboldt Deutz Ag | Cylinder head for internal combustion engines |
| DE975228C (en) * | 1952-04-17 | 1961-10-12 | Kloeckner Humboldt Deutz Ag | Air-cooled cylinder head for internal combustion engines |
| GB1039777A (en) * | 1964-02-17 | 1966-08-24 | Cunewalde Motoren | Cylinder head for air-cooled internal combustion engines |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0103051A2 (en) * | 1982-09-15 | 1984-03-21 | KRAUSER Kraftfahrzeug-Zubehör Vertriebs-GmbH | Device for operating two or four valves of a four-stroke engine |
| EP0103051A3 (en) * | 1982-09-15 | 1984-09-05 | KRAUSER Kraftfahrzeug-Zubehör Vertriebs-GmbH | Device for operating two or four valves of a four-stroke engine |
| WO1989005910A1 (en) * | 1987-12-22 | 1989-06-29 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with a cross-flow cylinder head, in particular an air-cooled single cylinder head for internal combustion engines for motorcycles |
Also Published As
| Publication number | Publication date |
|---|---|
| ES264772Y (en) | 1983-05-16 |
| JPS5896146A (en) | 1983-06-08 |
| US4484542A (en) | 1984-11-27 |
| ES264772U (en) | 1982-11-16 |
| EP0063809A3 (en) | 1983-04-06 |
| DE3116802A1 (en) | 1982-11-04 |
| DE3116802C2 (en) | 1983-05-05 |
| AU8240082A (en) | 1982-11-04 |
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Inventor name: KRAUSER, MICHAEL |