EP1066456A1 - Air-cooled internal combustion engine with a crankshaft which rotates about a vertical axis, especially a single cylinder diesel motor - Google Patents
Air-cooled internal combustion engine with a crankshaft which rotates about a vertical axis, especially a single cylinder diesel motorInfo
- Publication number
- EP1066456A1 EP1066456A1 EP99917899A EP99917899A EP1066456A1 EP 1066456 A1 EP1066456 A1 EP 1066456A1 EP 99917899 A EP99917899 A EP 99917899A EP 99917899 A EP99917899 A EP 99917899A EP 1066456 A1 EP1066456 A1 EP 1066456A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling air
- internal combustion
- combustion engine
- cylinder
- air
- 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
Links
Classifications
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- 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
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
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- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/06—Guiding or ducting air to, or from, ducted fans
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- 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
- F02B75/007—Other engines having vertical crankshafts
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- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Definitions
- Air-cooled internal combustion engine with a crankshaft rotating around a vertical axis in particular a single-cylinder diesel engine
- the invention relates to an air-cooled internal combustion engine with a crankshaft rotating about a vertical axis, in particular a single-cylinder diesel engine, with an encapsulation which encloses cooling air ducts.
- Air-cooled engines with a vertical shaft in the installed position are usually Otto engines for special applications, e.g. B. as drives for lawn mowers, agricultural equipment or the like. , where through the vertical shaft deflection gear can be saved or a particularly low device height can be realized.
- Such drives are usually not designed for continuous use; their power range is usually between 2 and 5 kW.
- Known small diesel engines for industrial applications are generally stationary engines, that is to say those with a crankshaft rotating in the installed position about a horizontal axis, which are of robust construction, enable multifunctional use and are often provided with noise protection capsules to protect the environment from excessive noise emissions are.
- the output range of such industrial diesel engines extends for single-cylinder diesel engines up to an upper limit of approx. 12 kW, with a stroke volume of 700 to 750 cm 3 .
- the aim of the present invention is to provide a diesel engine suitable for industrial use for horizontal installation, i.e. to create with a vertical shaft, which is particularly suitable for applications where a low overall height or low center of gravity is important and which is nevertheless universally applicable, d.
- H. Has power take-off points on both ends of the motor housing and is suitable for connecting different hydraulic pumps and gearboxes; in addition, the engine should have an important cooling feature for industrial use, including an efficient cooling system, even when encapsulated; finally, the manufacturing effort should also be low.
- An engine which, as a single-cylinder diesel engine with a vertical shaft, has the stated properties and thus solves the above-mentioned comprehensive task, has the features according to the characterizing part of claim 1.
- a flywheel cooling fan which is characterized by a sufficient amount of cooling air, which has an air distribution housing which surrounds the flywheel cooling fan and at the same time that flywheel-side connection housing forms, is distributed according to a two-flow cooling system.
- two cooling air partial flows are branched off from the air distribution housing on the pressure side, one of which is led over the cylinder and cylinder head section and thus cools those engine components which are loaded with the process heat through the combustion process or come into direct contact with hot exhaust gases; the other cooling air partial flow is used to cool the engine oil, which is used in the engine as a lubricant and coolant; accordingly, it is routed around the crankcase and along the oil pan on the underside of the engine case.
- the two partial cooling air flows whose distribution ratio is approximately 2: 1, the smaller partial flow being sufficient for oil cooling, are finally collected and discharged in a common exhaust duct.
- the first partial flow of cooling air is passed essentially through a housing capsule which surrounds the cylinder and cylinder head, these components being washed around by two branch flows which are brought together again on the outflow side.
- the second partial flow of cooling air is passed under a cladding on the ribbed outer sides first along a side wall of the crankcase, then along the oil pan, the side wall corresponding to the bottom of the crankcase when the engine is stopped and the oil pan being attached to the underside thereof, through the outer wall of the control housing Motor is formed.
- a particularly simple hooding of the invention with two cooling air partial flows cooled engine achieved in that they open on the downstream side into a common exhaust duct, from where they are discharged to the outside.
- Such a special component is a new oil pan with cooling fins on the outside and with connecting elements for the sealing connection to an existing control housing, whereby on the side of the control housing, in which, among other things, Regulator and oil pump are housed, certain modifications for the connection of the oil pan may be appropriate.
- Another special component is designed as a cooling fin-carrying component which is screwed onto the outside of the side wall of the crankcase with the largest possible common contact surface.
- the components mentioned serve to support the heat transfer from the crankcase and the oil pan into the second partial cooling air stream, which is passed over the ribbed components under an appropriate cladding. Accordingly, these components are made of aluminum to reduce weight and because of the good heat conduction, preferably.
- a particularly favorable cooling effect results from the horizontal engine arrangement, in particular, in that the cooled side wall of the crankcase, under which the oil sump is located when the engine is at a standstill, is strong on the inside by the spray oil of the crank mechanism is applied, which leads to a particularly favorable heat transfer.
- the drawing shows a vertical section of a single-cylinder diesel engine in its normal installation position, the axis of the crankshaft 1 running vertically.
- the balancing weights 27 and the connecting rod 28 with the piston 29 can be seen.
- the cylinder 10 is shown schematically with corresponding cooling fins;
- the cylinder head 11 is seated on the cylinder 10.
- a valve 31 can be seen inside the cylinder head cover 30.
- the crankshaft 1 is in corresponding bearings in the upper end wall 2 and the lower end wall 15 of the crankcase stored.
- a flywheel in the form of a radial fan 3 is flanged, which is arranged in the interior of an air distribution housing 4.
- the air distribution housing 4 is attached to the outside of the upper end wall 2 of the crankcase. It forms a pressure chamber 5 around the fan rotor.
- the intake air flowing in between the fan blades according to arrows AI passes through the pressure chamber 5 through an opening 8 as the first cooling air partial flow L 1 into a housing capsule 21 which surrounds the cylinder 10 and cylinder head 11.
- a second sub-flow of cooling air L2 flows from the pressure chamber 5 through its opening 9 into cooling-air ducts inside a side panel 22 and inside a lower panel 23. Behind the side panel 22, the second sub-stream of cooling air L2 flows between ribs 24 of the side wall 12 of the crankcase, which are on the inside with it Spray oil is applied according to the arrows S1. The second partial cooling air flow L2 continues to flow between the ribs 25 of the oil pan 13, which is fastened to the outer wall 26 of the control housing.
- an oil pump 32 which is connected via a suction line 33 to a strainer 34 on the bottom of the oil sump in the oil pan 13.
- the spray oil gets back into the oil pan through corresponding oil return openings in the lower end wall 15 of the crankcase and further through the oil-permeable control housing 14.
- the ribs 25 of the oil pan run 13 laterally around this bearing point without causing a disturbance in the air flow.
- the second cooling air partial flow L2 leaves the ribs 25 of the oil pan 13 according to arrow 19 and unites in the interior of the housing capsule 21 on its outlet side with the first cooling air partial flow Ll opening there according to arrows 18. From there the united stream Partial cooling air flows according to arrow 20 through an exhaust duct to the outside.
- the first partial cooling air stream L1 is divided into two branch streams while it washes around the cylinder 10 and cylinder head 11 before it emerges together with the second partial cooling air stream L2 through the exhaust duct according to arrow 20.
- the two cooling circuits thus describe flow paths which run essentially parallel to the drawing plane before they collect in the exhaust duct and leave it in the direction of arrow 20.
- a flow around the motor housing in a plane perpendicular to the drawing plane does not take place, as is self-explanatory due to the known design of such motors.
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 an air-cooled internal combustion engine with a crankshaft which rotates about a vertical axis, especially a single cylinder diesel motor. Said internal combustion engine has an encapsulation which surrounds the cooling air channels. The flywheel is positioned at the top end of the crankshaft (1), said flywheel being combined with a radial blower (3). An air distribution housing (4) which is joined to the top front wall (2) of the crankcase forms the pressure chamber (5) of the radial blower (3). At least two sub-streams of cooling air branch off from said pressure chamber (5), a first sub-stream (L1) being guided through a housing encapsulation (21) which surrounds the cylinder (10) and the cylinder head (11) and a second sub-stream (L2) being guided in a lining (22) on the outside of the side wall (12) of the crankcase and the oil pan (13) facing the cylinder. Both sub-streams of cooling air (L1, L2) are collected on the downstream side and exit through a common air-extractor shaft.
Description
Luftgekühlter Verbrennungsmotor mit um eine vertikale Achse rotierender Kurbelwelle, insbesondere Einzylinder-Dieselmotor Air-cooled internal combustion engine with a crankshaft rotating around a vertical axis, in particular a single-cylinder diesel engine
Die Erfindung betrifft einen luftgekühlten Verbrennungsmotor mit um eine vertikale Achse rotierender Kurbelwelle, insbesondere einen Einzylinder-Dieselmotor, mit einer Kapselung, welche Kühlluftkanäle umschließt.The invention relates to an air-cooled internal combustion engine with a crankshaft rotating about a vertical axis, in particular a single-cylinder diesel engine, with an encapsulation which encloses cooling air ducts.
Bei luftgekühlten Motoren mit in der Einbaulage vertikaler Welle handelt es sich üblicherweise um Otto-Motoren für spezielle Anwendungen, z. B. als Antriebe für Rasenmäher, landwirtschaftliche Geräte oder dgl . , wo durch die vertikale Welle Umlenkgetriebe eingespart werden können bzw. eine besonders niedrige Gerätebauhöhe verwirklicht werden kann. Derartige Antriebe sind in der Regel nicht für den Dauereinsatz konzipiert; ihr Leistungsbereich liegt gewöhnlich zwischen 2 und 5 kW.Air-cooled engines with a vertical shaft in the installed position are usually Otto engines for special applications, e.g. B. as drives for lawn mowers, agricultural equipment or the like. , where through the vertical shaft deflection gear can be saved or a particularly low device height can be realized. Such drives are usually not designed for continuous use; their power range is usually between 2 and 5 kW.
Bei bekannten Kleindieselmotoren für industrielle Anwendungen handelt es sich in der Regel um stehende Motoren, d. h. solche mit in der Einbaulage um eine horizontale Achse rotierender Kurbelwelle, welche robust gebaut sind, einen multifunktionellen Einsatz ermöglichen und häufig mit Lärmschutzkapseln zum Schutz der Umgebung vor übermäßiger Lärmemission versehen sind. Der Leistungsbereich derartiger Industrie-Dieselmotoren erstreckt sich bei Einzylinder- Dieselmotoren bis zu einer Obergrenze von ca. 12 kW, bei einem Hubvolumen von 700 bis 750 cm3.Known small diesel engines for industrial applications are generally stationary engines, that is to say those with a crankshaft rotating in the installed position about a horizontal axis, which are of robust construction, enable multifunctional use and are often provided with noise protection capsules to protect the environment from excessive noise emissions are. The output range of such industrial diesel engines extends for single-cylinder diesel engines up to an upper limit of approx. 12 kW, with a stroke volume of 700 to 750 cm 3 .
Bei einem in US-PS 4964378 beschriebenen ölgekühlten Einzylindermotor mit liegender Einbaulage gemäß dem Oberbegriff von Anspruch 1 ist eine teilweise Kapselung für eine zusätzliche Luftkühlung vorgesehen. Von einem Kühlluf gebläse am oberen Ende der Kurbelwelle wird einIn an oil-cooled single-cylinder engine described in US Pat. No. 4,964,378 with a horizontal mounting position according to the preamble of claim 1, partial encapsulation is provided for additional air cooling. From a cooling air blower at the top of the crankshaft
BESΛπGUNGSKDPtt
Kühlluftstrom abgezweigt, der entlang Rippen des; Kurbelgehäuses geleitet wird; ein zweiter Kühlluftstrom wird durch eine Gehäusekapsel geleitet, welche Zylinder und Zylinderkopf einhüllt. Beide Kühlluftströme werden getrennt abgeführt. An seiner Unterseite, wo sich das untere Ende der Kurbelwelle befindet, fehlt eine Kapselung des Motorgehäuses; dort wirkt lediglich die Ölkühlung, unterstützt durch gerippte Gehäuse- wände. Somit ist der bekannte Motor auf eine Kombination von Öl- und Luftkühlung angewiesen, was mit einem hohen Fertigungsaufwand verbunden ist.BESΛπGUNGSKDPtt Cooling air flow branched off along the ribs of the; Crankcase is passed; a second flow of cooling air is passed through a housing capsule, which envelops the cylinder and cylinder head. Both cooling air flows are discharged separately. On its underside, where the lower end of the crankshaft is located, there is no encapsulation of the engine housing; only the oil cooling works there, supported by ribbed housing walls. Thus, the known engine relies on a combination of oil and air cooling, which is associated with a high manufacturing effort.
Demgegenüber besteht das Ziel der vorliegenden Erfindung darin, einen für die industrielle Anwendung geeigneten Dieselmotor für den liegenden Einbau, d.h. mit vertikaler Welle zu schaffen, der sich für Anwendungen besonders eignet, bei denen es auf geringe Bauhöhe oder niedrige Schwerpunktsläge ankommt und welcher trotzdem universell einsetzbar ist, d. h. Kraftabnahmestellen an beiden Stirnseiten des Motorgehäuses besitzt und für den Anschluß unterschiedlicher Hydraulikpumpen und Getriebe geeignet ist; außerdem soll der Motor als weiteres wichtiges Merkmal für die industrielle Anwendung ein effizientes Kühlsystem auch bei gekapselter Ausführung aufweisen; schließlich soll auch noch der Herstellungsaufwand niedrig sein.In contrast, the aim of the present invention is to provide a diesel engine suitable for industrial use for horizontal installation, i.e. to create with a vertical shaft, which is particularly suitable for applications where a low overall height or low center of gravity is important and which is nevertheless universally applicable, d. H. Has power take-off points on both ends of the motor housing and is suitable for connecting different hydraulic pumps and gearboxes; in addition, the engine should have an important cooling feature for industrial use, including an efficient cooling system, even when encapsulated; finally, the manufacturing effort should also be low.
Ein Motor, welcher als Einzylinder-Dieselmotor mit vertikaler Welle die genannten Eigenschaften aufweist und damit die vorstehende umfassende Aufgabe löst, besitzt die Merkmale gemäß dem Kennzeichen von Anspruch 1.An engine which, as a single-cylinder diesel engine with a vertical shaft, has the stated properties and thus solves the above-mentioned comprehensive task, has the features according to the characterizing part of claim 1.
Demnach besitzt er eine Zuluftführung mittels eines Schwungradkühlgebläses, welches sich durch eine ausreichende Kühl- luftmenge auszeichnet, die über ein Luftverteilungsgehäuse, welches das Schwungradkühlgebläse umgibt und gleichzeitig das
schwungradseitige Anschlußgehäuse bildet, nach einem Zwei- stromkühlsystem verteilt wird. In diesem Sinne werden druckseitig vom Luftverteilungsgehäuse zwei Kühlluftteilströme abgezweigt, von denen einer über die Zylinder- und Zylinderkopfpartie geführt wird und damit diejenigen Motorkomponenten kühlt, die durch den Verbrennungsvorgang mit der Prozeßwärme belastet sind bzw. mit heißen Abgasen direkt in Berührung kommen; der andere Kühlluf teilstrom dient der Kühlung des Motoröls, welches im Motor als Schmier- und Kühlmittel eingesetzt wird; er wird dementsprechend um das Kurbelgehäuse herum und entlang der Ölwanne an der Unterseite des Motorgehäuses geleitet.Accordingly, it has an air supply by means of a flywheel cooling fan, which is characterized by a sufficient amount of cooling air, which has an air distribution housing which surrounds the flywheel cooling fan and at the same time that flywheel-side connection housing forms, is distributed according to a two-flow cooling system. In this sense, two cooling air partial flows are branched off from the air distribution housing on the pressure side, one of which is led over the cylinder and cylinder head section and thus cools those engine components which are loaded with the process heat through the combustion process or come into direct contact with hot exhaust gases; the other cooling air partial flow is used to cool the engine oil, which is used in the engine as a lubricant and coolant; accordingly, it is routed around the crankcase and along the oil pan on the underside of the engine case.
Die beiden Kühlluftteilströme, deren Verteilungsverhältnis etwa 2:1 beträgt, wobei der kleinere Teilstrom für die Ölkühlung ausreicht, werden schließlich in einem gemeinsamen Abluftschacht gesammelt und abgeführt .The two partial cooling air flows, whose distribution ratio is approximately 2: 1, the smaller partial flow being sufficient for oil cooling, are finally collected and discharged in a common exhaust duct.
Dabei wird in an sich bekannter Weise der erste Kühlluftteil- ström im wesentlichen durch eine Gehäusekapsel geleitet, welche Zylinder und Zylinderkopf umgibt, wobei diese Bauteile durch zwei Zweigströme umspült werden, die auf der Abströmseite wieder zusammengeführt werden.In this case, in a manner known per se, the first partial flow of cooling air is passed essentially through a housing capsule which surrounds the cylinder and cylinder head, these components being washed around by two branch flows which are brought together again on the outflow side.
Der zweite Kühlluftteilstrom wird unter einer Verkleidung an den verrippten Außenseiten zunächst entlang einer Seitenwand des Kurbelgehäuses, danach entlang der Ölwanne geleitet, wobei die Seitenwand dem Boden des Kurbelgehäuses bei stehendem Motor entspricht und wobei die Ölwanne an dessen Unterseite angebaut ist, die durch die Steuergehäuseaußenwand des Motors gebildet ist.The second partial flow of cooling air is passed under a cladding on the ribbed outer sides first along a side wall of the crankcase, then along the oil pan, the side wall corresponding to the bottom of the crankcase when the engine is stopped and the oil pan being attached to the underside thereof, through the outer wall of the control housing Motor is formed.
Im Rahmen der Erfindung wird eine besonders einfache Verhaubung des erfindungsgemäß mit zwei Kühlluftteilströmen
gekühlten Motors dadurch erreicht, daß diese abströmseitig in einen gemeinsamen Abluftschacht münden, von wo sie nach außen abgeleitet werden.In the context of the invention, a particularly simple hooding of the invention with two cooling air partial flows cooled engine achieved in that they open on the downstream side into a common exhaust duct, from where they are discharged to the outside.
Für einen derartigen liegenden Motor kann sich dessen Herstellung mit einem speziellen Motorgehäuse als zweckmäßig erweisen; es kann aber ökonomischer sein, ein bereits vorhandenes Motorgehäuse zu verwenden und dieses durch spezielle Bauteile zu ergänzen.For such a horizontal motor, its manufacture with a special motor housing can prove to be useful; However, it can be more economical to use an existing motor housing and to supplement it with special components.
Ein derartiges spezielles Bauteil ist eine neue Ölwanne mit Kühlrippen an ihrer Außenseite und mit Verbindungselementen für den dichtenden Anschluß an ein vorhandenes Steuergehäuse, wobei auf der Seite des Steuergehäuses, in welchem u.a. Regler und Ölpumpe untergebracht sind, gewisse Modifizierungen für den Anschluß der Ölwanne zweckmäßig sein können.Such a special component is a new oil pan with cooling fins on the outside and with connecting elements for the sealing connection to an existing control housing, whereby on the side of the control housing, in which, among other things, Regulator and oil pump are housed, certain modifications for the connection of the oil pan may be appropriate.
Ein anderes spezielles Bauteil ist als Kühlrippen tragendes Bauteil ausgebildet, welches mit möglichst großer gemeinsamer Anlagefläche an der Außenseite der Seitenwand des Kurbelgehäuses angeschraubt ist .Another special component is designed as a cooling fin-carrying component which is screwed onto the outside of the side wall of the crankcase with the largest possible common contact surface.
Die genannten Bauteile dienen der Unterstützung des Wärmeübergangs aus dem Kurbelgehäuse und der Ölwanne in den zweiten Kühlluftteilstrom, der unter einer entsprechenden Verkleidung über die verrippten Bauteile geleitet wird. Dementsprechend bestehen diese Bauteile zur Gewichts- reduzierung und wegen der guten Wärmeleitung bevorzugt aus Aluminium. Eine besonders günstige Kühlwirkung ergibt sich infolge der liegenden Motoranordnung insbesondere dadurch, daß die gekühlte Seitenwand des Kurbelgehäuses, unter welcher sich bei stehendem Motor der Ölsumpf befindet, an ihrer Innenseite durch das Spritzöl des Kurbeltriebs stark
beaufschlagt wird, was zu einem besonders günstigen Wärmeübergang führt .The components mentioned serve to support the heat transfer from the crankcase and the oil pan into the second partial cooling air stream, which is passed over the ribbed components under an appropriate cladding. Accordingly, these components are made of aluminum to reduce weight and because of the good heat conduction, preferably. A particularly favorable cooling effect results from the horizontal engine arrangement, in particular, in that the cooled side wall of the crankcase, under which the oil sump is located when the engine is at a standstill, is strong on the inside by the spray oil of the crank mechanism is applied, which leads to a particularly favorable heat transfer.
Durch diesen verbesserten Wärmeübergang verbunden mit der vorteilhaften Führung der beiden Kühlluftteilströme über entsprechend verrippte Bauteile, womit vorliegend neben der Kühlrippen an Zylinder und Zylinderkopf auch die genannten speziellen Bauteile gemeint sind, gelingt es im Vergleich zu entsprechend stehend eingebauten Motoren eine Absenkung der Öltemperatur um bis zu 35°C zu erreichen, wobei eine Gesamt- zuluftmenge von ca. 10 m3/min zugrundegelegt wird.This improved heat transfer combined with the advantageous routing of the two partial cooling air streams via appropriately ribbed components, which in the present case also means the special components mentioned in addition to the cooling fins on the cylinder and cylinder head, enables the oil temperature to be reduced by up to in comparison to appropriately installed engines To reach 35 ° C, based on a total supply air volume of approx. 10 m 3 / min.
Mit der erfindungsgemäß verwirklichten besonders effizienten Luftkühlung, die mit einer besonders niedrigen Öltemperatur einhergeht, lassen sich Applikationen unter hoher Dauerlast und bei extremen Umweltbedingungen bei hoher Betriebszeit des Motoröls verwirklichen, was zu einer wünschenswerten Verlängerung der Wartungsintervalle ührt.With the particularly efficient air cooling realized according to the invention, which goes hand in hand with a particularly low oil temperature, applications under high continuous load and in extreme environmental conditions with high operating time of the engine oil can be realized, which leads to a desirable extension of the maintenance intervals.
Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung erläutert, welche einen schematischen Querschnitt durch die Motorachse zeigt .An exemplary embodiment of the invention is explained below with reference to the drawing, which shows a schematic cross section through the motor axis.
Die Zeichnung zeigt im Vertikalschnitt einen Einzylinder- Dieselmotor in seiner normalen Einbaulage, wobei die Achse der Kurbelwelle 1 vertikal verläuft. In Verbindung mit der Kurbelwelle 1 erkennt man die Ausgleichsmassen 27 sowie das Pleuel 28 mit dem Kolben 29. Um den Kolben 29 ist schematisch der Zylinder 10 mit entsprechenden Kühlrippen dargestellt; auf dem Zylinder 10 sitzt der Zylinderkopf 11. Innerhalb des Zylinderkopfdeckels 30 erkennt man ein Ventil 31.The drawing shows a vertical section of a single-cylinder diesel engine in its normal installation position, the axis of the crankshaft 1 running vertically. In connection with the crankshaft 1, the balancing weights 27 and the connecting rod 28 with the piston 29 can be seen. Around the piston 29, the cylinder 10 is shown schematically with corresponding cooling fins; The cylinder head 11 is seated on the cylinder 10. A valve 31 can be seen inside the cylinder head cover 30.
Die Kurbelwelle 1 ist in entsprechenden Lagern der oberen Stirnwand 2 und der unteren Stirnwand 15 des Kurbelgehäuses
gelagert. Am oberen Ende der Kurbelwelle 1 ist ein Schwungrad in Form eines Radialgebläses 3 angeflanscht, welches im Inneren eines Luftverteilungsgehäuses 4 angeordnet ist. Das Luftverteilungsgehäuse 4 ist an der Außenseite der oberen Stirnwand 2 des Kurbelgehäuses befestigt. Es bildet um den Gebläserotor herum einen Druckraum 5. Die zwischen den Gebläseschaufeln gemäß Pfeilen AI einströmende Ansaugluft gelangt über den Druckraum 5 durch eine Öffnung 8 als erster Kühlluftteilstrom Ll in eine Gehäusekapsel 21, welche Zylinder 10 und Zylinderkopf 11 umgibt. Ein zweiter Kühlluftteilstrom L2 gelangt vom Druckraum 5 durch dessen Öffnung 9 in Kühlluftkanäle innerhalb einer seitlichen Verkleidung 22 und innerhalb einer unteren Verkleidung 23. Hinter der seitlichen Verkleidung 22 strömt der zweite Kühlluftteilstrom L2 zwischen Rippen 24 der Seitenwand 12 des Kurbelgehäuses, welche auf ihrer Innenseite mit Spritzöl gemäß den Pfeilen Sl beaufschlagt wird. Der zweite Kühlluftteilstrom L2 strömt weiter zwischen den Rippen 25 der Ölwanne 13, welche an der Steuergehäuseaußenwand 26 befestigt ist. Im Steuergehäuse 14 sitzt eine Ölpumpe 32, welche über eine Ansaugleitung 33 mit einem Sieb 34 auf dem Grund des Ölsumpfs in der Ölwanne 13 verbunden ist . Das Spritzöl gelangt wieder in die Ölwanne durch entsprechende Ölrückführungsöffnungen in der unteren Stirnwand 15 des Kurbelgehäuses und weiter durch das öldurch- lässige Steuergehäuse 14. Im Bereich des abtriebsseitigen Wellenlagers 16, in welchem die Verlängerung 17 der Kurbelwelle gelagert ist, verlaufen die Rippen 25 der Ölwanne 13 seitlich um diese Lagerstelle herum, ohne daß es dabei zu einer Störung der Luftströmung kommt. Der zweite Kühlluftteilstrom L2 verläßt gemäß Pfeil 19 die Rippen 25 der Ölwanne 13 und vereinigt sich im Inneren der Gehäusekapsel 21 auf deren Auslaßseite mit dem dort gemäß Pfeilen 18 mündenden ersten Kühlluftteilstrom Ll . Von dort strömen die vereinigten
Kühlluftteilströme gemäß Pfeil 20 durch einen Abluftschacht nach außen.The crankshaft 1 is in corresponding bearings in the upper end wall 2 and the lower end wall 15 of the crankcase stored. At the upper end of the crankshaft 1, a flywheel in the form of a radial fan 3 is flanged, which is arranged in the interior of an air distribution housing 4. The air distribution housing 4 is attached to the outside of the upper end wall 2 of the crankcase. It forms a pressure chamber 5 around the fan rotor. The intake air flowing in between the fan blades according to arrows AI passes through the pressure chamber 5 through an opening 8 as the first cooling air partial flow L 1 into a housing capsule 21 which surrounds the cylinder 10 and cylinder head 11. A second sub-flow of cooling air L2 flows from the pressure chamber 5 through its opening 9 into cooling-air ducts inside a side panel 22 and inside a lower panel 23. Behind the side panel 22, the second sub-stream of cooling air L2 flows between ribs 24 of the side wall 12 of the crankcase, which are on the inside with it Spray oil is applied according to the arrows S1. The second partial cooling air flow L2 continues to flow between the ribs 25 of the oil pan 13, which is fastened to the outer wall 26 of the control housing. In the control housing 14 there is an oil pump 32 which is connected via a suction line 33 to a strainer 34 on the bottom of the oil sump in the oil pan 13. The spray oil gets back into the oil pan through corresponding oil return openings in the lower end wall 15 of the crankcase and further through the oil-permeable control housing 14. In the area of the output-side shaft bearing 16, in which the extension 17 of the crankshaft is mounted, the ribs 25 of the oil pan run 13 laterally around this bearing point without causing a disturbance in the air flow. The second cooling air partial flow L2 leaves the ribs 25 of the oil pan 13 according to arrow 19 and unites in the interior of the housing capsule 21 on its outlet side with the first cooling air partial flow Ll opening there according to arrows 18. From there the united stream Partial cooling air flows according to arrow 20 through an exhaust duct to the outside.
Aus der Zeichnung wird ferner deutlich, daß der erste Kühlluftteilstrom Ll sich in zwei Zweigströme aufteilt, während er Zylinder 10 und Zylinderkopf 11 umspült, bevor er zusammen mit dem zweiten Kühlluftteilstrom L2 durch den Abluftschacht gemäß Pfeil 20 austritt. Die beiden Kühlkreisläufe beschreiben somit Strömungswege, welche im wesentlichen parallel zur Zeichenebene verlaufen, bevor sie sich im Abluftschacht sammeln und diesen in Richtung des Pfeils 20 verlassen. Eine Umströmung des Motorgehäuses in einer Ebene senkrecht zur Zeichenebene findet nicht statt, wie sich aufgrund des bekannten Aufbaus derartiger Motoren von selbst erklärt .
From the drawing it is also clear that the first partial cooling air stream L1 is divided into two branch streams while it washes around the cylinder 10 and cylinder head 11 before it emerges together with the second partial cooling air stream L2 through the exhaust duct according to arrow 20. The two cooling circuits thus describe flow paths which run essentially parallel to the drawing plane before they collect in the exhaust duct and leave it in the direction of arrow 20. A flow around the motor housing in a plane perpendicular to the drawing plane does not take place, as is self-explanatory due to the known design of such motors.
Claims
Patentansprücheclaims
Luftgekühlter Verbrennungsmotor mit um eine vertikale Achse rotierender Kurbelwelle, insbesondere Einzylinder-Dieselmotor, mit einer Kapselung, welche Kühlluftkanäle umschließt, und mit folgenden Merkmalen:Air-cooled internal combustion engine with a crankshaft rotating about a vertical axis, in particular a single-cylinder diesel engine, with an encapsulation which encloses cooling air ducts, and with the following features:
1.1 auf dem oberen Ende der Kurbelwelle (1) sitzt das Schwungrad, welches mit einem Radialgebläse (3) kombiniert ist;1.1 on the upper end of the crankshaft (1) sits the flywheel, which is combined with a radial fan (3);
1.2 ein auf der oberen Stirnwand (2) des Kurbelgehäuses angeschlossenes Luftverteilungsgehäuse (4) bildet den Druckraum (5) des Radialgebläses (3);1.2 an air distribution housing (4) connected to the upper end wall (2) of the crankcase forms the pressure chamber (5) of the radial fan (3);
1.3 aus dem Druckraum (5) zweigen wenigstens zwei Kühlluftteilströme ab, von denen1.3 from the pressure chamber (5) branch off at least two cooling air partial flows, one of which
1.3.1 ein erster Kühlluftteilstrom (Ll) durch eine Gehäusekapsel (21) , welche Zylinder1.3.1 a first cooling air partial flow (Ll) through a housing capsule (21), which cylinders
(10) und Zylinderkopf (11) umgibt, geleitet wird, und(10) and cylinder head (11) surrounds, is directed, and
1.3.2 ein zweiter Kühlluftteilstrom (L2) innerhalb einer Verkleidung (22) an der Außenseite der dem Zylinder gegenüberliegenden Seitenwand (12) des Kurbelgehäuses geleitet wird gekennzeichnet durch die folgenden Merkmale :1.3.2 a second partial cooling air flow (L2) is conducted within a casing (22) on the outside of the side wall (12) of the crankcase opposite the cylinder, characterized by the following features:
1.4 dem unteren Ende der Kurbelwelle (1) ist der Steuerdeckel (14) zugeordnet, an dessen Außenseite die Ölwanne (13) befestigt ist;1.4 the control cover (14) is assigned to the lower end of the crankshaft (1), on the outside of which the oil pan (13) is fastened;
1.5 der zweite Külluftstrom (L2) wird innerhalb einer Verkleidung (23) an der Außenseite der Ölwanne (13) geleitet;
1.5 the second cooling air flow (L2) is conducted inside a casing (23) on the outside of the oil pan (13);
1.6 beide Kühlluftteilströme (Ll, L2 ) ;werden abströmseitig gesammelt und strömen durch einen gemeinsamen Abluftschacht aus;1.6 both cooling air partial flows (Ll, L2); are collected on the outflow side and flow out through a common exhaust duct;
1.7 der Abluftschaft grenzt an die Abströmseite des Innenraums der Zylinder (10) und Zylinderkopf (11) umgebenden Gehäusekapsel (21) an.1.7 of the exhaust shaft adjoins the housing capsule (21) surrounding the outflow side of the interior of the cylinder (10) and cylinder head (11).
Verbrennungsmotor nach Anspruch 1, dadurch gekennzeichnet, daß der erste Kühlluftteilstrom (Ll) durchInternal combustion engine according to claim 1, characterized in that the first cooling air partial flow (Ll) through
Zylinder (10) und Zylinderkopf (11) in zwei dieseCylinder (10) and cylinder head (11) in two of these
Bauteile umspülende Zweigströme geteilt ist, welche auf der Abströmseite wieder zusammengeführt werden .Branch streams washing components is divided, which are brought together again on the outflow side.
Verbrennungsmotor nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Kühlluftteilstrom (L2) durch das abtriebsseitige Wellenlager (16) in zwei daran seitlich vorbeigeführte Zweigströme geteilt ist, welche auf der Abströmseite wieder zusammengeführt werden .Internal combustion engine according to claim 1, characterized in that the second partial cooling air flow (L2) is divided by the shaft bearing (16) on the output side into two branch flows which are guided past it and which are brought together again on the outflow side.
Verbrennungsmotor nach Anspruch 1, dadurch gekennzeichnet, daß der Druckraum (5) im Luftverteilungsgehäuse (4) als Umfangskanal innerhalb seiner seitlichen Außenkontur ausgebildet ist, der seitliche Austrittsöffnungen (8, 9) für die beiden Kühlluftteilströme (Ll, L2) aufweist.
10Internal combustion engine according to claim 1, characterized in that the pressure chamber (5) in the air distribution housing (4) is designed as a circumferential channel within its lateral outer contour, which has lateral outlet openings (8, 9) for the two partial cooling air flows (L1, L2). 10
5. Verbrennungsmotor nach Anspruch 1 , dadurch gekennzeichnet, daß innerhalb der Verkleidung (22, 23) für den zweiten Kühlluftteilstrom (L2) in Strömungsrichtung verlaufende Kühlrippen (24, 25) auf der Seitenwand (12) des Kurbelgehäuses und/oder auf der Außenseite der Ölwanne (13) vorgesehen sind.5. Internal combustion engine according to claim 1, characterized in that within the casing (22, 23) for the second cooling air partial flow (L2) in the flow direction cooling fins (24, 25) on the side wall (12) of the crankcase and / or on the outside of the Oil pan (13) are provided.
6. Verbrennungsmotor nach Anspruch 1 , dadurch gekennzeichnet, daß die Ölwanne (13) als gesondertes mit Kühlrippen (25) an ihrer Außenseite und mit Verbindungselementen für den dichtenden Anschluß an die Außenwand (26) des Steuergehäuses (14) versehenes Bauteil ausgebildet ist.6. Internal combustion engine according to claim 1, characterized in that the oil pan (13) is designed as a separate component with cooling fins (25) on its outside and with connecting elements for the sealing connection to the outer wall (26) of the control housing (14).
7. Verbrennungsmotor nach Anspruch 1 , dadurch gekennzeichnet, daß an der Außenseite der Seitenwand (12) des Kurbelgehäuses ein gesondertes, Kühlrippen (24) ausbildendes Bauteil mit großer gemeinsamer Anlagefläche angeschraubt ist.
7. Internal combustion engine according to claim 1, characterized in that on the outside of the side wall (12) of the crankcase, a separate cooling fins (24) forming component is screwed with a large common contact surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813624A DE19813624B4 (en) | 1998-03-27 | 1998-03-27 | Air-cooled internal combustion engine with a crankshaft rotating around a vertical axis, in particular a single-cylinder diesel engine |
| DE19813624 | 1998-03-27 | ||
| PCT/EP1999/002126 WO1999050542A1 (en) | 1998-03-27 | 1999-03-29 | Air-cooled internal combustion engine with a crankshaft which rotates about a vertical axis, especially a single cylinder diesel motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1066456A1 true EP1066456A1 (en) | 2001-01-10 |
| EP1066456B1 EP1066456B1 (en) | 2002-11-06 |
Family
ID=7862596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99917899A Expired - Lifetime EP1066456B1 (en) | 1998-03-27 | 1999-03-29 | Air-cooled internal combustion engine with a crankshaft which rotates about a vertical axis, especially a single cylinder diesel motor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6405690B1 (en) |
| EP (1) | EP1066456B1 (en) |
| JP (1) | JP3556905B2 (en) |
| DE (2) | DE19813624B4 (en) |
| WO (1) | WO1999050542A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19813624B4 (en) | 1998-03-27 | 2004-11-11 | Motorenfabrik Hatz Gmbh & Co Kg | Air-cooled internal combustion engine with a crankshaft rotating around a vertical axis, in particular a single-cylinder diesel engine |
| EP1167524B1 (en) * | 1999-03-19 | 2007-05-16 | Takara Bio Inc. | Method for amplifying a nucleic acid sequence employing a chimeric primer |
| SI21093A (en) * | 2001-12-20 | 2003-06-30 | Boris Kunc | Air-cooled outboard diesel motor |
| DE10240198B4 (en) * | 2002-08-28 | 2004-08-19 | Werner Kress | mowing machine |
| WO2006017884A1 (en) * | 2004-08-16 | 2006-02-23 | John Arthur Notaras | Multi-purpose internal combustion engine platform and parts thereof |
| JP2006307690A (en) * | 2005-04-27 | 2006-11-09 | Kioritz Corp | Power unit |
| US7357112B2 (en) * | 2005-07-12 | 2008-04-15 | Hugr Systems, Inc. | Method for reorienting a horizontal shaft diesel engine to vertical operation |
| DE102008037045A1 (en) * | 2008-08-08 | 2010-03-04 | Motorenfabrik Hatz Gmbh & Co. Kg | electric vehicle |
| US8104559B2 (en) * | 2008-09-22 | 2012-01-31 | Clark Equipment Company | Multiple air flow paths using single axial fan |
| JP6340809B2 (en) * | 2014-02-12 | 2018-06-13 | スズキ株式会社 | Engine cooling structure |
| MX2018001383A (en) * | 2017-02-01 | 2018-11-29 | Tvs Motor Co Ltd | Cooling system for internal combusion engine. |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2516312A (en) * | 1945-06-28 | 1950-07-25 | Continental Motors Corp | Cooling system for internalcombustion engines |
| US2875745A (en) * | 1953-05-26 | 1959-03-03 | Cornelius W Van Ranst | Gasoline engine |
| US3183899A (en) | 1962-11-14 | 1965-05-18 | Outboard Marine Corp | Chaff-proof air intake arrangement |
| DE2439808A1 (en) * | 1974-08-20 | 1976-03-04 | Motoren Werke Mannheim Ag | REFRIGERATOR |
| DE2735491C2 (en) * | 1977-08-05 | 1982-11-25 | Wolf-Geräte GmbH, 5240 Betzdorf | Motor lawn mower |
| US4432309A (en) * | 1982-02-09 | 1984-02-21 | Deere & Company | Cooling system for air-cooled engine |
| US4540888A (en) * | 1983-09-12 | 1985-09-10 | Kohler Company | Vertical shaft engine generator set for a recreational vehicle or the like |
| US5000126A (en) * | 1986-10-01 | 1991-03-19 | Yamaha Kogyo Hatsudoki Kabushiki Kaisha | Vertical engine for walk-behind lawn mower |
| JPH0442493Y2 (en) * | 1987-12-28 | 1992-10-07 | ||
| JPH0786324B2 (en) * | 1988-03-03 | 1995-09-20 | 川崎重工業株式会社 | Engine cooling system |
| DE19813624B4 (en) | 1998-03-27 | 2004-11-11 | Motorenfabrik Hatz Gmbh & Co Kg | Air-cooled internal combustion engine with a crankshaft rotating around a vertical axis, in particular a single-cylinder diesel engine |
-
1998
- 1998-03-27 DE DE19813624A patent/DE19813624B4/en not_active Expired - Fee Related
-
1999
- 1999-03-29 WO PCT/EP1999/002126 patent/WO1999050542A1/en active IP Right Grant
- 1999-03-29 JP JP2000541415A patent/JP3556905B2/en not_active Expired - Fee Related
- 1999-03-29 US US09/647,263 patent/US6405690B1/en not_active Expired - Fee Related
- 1999-03-29 DE DE59903320T patent/DE59903320D1/en not_active Expired - Lifetime
- 1999-03-29 EP EP99917899A patent/EP1066456B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9950542A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1066456B1 (en) | 2002-11-06 |
| DE59903320D1 (en) | 2002-12-12 |
| JP3556905B2 (en) | 2004-08-25 |
| US6405690B1 (en) | 2002-06-18 |
| WO1999050542A1 (en) | 1999-10-07 |
| DE19813624B4 (en) | 2004-11-11 |
| JP2002510012A (en) | 2002-04-02 |
| DE19813624A1 (en) | 1999-09-30 |
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