DE267317C

DE267317C -

Info

Publication number: DE267317C
Application number: DENDAT267317D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

■■■- M 267317 KLASSE 46 c. GRUPPE■■■ - M 267317 CLASS 46 c. GROUP

Bei Kraftmaschinen mit innerer Verbrennung ist es notwendig, die Zylinderfläche, mit welcher der Kolben in Berührung steht, zu kühlen,In engines with internal combustion, it is necessary to determine the cylinder surface with which the piston is in contact to cool,

., damit sie nicht überhitzt und das Schmiermit-. so that it does not overheat and the lubricant

5- tel nicht zerstört wird. Dies geschieht gewöhnlich dadurch, daß der Zylinder mit einem Wassermantel umgeben wird, der durch einen ringförmigen Raum zwischen dem eigentlichen Zylinder und einem äußeren Gehäuse gebildet5 th is not destroyed. This usually happens in that the cylinder is surrounded by a water jacket through an annular Space is formed between the actual cylinder and an outer housing

ο wird. Bei kleinen Maschinen genügt es, die Hitze durch Luftströme abzuleiten, die an der Außenseite des Zylinders entlang streichen. Es ist ferner notwendig, die Kolben solcher Maschinen zu kühlen. . Bei kleineren Maschinen kann dies durch die Leitung der Wärme vom Kolben zu der damit in Berührung stehenden Zylinderfläche geschehen, während man bei größeren Maschinen den Kolben hohl machen und einen Strom von Wasser oder anderer Flüs-ο will. In the case of small machines, it is sufficient to dissipate the heat by means of air currents that flow through the Brush the outside of the cylinder. It is also necessary to use the pistons of such machines to cool. . In the case of smaller machines, this can be achieved by conducting the heat away from the Piston to the cylinder surface in contact with it happen while one is at larger machines make the piston hollow and a stream of water or other fluids

o sigkeit hindurchschicken muß. o have to send liquid through.

Der Zweck der vorliegenden Erfindung besteht darin, eine einfache Vorrichtung zur Kühlung der Zylinder und Kolben solcher Maschinen zu schaffen, welche die bei gewöhnlichen Wassermantelmaschinen entstehenden Temperaturspannungen infolge der Temperaturverschiedenheit zwischen der inneren und der äußeren Fläche des Zylinders vermeidet, und ferner die verwickelte Konstruktion unnötig macht, die man zum Durchschicken von Wasser durch die innere Höhlung der beweglichen Kolben braucht.The purpose of the present invention is to provide a simple device for cooling the cylinders and pistons of such machines to create the temperature stresses that arise in ordinary water-jacketed machines avoids due to the temperature difference between the inner and outer surfaces of the cylinder, and also the intricate construction eliminates the need to send water through inner cavity of the movable piston needs.

' In der Zeichnung ist ein Ausführungsbeispiel im senkrechten Schnitt durch den Zylinder einer Viertaktmaschine veranschaulicht.'In the drawing is an embodiment in a vertical section through the cylinder of a Four-stroke engine illustrated.

Das Kühlwasser wird durch das Rohr ι in den Wassermantelraum 2 des Zylinderkopfes einge-. führt. Aus diesem Raum tritt das Wasser, zusammen mit dem etwa entstandenen Dampf, durch das Rohr 3 hindurch und dringt in den Raum 6 zwischen dem Maschinenkolben 4 und einem damit gleichachsigen Kolben 5 ein. Letzterer Kolben arbeitet in einem unmittelbar unter dem Arbeitszylinder der Verbrennungskraftmaschine angeordneten Zylinder. Das Wasser kann in den Raum 6 zwischen den KoI-. ben entweder, als Sprühregen oder in einem Strahl eintreten. In jedem Falle wird das Wasser durch die beiden Kolben 4 und 5 bei ihrer raschen Hin- und Herbewegung auf und nieder . geschleudert und bespült sowohl die beiden KoI-ben als auch die Zylinderfläche zwischen ihnen. Die Menge des durch das Rohr 1 zugeführten Wassers wird durch eine geeignete Vorrichtung so geregelt, daß ein großer Teil des in den Raum 6 eintretenden Wassers durch Berührung mit den heißen Flächen der Kolben und der Zylinder verdampft und durch das Rohr 7 abgeführt wird.The cooling water is introduced through the pipe ι into the water jacket space 2 of the cylinder head. leads. The water comes out of this space, together with any steam that may have formed. through the tube 3 and penetrates into the space 6 between the machine piston 4 and a piston 5 coaxial therewith. The latter piston works in an instant cylinder arranged under the working cylinder of the internal combustion engine. That Water can in the space 6 between the KoI-. practice either as a drizzle or in one Enter beam. In any case, the water through the two pistons 4 and 5 at their rapid back and forth movement up and down. hurled and flushed both the two kitties as well as the cylinder surface between them. The amount of the supplied through the pipe 1 Water is regulated by a suitable device so that a large part of the water in the room 6 water entering through contact with the hot surfaces of the pistons and cylinders is evaporated and discharged through the pipe 7.

. Man erkennt, daß durch diese Methode zum Kühlen des Zylinderkörpers die Wärme, die dieser durch die Berührung mit den heißen Gasen während des Arbeitshubes des Motors aufnimmt, von derselben Fläche, welcher die Wärme zugeführt worden ist, auch abgeführt wird, so daß es nicht mehr notwendig ist, die Wärme durch die Dicke der Zylinderwandung dem Wassermantel zuzuführen. Die Temperaturspannungen des Zylinders, die sich bei dem. It can be seen that by this method of cooling the cylinder body, the heat that this through contact with the hot gases during the working stroke of the engine absorbs, also dissipated from the same surface to which the heat has been supplied so that it is no longer necessary to pass the heat through the thickness of the cylinder wall to be fed to the water jacket. The temperature stresses of the cylinder, which are at the

Claims

ordinary cooling procedures are avoided in this way.

.The tandem piston 5 below the working piston 4, which the water 'against the latter splashes, can as in the embodiment. the drawing of the pistons of a single-acting air compression cylinder, which ever according to the ratio of its piston diameter to the diameter of the working piston and the pressure generated either by the whole of the machine. force absorb or 'can only consume part of it. "

The steam and the water which emerge from the pipe 7 can be in a container trespass, in which the steam is separated from the water and diverted to any use will. For example, you can still develop power through the steam. One can also knock down the steam and let the rain water re-enter the pipe and use it again for cooling.

So that the surfaces of the If the cylinder and the piston are properly lubricated, it is advisable to use the cooling water Introduce a small amount of finely powdered graphite, like this one for lubrication purposes is used, and add a small amount of oil or fat, which first is volatile at high temperatures.

The amount of water supplied through the pipe 1 should always be in excess be the one that is necessary to make the cylinder and piston just by evaporation

to cool; the excess of water is discharged through the pipe 7 together with the steam and prevents the formation of solid deposits in the cylinder, which would arise if all the water were to evaporate. It is also desirable to dissolve a small amount of an alkali in the cooling water so that the metal of the cylinder does not rust. . . '

As with four-stroke machines, the cooling process can also be used with machines 4; that work in two-stroke and accordingly at the lower end of the cylinder, arranged Have outlet openings. In this case, a long piston must be used in the working cylinder, which the outlet opening 5 < holds closed when the piston has not assumed its lowest position and prevents the water and steam from escaping through these outlet openings. In In this case the cooling is brought about by the fact that the long bulb is inside comes into contact with the splashed water and dissipates the heat from the cylinder.

Pa te ν τ- claim:

Cooling device for internal combustion engines, in which the working cylinder of Internal combustion engine with a single-acting 'air compression cylinder is combined in a single cylinder, characterized in that 6c in the space a coolant is injected between the two pistons, which is extremely in this space lively movement is added and thereby a particularly extensive, outer 7c Creates cooling that makes water jacket unnecessary.

1 sheet of drawings.