Untitled record

Rotary compressor for explosion engines. There are explosion engines, both four-stroke and two-stroke engines, known, to which the charge is supplied by a rotary compressor. In four-stroke engines so far has the rotary compressor z. B. the task to provide additional air for the cylinder; For two-stroke engines, the compressor is used to supply purge air and atomizing air.

The invention is characterized by an adjustment device by means of which the final volume of the rotary compressor and at the same time its filling volume can be reduced or increased and the compression pressure is maintained at all levels at the same level.

The invention's subject matter is illustrated in the drawing in an 'embodiment.

Fig. A shows a section through the compressor, Fig.2 a schematic; Representation of cylinder filling, which is preferably used in the application of the invention.

The compressor consists of a Z eccentric to Kurbelwellenach-, CL arranged housing a with inlet b and outlet c. Centric to crankshaft axis ° L and therefore eccentric to the housing a is ° in a1; Flywheel acting ring e provided in which by means of rotatably mounted pin, for example, three wings / are arranged radially displaceable. Each wing / has a slider g, which is guided in a circular Tut lt of the fixed housing. The center of the gut lt lies in the axis m of the fixed housing, so that when turning the ring e, the wings f are moved radially outwardly and inwardly to the flywheel. The wings f, which slide on the ZVandungen the compressor housing, promote the compressed air to the cylinders of the explosion engine.

According to the invention, a rotatable sleeve x is arranged adjustable and lockable between the outer ends of the wing find the housing wall, which is provided with different sized passages x1 and x_> inlet and outlet). This arrangement allows any change in the cylinder filling.

As is known, for. As in four-stroke engines, a Drosselungsargan provided on the fuel carburetor, with which the intake volume is controlled, from the smallest volume necessary for ignition to the largest, depending on the volumetric ZVirkung = grade, the u through the channels, valves u. Like. Is determined. However, in the best conditions, the theoretical cylinder volume can not be achieved and there are losses of 6 to 10 percent of the cylinder volume. When throttling the carburetor, the cylinder volume reaches the greater negative pressure in the cylinder, the greater the suction speed, ie the greater the throttling, so that the intake volume, especially at high speeds, decreases significantly. Since now only the stroke volume of burnt gases is squeezed out by the preceding exhaust period and the compression space corresponding constant volume of burned gases remains in the cylinder, the same mixes with the fuel air mixture, so that the respective total volume at the beginning of the compression by the variability of the intake volume also variable is and therefore the final compression, ie When throttling the four-stroke engine has a low compression pressure and thus low explosion pressure, and therefore a low efficiency, which is known to decrease very rapidly with the speed.

By means of the sleeve x according to the invention, it is possible, despite the variable filling volume in two and four-stroke engines, to achieve a constant final pressure of the compression, so that 'the power of the engine is only dependent on the degree of filling. The variability of the filling volume is such that the possibility exists of easily increasing or decreasing the same from the smallest ignitable mixture to the complete stroke volume, even to the total volume including the compression space, without intermediate stages. By this arrangement is thus achieved that in all cases the K.ompressionsenddruck remains the same, so that the efficiency is always relatively high and high performance of the engine corresponds, which is especially necessary for truck engines and stationary, equipment, etc. On the other hand, it is miät this arrangement possible to bring the cylinder filling on the usual during the four-stroke initial volume and to clean the compression chamber of burned gases, ie you can overload the engine of this volume to 35 percent, as z. B. in truck engines with a steep slope is necessary. The arrangement thus allows an extraordinary ability to regulate the filling of the working cylinder for the purpose of partial or complete elimination of the necessary until now necessary speed changes in motor vehicles.

By means of `the rotatable sleeve x is adjusted by adjusting their intake port x1 to the air inlet b, the intake volume from the minimum to the maximum held between two wings volume and this intake accordingly extended or shortened the compression phase.

At the middle of the housing symmetrical position of the two wings f, according to the position illustrated in Fig. I, the left Flügelfan the end edge of the slot x1, ie at the end of the intake; in this position of the wing is the largest of the two wings d and, f intake volume vo, as can be seen from the drawing. If a smaller filling is desired, then the sleeve x is rotated counterclockwise; in this case, an increase in the compression is achieved simultaneously with the reduction of the filling, since the lower control edge of the .Out slit x2 also shifts in the opposite direction of the clockwise direction, wherein the mixture is compressed to a smaller space. So it is achieved despite small filling a larger compression.

In Fig. I, m: it ccl, a2 indicate the angular displacements of the bush x corresponding to the different volumes.

Fig. 1 also shows that at the position of the bush x between the blades d and f 1, the volume v 1 is included, which corresponds to a cylinder charge of 100% (see Fig. 2). Furthermore, it can be seen that when adjusting the sleeve by the angle a1 between the Flügelstellungtd., And f1 a Volumenv. which corresponds to a 66 percent fill of the cylinder. Closing is the 33% cylinder filling corresponding volume v3 included between the Flügelstellungd3 and f2 and results after further adjustment of the sleeve x by the angle a2.