Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
  • F01C1/00—Rotary-piston machines or engines
  • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
  • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
  • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
  • F01C1/20—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with dissimilar tooth forms

Definitions

• the invention relates to an internal combustion engine and to a compressor or compressed air motor.
• the invention is based on the object of specifying a combustion engine and a compressor or a compressed air motor with at least one rotating piston which, with a simple structure and a high power density, has Offers the possibility of balancing the piston or pistons, so that high speeds of up to several 10,000 revolutions are possible.
• an internal combustion engine is created with
• a basic housing which has a working space with a substantially circular cross section
• a working disc which rotates in the working space about its central axis and which has a cross section such that a sealing gap is produced between the working disc and the wall of the working space
• a filling and extension space with at least one inlet and one outlet slot and also with a circular cross-section, the center of which lies outside the working space and is at a distance from the center of the working space which is smaller than the sum of the radius of the Working space and the radius of the filling and extension space, and which is connected to the working area,
• control disc which rotates in the filling and extension space around its central axis and whose outer contour is selected such that it forms a sealing gap both with the boundary wall of the filling and extension space and the working plate
• a combustion chamber with a likewise circular cross-section, the center of which lies outside the work space and is at a distance from the center of the work space which is smaller than the sum of the radius of the work space and the radius of the combustion space and which is connected to the work space, a combustion chamber disc located in the combustion rotates roughly around its central axis, and the outer contour of which is selected such that it forms a sealing gap with both the boundary wall of the combustion chamber and the working disk, in which the working disk and the combustion chamber disk rotate in the same direction and the working disk and the control disk rotate in opposite directions.
• a compressed air motor or a compressor can be obtained by omitting the combustion chamber.
• FIG. 2 shows a modification of the motor according to the invention, which works as a compressor or compressed air motor.
• FIGS. 1 An embodiment of an engine according to the invention is shown in two positions in FIGS.
• the internal combustion engine has a basic housing 1 which has a working space 2 with an essentially circular cross section.
• a working disk 3 rotates in the working space 2 about its central axis 2 '- preferably with it high speed.
• the outer contour or the cross section of the working disk 3 is selected such that there is a sealing gap between the working disk 3 and the wall of the working space 2.
• the working disk can approximately have the shape of a hypocycloid distorted in the circumferential direction - stretched by a factor of 2. This results in different volumes of the individual spaces formed at different positions of the working disk (FIGS. 1 a and 1 b).
• a filling and ejecting space 4 is provided with at least one inlet and one outlet slot 5 or 6, which is connected to the working space.
• the filling and discharge space 4 also has a circular cross section.
• the center of the room 4 lies outside of the work space 2 and has a distance from the center of the work space that is smaller than the sum of the radius of the work space and the radius of the filling and extension space.
• a control disk 7 rotates about its central axis 4 'at half the speed of the working disk 3.
• the outer contour of the control disk 7 is selected so that it both with the boundary wall of the filling and pushing out area 4 and the working disk 3 forms a sealing gap.
• the center distance from the working disc is to be selected so that there is a favorable geometry for the slots 5 and 6 to be covered for the inlet and outlet controls.
• a combustion chamber 8 with a circular cross section is also provided, the center of which is outside the working space and is at a distance from the center of the working space which is smaller than the sum of the radius of the working space and the radius of the combustion chamber. is space, and which is connected to the work space.
• a combustion chamber disc 9 rotates at half the speed of the working disc 3 about its central axis.
• the outer contour of the combustion chamber disk 9 is selected such that it forms a sealing gap both with the boundary wall of the combustion chamber and with the working disk.
• the combustion chamber disk 9 consists of two flat parallel surfaces which are connected to one another by two radii of curvature.
• the distance between the axis of rotation of the working disc and the combustion chamber disc is equal to the sum of the maximum radius of the working disc and the radius of curvature plus the dimension of the sealing gap.
• At least one spark plug 10 is arranged in a recess in the combustion chamber.
• the spark plug is preferably in the middle of the combustion chamber and, like a Wankel engine, must not protrude into it.
• the working disk and the combustion chamber disk rotate in the same direction, while the working disk and the control disk rotate in opposite directions. This means that four work cycles are achieved with one revolution of the working disc.
• the working disk 3 has recesses or cutouts, not shown, so that its center of mass lies on the axis of rotation 2 '.
• the speed limit of the motor is therefore only limited by the strength of the working disc and not by bearing forces. Furthermore, an almost vibration-free operation is possible. Due to the high speed and the resulting high mass throughput, it is possible to switch to non-contact gap seals. The resulting loss is high at low speeds and decreases with increasing speed. It is crucial for the efficiency of the machine to keep the gaps, which change due to centrifugal forces and temperature expansion, deliberately small (similar problem as with turbines and compressors).
• the motor according to the invention is therefore particularly suitable for applications with constant speed, such as, for example, as an aircraft engine.
• Different compression ratios can be realized by changing the center distance between the combustion chamber disc and the working disc and changing the length of the combustion chamber disc. In principle, if the compression ratio is increased, the throughput decreases (and vice versa).
• the pulleys can be controlled by a simple gear, which can consist, for example, of gear wheels and pulleys. It is only important that the transmission is decoupled from the expansions of the housing in such a way that an angular error of the disks relative to one another is as small as possible (gap retention).
• the mixture can be prepared by direct injection or by a carburetor.
• a motor that is characterized by the fact that it has a very high power density with a medium efficiency in the high speed range. It is therefore particularly suitable as an aircraft engine.
• Fig. 2 shows that by leaving out the combustion chamber disc and closing the housing, a very compact compressor is obtained, which can be used, for example, as a charger for common car engines similar to the known G-charger. The geometry of the control slots must of course then be optimized for this purpose. An air motor as a reversal is also possible.
• the compressor or compressed air motor shown in FIG. 2 like the exemplary embodiment shown in FIG. 1, has a basic housing 1 which has a working space 2 with an essentially circular cross section.
• a work disk 3 rotates about its central axis 2 'and has a cross section such that a sealing gap is produced between the work disk and the wall of the work area.
• a filling and ejecting space 4 is provided with at least one inlet and one outlet slot 5 and 6 and also with a circular cross section, the center of which is outside the working space 2 and the center of the work space has a distance which is smaller than the sum of the radius of the work space and the radius of the filling and extension space and which is connected to the work space.
• a control disk 7 rotates about its central axis, the outer contour of which is selected such that it forms a sealing gap both with the boundary wall of the filling and extension space and the working disk.
• the working disk and the control disk rotate in opposite directions.
• the invented Construction according to the invention as a compressor, the air being sucked in through the slot 5 and the compressed air being expelled through the slot 6.
• a rotation against the arrow direction shown in Fig. 2 gives an air motor.
• the compressed air is fed through the slot 6.
• An external drive for the disks is then of course not necessary, rather it is only necessary to forcibly couple the disks 3 and 7, so that in particular the working disk 3 rotates at twice the speed of the disk 7.
• the inlet and / or the outlet opening can be closed by rotary valves.
• a check valve can also be used in the compressor operation of the inlet valve.
• the use of a check valve has the advantage that variable compression is possible.
• the outer shape of the basic housing 1 can deviate from the circular shape.
• An eccentric housing diameter has the advantage that the running gap of the working disk tip is optimally adapted despite the asymmetrical heat distortion of the housing.
• the housing is cut free in the area of the opening 5 during compressor operation to a more uniform suction and thus to a lower working noise or when operating as a compressed air motor to avoid a pressure surge when the working disk rotates under the control disk.

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6471014

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (2)

Citations (8)

• 1992
  • 1992-10-22 DE DE19924235559 patent/DE4235559A1/de not_active Ceased
• 1993
  • 1993-10-22 EP EP93923439A patent/EP0665922A1/de not_active Withdrawn
  • 1993-10-22 WO PCT/DE1993/001010 patent/WO1994009261A1/de not_active Application Discontinuation
  • 1993-10-22 JP JP6509517A patent/JPH08505914A/ja active Pending

Patent Citations (8)

Also Published As

Similar Documents

Legal Events