EP2350437A1 - Verdichtungsvorrichtung, pumpe und verbrennungsmotor - Google Patents
Verdichtungsvorrichtung, pumpe und verbrennungsmotorInfo
- Publication number
- EP2350437A1 EP2350437A1 EP08874996A EP08874996A EP2350437A1 EP 2350437 A1 EP2350437 A1 EP 2350437A1 EP 08874996 A EP08874996 A EP 08874996A EP 08874996 A EP08874996 A EP 08874996A EP 2350437 A1 EP2350437 A1 EP 2350437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separator
- rotary piston
- fluid
- internal combustion
- combustion engine
- 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.)
- Withdrawn
Links
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
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F01C1/40—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and having a hinged member
- F01C1/44—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and having a hinged member with vanes hinged to the inner member
-
- 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
- the invention relates to a device for compressing, displacing and / or expanding a fluid with a rotary piston which is rotatably mounted on an eccentric shaft mounted in a Verdrängerraum and in a plane of rotation which extends perpendicular to a shaft axis of an eccentric shaft, rotatable, wherein Displacement is limited by an inner surface of a housing and is divided by the rotary piston and a separator in two subspaces of variable size.
- the invention further relates to a pump for displacing a fluid with at least one device for compressing and / or displacing a
- Generic rotary piston compressors or displacers comprise a, often cylindrical, rotary piston which rotates eccentrically in a, often also cylindrical, displacement chamber, wherein the rotary piston either closes tightly with the inner wall of the displacement chamber or only a narrow intermediate gap open can through which little fluid, so a gas or liquid, can pass.
- a separator often a straight or curved area element, is provided, which on the one hand has contact with the rotary piston and, on the other hand, with the inner wall of the displacer space.
- Fluid is compressed or displaced while a new compartment opens on the opposite side of the separator, which is enlarged and sucked into the fluid.
- the complete cycle of aspiration and displacement of a fluid amount therefore requires two rotations of the rotary piston, with each
- the separators are either fixedly connected to the rotary piston and slidably mounted in the inner wall of the displacement or vice versa. They have articulated or sliding contact with the rotary piston or the inner wall of the displacement.
- Other separators have a substantially curved shape and are hinged and / or dragged with the surface.
- the rotary piston compressor according to EP 0 851 125 A1 has a straight and flat separator, which is formed in one piece on a cylindrical rotary piston which is rotatable eccentrically in a displacement chamber and protrudes from the circumference of the rotary piston at a 90 ° angle.
- the separator is slidably and rotatably supported in a shoe in the wall of the displacement chamber.
- US Pat. No. 6,409,488 B1 discloses a rotary piston compressor with a cylindrical rotary piston in a cylindrical displacement chamber with a straight separator, which is guided in a spring-loaded manner in the housing wall in a linearly movable manner.
- the separator engages a slot-shaped recess in the outer wall of the cylindrical rotary piston and thus prevents complete rotation of the rotary piston about its axis.
- DE 43 15 602 A1 relates to an oscillating piston pump, wherein the cylindrical piston is formed by a pin seated eccentrically on a pump shaft, on which a support ring is freely rotatable.
- the support ring is connected by means of a double-sided arcuate separator with the housing wall, so that a complete rotation of the support ring on the housing is prevented.
- a recess for the arcuate separator is provided in the inner wall of the housing.
- a device for compressing, displacing and / or expanding a fluid with a rotary piston which is rotatably mounted on an eccentric shaft mounted in a Verdrängerraum and rotatable in a plane of rotation, which extends perpendicular to a shaft axis of the eccentric shaft , wherein the displacement chamber is delimited by an inner surface of a housing and can be subdivided by the rotary piston and a separator into two variable-sized sub-spaces, which are further developed in that the separator has a nikabismesför- shaped outer contour and is rotatably mounted on an axis of rotation with the center of the outer contour of the separator circumscribing circle coincides.
- the solution according to the invention is based on the idea of rotatably supporting the separator around an external point.
- the solution according to the invention differs from known separators, which are loaded at at least two points of the planar separator body, namely at the point of contact with the rotary piston and at the interface with the housing of the device. This includes the case that instead of a hinged
- the part of the separator which causes the subdivision of the displacement chamber into two subspaces, is connected in the device according to the invention only with the rotary piston.
- the planar part of the separator is not further loaded and only has to withstand the pressure difference of the fluid in the compartments.
- the stresses caused by the forced operation are dissipated laterally to the axis of rotation of the separator.
- This lateral part of the separator can be made so stable that higher loads can be absorbed than in the prior art.
- the axis of rotation of the separator is arranged eccentrically in the displacement.
- An eccentric arrangement here also means a decentralized arrangement of the axis of rotation of the separator in the displacer.
- a further advantage of the invention is that the rotatability of the separator around an external point achieves a longer lever with simultaneously less absolute movement of the separator than in the prior art. This makes it possible to make the rotary piston smaller in relation to the displacer space, whereby the active volume of the displacer space is increased while maintaining the same size. In addition, this reduces the load on the moving parts.
- the rotary piston can be made smaller and lighter in relation to the displacement, also the mechanical vibrations that occur in the rotation of the rotary piston in the device reduce.
- these are, in particular, pressed ball bearings or the use of self-lubricating materials, such as gun barrels, which permit, for example, steel shafts to be stored without that the materials seize up.
- a compressed ball bearing is understood in the context of the present invention, a bearing that ideally without tolerance, at least with extremely low tolerance, for example, about 1 micron, is installed and has a tight fit. Such a used stock is only with
- an eccentric shaft is understood to mean any force- and rotational-impulse-transmitting shaft on which a rotary piston is mounted eccentrically, so that a rotation of the shaft causes a rotation of the center of the rotary piston about the central axis of rotation of the eccentric shaft.
- the subspaces are within the scope of the invention, a subspace which increases in the course of one revolution of the eccentric shaft with the rotary piston, in particular under suction of fluid and a second subspace, which simultaneously reduces and displaces fluid and / or compressed. These subspaces are also referred to below as intake space and compression space.
- the working direction of a device according to the invention for compressing and / or displacing a fluid can advantageously also be reversed.
- the separator is connected at one end point of its circular section-shaped outer contour to the circumference of the rotary piston in an articulated manner. This has the advantage that the comparatively flat separator is only positively guided at one point.
- the second end point of the separator body is not connected to any other component, so that no bending forces act on the separator body and this does not deform. Instead, the separator is supported on an axis of rotation which is in the center of the circular outer contour, so that in the course of a rotational movement of the rotary piston the separator moves off part of a circle.
- the rotation which the separator makes in the course of a rotation of the rotary piston is, depending on the design, preferably between 70 ° and 110 °, ie only about a quarter of a full circle.
- the separator forms part of the housing wall, which delimits the displacement chamber.
- the separator is designed as a drum valve, in which a body of the separator is laterally delimited by two, in particular circular, plates which have on their outer sides in each case an axle attachment, in particular an axle shaft or an axle bearing.
- the separator also serves as an inlet valve, so that more
- At least one outlet opening with at least one valve is provided.
- the check valve opens as soon as the internal pressure in the displacement chamber exceeds the pressure on the other side of the valve.
- a check valve and a preset or adjustable outlet valve may be provided, which is preset or adjustable, for example, to a pressure difference of 3 bar or higher.
- a working pressure of between 6 and 10 bar or between 8 and 10 bar can be set, or higher.
- the surface of the rotary piston is at least partially coated with Teflon, in particular hard Teflon, or at least partially has a labyrinth structure for generating a labyrinth effect. Since the rotary piston is positively guided, it is sufficient to provide the portions of the surface of the rotary piston with a corresponding coating or structure, which make a maximum approach to the boundary surface of the 5 Verdrängerraums during a revolution of the rotary piston. In the case of a Teflon or Hartteflon- coating part of the Teflon coating is removed in an initial phase, while the device enters. This creates minimum distances.
- the principle of the labyrinth effect is based on the fact that a flat labyrinth structure is engraved into the surface of the rotary piston, with a depth of a few hundredths of a millimeter or less. In a rapid movement, this leads to a turbulent flow due to the irregular corrugated structure of the surface of a laminar flow through the gap between the rotary piston and the inner surface of the displacer gerraums, which opposes the flow through the gap a much higher resistance, so that leakage currents between the subspace are effectively prevented. o Additionally or alternatively, it is advantageously provided that the inner surface of the housing delimiting the displacement chamber and / or the surface of the separator are pressed against its outer surface. - -
- Teflon in particular Hartteflon, coated or has a labyrinth structure to produce a labyrinth effect. It is also possible, on one side, for example, the inner wall of the displacement, to provide a labyrinth structure and on the other side, for example, the surface of the rotary piston, a Teflon coating.
- a very accurate positioning is achieved with a prevention of play in the joints and bearings when the storage of the shaft axis of the eccentric shaft in an opening of the
- Housing and / or the rotary piston on a cam of the eccentric shaft and / or a pin of the separator in a swivel eye of the rotary piston and / or a shaft of the separator in a journal box in the housing is a compressed ball bearing.
- a feed-free solution is advantageously also achieved when the bearing of the shaft axis of the eccentric shaft in an opening of the housing and / or the rotary piston on a cam of the eccentric shaft and / or a pin of the separator in a swivel eye of the rotary piston and / or an axle shaft of the Separators is formed in an axle bearing in the housing in the form of a gunmetal sleeve, wherein in particular an engaging into the red brass sleeve pin or shaft is at least partially made of steel.
- This combination of materials has the advantage that the gunmetal is self-lubricating and, in combination with steel, does not cause any galling that will damage the material.
- Gunmetal is bronze, for example.
- the housing of the device and / or the rotary piston and / or the separator consist at least predominantly of aluminum.
- the term "at least predominantly existing" in the context of the invention means that less-loaded volume parts are used to reduce the weight of the made of aluminum or consist mainly of aluminum, while more heavily loaded parts, such as the bearings and joints, made of harder and more durable materials. In order to further reduce weight, it is also possible to manufacture individual components from even lighter materials which have a similar or higher stability.
- the displacement chamber and the rotary piston are cylindrical. In this way, a particularly simple geometry is generated, which is also easy to manufacture and enables reliable production with particularly low tolerances.
- the diameter of the rotary piston is less than 0.7 times, in particular less than 0.64 times the diameter of the displacement chamber.
- Such conditions were previously unachievable in conventional rotary piston compressors. This also increases the efficiency and the power weight of the device. For example, this is
- Power to weight ratio of a device according to the invention with a displacement volume of 0.3 I which generates a pressure of 8 to 10 bar at a flow rate of 600 l / min, only about one third or less of the power weight of a conventional Vorrich- device with the same features.
- the displacement chamber advantageously has a device for adjusting the residual volume, in particular a threaded bore with a movable threaded rod adjustable therein.
- the residual volume is the smallest possible volume at maximum compression. By virtue of the fact that this volume is If the threaded rod is changed, the compression ratio is also changed. An increase in the residual volume means a reduction in the compression ratio.
- the device according to the invention is lubrication-free and oil-free in the displacement chamber.
- the joints and bearings can be made ceramic or self-lubricating.
- the bearings are preferably corrosion-resistant bearings that are permanently, so lifelong, oiled or greased and sealed for life.
- the main axis is preferably sealed by means of one or more shaft sealing rings, that is, for example, steel-encapsulated rubber rings.
- shaft sealing rings that is, for example, steel-encapsulated rubber rings.
- the bearings run dry. These measures ensure that no oil or grease gets into the displacement chamber.
- the object underlying the invention is also achieved by a pump for displacing a fluid with at least one device for compressing and / or displacing a fluid as described above.
- a pump for displacing a fluid with at least one device for compressing and / or displacing a fluid as described above.
- N is at least 2
- a common, in particular one-piece or multi-part, eccentric shaft to compensate for imbalances is formed in that the rotary pistons have phase differences of, in particular multiples of, 3607N.
- an internal combustion engine comprising a device for compressing a fluid, a combustion chamber, in which to generate a combustion or explosion compressed fluid from the device and a fuel are introduced, and a device for expanding the combustion product from the combustion chamber, which is further developed in that the device for compressing a fluid is a device according to the invention as described above.
- This principle derives from the principle of the internal combustion engine, which is known, for example, from the diesel engine, in which the process steps of compression, exploitation (in the diesel engine) and expansion of the combustion products take place in a piston cylinder.
- the device for expanding the combustion product is a device according to the invention as described above, which is operated in particular in reverse order, in particular, the opening which is closed by the separator 5, the outlet opening.
- This has the advantage over known vane-type internal combustion engines operating with a similar thermodynamic cycle that the very hot combustion products, which can be hot above 2,000 ° C. and are under high pressure, as well as the force released during expansion, are not fragile Acting vane, but on a more robust rotary piston, which withstands the high temperature much better than the known cell blades of the vane machines.
- the volume of the displacement chamber of the device for compressing a fluid is smaller than the volume of the displacement chamber of the device for expansion of the combustion product, in particular with a factoro 1: 2.5 to
- This is advantageous for increasing the efficiency over known cylinder-piston-based internal combustion engines, such as the diesel engine, since this ratio is only 1: 1 due to the fact that the compression and expansion take place in the same piston cylinder.
- the high residual pressure and the high residual temperature of the combustion products can not be used indirectly or indirectly to a limited extent in such internal combustion engines, while in the internal combustion engine according to the invention a significantly greater expansion is utilized.
- a device in particular a check valve, an overflow valve or a valve synchronized with the rotation of the rotary piston, is arranged between the displacement chamber of the device for compressing a fluid and the combustion chamber and / or between the combustion chamber and the displacement chamber of the device for expansion of the combustion product, which prevents backflow of the fluid or combustion product from the combustion chamber into the device for compressing a fluid or from the device for expansion of the combustion product into the combustion chamber. This ensures that the process only runs in one direction.
- At least one combustion product inlet opening in the combustion product expansion device is arranged circumferentially or in one side of the displacement chamber such that the eccentric shaft and the rotary piston relative to the inlet opening upon initiation of combustion Combustion product in a position of 40 ° to 160 °, in particular about 90 °, stands.
- the degree refers to the angular position, within which the subspace of the displacer volume is included, which receives the fluid to be expanded. From this position, the rotary piston continues to move with expansion of the gas up to a 360 ° position corresponding to the 0 ° position.
- the combustion chamber and / or the displacement of the device for expansion of the combustion product are provided with a lining which consists of a material which at temperatures up to more than 2,000 0 C. 1, in particular to more than 2,100 0 C, resistant - -
- the device for compressing a fluid to a compression ratio of 100: 1 or greater, in particular up to 140: 1, is designed.
- the device for compressing a fluid has at least one nozzle for introducing a fuel, in particular in a non-combustible mixing ratio, into the displacer space.
- a fuel in particular in a non-combustible mixing ratio
- Admixture of 2 vol .-% diesel to be compressed air which represents a mixing ratio that is not combustible at temperatures reached in diesel engines of about 1,800 0 C.
- the fuel has a lubricating effect, which is desired in the internal combustion engine according to the invention.
- the combustion chamber is preferably hollow spherical or has a substantially rounded shape, which ensures a uniform and rapid combustion in the entire volume of the combustion chamber.
- Such an internal combustion engine according to the invention has about one quarter to one third of the weight, the size and the consumption compared to known internal combustion engines with cylinder pistons with the same power.
- a compression of the intake air in the ratio 1: 100 to 1: 140 and an introduction of a fuel or fuel injection technology in the combustion chamber to the combustion temperatures of up to 2,000 or 2,100 0 C 0 C in which decompose nitrogen oxides even arise.
- Suitable fuels are for example gas, Hydrogen, diesel, LPG, oils, fats, cereal dust or other combustible and especially pourable materials.
- a non-combustible mixture of diesel and air is present in the compressor for lubrication, for example with 2% by volume of diesel, the full amount of diesel does not have to be injected in the combustion chamber.
- a diesel-air mixture is combustible at at least 6 vol .-% diesel. At the achieved compression ratios, the mixture ignites in the combustion chamber by itself.
- Possibilities to regulate the power and the operating point of the internal combustion engine according to the invention advantageously consist in the change of the residual volume of the devices for compression or expansion of a fluid or the combustion product and in a sequential or partial injection of the fuel in the combustion chamber or in the Displacement of the device for compressing a fluid.
- FIG. 1 is a schematic sectional view through the plane of rotation of a device according to the invention
- FIG. 2 is a schematic sectional view in a vertical plane through the device according to the invention according to FIG. 1, - -
- FIG. 3a, b is a schematic frontal plan view and sectional view through a housing of a device according to the invention shown in FIG. 1,
- FIG. 5a, b are schematic sectional views of the rotary piston and the separator of FIG. 4,
- FIG. 6a-f show several schematic plan views of an inventive device according to FIG. 1 corresponding to different cycles of the rotary piston
- Fig. 7 is a schematic sectional view through an internal combustion engine according to the invention.
- FIG. 1 shows a schematic sectional view through the plane of rotation of a device 1 according to the invention for compressing and / or displacing a fluid.
- the device points at a
- Housing 2 a displacer 3 on with a rotary piston 4, which is rotatably mounted on a cam 7 of an eccentric shaft 5 with shaft axis 6.
- the rotary piston 4 On the surface 4 ', the rotary piston 4 has a swivel eye 8 into which a pin 9 of a separator 10 engages for an articulated connection.
- the separator 10 has plates on its sides (see FIG. zugsziffer 10 ') having in the center axle shafts 11, which are rotatably mounted in axle bearings 12 (see Fig. 2) of the housing 2. Between the plates, the separator 10 has a body which, in cooperation with the rotary piston 4, divides the displacement chamber 3 into two partial spaces, namely a suction space 19 and a compression space 20.
- the sheet of the separator 10 has a circular outer contour 13, which is equal to the crown radius in radius.
- the inner contour 14 of the sheet of the separator 10 is also circular, but concave, and has a radius of curvature corresponding to the radius of the rotary piston 4. The sheet is therefore not completely flat, but sickle-shaped. It can be solid or hollow inside.
- the housing 2 has an inlet opening 15 with a contoured
- the separator 10 is rotatably supported so that the sheet of the separator 10 releases the input port 15 depending on its rotational status or closes.
- the inlet opening 15 communicates with the suction chamber 19 in connection.
- the second subspace, the compression space 20, communicates with an outlet opening 17 which has an outlet valve 18, for example a check valve or an overflow valve
- Fig. 2 is a schematic sectional view in a vertical plane through the device according to the invention shown in FIG. 1.
- the plane passes through the central horizontal axis in Fig. 1.
- the two massive plates 10 'with the AchsSften 11 of the separator 10 can be seen.
- a cover which is placed on the housing 2 to complete the displacement 3 also laterally.
- a motor is connected to the shaft axis 6, not shown, the Len lenachse 6 rotates.
- the shaft axis 6 has an eccentric or an eccentric shaft 5 on the displacement side end, on which eccentrically a cam 7 is arranged, on which the rotary piston 4 is mounted.
- Both the mounting of the rotary piston 4 on the cam 7, the pin 9 on the swivel eye 8 and the axle shaft 11 of the separator 10 on the Achslagerung 12 in the housing 2 may be advantageously carried out in various ways.
- Advantageous designs are pressed ball bearings, which suppress any play that is above 1/1000 mm.
- Particularly low-friction are also combinations of steel pins with gun barrels, which are advantageously used for example at the articulated connection between the rotary piston 4 and separator 10, but also at other hinge brackets.
- FIG. 3 a shows a housing 2 of a device 1 according to the invention in a frontal plan view of a housing 2.
- the displacer space 3 is cylindrical, wherein the shaft axis 6 is arranged centrally, while the axis of rotation or axial bearing 12 of the separator 10 is arranged in a decentralized manner.
- Fig. 3b is a schematic sectional view through the housing 2 shown in FIG. 3a, in which the depth ratios of the lateral wall of the housing 2 and the recess 22 for receiving the plate of the separator 10 are shown.
- the bearings 23 and 24 for the shaft axis and the axle shaft 1 1 of the separator are shown.
- FIGS. 4a and 4b show schematic frontal plan views of a rotary piston 4 and a separator 10 according to the invention.
- the rotary piston 4 in Fig. 4a in addition to the surface 4 ', which is coated with Hartteflon example, the hinge eye 8 shown, the sides 25 of the rotary piston 4 of the rotary piston 4 and an opening 26 for a cam 7 of the eccentric 5 th.
- Fig. 4b the separator 10 is shown with the sheet with the outer contour 13 and the inner contour 14 and the pin 9. Also shown is the side wall 27 of the separator 10. Center on the side wall 27 of the shaft 11 is shown.
- FIGs. 5a and 5b are schematic sectional views of the _
- Rotary piston 4 shown in FIG. 4a and the separator 10 shown in FIG. 4b It can be seen that the rotary piston 4 has a swivel eye 8, which accounts for only about half the depth of the rotary piston 4. Inside the rotary piston 4, an opening 26 for a cam 7 is shown and a side wall 25 of the rotary piston 4. It remains beyond the side wall 25, a cavity in which the eccentric shaft 5 has space for rotation.
- Fig. 5b the plates 10 'with the side walls 27 of the separator 10, each having a shaft 11 are shown.
- the sheet is shown without hatching between the plates 10 '.
- the pin 9 has no connection with the surface body of the separator 10, wherein the surface body in turn has a recess there, where the rotary piston 4 has its hinge eye 8.
- the depth of the recess on the separator 10 corresponds to the depth of the swivel eye 8.
- the pin 9 extends through the swivel eye 8 completely through and protrudes slightly beyond the swivel eye 8 at the exiting end.
- FIGS. 6 a to f show several schematic plan views of a device 1 according to the invention according to FIG. 1, the individual images corresponding to successive positions of the rotary piston 4.
- a middle position is shown in which the eccentric shaft 5 and the rotary piston 4 with respect to the central shaft axis 6 in a 9 o'clock position or 270 ° position.
- the rotary piston 4 is at a maximum distance from the inlet opening 15.
- the separator 10 is rotated into a position drawn in at a maximum into the displacement chamber and releases the inlet opening 15.
- the suction chamber 19 is therefore slightly larger _.
- Fig. 6e are the eccentric shaft 5 and the rotary piston 4 in a slightly more advanced position, about a 4 o'clock position.
- the surface of the rotary piston 4 now moves away from the inner contour 14 of the separator 10, while the inlet opening 15 is still closed.
- the inlet opening 15 releases, filled with air or fluid. Since the remaining subspace 20 is reduced, the large subspace at this stage is a compression space 20.
- Fig. 6f are eccentric shaft 5 and rotary piston 4 in a 6 o'clock position or 180 ° position.
- the inlet opening 15 is free, so that with respect to the direction of rotation of the rotary piston 4 rear part space 19 is filled with air or fluid.
- the volume of the compression space 20 decreases further.
- FIG. 7 shows a schematic sectional illustration through an internal combustion engine 30 according to the invention.
- a compressor 32, a unit with a combustion chamber 33 and an expander 34 are shown sequentially from left to right in FIG. 7.
- Compressor 32 and expander 34 are in the manner described in FIGS. 1 to 6 Fashion executed.
- the compressor 32 and the expander 34 thus have cylindrical displacement chambers 38 and 39, respectively, in which on a common camshaft 35, each with its own eccentric shafts (not shown) rotary pistons 36 and 37 are arranged in the manner described above eccentrically by the cylindrical Rotate displacement chambers 38 and 39, respectively.
- the rotary pistons 36, 37 _ The rotary pistons 36, 37 _.
- air inlet 40 By way of an air inlet 40, for example, air is sucked into the displacer space 38 of the compressor 32, compressed in the manner described above, preferably to a compression ratio of 100: 1 to 140: 1, and then through a transition line 41 and a spring-loaded overflow valve 43 directed into a spherical combustion chamber 33.
- the sucked air is possibly already with a small
- Loaded amount of fuel such as diesel, to effect lubrication and optionally to realize a sequential injection.
- the combustion chamber 33 has an injector 45 for fuel, which is injected into the combustion chamber 33. Due to the high pressure prevailing in the combustion chamber 33, the mixture ignites by itself and burns at a very high temperature, preferably above 2,000 0 C, so that complete incineration is carried out comparison, avoiding harmful emissions such as nitrogen oxides. Due to the high temperatures, the inside of the combustion chamber 33 is lined with a high-temperature ceramic 46. In the illustrated case, the injection nozzle 45 is connected via a cam of the camshaft with the camshaft 35, which creates a force connection of expander 34 to the compressor 32. Thus, the injection timing can be set to the phases of the compressor 32 and the expander 34.
- combustion chamber 33 and expander 34 opens. There, the combustion product flows into the displacement chamber 39 of the expander 34, which has a larger volume than the displacement chamber 38 of the compressor 32.
- the ratio of the volumes of the displacement chambers 39 and 38 is advantageously in the range of 2.5: 1 to 3: 1 dependent from the operating point of the internal combustion engine 30.
- the separator among others the transition line 42, which leads into the displacement chamber 39 of the expander 34, separates from the air outlet 47. A direct connection between the transition line 42 and the air outlet 47 is therefore not given. This also applies to the compressor 32, in which the air inlet 40 is also not directly connected to the transition line 41 from the compressor 32 to the combustion chamber 33.
- the internal combustion engine 30 of the present invention because of its movement at high temperatures and pressures unreachable with conventional diesel engines, for example, uses high energy efficiency with light weight and small dimensions.
- the construction of the invention is much more stable, both in terms of stability to the pressures and to the temperature.
- the operating point can be adjusted in the internal combustion engine 30 according to the invention by realizing a sequential or partial injection and by changing the residual volumes of the compressor 32 and / or the expander 34 and thus changing the respective compression or expansion ratio. This can be done in the same way as above with respect to the device according to the invention for compression - -
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Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/EP2008/009130 WO2010048970A1 (de) | 2008-10-29 | 2008-10-29 | Verdichtungsvorrichtung, pumpe und verbrennungsmotor |
Publications (1)
Publication Number | Publication Date |
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EP2350437A1 true EP2350437A1 (de) | 2011-08-03 |
Family
ID=40897635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP08874996A Withdrawn EP2350437A1 (de) | 2008-10-29 | 2008-10-29 | Verdichtungsvorrichtung, pumpe und verbrennungsmotor |
Country Status (3)
Country | Link |
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EP (1) | EP2350437A1 (de) |
CN (1) | CN102203385A (de) |
WO (1) | WO2010048970A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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UA119134C2 (uk) | 2012-08-08 | 2019-05-10 | Аарон Фьюстел | Роторні пристрої з розширюваними камерами, що мають регульовані проходи для робочого плинного середовища, а також системи, що мають такі пристрої |
CN104747236A (zh) * | 2014-02-07 | 2015-07-01 | 摩尔动力(北京)技术股份有限公司 | 多级流体机构及包括其的发动机 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1358369A (fr) * | 1962-07-10 | 1964-04-17 | Moteur à combustion interne ou compresseur à capsules | |
DE2436483A1 (de) * | 1974-07-29 | 1976-02-12 | Herzner Hans | Innenachsige umlaufkolbenmaschine |
DE3638022A1 (de) | 1986-11-07 | 1988-05-11 | Karl Sturm | Drehkolbenpumpe |
DE4315602A1 (de) | 1992-05-26 | 1993-12-02 | Barmag Luk Automobiltech | Schwingkolbenpumpe |
JP3596110B2 (ja) | 1995-09-28 | 2004-12-02 | ダイキン工業株式会社 | スイング圧縮機 |
SG53012A1 (en) | 1996-07-10 | 1998-09-28 | Matsushita Electric Ind Co Ltd | Rotary compressor |
-
2008
- 2008-10-29 WO PCT/EP2008/009130 patent/WO2010048970A1/de active Application Filing
- 2008-10-29 EP EP08874996A patent/EP2350437A1/de not_active Withdrawn
- 2008-10-29 CN CN2008801318264A patent/CN102203385A/zh active Pending
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2010048970A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN102203385A (zh) | 2011-09-28 |
WO2010048970A1 (de) | 2010-05-06 |
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