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
  • F01C9/00—Oscillating-piston machines or engines
  • F01C9/005—Oscillating-piston machines or engines the piston oscillating in the space, e.g. around a fixed point
• • 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
  • F01C9/00—Oscillating-piston machines or engines
• • 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
  • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
  • F01C21/04—Lubrication
  • F01C21/045—Control systems for the circulation of the lubricant
• • 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
  • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
  • F01C21/08—Rotary pistons
• • 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
  • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
  • F01C21/10—Outer members for co-operation with rotary pistons; Casings
• • 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
  • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
  • F01C21/18—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
  • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
  • F04C29/02—Lubrication; Lubricant separation
  • F04C29/023—Lubricant distribution through a hollow driving shaft

Definitions

• the invention relates to a fluid system for a rotary piston machine with at least two pivoting pistons arranged in a spherical housing and circulating around a housing-mounted central axis, each having two opposing piston arms and which during pivoting reciprocating pivoting movements about a perpendicular to the axis of rotation Run pivot axis in opposite directions, wherein at least two piston arms mounted guide members engage in at least one, formed in the housing, for controlling the pivoting movements certain guide.
• oscillating-piston engines belong to the category of internal combustion engines in which the power strokes of the intake, compression, expansion and expulsion of the combustion mixture are effected by external or self-ignition by means of oscillating motions of the revolving pistons between two end positions according to the Otto or Diesel four-stroke method ,
• Such a known from WO 2005/098202 A1 oscillating piston engine has fluid feeds from the piston side inside to the used as guide members, loose spherical or ellipsoidal shaped bodies of revolution.
• loose guide members may also be fixedly connected to the piston, radially rotatable rollers may be present, as described for example in US 3,075,506 and WO 03/067033. Also for these guide members lubrication is provided or necessary.
• an internal cooling by fluid is further indicated by fluid-filled cavities are arranged behind both the side surfaces and behind the inner piston surfaces which surround the working chambers, which are characterized by the heat transfer from the inner surfaces of the working chambers Heat up and pass this heat through the fluid circulation to the container and possibly to fluid cooling devices.
• the bearings of the circulation Swivel axis and running on the inside of the housing sealing elements are lubricated.
• the fluid system is to protect each other rubbing machine parts by adequate lubrication from excessive wear, improve the efficiency by reducing the breakdown resistance and possibly additionally provide a cooling by heat dissipation by heating fluid and discharge from the engine.
• the object of the invention is in each case a fluid system for different applications and designs of the oscillating piston machines, characterized by simplicity, minimum fluid loss or consumption, suitable fluid means and minimal friction, i. low wear and thus long life and to exploit synergies between the fluid systems of lubrication, fuel supply and engine cooling.
• the fluid system is provided for a reciprocating piston machine, which oscillating piston machine comprises at least two two-armed pivoting pistons arranged in a spherical housing and a revolving pivoting shaft rotatable about a housing-centered revolving axis, wherein the pivoting pistons on the revolving pivoting shaft are about a pivot axis perpendicular to the revolving axis are pivotally mounted such that the rotation of the rotary piston pivot about the axis of rotation about the axis of rotation together, and perform during rotation reciprocating pivotal movements about the pivot axis in opposite directions, with at least 2 piston mounted guide members in at least one, im Housing trained, to control the pivoting movements certain guide groove engage.
• the pistons each comprise at least one fluid-flooded channel forming part of the fluid system.
• the respective floodable channel surrounds at least one cavity formed in or on the respective piston and / or at least one in formed bore of the respective piston, wherein the introduction of the fluid from a container through the housing takes place at least one end of the rotary pivot shaft and the respective cavity in or on the respective piston and / or the respective bore in the respective piston via holes in the Circulating pivot shaft are flooded and wherein from the respective cavity and / or the respective bore a discharge of the fluid in the direction of the housing inside facing piston surfaces takes place, so that both caused by the rotation of the rotary pivot shaft centrifugal force to a suction causes the initiation as well as pressure in the discharge lines at the piston surface and thus an automatic fluid circulation via drain openings is set to the container in motion.
• the introduction of the fluid is advantageously carried out by a Kalibrierdüse, which determines the fluid passage ⁇ volumetrically.
• a return valve can be connected upstream of the introduction, which prevents the return flow of fluid, for example due to evaporation, from the machine due to evaporation.
• the introduction into the circulation pivot shaft can be made either via at least one axial bore at the shaft end or at least one radial bore in the storage.
• Kalottendeckel Kalottendeckeln
• the working chamber inner surfaces are backed with holes or chambers emanating from these cavities, which likewise fill with fluid and take over heat from the working chamber inner surfaces.
• this heat transfer can lead to vaporization of the fluid and thus divert a very large amount of heat from the pistons, which have at least one discharge to the inside of the guide members in the piston outer side.
• calibrated connection bores (hereinafter "calibration bores") in the sealing ring or sealing strip retaining grooves
• the sealing of these sealing elements to the working chambers or prechambers is improved by means of fluid filling of the retaining grooves and hydraulic contact pressure and, on the other hand, the gap between the sealing element and the ball inner housing is ensured by gap losses.
• diesel fuel in particular for compression-ignition engines or to effect lubrication by oil admixture with petrol in simple, smaller engines.
• these fluids are conducted instead of engine oil on the described circuit through the internal engine and then to the fuel tank or to the injection or carburetor.
• diesel fuel instead of cooling liquid mixture such as water + antifreeze, which is conducted from the fuel tank into the cooling jacket of the housing and then cooled again via a cooler through which air flows and returned to the tank.
• Fig. 1 is a side view of an oscillating-piston engine with two at one. ner circulating pivot shaft arranged piston and a erfindungsge- baussen fluid system;
• FIG. 2 shows the oscillating-piston machine cut in the direction of rotation axis direction according to FIG. 1;
• FIG. 3 shows the oscillating-piston machine cut in the direction of the pivot axis according to FIG. 1, the pistons being shown in a section along the pivot axis inside the machine;
• FIG. 4 shows a diagrammatic / perspective view of an overall system of a reciprocating piston engine, which comprises a further embodiment of the fluid system according to the invention in combination with an engine-fuel injection and an engine cooling system, all preferably with diesel fuel powered by the same fuel tank, with injection,
• FIGS. 1-3 show a rotary piston machine 100 with a fluid system 60 according to the invention.
• the oscillating piston engine 100 includes i.a. a spherical housing 19, a rotatable about a central axis arranged around the housing 23 rotatably mounted at their ends in the housing wall rotary pivot shaft 25 and two attached to the circulating pivot shaft 25 pivoting piston 4.
• Each of the pivot piston 4 has two with respect to the revolving axis 23 diametrically opposed piston arms 4.1 and 4.2 and is pivotally mounted on the revolving pivot shaft 25 about a pivot axis 24 perpendicular to the axis of rotation 23 such that the pivot piston 4 rotate together with a rotation of the revolving pivot shaft 25 about the revolving axis 23 around the revolving axis 23 and in addition Revolve reciprocating pivotal movements about the pivot axis 24 in opposite directions.
• 4 guide members 5 are mounted on at least two pistons, which engage in at least one formed in the housing 19, for controlling the pivoting movements certain guide groove 17.
• the guide members 5 are each loose spherical rotary bodies, which are each mounted on the piston side in a formed on one of the piston 4 holding pan 39, wherein the holding pan 39 - is formed hemispherical - in accordance with the shape of the respective rotating body 39.
• the guide members 5 can also be realized as radial rollers, wherein the rollers can be held in a rolling or sliding bearing part formed on the respective piston 4.
• Such arrangements of guide members in the form of rotational bodies or rollers are also disclosed, for example, in WO 2005/098202 and WO 03/067033, respectively.
• the volume of the respective working chamber 4.1 'or 4.2' depends on the instantaneous position of the pistons 4 and fluctuates during circulation of the revolving pivot shaft 25 and the piston 4 around the revolving axis 23 periodically between a minimum value and a maximum value.
• a fuel can be sprayed via an injection valve 20 (depending on the position of the pistons 4) optionally into the working chamber 4.1 'or the working chamber 4.2' and subsequently ignited in the respective working chamber, where the combustion of the fuel causes a pivotal movement of the pistons 4 in respectively opposite directions about the pivot axis 24 and correspondingly a circulation of the pistons 4 and the revolving pivot shaft 25 about the revolving axis 23.
• sealing elements 6 Between the respective pistons 4 and the inside 2 of the housing 19 and the revolving pivot shaft 25 is provided; wherein the sealing elements 6 are respectively held in corresponding, formed in the piston 4 retaining grooves 7.
• the oscillating piston engine 100 can be operated as a diesel engine (as indicated in FIGS. 1-3). Alternatively, the oscillating piston engine 100 may also be equipped with a spark plug (not shown in the figures) for igniting the fuel introduced into one of the working chambers 4.1 'or 4.2' in order to operate the oscillating piston engine 100 as a spark igniter.
• a spark plug not shown in the figures
• the fluid system 60 comprises a container 15 (flanged to the housing 19 in the present case) for a fluid, a system of channels formed in the interior of the oscillating piston engine 100 that can be flushed with the fluid and continuous for the fluid (which will be specified in more detail below a conduit 61 for introducing the fluid from the container 15 into said system of channels and a return flow of the fluid from said system of channels into the container 15 via fluid drainage openings 16 formed in the housing 19 closed circulation for the fluid to realize.
• the flow of fluid through the interior of the oscillating piston engine 100 (along said system of channels) is organized as follows.
• a calibration nozzle 9 for regulating the flow of the fluid and a check valve 37 (for preventing backflow into the container 15) is installed in the conduit 61, wherein the arrow on the line 61 in Fig. 1, the flow direction of the fluid.
• the line 61 opens into an inlet opening 1 for the fluid in the wall of the housing 19.
• the inlet opening 1 is open to one end 27 of the revolving pivot shaft 25 and allows the introduction of the fluid from the line 61 into (respectively at both Ends open) bores 26 which in the rotary pivot shaft 25 along the circumferential axis 23 (see Fig. 2) and along the pivot axis 24 (see Fig. 3) extend and intersect each other in the middle of its longitudinal extent. In this way, a flow of the fluid in the revolving pivot shaft 25 along the revolving axis 23 and the pivot axis 24 is possible.
• a cavity 28 (with the shape of a spherical segment) formed, which via an opening at one end of the bore 26 or, at the closed ends of the bore 26 at the pivot shaft part of the circulation pivot shaft 25 through the thrust bearing 50 is flooded with the fluid.
• the two shown in Figure 3, arranged at opposite ends of the rotary pivot shaft 25 cavities 28 are each formed on different pistons 4 and therefore in pivotal movements of the two pistons 4 respectively in opposite directions. each perform a rotational movement about the pivot axis 24.
• Each of the pistons 4 has in each case in the piston arms 4.1 and 4.2 in the vicinity of the working chamber inner sides 14 a plurality of bores 30, each of one of Cavities 28 are flooded with the fluid. Of the holes 30 in turn lead different calibration holes 10 to the retaining grooves 7 for the sealing elements 6 and leads 31 under the respectiveêtsgliedem. 5
• the fluid may consist of the retaining grooves 7 (via gaps respectively formed between one of the sealing members 6 and the corresponding retaining groove 7) and the leads 31 (via gaps formed respectively between one of the guide members 5 and the corresponding retaining cup 39) escape the respective piston 4 to the housing inside 2 and, for example, to the guide grooves 17 long.
• a drainage groove 51 is formed in each case, in which the fluid can flow past the respective guide member 5 to the already mentioned drainage openings 16 and from there into the container 15.
• the oscillating-piston engine 100 has cavities 18 for a cooling fluid on the outside of the housing 19, wherein the cooling fluid can penetrate into the cavities 18 via a cooling-fluid introduction opening 34 (see FIGS. 3 and 4) Leave the cavities 18 via a cooling fluid outlet opening 35 (see FIGS. 1 and 3).
• FIG. 4 shows the oscillating piston engine 100 already described in connection with FIGS. 1-3 in conjunction with another fluid system 70 designed according to the invention.
• the system 70 in the present case is combined with a fuel injection and with a cooling system wherein the fluid system 70 for introducing a fluid via a (connecting) line 32 in the inlet port 1 and the cooling system for introducing a (cooling) fluid via a (connecting) line 42 into the cooling fluid inlet opening 34th and the fuel injection for introducing fuel through a (connecting) line 52 into the injection valve 20 is used.
• the (connecting) lines 32, 42 and 52 are all connected to a fuel tank 11 which supplies the fluid system 70, the cooling system and the fuel injection ' with a fluid, preferably diesel fuel.
• the fluid system 70 also includes a (connecting) conduit 33 between the container 15 and the fuel tank 11 to provide a return flow of the fluid passing through the intake manifold. Opening 1 supply fluid to the fuel tank 11 to ensure.
• a (connection) line 43 between (not visible in Fig. 4, but shown in Fig. 3) cooling fluid outlet opening 35 and the fuel tank 11 provides correspondingly eiuien reflux of the introduced into the cooling fluid inlet port 34 fluid to the fuel tank 11.
• the lines 32, 42 and 52 are each provided with its own (conveyor) pump 8 or 36 and 38, respectively.
• the lines 33 and 43 are each equipped with their own heat sinks 21 and 22 for the back to the fuel tank 11 running fluid.
• the arrows on the lines 32, 33, 42, 43 and 52 in Fig. 4 each indicate the flow direction of the fluid.
• the fluid flow rate is determined by the fluid inlet pressure to Einleitöff- 1, the adjustable or replaceable calibration 9, the viscosity of the fluid, the inner diameter of the ' housing 19, the speed of the oscillating piston engine 100 and the cross section of the calibration holes 10 to the Sealing elements 6 and to the guide members 5 determined.
• diesel fuel can also be used for lubrication and the fluid system can be connected to the fuel tank 11 as in the example according to FIG. 4.
• the compounds 32, 33 by means of fine-mesh sieves 12 to prevent rupture-preventing.
• the fluid gap losses in the sealing elements 6 on the antechamber 13 or working chamber inner sides 14 cause mixing with the Otto fuel supplied by the fuel system and loss lubrication such as achieved in two-stroke engines for the lubrication of the sealing elements 6, while shaft bearings 46, thrust bearings 50 and guide members 5 are supplied by the fluid circulation via discharge openings 16 in the guide grooves 17.
• the fluid system can also be used for external cooling of the oscillating piston engine by the cooling cavities 18 are flooded outside the ball housing 19 through the cooling fluid inlet opening 34 with fluid and through the cooling fluid outlet opening 35 with or without intermediate main radiator 22, a return line 43 to the fuel tank 11 takes place.
• the auto-ignition engine since diesel fuel is suitable both as a lubricating fluid for lubrication in the internal engine and as a cooling fluid for external cooling of the engine, especially diesel fuel is characterized by suitable properties for these applications in particular with regard to lubricity, viscosity and boiling point.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Of Internal Combustion Engines (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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• 2007
  • 2007-02-09 EP EP07701867A patent/EP1982050A1/de not_active Withdrawn
  • 2007-02-09 CN CN2007800051637A patent/CN101384795B/zh not_active Expired - Fee Related
  • 2007-02-09 RU RU2008136395/06A patent/RU2477804C2/ru not_active IP Right Cessation
  • 2007-02-09 AU AU2007214182A patent/AU2007214182A1/en not_active Abandoned
  • 2007-02-09 KR KR1020087021997A patent/KR20080091860A/ko not_active Application Discontinuation
  • 2007-02-09 JP JP2008553599A patent/JP2009526158A/ja active Pending
  • 2007-02-09 US US12/278,627 patent/US8322323B2/en not_active Expired - Fee Related
  • 2007-02-09 WO PCT/CH2007/000067 patent/WO2007090314A1/de active Application Filing
• 2009
  • 2009-09-01 HK HK09107991.5A patent/HK1130084A1/xx not_active IP Right Cessation

Non-Patent Citations (1)

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