EP0712997B1 - Sauggeregelte Zahnring-/Innenzahnradpumpe - Google Patents
Sauggeregelte Zahnring-/Innenzahnradpumpe Download PDFInfo
- Publication number
- EP0712997B1 EP0712997B1 EP95115966A EP95115966A EP0712997B1 EP 0712997 B1 EP0712997 B1 EP 0712997B1 EP 95115966 A EP95115966 A EP 95115966A EP 95115966 A EP95115966 A EP 95115966A EP 0712997 B1 EP0712997 B1 EP 0712997B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working fluid
- internal gear
- duct
- gear pump
- pump according
- 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.)
- Expired - Lifetime
Links
- 230000001105 regulatory effect Effects 0.000 title description 4
- 239000012530 fluid Substances 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 26
- 238000012546 transfer Methods 0.000 description 11
- 210000003734 kidney Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001136792 Alle Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Classifications
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- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/10—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C14/12—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
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- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
Definitions
- the invention relates to an internal gear pump according to the Preamble of claim 1.
- VTC valve timing control
- a multi-phase valve timing mechanism is from the "Motortechnische Zeitschrift” 55 (1994) 6, page 342.
- the cam set used for a six-cylinder engine has two rocker arms. T-waves control depending on the speed simultaneously the two intake and exhaust valves per cylinder. At high speed hydraulic pistons connect the corresponding rocker arms to the T-shafts. At The T-shafts with the levers for low speed become low speed connected. In addition, with this mechanism there is a cylinder deactivation possible. To do this, the T-shafts of the rocker arms for the high speeds disengaged so that only three of the six cylinders are still working.
- Ordinary pumps for pumping motor oil convey their working medium with one with the Pump speed constantly increasing delivery pressure or delivery volume flow.
- the Pumps are usually mechanically driven directly from the motor via a corresponding one Toothed belt drive or another suitable gear driven, so that delivery pressure or volume flow increase with the engine speed.
- the usable pumps must be in the lower speed range of the motor have a steep increase in their volume flow.
- the known pumps are therefore large with a correspondingly high power consumption executed. As the engine speed increases, they therefore pump more engine oil than is required by the actuating means of the valve control, so that the excess must be returned directly from the pump outlet to a sump.
- a pump designed as an internal gear pump is e.g. from DE 39 33 978 known.
- the drive is usually carried out by the shaft carrying the pinion.
- the Delivery of such pumps, e.g. the lubrication pump of a motor vehicle engine is only in the lower part of the operating range proportional to the speed. At the top The lubricant or working fluid requirement increases much lower in the speed range than the speed of the engine. This is a suction control of the pump necessary.
- the cavitation that occurs is disadvantageous in such a suction control.
- the through the increase in speed expected linear pressure increase can be in the pressure range such pumps are not held, rather the pressure rises from one certain speed not linear with a lower slope.
- the full geometric delivery rate in the work area above the proportionality area cavitation occurs which leads to implosions of the gaseous components of the cell contents leads, so that unwanted noise and damage to the Cell walls are the result.
- such pumps have higher Speed ranges relatively low efficiencies.
- the invention has set itself the task an internal gear pump with minimal cavitation and high efficiency To make available, in particular for valve control can be used.
- the decisive advantage of the new internal gear pump according to the invention lies in that by the controlled supply of working fluid from the outlet mouth into an inlet mouth and the simultaneous interruption of the supply a working cell from working fluid from the inlet channel into this inlet mouth, in which pressure drop and thus cavitation occur with increasing speed would be brought to the higher outlet pressure. This will Cavitation in this delivery cell avoided.
- Another big advantage is that because no cavity, i.e. there is no negative pressure in this feed cell, but this is pressurized, this pressure has a positive torque generated on the pinion.
- This feed cell, which is under higher pressure, is working thus like a hydraulic motor, whereby a very high efficiency can be achieved can.
- the pump according to the invention connects by means of a device with increasing pressure in the pressure range sequentially the upstream at these adjacent inlet ports with the pressure area.
- the above-mentioned device advantageously has one with the outlet mouth connected transfer channel, which via a valve device in at least one feed channel opens, which in turn has an inlet opening communicates.
- the valve device can thus the regulated supply of Working fluid from the outlet mouth, i.e. the pressure area, into the Control inlet mouth and at the same time the supply of working fluid from the First throttle the inlet channel into this inlet mouth and interrupt it later.
- a valve device preferably has a valve piston which by means of a spring supported in the housing against the pressure of the working fluid stored in the transfer channel and access by means of a heel locks or releases the working fluid into the supply channels.
- the spring offers, at different choice of their stiffness, a way to control the Operating behavior of the valve device, while the head of the valve piston can be designed so that the pressurized working fluid counter the spring force presses against one of its surfaces while it is with its Side surfaces of the feed channels for the working fluid depending on the position of the Valve piston locks or releases.
- the valve piston can be in the depressurized state of the transfer channel or up to one predetermined pressure in this against the force of the spring by a stop on Housing in a position where no working fluid from the Transfer channel flows into a feed channel.
- This state corresponds to the starting position the valve device at low speed or when the Pump.
- the opposite stop point of the valve piston can thereby be determined that the valve piston in the position where working fluid from flows into all feed channels in its movement against the Direction of the spring force is stopped because the spring is locked.
- the inlet mouth for those not to be connected to the transition duct The size of the conveyor cells is preferably limited to the area in which these funding cells extend. This ensures that those Conveying cells with increasing speed with pressure from the high pressure chamber should be applied, can be completely cut off from the suction chamber.
- the outlet mouth can be approximately over the entire area of Extend conveyor cells, which in the conveying direction downstream of the conveyor cells lie, which can be connected to the transition channel. This Formation of the outlet mouth is suitable because of the connection with it standing conveyor cells under high pressure practically during the entire operation stand.
- the end facing away from the head heel forms of the valve piston together with the housing a spring chamber, which for Damping the piston movement is filled with working fluid and over a
- the bore is in fluid communication with the working fluid in the inlet duct.
- the valve device advantageously acts simultaneously as a safety valve in Form of a bypass valve. If the head is at maximum pressure in the pressure range has exceeded the last supply channel to such an extent that decompression occurs a short circuit flow of the working fluid from the pressure area in the Intake channel occurs, the spring therefore only goes to block when an sufficient discharge cross-section is created.
- the pinion of the internal gear pump has two teeth less than the toothed ring, and in the place of disengagement of the teeth is a crescent moon Filler piece fixed to the housing.
- the teeth of the toothed ring be made sufficiently pointed so that the feed cells in the suction area over the Tooth mesh are sealed against each other.
- the internal gear pump according to the invention can be characterized in that that the head of the valve piston from a heel base and a lengthways to this subsequent paragraph flag with the same outer diameter, the Guide and the sealing function of the valve piston in the housing bore on the Heels on the exterior of the heel base and heel tab occur.
- An internal gear pump according to the invention can advantageously be a suction-controlled one Pump used for valve control according to this invention become.
- FIG. 1 is a cross-sectional view of an embodiment of an inventive Internal gear pump shown.
- the pump has a housing 201 which encloses a gear chamber 206 with a gear ring 202. With the gear ring 202 meshes a pinion 203, which has one tooth less than the toothed ring 202.
- the pinion 203 forms with the toothed ring 202 successive against each other through the meshing sealing conveyor cells 210, 211, 212, 213, 214, 215 and 216.
- An inlet channel 204 opens into an inlet opening designed as an inlet kidney 207, which is shown in dashed lines.
- the inlet duct 204 is in the position shown in Figure 9 via a housing bore 217 with housing shoulders 217a, 217b, 217c and 217d with the feed channels 222a, 222b and 222c connected, which leak into the inlet ports 208a, 208b and 208c.
- the housing On the outlet side, the housing has an outlet channel 205 which is in line with that in the gear chamber 206 arranged outlet kidney 209, which is also dashed is shown, is connected. Next is the outlet kidney 209 on their the Outlet opening 205 facing away from the side is connected to a transfer duct 220, which on the side of the housing bore opposite the inlet channel 204 217 opens into the housing shoulder 217a.
- a valve device At the bottom of the case 201 a valve device is provided.
- a valve piston 221 is located in this position of the valve device in the housing bore 217, a Head shoulder 224 of this valve piston 221 with its front end in the transfer channel 220 strikes against the housing and with its side surfaces the Housing bore 217 on the housing shoulder 217a against the liquid in the transfer channel 220 seals.
- the valve piston 221 is at its rear end his rear paragraph 229 in a spring chamber 225, in which in a Spring 223 in the direction of the attachment point on the housing (in the left direction in Figure 9) against the pressure in the transfer duct 220 or against the stop of the head heel 224 on the housing 201.
- the spring chamber 225 is on the right Tightly closed with an unspecified screw plug.
- a Bore 226 in the valve piston 221 connects its surroundings with that Working fluid filled spring chamber 225, creating a damping effect entry.
- the pinion 203 is rotated in the direction indicated by the arrow n. Liquid is sucked in via the inlet channel 204 and, on the one hand, fed to the delivery cells 210 and 211 via the inlet kidney 207.
- working fluid is also supplied via the housing bore 217 in the space between the valve piston 221 and this housing bore to the feed channels 222a, 222b and 222c and via these to the inlet ports 208a, 208b and 208c, which supply the feed cells 212 and 213 with working fluid.
- the pump delivers in the proportional range, ie the delivery volume increases linearly with an increase in the speed n.
- the head shoulder 224 seals the housing bore 217 on the housing shoulder 217a against the liquid in the transfer channel 220, only the delivery cells 214, 215 and 216 are under pressure.
- the spring force F0 exerts a greater or equal pressure on the valve piston 221 as the pressure P 0 against the surface of the head heel 224 labeled AK.
- the regulation begins when the force exerted by the working fluid in the transfer channel 220 on the head heel 224 becomes greater than the spring force.
- the pinion 203 rotates at the speed n1, which is already higher than the limit speed in the proportionality range of the pump.
- the pressure of the working fluid in the pressure range would increase linearly to a pressure P 1 ' , so that the valve piston 221 is moved to the right.
- the suction angle ⁇ s is reduced from ⁇ s max (see FIG. 1) to ⁇ s1 (see FIG. 2).
- the pressure P 1 ' that could be achieved linearly cannot hold, but drops to P 1 . This means that the flow rate also drops linearly.
- a new delivery rate and a new pressure P 1 occur , which is lower than P 1 ' , but higher than P 0 .
- the setting of a pressure P 1 which is higher than the pressure P 0 , is also structurally dependent on the design of the valve device and the pump. If this pressure were not higher than P 0 , the valve piston 221 would be pushed back into the original position (FIG. 1) by the spring 223, and the process would start again because the speed is increased compared to the initial position.
- the pressure P 1 must be between P 0 and P 1 '.
- FIGS. 2 and 3 show what happens when the speed is increased further, here to the speed n 2 in FIG. 3.
- the process described above for increasing the speed continues, so that the valve piston 221 is pushed further and further to the right by the pressure increase until, for example, as shown in FIG. 3, a state is reached where the valve piston 221 with its head shoulder 224 reaches Seals the housing bore 217 on the housing shoulder 217c, so that the feed cell designated here 212 is not supplied with suctioned working fluid via the inlet channel 204, but rather via the transition channel 220 and the channels 222a and 208a with working fluid under pressure.
- the working fluid in the delivery cell 212 is at an increased pressure P 2 with the downstream delivery cells, so that no cavity is created in it and no negative pressure can develop even in spite of the increase in space.
- this pressure cell 212 generates a positive torque on the pinion 203 by the application of pressure P 2 , because its space expands under high pressure and works like a hydraulic motor.
- This internal differential control thus works with high efficiency.
- the working fluid under pressure P 2 is not decompressed to atmospheric pressure, but instead returns its potential energy as mechanical power to the pump drive shaft with a certain loss of flow through the channels.
- the suction angle in this position is designated ⁇ s2 .
- the speed n 3 is now increased to such an extent that the valve piston 221 has moved so far to the right that it seals the entire housing bore 217 with its head shoulder 224 against the working fluid in the inlet channel 204 on the housing shoulder 217d.
- the delivery chamber designated 212 and all of the downstream delivery chambers from it are now supplied with pressurized working fluid either via the outlet kidney 209 or via the transfer channel 220 and the supply and inlet channels 222a, 222b, 208a and 208b crossing them.
- the spring 223 is pressed onto the block.
- valve piston 221 If, as in FIG. 4, the valve piston 221 is pressed to the right up to the spring block, no further internal regulation can take place. With further speed increases the flow rate with reduced slope increases proportionally to the speed rise until in the remaining remaining suction tooth chambers in the area of the short suction kidney 207 cavitation occurs.
- the pump described above is mainly suitable for the supply of automatic transmissions with a pressure level up to 25 bar or higher.
- the stiffness of the spring 223 determines the steepness of the conveyor line in the regulated one Range and must be adapted to the hydraulic resistance of the consumer become.
- FIG. 5 shows a further embodiment of the invention Internal gear pump in two further aspects of the present invention emerge.
- a first aspect relates to the design of the pump with a Pinion 203, which has two teeth less than the toothed ring 202.
- teeth of the pinion 203 with the ring gear 202 except Intervention here is a crescent-shaped, housing-fixed filler 227 intended.
- the teeth 228 of the toothed ring 202 are designed to be sufficiently pointed, to ensure that the feed cells are sufficiently counter to each other in the suction area for meshing to seal.
- FIG. 5 Another aspect of the invention, which is clear from FIG. 5, relates to the safety valve effect of the valve device.
- This works as a bypass valve, if at maximum pressure in the pressure area the head attachment 224 the last feed channel 222c has exceeded so far that, under decompression, short circuit from the pressure area enters the inlet channel 204.
- the spring 223 may only block go if there is a sufficient discharge cross-section at this point is reached.
- the Head attachment 224 may be longer than the width of the cutout 230. In FIG Head attachment 224 designed accordingly. If the head base is too short, it loses Pistons his lead.
- the head shoulder 224 of the valve piston 221 here from a sales base 224a and a sales flag adjoining it longitudinally 224b with the same outside diameter.
- the leadership and sealing function of the Find valve piston 221 in the housing bore 217 on the housing shoulders the outer surfaces of the heel base 224a and the heel tab 224b.
- the Heel base 224a itself is made narrow, in particular narrower than the width of the feed channels 222 can be a good one through the milled out shoulder 224b Guidance and sealing are guaranteed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
- Figur 1
- eine Querschnittsansicht einer erfindungsgemäßen Innenzahnradpumpe, bei der die Stellung der Ventileinrichtung im Anlaufzustand der Pumpe wiedergegeben ist;
- Figur 2
- eine Querschnittsansicht der erfindungsgemäßen Innenzahnradpumpe in einem Zustand mit gegenüber der Figur 9 erhöhter Drehzahl;
- Figur. 3
- eine Querschnittsansicht der erfindungsgemäßen Innenzahnradpumpe, wobei die Drehzahl soweit angestiegen ist, daß die Ventileinrichtung bereits eine von der Zufuhr durch ihre Einlaßmündung abgetrennte Förderzelle zur Druckbeaufschlagung vom Druckbereich her freigibt;
- Figur 4
- eine Querschnittsansicht der erfindungsgemäßen Innenzahnradpumpe, bei der die Ventilvorrichtung eine Stellung eingenommen hat, in welcher alle Einlaßmündungen und Zufuhrkanäle die mit ihnen verbundenen Förderzellen mit unter Hochdruck stehender Arbeitsflüssigkeit versorgen; und
- Figur 5
- eine weitere Ausführungsform der erfindungsgemäßen Innenzahnradpumpe, wobei das Ritzel zwei Zähne weniger aufweist als der Zahnring und an der Stelle des Außereingriffkommens der Zähne ein mondsichelförmiges, gehäusefestes Füllstück vorgesehen ist.
Claims (12)
- Innenzahnradpumpe mitdadurch gekennzeichnet, daß die Einrichtung (220, 221, 222) bei steigendem Druck im Druckbereich die an diesen stromaufwärts nacheinander angrenzenden Einlaßmündungen (208a, 208b, 208c) mit diesem verbindet.a) einem Gehäuse (201) mit einer Zahnradkammer (206),b) einem Zahnring (202) im Gehäuse (201),c) einem im Zahnring (202) angeordneten, mit diesem kämmenden Ritzel (203), das mindestens einen Zahn weniger aufweist als der Zahnring (202) und mit diesem zusammen aufeinanderfolgende gegeneinander durch den Zahneingriff abdichtende Förderzellen (210, 211, 212, 213, 214, 215, 216) für die Arbeitsflüssigkeit ausbildet, undd) mindestens einem Einlaßkanal (204) und mindestens einem Auslaßkanal (205) für die Arbeitsflüssigkeit im Gehäuse (201),e) wobei die Arbeitsflüssigkeit aus dem Einlaßkanal über mindestens eine Einlaßmündung (207, 208a, 208b, 208c) in den Ansaugbereich der Zahnradkammer (206) zugeführt wird und über mindestens eine Auslaßmündung (209) aus dem Druckbereich der Zahnradkammer (206) in den Auslaßkanal (205) abgeführt wird, sowie mitf) einer Einrichtung (220, 221, 222), welche eine geregelte Menge der Arbeitsflüssigkeit aus der Auslaßmündung (209) in mindestens eine Einlaßmündung (208a, 208b, 208c) zuführt, während sie gleichzeitig die Zufuhr von Arbeitsflüssigkeit aus dem Einlaßkanal (204) in diese Einlaßmündung (208a, 208b, 208c) unterbricht.
- Innenzahnradpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung (220, 221, 222) einen mit der Auslaßmündung (209) verbundenen Übertrittskanal (220) aufweist, der über eine Ventilvorrichtung (221, 222, 223) in mindestens einen Zufuhrkanal (222a, 222b, 222c) mündet, welcher wiederum mit einer Einlaßmündung (208a, 208b, 208c) in Verbindung steht.
- Innenzahnradpumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Ventilvorrichtung (221, 223, 224) einen Ventilkolben (221) aufweist, der mittels einer im Gehäuse (201) abgestützten Feder (223) gegen den Druck der Arbeitsflüssigkeit im Übertrittskanal (220) angestellt gelagert ist und mittels eines Kopfabsatzes (224) den Zugang der Arbeitsflüssigkeit in die Zufuhrkanäle (222a, 222b, 222c) sperrt oder freigibt.
- Innenzahnradpumpe nach Anspruch 3, dadurch gekennzeichnet, daß der Ventilkolben (221) im drucklosen Zustand des Übertrittskanals (220), bzw. bis zu einem vorbestimmten Druck in diesem, gegen die Kraft der Feder (223) durch einen Anschlag am Gehäuse (201) in einer Stellung gehalten wird, wo keine Arbeitsflüssigkeit aus dem Übertrittskanal (220) in einen Zufuhrkanal (222) fließt.
- Innenzahnradpumpe nach einem der Anprüche 3 oder 4, dadurch gekennzeichnet, daß der Ventilkolben (221) in der Stellung, wo Arbeitsflüssigkeit aus dem Übertrittskanal (220) in alle Zufuhrkanäle (222) einfließt, dadurch in seiner Bewegung gegen die Richtung der Federkraft angehalten wird, daß die Feder (223) blockiert wird.
- Innenzahnradpumpe nach einem der Anprüche 1 bis 5, dadurch gekennzeichnet, daß die Einlaßmündung (207) für die nicht mit dem Übertrittskanal (220) zu verbindenden Förderzellen (210, 211) in ihrer Größe auf etwa den Bereich beschränkt ist, in dem sich diese Förderzellen erstrecken.
- Innenzahnradpumpe nach einem der Anprüche 1 bis 6, dadurch gekennzeichnet, daß die Auslaßmündung (209) sich etwa über den gesamten Bereich der Förderzellen (214, 215, 216) erstreckt, die in Förderrichtung stromabwärts von den Förderzellen (212, 213) liegen, die mit dem Übertrittskanal (220) verbunden werden können.
- Innenzahnradpumpe nach einem der Anprüche 1 bis 7, dadurch gekennzeichnet, daß das dem Kopfabsatz (224) abgewandte Ende des Ventilkolbens (221) zusammen mit dem Gehäuse (201) eine Federkammer (225) ausbildet, die zur Dämpfung der Kolbenbewegung mit Arbeitsflüssigkeit gefüllt ist und über eine Bohrung (226) in Flüssigkeitsverbindung mit der Arbeitsflüssigkeit im Einlaßkanal (204) steht.
- Innenzahnradpumpe nach einem der Anprüche 1 bis 8, dadurch gekennzeichnet, daß die Ventilvorrichtung (221, 223, 224) gleichzeitig als Sicherheitsventil in der Form eines Bypaßventils wirkt, wenn bei Höchstdruck im Druckbereich der Kopfabsatz (224) den letzten Zufuhrkanal (222c) soweit überschritten hat, daß unter entstandener Dekompression eine Kurzschlußströmung der Arbeitsflüssigkeit vom Druckbereich in den Einlaßkanal (204) auftritt.
- Innenzahnradpumpe nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Ritzel (203) zwei Zähne weniger aufweist als der Zahnring (202) und an der Stelle des Außer-Eingriff-Kommens der Zähne ein mondsichelförmiges, gehäusefestes Füllstück vorgesehen ist.
- Innenzahnradpumpe nach Anspruch 10, dadurch gekennzeichnet, daß die Zähne des Zahnringes ausreichend spitz ausgeführt sind, so daß im Saugbereich die Förderzellen (210, 211, 212) über den Zahneingriff gegeneinander abgedichtet sind.
- Innenzahnradpumpe nach einem der Ansprüche 3 bis 11, dadurch gekennzeichnet, daß der Kopfabsatz (224) des Ventilkolbens (221) aus einer Absatzbasis (224a) und einer längs an diese anschließenden Absatzfahne (224b) mit gleichem Außendurchmesser besteht, wobei die Führung und die Dichtfunktion des Ventilkolbens (221) in der Gehäusebohrung (217) an den Gehäuseabsätzen (217a, 217b, 217c, 217d) an den Außenflächen der Absatzbasis (224a) und der Absatzfahne (224b) stattfinden.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19944437076 DE4437076C2 (de) | 1994-10-17 | 1994-10-17 | Ventilsteuerung mit sauggeregelter Zahnringpumpe |
| DE4437076 | 1994-10-17 | ||
| DE1995123533 DE19523533C2 (de) | 1995-06-28 | 1995-06-28 | Sauggeregelte Innenzahnradpumpe |
| DE19523533 | 1995-06-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0712997A2 EP0712997A2 (de) | 1996-05-22 |
| EP0712997A3 EP0712997A3 (de) | 1996-08-28 |
| EP0712997B1 true EP0712997B1 (de) | 2000-04-12 |
Family
ID=25941128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95115966A Expired - Lifetime EP0712997B1 (de) | 1994-10-17 | 1995-10-10 | Sauggeregelte Zahnring-/Innenzahnradpumpe |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US5738501A (de) |
| EP (1) | EP0712997B1 (de) |
| JP (2) | JP2825782B2 (de) |
| KR (1) | KR960014598A (de) |
| CN (1) | CN1131731A (de) |
| BR (1) | BR9504427A (de) |
| CA (1) | CA2159672C (de) |
| DE (1) | DE59508170D1 (de) |
| ES (1) | ES2146694T3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008056629A1 (de) | 2008-11-10 | 2009-07-23 | Audi Ag | Innenzahnradpumpe mit variablem Fördervolumen |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69721092T2 (de) * | 1996-01-19 | 2003-12-11 | Aisin Seiki K.K., Kariya | Ölpumpenanlage |
| US6004111A (en) * | 1997-04-28 | 1999-12-21 | Aisin Seiki Kabushiki Kaisha | Oil pump apparatus |
| JPH11280667A (ja) | 1998-03-27 | 1999-10-15 | Aisin Seiki Co Ltd | オイルポンプ装置 |
| EP1008754B1 (de) * | 1998-12-11 | 2004-03-10 | Dana Automotive Limited | Verdrängerpumpe-Anlagen |
| JP4209653B2 (ja) * | 2002-09-25 | 2009-01-14 | アイシン精機株式会社 | 自動変速機用オイルポンプ |
| JP4366645B2 (ja) | 2003-11-06 | 2009-11-18 | アイシン精機株式会社 | エンジンの油供給装置 |
| US7637725B2 (en) * | 2004-10-25 | 2009-12-29 | Ford Global Technologies | Variable output gerotor pump |
| WO2006067489A2 (en) * | 2004-12-22 | 2006-06-29 | Connaught Motor Company Ltd | Compact output speed reduction system |
| GB2441773B (en) * | 2006-09-15 | 2011-02-23 | Concentric Vfp Ltd | Engine Lubricant Pump Control System |
| JP4687991B2 (ja) * | 2006-11-07 | 2011-05-25 | アイシン精機株式会社 | エンジンの油供給装置 |
| WO2009112789A1 (en) * | 2008-03-13 | 2009-09-17 | Concentric Vfp Limited | Pump control system |
| US8007248B2 (en) * | 2008-07-16 | 2011-08-30 | GM Global Technology Operations LLC | Engine speed dependent oil pump pressure regulation |
| US8292597B2 (en) | 2008-10-16 | 2012-10-23 | Pratt & Whitney Canada Corp. | High-speed gear pump |
| DE102010019933A1 (de) * | 2010-05-08 | 2011-11-10 | Volkswagen Ag | Verfahren zum Betreiben einer Brennkraftmaschine mit mehrstufiger Ölpumpe |
| US8801396B2 (en) | 2010-06-04 | 2014-08-12 | Chrysler Group Llc | Oil pump system for an engine |
| JP5690238B2 (ja) * | 2011-07-26 | 2015-03-25 | 日立オートモティブシステムズ株式会社 | 可変容量形オイルポンプ |
| 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 |
| CN103498793B (zh) * | 2013-10-24 | 2017-02-15 | 北京航空航天大学 | 一种变量齿轮泵 |
| CN104776020B (zh) * | 2015-04-07 | 2018-01-02 | 金湖县常盛动力机械配件有限公司 | 一种齿轮式输油泵 |
| JP6309658B1 (ja) * | 2017-01-17 | 2018-04-11 | 瑞章精密工業股▲分▼有限公司 | 多段階式可変容量形オイルポンプ |
| WO2018196991A1 (en) * | 2017-04-28 | 2018-11-01 | Pierburg Pump Technology Gmbh | A variable displacement liquid pump |
| UA126809C2 (uk) * | 2017-08-29 | 2023-02-08 | Атлас Копко Еірпауер, Наамлозе Веннотшап | Машина, яка має олійну помпу, і спосіб запуску такої машини |
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| CN119508215B (zh) * | 2024-11-18 | 2025-10-31 | 合肥集源穗意液压技术股份有限公司 | 一种可调节压力的低噪音齿轮泵 |
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| US2509321A (en) * | 1946-07-19 | 1950-05-30 | Gulf Research Development Co | Rotary fluid unit for take-off under variable control |
| US3272128A (en) * | 1964-06-15 | 1966-09-13 | Emerson Electric Co | Variable volume reversible hydraulic device |
| JPS543B2 (de) * | 1974-02-28 | 1979-01-05 | ||
| US4255093A (en) * | 1979-03-23 | 1981-03-10 | Sundstrand Corporation | Combined lift and metering pump |
| DE2933493A1 (de) * | 1979-08-18 | 1981-03-26 | Daimler-Benz Aktiengesellschaft, 70567 Stuttgart | Zahnradpumpe |
| DE3523531A1 (de) * | 1984-07-02 | 1986-02-13 | Honda Giken Kogyo K.K., Tokio/Tokyo | Ventilbetaetigungseinrichtung mit sperrfunktion fuer einen verbrennungsmotor |
| JPH01138394A (ja) * | 1987-11-20 | 1989-05-31 | Honda Motor Co Ltd | 車輌用冷媒圧縮機の容量制御装置 |
| DE3913414A1 (de) * | 1989-04-24 | 1990-10-25 | Walter Schopf | Mehrkreis-regelpumpe |
| DE3933978A1 (de) * | 1989-10-11 | 1991-05-02 | Eisenmann Siegfried A | Sauggeregelte zahnringpumpe |
| JP2823921B2 (ja) * | 1990-01-30 | 1998-11-11 | 豊興工業株式会社 | リリーフ弁付き液圧ポンプ |
| JPH04132414U (ja) * | 1991-05-29 | 1992-12-08 | 株式会社アツギユニシア | 内燃機関のバルブタイミング制御装置 |
| DE4209143C1 (de) * | 1992-03-20 | 1993-04-15 | Siegfried A. Dipl.-Ing. 7960 Aulendorf De Eisenmann | |
| DE4330586A1 (de) | 1993-03-05 | 1994-09-08 | Eisenmann Siegfried A | Innenzahnradpumpe für großen Drehzahlbereich |
| EP0619430B1 (de) * | 1993-03-05 | 1997-07-23 | Siegfried A. Dipl.-Ing. Eisenmann | Innenzahnradpumpe für grossen Drehzahlbereich |
| JP3531769B2 (ja) * | 1994-08-25 | 2004-05-31 | アイシン精機株式会社 | オイルポンプ装置 |
-
1995
- 1995-10-02 CA CA002159672A patent/CA2159672C/en not_active Expired - Lifetime
- 1995-10-10 DE DE59508170T patent/DE59508170D1/de not_active Expired - Fee Related
- 1995-10-10 ES ES95115966T patent/ES2146694T3/es not_active Expired - Lifetime
- 1995-10-10 EP EP95115966A patent/EP0712997B1/de not_active Expired - Lifetime
- 1995-10-13 KR KR1019950035270A patent/KR960014598A/ko not_active Abandoned
- 1995-10-16 CN CN95116181A patent/CN1131731A/zh active Pending
- 1995-10-17 BR BR9504427A patent/BR9504427A/pt not_active Application Discontinuation
- 1995-10-17 US US08/544,074 patent/US5738501A/en not_active Expired - Lifetime
- 1995-10-17 JP JP26889595A patent/JP2825782B2/ja not_active Expired - Fee Related
-
1997
- 1997-11-12 US US08/969,055 patent/US5842449A/en not_active Expired - Lifetime
-
1998
- 1998-03-12 JP JP6176098A patent/JP3292458B2/ja not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008056629A1 (de) | 2008-11-10 | 2009-07-23 | Audi Ag | Innenzahnradpumpe mit variablem Fördervolumen |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10317932A (ja) | 1998-12-02 |
| US5842449A (en) | 1998-12-01 |
| EP0712997A3 (de) | 1996-08-28 |
| CN1131731A (zh) | 1996-09-25 |
| EP0712997A2 (de) | 1996-05-22 |
| JPH08210116A (ja) | 1996-08-20 |
| JP2825782B2 (ja) | 1998-11-18 |
| BR9504427A (pt) | 1997-05-20 |
| DE59508170D1 (de) | 2000-05-18 |
| KR960014598A (ko) | 1996-05-22 |
| JP3292458B2 (ja) | 2002-06-17 |
| CA2159672A1 (en) | 1996-04-18 |
| CA2159672C (en) | 2009-09-15 |
| ES2146694T3 (es) | 2000-08-16 |
| US5738501A (en) | 1998-04-14 |
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