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EP1111234B1 - Pompe à carburant - Google Patents

Pompe à carburant Download PDF

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Publication number
EP1111234B1
EP1111234B1 EP00127312A EP00127312A EP1111234B1 EP 1111234 B1 EP1111234 B1 EP 1111234B1 EP 00127312 A EP00127312 A EP 00127312A EP 00127312 A EP00127312 A EP 00127312A EP 1111234 B1 EP1111234 B1 EP 1111234B1
Authority
EP
European Patent Office
Prior art keywords
pump according
shaft
eccentric
coupling element
drive
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
Application number
EP00127312A
Other languages
German (de)
English (en)
Other versions
EP1111234A3 (fr
EP1111234A2 (fr
Inventor
Edwin Palesch
Gerold Sluka
Rolf Naumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1111234A2 publication Critical patent/EP1111234A2/fr
Publication of EP1111234A3 publication Critical patent/EP1111234A3/fr
Application granted granted Critical
Publication of EP1111234B1 publication Critical patent/EP1111234B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0413—Cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/211—Eccentric
    • Y10T74/2111—Plural, movable relative to each other [including ball[s]]
    • Y10T74/2112—Concentric

Definitions

  • the invention relates to a pump, in particular for conveying fuel in an internal combustion engine of a motor vehicle, according to the preamble of claim 1.
  • feed pumps that continuously promote fuel, especially diesel, from a tank into a store. To him are connected via solenoid valves cylinder of the engine. Most of the fuel is delivered from the reservoir via pressure relief valves to the tank, since only a fraction of the continuously delivered fuel is needed for the combustion process in the cylinders. The constant return of the fuel results in a poor efficiency. Due to the continuous promotion and return promotion, there is also a strong heat development. Therefore, plastic can not be used as the material, but only the more expensive metal.
  • a suction throttle is also known.
  • Check valves ensure that fuel is always available for the combustion process.
  • the check valves or their springs have tolerances, so that different amounts of fuel get into the cylinder. Due to the varying degree of filling high pulsations occur, which lead to a strong noise. Also, the mechanical load on the engine cylinders and their pistons is very high.
  • proportional solenoid valves are set to a middle position, so that only a part of the fuel is conveyed. Due to tolerances of the springs of the proportional solenoid valves are different in the piston chamber Quantities of fuel.
  • an eccentric drive with an inner and an outer eccentric is provided.
  • On the outer eccentric sits a sleeve-shaped drive element, abut on the cylindrical outer surface piston.
  • the two eccentrics are elastically connected to each other via a torsion spring. It causes, during operation of the pump, the eccentricity is automatically adjusted depending on the load.
  • the pump forms a self-regulating pump unit in which the degree of eccentricity and thus the delivery rate is changed depending on the respective load. With the elastic torsion spring, however, an exact adjustment of the eccentric is not guaranteed.
  • the eccentric drive also has an inner and an outer eccentric. On the outer surface of the outer eccentric slide are on.
  • the Exzenternite can by relative twisting the eccentric can be adjusted.
  • the drive required for this purpose is structurally very complicated.
  • the invention has the object of providing the generic pump in such a way that it has a good efficiency and reliably promotes the fuel necessary for the combustion process.
  • the drive element is driven by means of the eccentric drive.
  • the drive element is adjusted to a different degree translationally in the plane lying transversely to the shaft.
  • the stroke of a piston can be continuously adjusted from zero to a maximum value in order to convey a corresponding amount of fuel into the combustion chamber of an engine cylinder.
  • the eccentric drive is coupled to the shaft, the eccentricity can be adjusted in a simple manner as a function of the rotational speed of the internal combustion engine.
  • the drive element is supported by the coupling member against rotation. With the counter guide part, the coupling member is guided in the guide of the housing transversely to the shaft slidably.
  • the drive element can thereby join the eccentric movement, but is prevented from rotating about its axis.
  • To adjust the eccentricity of the eccentric drive is coupled to the adjustment.
  • the rotatably connected to the shaft adjustment in the form of the rotor can be rotated relative to the stator. In this way, a targeted adjustment of the eccentric dimension is possible.
  • the eccentric drive allows a compact design of the pump. It is particularly suitable for common rail systems.
  • the pump is preferably used for common rail systems, as used in motor vehicles for conveying fuel, in particular diesel.
  • fuel in particular diesel.
  • the pump can also be used in other areas, such as in the field of high-pressure technology, water jet cutting technology, hydroforming, clamping technology, machine tools and the like.
  • the pump has a housing 1 (Fig. 1), which is penetrated by a rotatably driven shaft 2. Near the bottom 3 of the housing 1 sits on the shaft 2 rotatably a rotor 4, which has at least two diametrically opposed, radially extending wings 5.
  • the rotor 4 is surrounded by a stator 6 which is mounted rotatably relative to the rotor 4 on the shaft 2.
  • the stator 6 is penetrated by the shaft 2 and has two chambers separated by a transverse web, in each of which a rotor blade 5 protrudes.
  • the rotor 4 with the stator 6 forms a Schwenkerielversteller, which is known and therefore not described in detail.
  • each rotor blade 5 divides the stator chamber into two sections. In each case a chamber portion of the two chambers is introduced via the shaft 2 in a known manner hydraulic medium. In this way, the relative rotation between the rotor 4 and stator 6 can be made.
  • the shaft 2 is provided with an inner eccentric 8, which is advantageously formed integrally with the shaft 1.
  • the inner eccentric 8 is arranged with respect to the shaft 2 so as to have a common tangent at a location 9 ( Figure 3a).
  • FIG. 1 On the inner eccentric 8, with the interposition of a bearing 10 (FIG. 1), there is an outer eccentric 11, which advantageously has the same axial length as the inner eccentric 8.
  • the outer eccentric 11 is in turn surrounded by a slide 13 with the interposition of a bearing 12 (FIGS. 1 and 2).
  • a bearing 12 FIGS. 1 and 2.
  • FIG. 2 the link 13 has a substantially triangular outline.
  • the gate 13 is provided with three such surfaces 15 to 17, on each of which a piston 14 rests.
  • only one piston 14 is indicated for the sake of clarity.
  • the flat surfaces 15 to 17 are interconnected by curved surfaces 18 to 20, which lie on a common circular arc or cylinder jacket.
  • the link 13 is guided over at least one coupling member 21 on the housing 1.
  • the coupling member 21 has an annular part 22 which sits on the shaft 2 outside the inner eccentric 8 and from which two arms 23, 24 protrude diametrically opposite each other radially. They engage in fixed guides 25 and 26.
  • the arms 23, 24 of the coupling member 21 have mutually parallel and extending in the radial direction of the longitudinal sides 27, 28; 29, 30, with which they are guided on corresponding mating surfaces of the housing-side guides 25, 26 in the radial direction.
  • the guides 25, 26 are arranged or the arms 23, 24 so long that in each displacement position of the coupling member 21, the arms 23, 24 are guided on the guides 25, 26. So that the coupling member 21 in the longitudinal direction of the arms 23, 24 can be moved relative to the shaft 2, the ring member 22 of the coupling member 21 is provided with a corresponding slot 31. Its width corresponds to the diameter of the shaft second
  • the arms 23, 24 may also be fork-shaped, so that they surround the housing-side guides 25, 26.
  • the coupling member 21 is provided with guides 32, 33 (Fig. 2), which are also diametrically opposed to each other and at an angular distance of 90 ° to the guides 25, 26 have.
  • the guides 32, 33 serve to guide counter guide parts 34, 35, which are provided on the gate 13.
  • the guides 25, 26 and 32, 33 may lie in a common radial plane of the shaft 2, but may also be arranged in axially spaced radial planes of the shaft 2. Due to the guidance of the link 13 in the coupling member 21, which in turn is guided on the housing 1, it is ensured that the coupling member 21 performs no rotational movement during the rotation of the shaft 2, but is displaced transversely to the shaft 2. This will be explained in more detail with reference to FIGS. 2a to 2c.
  • the coupling member 21 is located on one side of the two eccentrics 8, 11.
  • a further coupling member 36 is provided, with which the outer eccentric 11 is coupled to the stator 6.
  • the coupling member 36 is seated on the shaft 2 and has diametrically opposite one another two guides 37, 38, with which counter guide parts 39, 40 of the outer eccentric 11 are guided radially.
  • the coupling member 36 is also provided with two further, diametrically opposed guides 41, 42, which have an angular distance of 90 ° from the guides 37, 38 and by means of which counter guide parts 43, 44 of the stator 6 are guided radially.
  • the coupling member 36 can be moved in the same way as the coupling member 21 in a radial plane with respect to the shaft 2.
  • the coupling member 36 is provided with a slot (not shown) whose width corresponds to the diameter of the shaft 2.
  • the eccentricity of the gate 13 can be adjusted continuously.
  • the slide 13 transmits in their sliding movement the set eccentricity on the piston 14.
  • Each piston 14 is by a (not shown) compression spring burdened in the direction of its attachment to the backdrop 13. The spring force is only so high that the piston 14 clean abut the flat sides 15 to 17 of the piston 14.
  • FIGS. 3a to 3c one of the rotor blades 5 is shown schematically, which engages in the chamber 45 of the stator 6.
  • the rotor blade 5 bears against an end wall 46 of the stator chamber 45.
  • the outer eccentric 11 is rotated with respect to the inner eccentric 8, that the coupling member 36 occupies a central position with respect to the axis 47 of the shaft 2. If the shaft 2 is rotatably driven, therefore, the coupling member 36 is not reciprocated.
  • the coupling member 36 executes a reciprocating movement in the XY plane as a function of the eccentric movement of the two eccentrics 8, 11. Since the gate 13 is seated on the outer eccentric 11, it is also reciprocated in the XY plane according to the eccentricity, wherein about their flat surfaces 15 to 17, the pistons 14 are actuated. They perform a certain stroke according to the set eccentricity. Since in the illustrated embodiment, the rotor 4 has been rotated relative to the stator 6 by 90 ° and the stator chamber 45 extends over an angular range of 180 °, in the position shown in FIG. 3b, the half stroke of the piston 14 is generated.
  • the eccentricity of the eccentric drive 8, 11 can be adjusted continuously with the Schwenkhofflversteller 7, so that the stroke of the piston 14 can be adjusted according to sensitive and adapted to the desired requirements.
  • Figs. 2a to 2d show different positions of the link 13 and the coupling member 21 when the shaft 2 is rotated about its axis 47.
  • the link 13 and the coupling member 21 connected thereto are moved in the X-Y plane.
  • the housing-fixed guides 25, 26 prevent the coupling member 21 is rotated about its axis. It is merely, as a comparison of FIGS.
  • 2a to 2d shows, translationally displaced in the XY plane, wherein the guide on the arms 23, 24 and the housing-fixed guides 25, 26 and the guides 32, 33 of the coupling member 21 and the associated counter guide parts 34, 35 of the gate 13 takes place.
  • the housing-fixed guides 25, 26 catch the friction moments, which are exerted by the piston 14 on the link 13 in their translational movement.
  • the shaft 2 is rotated clockwise.
  • the link 13 which is arranged on the outer eccentric 11, translationally in the X-Y plane shifted to the left, the link 13 is guided with their counter guide parts 34, 35 through the guides 32, 33 of the coupling member 21.
  • the coupling member 21 in turn is guided by its arms 23, 24 through the housing-side guides 25, 26.
  • FIG. 2d shows a position that results when the shaft 2 has been rotated by a further 90 ° clockwise. Now the backdrop 13 is moved furthest to the right. The coupling member 21 has been moved upwards again compared to the position shown in FIG. 2c.
  • the stroke of the piston 14 can be adjusted continuously between zero and a maximum value.
  • a relative rotation between the stator 6 and the rotor 4 is made in the manner described. Since the rotor 4 rotatably connected to the shaft 2 and the outer eccentric 11 is coupled via the coupling member 36 with the stator 6, the inner eccentric 8 is rotated relative to the outer eccentric 11 by turning the shaft 2. In this way, the eccentricity of the eccentric drive 8, 11 can be sensitively and continuously adjusted.
  • the guide 13 located on the outer eccentric 11 is translationally moved in a radial plane (X-Y plane) of the shaft 2 when the shaft 2 is rotatably driven. According to the eccentricity of the stroke of the voltage applied to the gate 13 piston 14 is adjusted.
  • the pump has a very compact design and consists of simple components, so that the pump works properly over a long period of use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (19)

  1. Pompe, particulièrement pour le transport de carburant dans un moteur à combustion interne d'un véhicule automobile avec un boîtier (1), dans lequel un arbre (2) est monté rotativement, par lequel l'excentricité d'un entraînement excentrique (8, 11) est ajustable par lequel au moins un élément d'entraînement (13) peut être actionné, lequel est ajustable par translation dans un plan placé transversalement à l'arbre (2) et est disposé sur un excentrique externe (11), lequel est monté sur un excentrique interne (8), prévu sur l'arbre (2),
    caractérisé en ce que l'élément d'entraînement (13) est appuyé au boîtier (1) contre la torsion par au moins un élément de couplage (21), lequel est guidé dans son déplacement transversalement à l'arbre (2) par au moins un élément de contre-support (23, 24) dans au moins un guidage (25, 26) du boîtier (1) et que l'entraînement excentrique (8, 11) est couplé avec un dispositif d'ajustage (7) lequel comprend au moins un élément d'ajustage (4), relié de façon solidaire en rotation avec l'arbre (2), lequel élément est un rotor, tournant relativement contre un stator (6).
  2. Pompe selon revendication 1,
    caractérisé en ce que l'excentrique intérieur (8) est formé d'un seul tenant avec l'arbre (2).
  3. Pompe selon revendication 1 ou 2,
    caractérisé en ce que l'élément d'entraînement (13) entoure l'excentrique extérieur (11).
  4. Pompe selon une des revendications 1 à 3,
    caractérisé en ce que l'excentrique extérieur (11) entoure l'excentrique intérieur (8).
  5. Pompe selon une des revendications 1 à 4,
    caractérisé en ce que l'élément d'entraînement (13) comprend au moins une surface de contact (15 à 17) pour au moins un piston (14).
  6. Pompe selon une des revendications 1 à 5,
    caractérisé en ce que l'élément de couplage (21) est pénétré par l'arbre (2).
  7. Pompe selon une des revendications 1 à 6,
    caractérisé en ce que l'élément de couplage (21) est déplaçable de façon translatoire dans un plan situé transversalement à l'arbre (2).
  8. Pompe selon une des revendications 1 à 7,
    caractérisé en ce que l'élément de couplage (21) est guidé radialement par rapport à l'arbre (2) au boîtier (1).
  9. Pompe selon une des revendications 1 à 8,
    caractérisé en ce que le boîtier (1) comprend deux guidages (25, 26) opposés l'un à l'autre diamétralement pour des éléments de contre-support (23, 24) de l'élément de couplage (21).
  10. Pompe selon une des revendications 1 à 9,
    caractérisé en ce que l'élément de couplage (21) comprend au moins un guidage (32, 33) pour au moins un élément de contre-support (34, 35) d'élément d'entraînement (13).
  11. Pompe selon une des revendications 1 à 10,
    caractérisé en ce que l'élément d'entraînement (13) est guidé radialement par rapport à l'arbre (2) à l'élément de couplage (21).
  12. Pompe selon revendication 10 ou 11,
    caractérisé en ce que l'élément de couplage (21) comprend deux guidages (32, 33), opposés l'un à l'autre diamétralement de préférence placés perpendiculairement au guidage (25, 26) du boîtier (1) pour des éléments de contre-support (34, 35) correspondants de l'élément d'entraînement (13).
  13. Pompe selon une des revendications 1 à 12,
    caractérisé en ce que l'élément d'ajustage (4) est déplaçable hydrauliquement.
  14. Pompe selon une des revendications 1 à 13,
    caractérisé en ce que l'entraînement excentrique (8, 11) est couplé au moyen d'un autre élément de couplage (36) avec le dispositif d'ajustement (7).
  15. Pompe selon revendication 14,
    caractérisé en ce que l'autre élément de couplage (36) est ajustable radialement par rapport à l'arbre (2).
  16. Pompe selon revendication 14 ou 15,
    caractérisé en ce que l'autre élément de couplage (36) comprend au moins deux guidages (37, 38 ; 41, 42), placés en écart angulaire, de préférence perpendiculairement l'un à l'autre pour des éléments de contre-support (39, 40 ; 43, 44) de l'excentrique extérieur (11) et du stator (6).
  17. Pompe selon une des revendications 1 à 16,
    caractérisé en ce que le stator (6) et le rotor (4) fait partie d'un élément de réglage pivotant à palettes.
  18. Pompe selon revendication 16 ou 17,
    caractérisé en ce que les guidages (37, 38 ; 41, 42) de l'autre élément de couplage (36) sont prévus respectivement opposés diamétralement l'un par rapport à l'autre.
  19. Pompe selon une des revendications 16 à 18,
    caractérisé en ce que l'autre élément de couplage (36) est pénétré par l'arbre (2).
EP00127312A 1999-12-20 2000-12-13 Pompe à carburant Expired - Lifetime EP1111234B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19961558A DE19961558A1 (de) 1999-12-20 1999-12-20 Pumpe, insbesondere zur Förderung von Kraftstoff in einem Verbrennungsmotor eines Kraftfahrzeuges
DE19961558 1999-12-20

Publications (3)

Publication Number Publication Date
EP1111234A2 EP1111234A2 (fr) 2001-06-27
EP1111234A3 EP1111234A3 (fr) 2002-12-18
EP1111234B1 true EP1111234B1 (fr) 2006-04-26

Family

ID=7933481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127312A Expired - Lifetime EP1111234B1 (fr) 1999-12-20 2000-12-13 Pompe à carburant

Country Status (4)

Country Link
US (1) US6454544B2 (fr)
EP (1) EP1111234B1 (fr)
JP (1) JP2001193603A (fr)
DE (2) DE19961558A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10139519A1 (de) 2001-08-10 2003-02-27 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckerzeugung, sowie Verfahren zum Betreiben einer Brennkraftmaschine, Computerprogramm und Steuer- und/oder Regelgerät
DE10238722A1 (de) 2002-08-23 2004-03-11 Bayer Ag Selektive Phosphodiesterase 9A-Inhibitoren als Arzneimittel zur Verbesserung kognitiver Prozesse
US8044060B2 (en) * 2003-05-09 2011-10-25 Boehringer Ingelheim International Gmbh 6-cyclylmethyl- and 6-alkylmethyl pyrazolo[3,4-D]pyrimidines, methods for their preparation and methods for their use to treat impairments of perception, concentration learning and/or memory
DE102006021723A1 (de) * 2006-05-05 2007-11-08 Golle, Hermann, Dr. Hubverstelleinrichtung für Doppelexzenterantriebe

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US852033A (en) * 1905-11-06 1907-04-30 Raoul Philippe Motor.
US2223100A (en) * 1938-04-01 1940-11-26 Edwin E Foster Internal combustion engine
US2513514A (en) * 1945-10-08 1950-07-04 Robert A Poage Piston and crankshaft connecting means for internal-combustion engines
US2592237A (en) * 1950-01-11 1952-04-08 Builders Iron Foundry Pump stroke adjusting device
US2815670A (en) * 1954-08-10 1957-12-10 Jorgensen Oscar Halfdan Stepless variable-speed powertransmission device
DE1907349A1 (de) * 1969-02-14 1970-08-20 Siemens Ag Vorrichtung zum Verstellen einer Exzenteranordnung
CH539772A (de) * 1971-06-21 1973-07-31 Sulzer Ag Hydraulische Kolbenmaschine mit radial angeordneten Kolben
US4078439A (en) * 1974-10-15 1978-03-14 Iturriaga Notario Luis Alternative reciprocating compressor
US4245966A (en) * 1978-01-30 1981-01-20 Westinghouse Electric Corp. Reciprocating piston device with changeable stroke length
DE3421632C2 (de) * 1984-06-09 1986-07-03 Küsters, Eduard, 4150 Krefeld Vorrichtung zum oszillierenden Linearantrieb eines mit einer umlaufenden Walze oder dergleichen zusammenwirkenden Bauteils
DE4004142A1 (de) * 1990-02-10 1991-08-14 Ingelheim Peter Graf Von Kolbenmaschine mit verstellbarem foerdervolumen
DE4007005C1 (fr) * 1990-03-06 1991-10-17 Sulzer-Escher Wyss Gmbh, 7980 Ravensburg, De
JPH0823385B2 (ja) * 1990-05-08 1996-03-06 ブリヂストンサイクル株式会社 摩擦式無段変速装置
DE19650274A1 (de) * 1996-12-04 1998-06-10 Teves Gmbh Alfred Pumpenaggregat

Also Published As

Publication number Publication date
US6454544B2 (en) 2002-09-24
US20010004441A1 (en) 2001-06-21
EP1111234A3 (fr) 2002-12-18
DE19961558A1 (de) 2001-06-21
JP2001193603A (ja) 2001-07-17
DE50012643D1 (de) 2006-06-01
EP1111234A2 (fr) 2001-06-27

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