EP2513470A2 - Verfahren zur bestimmung des schluckvolumes einer radialkolbenmaschine - Google Patents
Verfahren zur bestimmung des schluckvolumes einer radialkolbenmaschineInfo
- Publication number
- EP2513470A2 EP2513470A2 EP10787367A EP10787367A EP2513470A2 EP 2513470 A2 EP2513470 A2 EP 2513470A2 EP 10787367 A EP10787367 A EP 10787367A EP 10787367 A EP10787367 A EP 10787367A EP 2513470 A2 EP2513470 A2 EP 2513470A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive shaft
- angle
- rotation
- displacement
- radial piston
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
- F03C1/0447—Controlling
- F03C1/0457—Controlling by changing the effective piston stroke
- F03C1/046—Controlling by changing the effective piston stroke by changing the excentricity of one element relative to another element
-
- 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
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
- F04B1/0531—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with cam-actuated distribution members
-
- 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
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
Definitions
- the invention relates to a method for determining the absorption volume of a radial piston machine according to the preamble of claim 1.
- the delivery rate of a radial piston machine ie a radial piston motor or a radial piston pump is directly dependent on the absorption volume, which is variable by adjusting the eccentricity.
- the current intake volume would be suitable as a reference variable - however, neither the intake volume nor the currently set eccentricity can be measured.
- a contactless rotation angle sensor for an adjustable radial piston engine has been known.
- the rotational angle sensor is intended to detect the current rotational or swivel angle of a cylinder of the radial piston motor, wherein the rotational angle is proportional to the currently set absorption volume of the radial piston motor.
- the swivel angle ⁇ of the cylinder is measured while the radial piston engine is running, from which the eccentricity and above that the displacement are calculated.
- the currently determined absorption volume can thus be used as a reference variable in a control process for regulating the delivery rate of the radial piston machine.
- the invention is based on the idea that there is a mathematical link between the swivel angle ⁇ , the angle of rotation ⁇ of the drive shaft and the respectively set eccentricity e. Since the displacement itself and also the eccentricity during operation of the radial piston machine are not or only very badly measurable, according to the invention, only the pivot angle is measured and calculated using this using the mathematical relationship, the displacement.
- a function similar to a sine curve results in which the maxima and minima are shifted relative to the sine curve.
- Swivel angle ß are achieved in each case in the top and bottom dead center of the radial piston.
- each time t n is a rotation angle of a n of the drive shaft associated.
- a number z of pulses per revolution of the drive shaft is generated for determining the times t n .
- the occurrence of the pulses triggers the measurement of the swivel angle ß n .
- the drive shaft is assigned a zero position, which corresponds to the top dead center of the eccentric and which is newly determined after each pass, ie a rotation angle of 360 °.
- the direction of rotation of the drive shaft from the functional curve of the pivot angle ß, d. H. be determined from the relative position of the swivel angle maxima and minima against ⁇ / 2 and 3 ⁇ 12: If the increase of the swivel angle ß from the minimum to the maximum steeper than the fall from the maximum to the minimum, the direction of rotation is considered to be dextrorotatory. In other cases, the direction of rotation is left-turning. The knowledge of the direction of rotation is essential for the calculation of the swallow volume.
- Fig. 1 is a schematic representation of an adjustable radial piston engine
- Fig. 2 is a schematic representation of the geometric relationships for a cylinder of a radial piston engine
- Fig. 1 shows a trained as a radial piston engine 1 radial piston machine according to the prior art.
- Five cylinders 2 are arranged in a star shape and pivotally mounted (which is not shown).
- Each cylinder 2 is associated with a piston 3 which is slidably supported by a shoe on a lifting ring 4.
- the cam 4 is driven by an eccentric 5 and thus causes the different Hubphasen shown in the drawing.
- the pivotable mounting of the cylinders, not shown in FIG. 1, is evident from the initially mentioned DE 1 2004 2004 048 1 74 A1, which is hereby incorporated in full in the disclosure content of the present application.
- Fig. 2 shows a schematic representation of a cylinder 2 of Fig. 1, wherein like reference numerals are used for the same parts.
- the cylinder 2 is pivotally mounted about a passing through the point S axis in a housing, not shown.
- the slidingly arranged in the cylinder 2 piston 3 is supported with its shoe 3a slidably on the cam 4, which is driven by the eccentric 5.
- the eccentric 5 has a pivot point D, through which the axis of a not shown, the eccentric 5 driving drive shaft extends.
- the distance of the center M from the pivot point D is referred to as deflection or eccentricity e.
- the deflection e is adjustable for the purpose of changing the lift or displacement volume of the radial piston motor.
- the pivot angle of the cylinder 2 is ⁇ and the angle of rotation of the drive shaft about the pivot point D, starting from the top dead center of the piston 3, is denoted by ⁇ .
- For the indicated rotation angle ⁇ results in a position designated by the point E of the eccentric, in which the cylinder 2 has been pivoted by the angle ß.
- the function of the swivel angle ⁇ is plotted in FIG. 3 and shown in solid lines, on the one hand for a maximum eccentricity e and on the other hand for half the maximum eccentricity (e / 2). For comparison, corresponding sinusoids are shown in dashed lines. It can be seen that the zero crossings are identical, but not the maxima and minima.
- the maximum for the swivel angle ß occurs before ⁇ / 2, the minimum for ß occurs after the minimum of the sinusoid.
- the maximum with ß ma x and the minimum with ß m in are drawn. From the illustrated function curve, ie from the relative position of ⁇ max and ⁇ min with respect to ⁇ 12 and 3 ⁇ 12, the direction of rotation of the drive shaft can be determined. derive le as follows: The direction of rotation is considered to be dextrorotatory if the increase in the swivel angle ß from the minimum to the maximum is steeper than the fall from the maximum to the minimum; in all other cases the direction of rotation is left-turning.
- the deflection or eccentricity e can be calculated according to the abovementioned tan function.
- the displacement v of the radial piston engine 1 and the displacement e there is a unique relationship:
- One of the cylinders 2 is equipped with an angle sensor, not shown, which measures the swivel angle ß - as known from the aforementioned prior art.
- the zero point of the swivel angle ß is achieved in each case in the upper and lower end position of the piston (top dead center, bottom dead center).
- an unillustrated pulse generator For one complete revolution of the drive shaft, an unillustrated pulse generator generates a number of z pulses in a pulse detector. Z does not necessarily have to be an integer. This is z. B. then the case when the pulse is not arranged directly on the drive shaft, but is driven by a pinion gear with non-integer ratio.
- Each pulse n stores the time of its detection t n .
- each pulse triggers a measurement of the swivel angle ß.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009054876A DE102009054876A1 (de) | 2009-12-17 | 2009-12-17 | Verfahren zur Bestimmung des Schluckvolumens einer Radialkolbenmaschine |
PCT/EP2010/068392 WO2011082890A2 (de) | 2009-12-17 | 2010-11-29 | Verfahren zur bestimmung des schluckvolumes einer radialkolbenmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2513470A2 true EP2513470A2 (de) | 2012-10-24 |
EP2513470B1 EP2513470B1 (de) | 2014-04-16 |
Family
ID=44305861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100787367 Not-in-force EP2513470B1 (de) | 2009-12-17 | 2010-11-29 | Verfahren zur bestimmung des schluckvolumes einer radialkolbenmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US9115711B2 (de) |
EP (1) | EP2513470B1 (de) |
JP (1) | JP5689479B2 (de) |
KR (1) | KR20120102708A (de) |
CN (1) | CN102695871B (de) |
DE (1) | DE102009054876A1 (de) |
WO (1) | WO2011082890A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013202385A1 (de) | 2013-02-14 | 2014-08-14 | Zf Friedrichshafen Ag | Verfahren zur Steuerung eines hydrostatischen Getriebes |
CN104088769A (zh) * | 2014-08-01 | 2014-10-08 | 吉首大学 | 偏心可调式柱塞泵 |
DE102015217070A1 (de) | 2015-09-07 | 2017-03-09 | Zf Friedrichshafen Ag | Verfahren zur Bestimmung des Schluckvolumens einer Radialkolbenmaschine und Steuereinrichtung |
CN105114277A (zh) * | 2015-09-11 | 2015-12-02 | 余文凌 | 径向柱塞式无阀无脉动计量泵 |
IT201700012623A1 (it) * | 2017-02-06 | 2018-08-06 | Parker Hannifin Mfg S R L | Metodo e apparecchiatura per il controllo della variazione di posizione di un eccentrico di motori idraulici a cilindrata variabile |
CN109856418B (zh) * | 2019-02-11 | 2024-06-25 | 西安卓士博液压工程有限责任公司 | 一种径向柱塞马达转速测量装置及其安装方法 |
CN112814864B (zh) * | 2021-01-06 | 2022-11-29 | 上海三一重机股份有限公司 | 径向柱塞泵的控制方法、装置以及电子终端 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3441966A1 (de) | 1984-11-16 | 1986-05-28 | G. Düsterloh GmbH, 4322 Sprockhövel | Steuerung fuer einen hydrostatischen kolbenmotor |
US5133418A (en) * | 1991-01-28 | 1992-07-28 | Lag Steering Systems | Directional drilling system with eccentric mounted motor and biaxial sensor and method |
DE4308198C1 (de) * | 1993-03-15 | 1994-07-28 | Rexroth Mannesmann Gmbh | Drehmomentregelung über Schwenkwinkel bzw. Exzentrizität bei hydrostatischen Maschinen mit axialer und radialer Kolbenanordnung |
DE19513987C2 (de) * | 1995-04-13 | 1998-10-08 | Bosch Gmbh Robert | Verstellbare, hydrostatische Radialkolbenmaschine |
DE19703155C2 (de) * | 1997-01-29 | 1999-01-07 | Bosch Gmbh Robert | Verstellbare Radialkolbenmaschine |
CN1097166C (zh) * | 1997-09-29 | 2002-12-25 | S·A·I会水利设备股份公司 | 带有径向活塞和可变排量的液压机 |
US6178746B1 (en) * | 1998-03-31 | 2001-01-30 | Unipat Ag | Hydrostatic machines for use in transmission and transaxle product |
FR2831225B1 (fr) * | 2001-10-24 | 2004-01-02 | Snecma Moteurs | Dispositif electrohydraulique de changement de pas d'helice |
ITMI20041598A1 (it) * | 2004-08-03 | 2004-11-03 | Parker Calzoni S R L | Procedimento e apparecchiatura per la determinazione di almeno un parametro istantaneo di funzionamento in motori a cilindrata variabile |
DE102004048174A1 (de) | 2004-10-02 | 2006-04-06 | Zf Friedrichshafen Ag | Einrichtung zur Bestimmung des Schluckvolumens eines verstellbaren Radialkolbenmotors |
DE102006043291A1 (de) | 2006-09-14 | 2008-03-27 | Zf Friedrichshafen Ag | Berührungsloser Drehwinkelsensor |
DE102007003800B3 (de) | 2007-01-25 | 2008-05-08 | Sauer-Danfoss Gmbh & Co Ohg | Verfahren zur Regelung eines hydrostatischen Antriebssystems |
-
2009
- 2009-12-17 DE DE102009054876A patent/DE102009054876A1/de not_active Withdrawn
-
2010
- 2010-11-29 CN CN201080057240.5A patent/CN102695871B/zh not_active Expired - Fee Related
- 2010-11-29 KR KR1020127015499A patent/KR20120102708A/ko not_active Application Discontinuation
- 2010-11-29 JP JP2012543582A patent/JP5689479B2/ja not_active Expired - Fee Related
- 2010-11-29 EP EP20100787367 patent/EP2513470B1/de not_active Not-in-force
- 2010-11-29 WO PCT/EP2010/068392 patent/WO2011082890A2/de active Application Filing
- 2010-11-29 US US13/515,530 patent/US9115711B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2011082890A2 * |
Also Published As
Publication number | Publication date |
---|---|
CN102695871A (zh) | 2012-09-26 |
US9115711B2 (en) | 2015-08-25 |
WO2011082890A2 (de) | 2011-07-14 |
JP2013514480A (ja) | 2013-04-25 |
EP2513470B1 (de) | 2014-04-16 |
CN102695871B (zh) | 2015-02-25 |
JP5689479B2 (ja) | 2015-03-25 |
KR20120102708A (ko) | 2012-09-18 |
US20120259580A1 (en) | 2012-10-11 |
WO2011082890A3 (de) | 2011-11-10 |
DE102009054876A1 (de) | 2011-06-22 |
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