EP1624185A2 - Verfahren und Vorrichtung zur Ermittlung von Betriebsparametern eines hydraulichen Kolbenmotors - Google Patents

Verfahren und Vorrichtung zur Ermittlung von Betriebsparametern eines hydraulichen Kolbenmotors Download PDF

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Publication number
EP1624185A2
EP1624185A2 EP05076783A EP05076783A EP1624185A2 EP 1624185 A2 EP1624185 A2 EP 1624185A2 EP 05076783 A EP05076783 A EP 05076783A EP 05076783 A EP05076783 A EP 05076783A EP 1624185 A2 EP1624185 A2 EP 1624185A2
Authority
EP
European Patent Office
Prior art keywords
driving shaft
centre
rotation
engine
oscillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05076783A
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English (en)
French (fr)
Other versions
EP1624185A3 (de
Inventor
Loris De Leonardis
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.)
Parker Calzoni SRL
Original Assignee
Parker Calzoni SRL
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 Parker Calzoni SRL filed Critical Parker Calzoni SRL
Publication of EP1624185A2 publication Critical patent/EP1624185A2/de
Publication of EP1624185A3 publication Critical patent/EP1624185A3/de
Withdrawn legal-status Critical Current

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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
    • F04B1/06—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
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1208—Angular position of the shaft

Definitions

  • the present invention relates to a method and an apparatus for determining the instantaneous operating parameters of a variable-volume engine.
  • variable-volume engines the spherical part of the driving shaft, in addition to rotating, may also be displaced with respect to the shaft itself, thus changing its own eccentricity and therefore the operating volume of the engine. In this way the value of the volume may be varied during operation of the engine so as to adapt it to the external load conditions, optimising the performance thereof.
  • the engine is provided with sensors which measure the speed and volume thereof, then sending the respective signals to the control circuits of the machine on which the engine is mounted.
  • the speed of rotation and the angular position of the driving shaft may be detected by an incremental encoder, while the volume is detected by a sensor which measures the amplitude of the oscillation of one of the cylinders of the engine, which amplitude is proportional precisely to the swept volume of the said engine.
  • the volume sensor (of the induction type positioned on the engine casing on the side of one cylinder) measures essentially the maximum value of oscillation of the cylinder, thus providing a signal useful solely upon completion of each revolution of the driving shaft and resulting, therefore, in a signal and therefore data which are not continuous.
  • These engines and the devices for detecting the position of the cylinder are for example known from EP 0,267,656 in the name of the same present Applicants.
  • these engines and associated devices for detecting the position of the propulsion member have certain problems essentially consisting in the fact that they require the use of two different sensors in order to measure, respectively, the speed of rotation of the shaft and the actual volume of the engine; moreover, the volume sensor has limitations in that:
  • the technical problem which is posed, therefore, is that of providing an apparatus by means of which it is possible to determine the operating parameters of an engine with radial propulsion members, in particular the swept volume, the speed of rotation and the instantaneous angular position of the driving shaft.
  • this apparatus should consist of a limited number of components which can be standardized and used to obtain several measurements which may also be different from each other and which may be installed in an easy and low-cost manner also on engines of the conventional type without the need for complicated adaptation.
  • the present invention relates furthermore to an apparatus for determining the instantaneous operating parameters of a variable-volume hydraulic engine according to the characteristic features of Claim 14 and to an engine equipped with said apparatus according to the characteristic features of Claim 26.
  • a variable-volume hydraulic engine is composed of a casing 1 housing the propulsion members 10 consisting of a cylinder 11 and a piston 12.
  • each of the cylinders 11 is connected to a rotating distributor 4 which is housed inside a cover 1a fixed to the casing 1, actuated by a driving shaft 4d and able to cyclically supply or discharge the cylinders 11 in synchronism with rotation of the driving shaft 7.
  • the pistons 12 are telescopically movable in the radial direction and bear against the external surface of a spherical body 6 which is movable eccentrically in the radial direction with respect to the axis of the driving shaft 7 upon actuation of associated means 8, said variation in eccentricity determining also the variation in volume of the engine.
  • the apparatus for detecting the swept volume of the engine comprises at least one pair of sensors 50, each of which is arranged on the cap 2 of a respective propulsion member 10 with its longitudinal axis parallel and axially offset (Fig. 3) with respect to the longitudinal axis of the propulsion member 10 in the rest condition and a data processing unit 1000 for detecting and storing the signals emitted by the sensors and performing the necessary calculations, as will become clearer below.
  • said sensor 50 is able to measure the distance "h" of the surface of the cylinder 11 from the sensor itself.
  • the position of the sensor which is axially offset with respect to the axis of symmetry of the cylinder allows, moreover, determination of the direction of rotation (clockwise/anti-clockwise) of the cylinder and therefore the driving shaft.
  • Figs. 7 to 12 shows a second example of embodiment by way of a variation of the apparatus for determining the instantaneous eccentricity of the spherical body 6.
  • the sensor 150 is of the angular type and is suitable for measuring the amplitude of rotation of a pin 20 which is substantially perpendicular to the axis of symmetry of the propulsion member 10, said pin 20 being contained inside a respective seat 21 of the cap 2 of the engine with the arrangement of sealing elements 22 in between.
  • Said horizontal pin 20 has, connected to it, a pin 30 for supporting the cylinder 11, having a head 33 which has a spherical surface 33a resting on corresponding support elements 34 which are fixed to the casing 1a so that the head 33 itself forms a ball joint for oscillation of the propulsion member 10.
  • the present invention relates furthermore to a method for determining the operating parameters of a variable-volume hydraulic engine which envisages the following steps:
  • the instantaneous operating parameters obtained by means of the calculation consist of: the swept volume of the engine; the direction of rotation of the driving shaft; the angular position of the driving shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Hydraulic Motors (AREA)
  • Reciprocating Pumps (AREA)
EP05076783A 2004-08-03 2005-08-01 Verfahren und Vorrichtung zur Ermittlung von Betriebsparametern eines hydraulichen Kolbenmotors Withdrawn EP1624185A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001598A ITMI20041598A1 (it) 2004-08-03 2004-08-03 Procedimento e apparecchiatura per la determinazione di almeno un parametro istantaneo di funzionamento in motori a cilindrata variabile

Publications (2)

Publication Number Publication Date
EP1624185A2 true EP1624185A2 (de) 2006-02-08
EP1624185A3 EP1624185A3 (de) 2007-01-24

Family

ID=35262098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05076783A Withdrawn EP1624185A3 (de) 2004-08-03 2005-08-01 Verfahren und Vorrichtung zur Ermittlung von Betriebsparametern eines hydraulichen Kolbenmotors

Country Status (2)

Country Link
EP (1) EP1624185A3 (de)
IT (1) ITMI20041598A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007122643A1 (en) * 2006-04-20 2007-11-01 S.A.I. Societa' Apparecchiature Idrauliche S.P.A. Hydraulic motor having radial cylinders and continuous variable displacement
WO2011082890A3 (de) * 2009-12-17 2011-11-10 Zf Friedrichshafen Ag Verfahren zur bestimmung des schluckvolumes einer radialkolbenmaschine
CN102619675A (zh) * 2011-06-16 2012-08-01 兰州理工大学 七星单作用活塞缸偏置式径向柱塞马达
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
CN111980903A (zh) * 2020-07-30 2020-11-24 珠海格力电器股份有限公司 测量泵体内压力的检测组件、压缩机的检测组件和压缩机
CN112576491A (zh) * 2020-11-13 2021-03-30 珠海格力电器股份有限公司 信号采集系统、压缩机及空调器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267656A2 (de) * 1986-11-14 1988-05-18 RIVA CALZONI S.p.A. Vorrichtung zur Registrierung der Zylinderkapazität einer hydraulischen Maschine, versehen mit variabler Zylinderkapazität
US4945816A (en) * 1985-12-02 1990-08-07 Black Gold Development Corporation Radial piston hydraulic motor with rotary cam position encoder and valve control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945816A (en) * 1985-12-02 1990-08-07 Black Gold Development Corporation Radial piston hydraulic motor with rotary cam position encoder and valve control system
EP0267656A2 (de) * 1986-11-14 1988-05-18 RIVA CALZONI S.p.A. Vorrichtung zur Registrierung der Zylinderkapazität einer hydraulischen Maschine, versehen mit variabler Zylinderkapazität

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8235680B2 (en) 2006-04-20 2012-08-07 S.A.I. Societa' Apparecchiature Idrauliche S.P.A. Hydraulic motor having radial cylinders and continuous variable displacement
CN101432520B (zh) * 2006-04-20 2011-06-08 S.A.I会水利设备股份公司 具有星形缸体和连续可变排量的液压马达
WO2007122643A1 (en) * 2006-04-20 2007-11-01 S.A.I. Societa' Apparecchiature Idrauliche S.P.A. Hydraulic motor having radial cylinders and continuous variable displacement
JP4842372B2 (ja) * 2006-04-20 2011-12-21 エッセ ア イ ソチエタ アッパレッキアトゥーレ イドゥラウリケ ソチエタ ペル アツィオーニ 押し除け量が連続可変であるラジアルシリンダ液圧モータ
CN102695871A (zh) * 2009-12-17 2012-09-26 Zf腓德烈斯哈芬股份公司 用于确定径向柱塞式机械的排量的方法
WO2011082890A3 (de) * 2009-12-17 2011-11-10 Zf Friedrichshafen Ag Verfahren zur bestimmung des schluckvolumes einer radialkolbenmaschine
JP2013514480A (ja) * 2009-12-17 2013-04-25 ツェットエフ、フリードリッヒスハーフェン、アクチエンゲゼルシャフト ラジアルピストン機械における排出容積の決定方法
CN102695871B (zh) * 2009-12-17 2015-02-25 Zf腓德烈斯哈芬股份公司 用于确定径向柱塞式机械的排量的方法
US9115711B2 (en) 2009-12-17 2015-08-25 Zf Friedrichshafen, Ag Method for determining the displacement of a radial piston machine
CN102619675A (zh) * 2011-06-16 2012-08-01 兰州理工大学 七星单作用活塞缸偏置式径向柱塞马达
CN102619675B (zh) * 2011-06-16 2014-07-23 兰州理工大学 七星单作用活塞缸偏置式径向柱塞马达
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
EP3358181A1 (de) * 2017-02-06 2018-08-08 Parker Hannifin Manufacturing S.r.l. Verfahren und vorrichtung zur steuerung der positionsänderung eines exzentrischen nockens von hydraulischen verstellmotoren
CN111980903A (zh) * 2020-07-30 2020-11-24 珠海格力电器股份有限公司 测量泵体内压力的检测组件、压缩机的检测组件和压缩机
CN112576491A (zh) * 2020-11-13 2021-03-30 珠海格力电器股份有限公司 信号采集系统、压缩机及空调器

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Publication number Publication date
ITMI20041598A1 (it) 2004-11-03
EP1624185A3 (de) 2007-01-24

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