WO2003046382A1 - Hubermittlung in hubkolbenmaschine - Google Patents

Hubermittlung in hubkolbenmaschine Download PDF

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Publication number
WO2003046382A1
WO2003046382A1 PCT/DE2002/004232 DE0204232W WO03046382A1 WO 2003046382 A1 WO2003046382 A1 WO 2003046382A1 DE 0204232 W DE0204232 W DE 0204232W WO 03046382 A1 WO03046382 A1 WO 03046382A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
stroke
particular according
pressure
determined
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.)
Ceased
Application number
PCT/DE2002/004232
Other languages
German (de)
English (en)
French (fr)
Inventor
Thilo Schäfer
Georg Weber
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.)
LuK Fahrzeug Hydraulik GmbH and Co KG
Original Assignee
LuK Fahrzeug Hydraulik GmbH and Co KG
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 LuK Fahrzeug Hydraulik GmbH and Co KG filed Critical LuK Fahrzeug Hydraulik GmbH and Co KG
Priority to AU2002350396A priority Critical patent/AU2002350396A1/en
Priority to EP02785067A priority patent/EP1448893B1/de
Priority to US10/495,824 priority patent/US7263877B2/en
Priority to JP2003547793A priority patent/JP2005510662A/ja
Priority to DE10295527T priority patent/DE10295527D2/de
Priority to DE50212453T priority patent/DE50212453D1/de
Publication of WO2003046382A1 publication Critical patent/WO2003046382A1/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/3213—Control means therefor for increasing the efficiency in a vehicle heat pump
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • 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
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/32—Cooling devices
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3248—Cooling devices information from a variable is obtained related to pressure
    • B60H2001/325—Cooling devices information from a variable is obtained related to pressure of the refrigerant at a compressing unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/32—Cooling devices
    • B60H2001/3269—Cooling devices output of a control signal
    • B60H2001/327—Cooling devices output of a control signal related to a compressing unit
    • B60H2001/3275—Cooling devices output of a control signal related to a compressing unit to control the volume of a compressor
    • 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
    • F04B2201/0206—Length of piston stroke
    • 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
    • F04B2201/1201—Rotational speed of the axis
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/07—Pressure difference over the pump
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • the invention relates to a method for determining the stroke of a variable-stroke reciprocating machine, such as. B. a swash plate compressor or a swivel plate compressor or a swivel ring compressor, especially for air conditioning systems in motor vehicles.
  • a variable-stroke reciprocating machine such as. B. a swash plate compressor or a swivel plate compressor or a swivel ring compressor
  • Such compressors are known, and it is also known that the stroke of such a compressor z. B. can be determined by measuring the position of the swash plate within the compressor. This means that these sensors have to withstand very high temperatures, pressures and the surrounding medium in the drive room.
  • Another possibility is to use electromagnetic sensors for stroke measurement, which are attached to the outside of the housing. However, their function can be impaired by a housing made of ferrous materials. It is the object of the invention to present a method for determining the stroke of a variable-stroke reciprocating piston machine which does not have these disadvantages.
  • a method is preferred in which the differential pressure PD is determined from the volume flow of the compressor as a pressure difference by a resistance device. Furthermore, a method is preferred in which the speed of the compressor volume flow is determined by a hot wire anemometer.
  • a method according to the invention is characterized in that the resistance device can be represented by a Venturi tube. Furthermore, a resistance device can be represented by a measuring orifice, which, if necessary, how the venturi tube can be integrated in the compressor. Furthermore, a resistance device is preferred, which is represented by a measuring nozzle and can optionally be integrated in the compressor housing.
  • the high pressure PH and / or the suction pressure PS can be measured with a pressure sensor in each case or with a differential pressure sensor before and after the resistance device.
  • a method is preferred in which the high pressure PH and / or the suction pressure PS can be determined from the evaporator temperature or the ambient temperature of the passenger compartment.
  • a method according to the invention is characterized in that the power consumption of the air conditioning compressor can be determined by means of the stroke. Furthermore, a method is preferred in which the stroke of the compressor can be used as a control variable for a compressor control valve. A method is also preferred in which the air conditioning compressor can be operated with a predetermined output by the engine management of the internal combustion engine by means of the stroke measurement.
  • Figure 1 shows the entire circuit of an air conditioning system.
  • Figure 2 Figure 2 and Figure 4 each show variants of the differential pressure determinations.
  • FIG. 1 shows the circuit of an air conditioning system or a heat pump system on which the determination of the compressor stroke according to the invention is to be described.
  • a stroke-variable compressor 1 in the circuit, which is shown symbolically here.
  • the compressor 1 supplies a coolant under high pressure via a line system 2 to an air conditioning system 3 or to a heat pump system 3. From this system, a suction pressure line 4 leads back to the intake side of the compressor 1.
  • the speed of the compressor is determined by a speed sensor 5 and processing electronics 6 fed.
  • the suction pressure of the compressor is determined via a suction pressure sensor 7 in the suction line area 4.
  • the high pressure is determined by a high pressure sensor 8 in the high pressure line area 2 of the system.
  • the differential pressure itself is determined by a system 9, which is shown in different variants in the figures.
  • the differential pressure 11 is determined via a Venturi tube 10, which represents a variable representing the volume flow of the compressor.
  • the mode of operation of the compressor's stroke function thus works in such a way that the volume flow conveyed by the refrigerant compressor is determined with the aid of this differential pressure measurement.
  • the volume flow delivered is proportional to the stroke of the compressor.
  • the volumetric efficiency of the compressor is also known as a function of the pressure ratio P high pressure - P suction pressure
  • the stroke of the compressor can be calculated from the volume flow, the speed 5 and the pressure ratio of the pressures 8-7.
  • the pressure ratio is measured with the high pressure sensor 8 or the suction pressure sensor 7. If there is no information about the suction pressure 7 or the high pressure 8, these pressures can also be determined indirectly from the temperature of the evaporator in the circulation system or from the ambient temperature of the passenger compartment.
  • the compressor stroke information can be used to make statements about the power consumption of the compressor, which are used for engine management.
  • the invention creates a possibility to make precise statements about the compressor power consumption and to meet the requirement that a compressor can be operated with a predetermined power consumption, for. B. if the internal combustion engine can or should only provide the compressor with a certain torque.
  • a compressor operation with a predetermined power consumption is possible or a direct control of the compressor stroke.
  • FIG. 2 shows a further variant for determining the differential pressure 11.
  • the differential pressure PD is determined by means of a measuring orifice by the Compressor volume flow in the high pressure area is passed through the orifice plate 12 and the pressure difference in front of and behind the orifice plate, which represents the differential pressure PD, is determined.
  • This orifice plate can be arranged both outside the compressor in the air conditioning circuit and inside the compressor in the housing or in the cylinder head.
  • FIG. 3 shows a further variant for determining the differential pressure 11, a measuring nozzle 13 being used as the flow resistance for the compressor volume flow.
  • FIG. 4 shows a physical possibility of determining the speed of the volume flow on the high pressure side of the compressor by means of a so-called hot wire anemometer 15.
  • the measured variable that supplies this hot-wire anemometer is the flow velocity 14 of the volume flow delivered by the compressor.
  • the compressor stroke can be determined via the speed as well as via the differential pressure using the relationships mentioned above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
PCT/DE2002/004232 2001-11-19 2002-11-15 Hubermittlung in hubkolbenmaschine Ceased WO2003046382A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2002350396A AU2002350396A1 (en) 2001-11-19 2002-11-15 Determination of the piston stroke in a reciprocating piston machine
EP02785067A EP1448893B1 (de) 2001-11-19 2002-11-15 Hubermittelung in hubkolbenmaschine
US10/495,824 US7263877B2 (en) 2001-11-19 2002-11-15 Determination of the piston stroke in a reciprocating piston machine
JP2003547793A JP2005510662A (ja) 2001-11-19 2002-11-15 往復ピストン機械の行程検出法
DE10295527T DE10295527D2 (de) 2001-11-19 2002-11-15 Hubermittlung in Hubkolbenmaschine
DE50212453T DE50212453D1 (de) 2001-11-19 2002-11-15 Hubermittelung in hubkolbenmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10156784 2001-11-19
DE10156784.7 2001-11-19

Publications (1)

Publication Number Publication Date
WO2003046382A1 true WO2003046382A1 (de) 2003-06-05

Family

ID=7706258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004232 Ceased WO2003046382A1 (de) 2001-11-19 2002-11-15 Hubermittlung in hubkolbenmaschine

Country Status (10)

Country Link
US (1) US7263877B2 (https=)
EP (1) EP1448893B1 (https=)
JP (1) JP2005510662A (https=)
CN (1) CN100580251C (https=)
AT (1) ATE399940T1 (https=)
AU (1) AU2002350396A1 (https=)
DE (3) DE10295527D2 (https=)
FR (1) FR2832468B1 (https=)
IT (1) ITMI20022440A1 (https=)
WO (1) WO2003046382A1 (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057159A1 (de) * 2004-11-26 2006-06-01 Volkswagen Ag Klimaanlage für ein Kraftfahrzeug
JP5091787B2 (ja) * 2008-07-15 2012-12-05 株式会社日立産機システム 圧縮空気製造設備
JP5770731B2 (ja) 2009-08-31 2015-08-26 アルコン リサーチ， リミテッド 駆動バルブデューティによる空気圧出力の制御
US8666556B2 (en) * 2009-12-10 2014-03-04 Alcon Research, Ltd. Systems and methods for dynamic feedforward
CN102652006B (zh) * 2009-12-10 2014-06-11 爱尔康研究有限公司 用于动态气动阀驱动器的系统和方法
US8821524B2 (en) 2010-05-27 2014-09-02 Alcon Research, Ltd. Feedback control of on/off pneumatic actuators
US9060841B2 (en) 2011-08-31 2015-06-23 Alcon Research, Ltd. Enhanced flow vitrectomy probe
US10070990B2 (en) 2011-12-08 2018-09-11 Alcon Research, Ltd. Optimized pneumatic drive lines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996422A (en) * 1997-05-30 1999-12-07 A.P. Buck, Inc. Buck air sampling pump flow control algorithm
US6289680B1 (en) * 1998-11-04 2001-09-18 Lg Electronics, Inc. Apparatus for controlling linear compressor and method thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86203508U (zh) * 1986-05-23 1987-09-09 西安交通大学 节流元件-多孔动压探针组合式双相流量干度计
CN86205994U (zh) * 1986-08-19 1987-05-27 中美合资宁加农业环境仪器设备有限公司 微风速仪
JP2620961B2 (ja) * 1988-09-26 1997-06-18 本田技研工業株式会社 可変容量式圧縮機のストローク検出値補正装置
JPH0834226A (ja) * 1994-07-21 1996-02-06 Toyota Motor Corp 車両用空調装置
GB9905561D0 (en) * 1999-03-11 1999-05-05 Exxon Chemical Patents Inc Molecular sieve layers and process for their manufacture
DE19918930B4 (de) * 1999-04-26 2006-04-27 Lg Electronics Inc. Leistungssteuervorrichtung für einen Linearkompressor und ebensolches Verfahren
JP3911937B2 (ja) * 1999-08-04 2007-05-09 株式会社豊田自動織機 空調装置及び容量可変型圧縮機の制御方法
US6381545B1 (en) * 2000-01-12 2002-04-30 Delphi Technologies, Inc. Diagnostic method for an automotive HVAC compressor
JP3917347B2 (ja) * 2000-05-18 2007-05-23 株式会社豊田自動織機 車両用空調装置
US6520746B2 (en) * 2000-09-27 2003-02-18 Lg Electronics Inc. Apparatus and method for controlling operation of reciprocating compressor
JP4934921B2 (ja) * 2001-07-26 2012-05-23 株式会社豊田自動織機 ピストン式容量可変型流体機械

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996422A (en) * 1997-05-30 1999-12-07 A.P. Buck, Inc. Buck air sampling pump flow control algorithm
US6289680B1 (en) * 1998-11-04 2001-09-18 Lg Electronics, Inc. Apparatus for controlling linear compressor and method thereof

Also Published As

Publication number Publication date
CN1589372A (zh) 2005-03-02
AU2002350396A1 (en) 2003-06-10
EP1448893A1 (de) 2004-08-25
JP2005510662A (ja) 2005-04-21
EP1448893B1 (de) 2008-07-02
DE50212453D1 (de) 2008-08-14
CN100580251C (zh) 2010-01-13
US20050028615A1 (en) 2005-02-10
FR2832468A1 (fr) 2003-05-23
DE10253293A1 (de) 2003-05-28
ATE399940T1 (de) 2008-07-15
DE10295527D2 (de) 2004-10-14
US7263877B2 (en) 2007-09-04
ITMI20022440A1 (it) 2003-05-20
FR2832468B1 (fr) 2005-08-26

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