AU1787799A - Device for digital hydraulic pressure transformation (dhpt) - Google Patents

Device for digital hydraulic pressure transformation (dhpt)

Info

Publication number
AU1787799A
AU1787799A AU17877/99A AU1787799A AU1787799A AU 1787799 A AU1787799 A AU 1787799A AU 17877/99 A AU17877/99 A AU 17877/99A AU 1787799 A AU1787799 A AU 1787799A AU 1787799 A AU1787799 A AU 1787799A
Authority
AU
Australia
Prior art keywords
dhpt
hydraulic pressure
digital hydraulic
pressure transformation
transformation
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.)
Abandoned
Application number
AU17877/99A
Inventor
Theodorus Gerhardus Potma
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.)
T Potma Beheer BV
Original Assignee
T Potma Beheer BV
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
Priority claimed from NL1007912A external-priority patent/NL1007912C2/en
Application filed by T Potma Beheer BV filed Critical T Potma Beheer BV
Publication of AU1787799A publication Critical patent/AU1787799A/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B71/00—Free-piston engines; Engines without rotary main shaft
    • F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
    • F02B71/045—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby with hydrostatic transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/047—Preventing foaming, churning or cavitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
AU17877/99A 1997-12-24 1998-12-24 Device for digital hydraulic pressure transformation (dhpt) Abandoned AU1787799A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL1007912A NL1007912C2 (en) 1997-12-24 1997-12-24 Low loss flow control for hydromotors and cylinders operating from an accumulator such as using a free-piston unit.
NL1007912 1997-12-24
NL1008588 1998-03-13
PCT/NL1998/000734 WO1999034100A1 (en) 1997-12-24 1998-12-24 Device for digital hydraulic pressure transformation (dhpt)

Publications (1)

Publication Number Publication Date
AU1787799A true AU1787799A (en) 1999-07-19

Family

ID=26642719

Family Applications (1)

Application Number Title Priority Date Filing Date
AU17877/99A Abandoned AU1787799A (en) 1997-12-24 1998-12-24 Device for digital hydraulic pressure transformation (dhpt)

Country Status (3)

Country Link
EP (1) EP1042596B1 (en)
AU (1) AU1787799A (en)
WO (1) WO1999034100A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158401A (en) * 1999-02-24 2000-12-12 Caterpillar Inc. Method of operating a free piston internal combustion engine with pulse compression
DE10026728A1 (en) 1999-11-24 2001-05-31 Mannesmann Rexroth Ag Free piston motor for converting energy from petrol/oil into hydraulic energy has control piston to determine changeover from high pressure and low pressure reservoirs
DE10033443A1 (en) * 2000-07-10 2002-02-07 Mannesmann Rexroth Ag Free-piston motor for driving e.g. axial reciprocating machine, has valves in paths connecting high pressure and low pressure tanks, so that compression strokes of piston act on valves
JP4096700B2 (en) * 2002-11-05 2008-06-04 日産自動車株式会社 Variable compression ratio device for internal combustion engine
CN109268355A (en) * 2018-11-09 2019-01-25 汕头大学 A kind of multi output Hydraulic Position Control System of micron level precision

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811795A (en) * 1973-01-12 1974-05-21 Flow Research Inc High pressure fluid intensifier and method
SE380640B (en) * 1974-03-22 1975-11-10 Tedeco Ag DEVICE FOR PROPORTIONAL ELECTROHYDRAULIC REMOTE CONTROL OF A SEVERAL HYDRAULIC CONTROL VALVES.
US4435133A (en) * 1977-10-17 1984-03-06 Pneumo Corporation Free piston engine pump with energy rate smoothing
DE4000185A1 (en) * 1989-01-11 1990-07-12 Komatsu Dresser Co System for preventing cavitation in hydrostatic gearing - has hydrostatic circuit with drive pump with variable displacement
EP0839265A1 (en) * 1995-04-10 1998-05-06 T. Potma Beheer B.V. Operation and control of a free piston aggregate
JPH0914202A (en) * 1995-06-28 1997-01-14 Sumitomo Constr Mach Co Ltd Negative control circuit of construction equipment

Also Published As

Publication number Publication date
EP1042596B1 (en) 2006-01-18
EP1042596A1 (en) 2000-10-11
WO1999034100A1 (en) 1999-07-08

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase