GB1437736A - Apparatus for directing fluid flow into different delivery ducts - Google Patents

Apparatus for directing fluid flow into different delivery ducts

Info

Publication number
GB1437736A
GB1437736A GB681474A GB681474A GB1437736A GB 1437736 A GB1437736 A GB 1437736A GB 681474 A GB681474 A GB 681474A GB 681474 A GB681474 A GB 681474A GB 1437736 A GB1437736 A GB 1437736A
Authority
GB
United Kingdom
Prior art keywords
valve
fluid flow
pump
feb
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.)
Expired
Application number
GB681474A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1437736A publication Critical patent/GB1437736A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0431—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the electrical control resulting in an on-off function
    • 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
    • F15B21/12—Fluid oscillators or pulse generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

1437736 Valves ROBERT BOSCH GmbH 14 Feb 1974 [15 Feb 1973] 6814/74 Heading F2V [Also in Division G3] A change-over valve 3 for dividing the fluid flow from a constant delivery pump 1 between a working cylinder 12 and a reservoir 2 is actuated by an independent fluid pressure medium acting on a piston 7. The supply of the medium from a pump 18 to either side of the piston is controlled by pilot valves 15, 16 which are electro-magnetically actuated through an electric pulse generator 19. The time one valve is open while the other is closed depends on the length of the pulses relative to their frequency. The pulse length and frequency can be varied to such an extent that one valve is always open while the other is closed. A first pressure limiting valve 4 is included in the input conduit and a second such valve 17 is included in the conduit from the pump 18.
GB681474A 1973-02-15 1974-02-14 Apparatus for directing fluid flow into different delivery ducts Expired GB1437736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732307351 DE2307351A1 (en) 1973-02-15 1973-02-15 METHOD AND EQUIPMENT FOR CONTROLLING THE FLOW OF A CONSTANT PUMP

Publications (1)

Publication Number Publication Date
GB1437736A true GB1437736A (en) 1976-06-03

Family

ID=5871936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB681474A Expired GB1437736A (en) 1973-02-15 1974-02-14 Apparatus for directing fluid flow into different delivery ducts

Country Status (3)

Country Link
JP (1) JPS49113201A (en)
DE (1) DE2307351A1 (en)
GB (1) GB1437736A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158971A (en) * 1984-02-22 1985-11-20 Koehring Co Digital servovalve structure and method
US4951459A (en) * 1988-08-30 1990-08-28 Allied-Signal Inc. Methods for metering fluid and apparatus for use therewith
GB2248910B (en) * 1990-08-28 1994-08-03 Trans Nordic Hydraulics Limite Electrical operation of fluid-pressure devices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712716A1 (en) * 1986-08-01 1988-02-04 Man Nutzfahrzeuge Gmbh PROCESS FOR REDUCING LOSSES, CHANGING THE SUPPLY CURRENT OF A CONSTANT FEED PUMP AND DEVICE FOR PERFORMING THE PROCESS
DE102019007277A1 (en) * 2019-10-18 2021-04-22 Bomag Gmbh Fixed displacement pump for use in pumping hydraulic fluid in a closed hydraulic circuit, closed hydraulic circuit, construction machine and method for operating a fixed displacement pump in a closed hydraulic circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158971A (en) * 1984-02-22 1985-11-20 Koehring Co Digital servovalve structure and method
US4951459A (en) * 1988-08-30 1990-08-28 Allied-Signal Inc. Methods for metering fluid and apparatus for use therewith
GB2248910B (en) * 1990-08-28 1994-08-03 Trans Nordic Hydraulics Limite Electrical operation of fluid-pressure devices

Also Published As

Publication number Publication date
JPS49113201A (en) 1974-10-29
DE2307351A1 (en) 1974-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee